contrib/rate_group - fix tooltip formation error

lib/dtutils/file - os.tmpname now works correctly on windows, removed

ChangeLog.md

@@ -1,5 +1,78 @@
 ## Changes from most recent to oldest
 
+**06 Jun 2024 - wpferguson**
+* fix fujifilm_ratings running on all images 
+* added string library functions to sanitize windows io.popen and os.execute functions
+* added database maintenance script
+
+**05 Jun 2024 - wpferguson**
+* added fix for executable_manager not being visible on windows
+
+**30 May 2024 - kkotowicz**
+* open in explorer now uses applescript on macos to open multiple files
+
+**20 May 2024 - wpferguson**
+* added string variable substitution to the string library
+
+**16 May 2024 - wpferguson**
+* fix crash in script_manager
+
+**15 May 2024 - wpferguson**
+* added metadata to scripts (name, author, purpose, help url)
+
+**06 May 2024 -  christian.sueltrop**
+* added passport_guide_germany script
+
+**08 Apr 2024 - wpferguson**
+* made script_manager aware of library modules in other directories besides lib
+
+**29 Mar 2024 - wpferguson**
+* updated examples/gui_action to use NaN instead of nan
+
+**29 Mar 2024 - dterrahe**
+* add lua action script example
+
+**28 Jan 2024 - wpferguson**
+* fix script_manager crash when script existed in top level lua directory
+
+**24 Jan 2024 - wpferguson**
+* don't set lib visibility unless we are in lighttable mode
+
+**15 Jan 2024 - MStraeten**
+* update x-touch.lua with support for primaries slider
+
+**14 Jan 2024 - wpferguson**
+* added cycle_group_leader script
+* added hif_group_leader script
+* added jpg_group_leader script
+
+**28 Oct 2023 - ddittmar**
+* Added select non existing image script
+
+**17 Oct 2023 - wpferguson**
+* script_manager wrap username in quotes to handle spaces in username
+
+**20 Sep 2023 - wpferguson**
+* script_manager explicitly set stopped scripts to false
+
+**18 Aug 2023 - wpferguson**
+* swap the position of executable_manager and script_manager due to windows gtk bug
+
+**17 Jul 2023 - wpferguson**
+* update check for update instructions
+* update flatpak readme
+
+**16 Jul 2023 - wpferguson**
+* added script_data.show function to contrib/gpx_export
+
+**15 Jul 2023 - wpferguson**
+* script_manager updates
+* added check_max_api_version for the case where the API no longer supports the required 
+  functions
+
+**14 Jul 2023 - spaceChRis**
+* add tooltip to filter manager
+
 **25 Mar 2023 - wpferguson**
 * Added script_manager darktable shortcut integration
 * Moved filename/path/extension string functions to string library

README.md

@@ -39,8 +39,11 @@ Name|Standalone|OS   |Purpose
 change_group_leader|Yes|LMW|Change which image leads group
 [clear_GPS](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/clear_gps)|Yes|LMW|Reset GPS information for selected images
 [CollectHelper](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/collecthelper)|Yes|LMW|Add buttons to selected images module to manipulate the collection
+color_profile_manager|Yes|LMW|Manage darktable input and output color profiles
 [copy_attach_detach_tags](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/copy_attach_detach_tags)|Yes|LMW|Copy and paste tags from/to images
 [cr2hdr](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/cr2hdr)|Yes|L|Process image created with Magic Lantern Dual ISO
+cycle_group_leader|Yes|LMW|cycle through images of a group making each the group leader in turn 
+dbmaint|Yes|LMW|find and remove database entries for missing film rolls and images
 [enfuseAdvanced](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/enfuseadvanced)|No|LMW|Merge multiple images into Dynamic Range Increase (DRI) or Depth From Focus (DFF) images
 [exportLUT](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/exportlut)|Yes|LMW|Create a LUT from a style and export it
 [ext_editor](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/ext_editor)|No|LW|Export pictures to collection and edit them with up to nine user-defined external editors
@@ -51,14 +54,18 @@ change_group_leader|Yes|LMW|Change which image leads group
 [geoToolbox](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/geotoolbox)|No|LMW|A toolbox of geo functions
 [gimp](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/gimp)|No|LMW|Open an image in GIMP for editing and return the result
 [gpx_export](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/gpx_export)|No|LMW|Export a GPX track file from selected images GPS data
+harmonic_armature|Yes|LMW|provide a harmonic armature guide
+hif_group_leader|Yes|LMW|change the group leader in a raw+heif image pair to the heif image
 [HDRMerge](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/hdrmerge)|No|LMW|Combine the selected images into an HDR DNG and return the result
 [hugin](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/hugin)|No|LMW|Combine selected images into a panorama and return the result
 [image_stack](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/image_stack)|No|LMW|Combine a stack of images to remove noise or transient objects
 [image_time](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/image_time)|Yes|LMW|Adjust the EXIF image time
+jpg_group_leader|Yes|LMW|change the group leader for a raw+jpg pair to the jpg image
 [kml_export](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/kml_export)|No|L|Export photos with a KML file for usage in Google Earth
 [LabelsToTags](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/labelstotags)|Yes|LMW|Apply tags based on color labels and ratings
 [OpenInExplorer](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/openinexplorer)|No|LMW|Open the selected images in the system file manager
 [passport_guide](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/passport_guide)|Yes|LMW|Add passport cropping guide to darkroom crop tool
+passport_guide_germany|Yes|LMW|Add passport cropping guide for German passports to darkroom crop tool
 [pdf_slideshow](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/pdf_slideshow)|No|LM|Export images to a PDF slideshow
 [photils](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/photils)|No|LM|Automatic tag suggestions for your images
 [quicktag](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/contrib/quicktag)|Yes|LMW|Create shortcuts for quickly applying tags
@@ -81,6 +88,7 @@ Name|Standalone|OS   |Purpose
 [api_version](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/api_version)|Yes|LMW|Print the current API version
 [darkroom_demo](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/darkroom_demo)|Yes|LMW|Demonstrate changing images in darkoom 
 [gettextExample](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/gettextexample)|Yes|LM|How to use translation
+gui_actions|Yes|LMW|demonstrate controlling the GUI using darktable.gui.action calls
 [hello_world](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/hello_world)|Yes|LMW|Prints hello world when darktable starts
 [lighttable_demo](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/lighttable_demo)|Yes|LMW|Demonstrate controlling lighttable mode, zoom, sorting and filtering
 [moduleExample](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/moduleexample)|Yes|LMW|How to create a lighttable module
@@ -89,6 +97,7 @@ Name|Standalone|OS   |Purpose
 [preferenceExamples](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/preferenceexamples)|Yes|LMW|How to use preferences in a script
 [printExamples](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/printexamples)|Yes|LMW|How to use various print functions from a script
 [running_os](https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/examples/running_os)|Yes|LMW|Print out the running operating system
+x-touch|Yes|LMW|demonstrate how to use an x-touch mini MIDI controller to control the darktable GUI
 
 ### Tools
 
@@ -118,6 +127,8 @@ The following third-party projects are listed for information only. Think of thi
 * [nbremond77/darktable](https://github.com/nbremond77/darktable/tree/master/scripts)
 * [s5k6/dtscripts](https://github.com/s5k6/dtscripts)
 * [ChristianBirzer/darktable_extra_scripts](https://github.com/ChristianBirzer/darktable_extra_scripts)
+* [fjb2020/darktable-scripts](https://github.com//fjb2020/darktable-scripts)
+* [bastibe/Darktable-Film-Simulation-Panel](https://github.com/bastibe/Darktable-Film-Simulation-Panel)
 
 ## Download and Install
 

contrib/AutoGrouper.lua

@@ -43,23 +43,29 @@ du.check_min_api_version("7.0.0", "AutoGrouper")
 
 local MOD = 'autogrouper'
 
+local gettext = dt.gettext
+gettext.bindtextdomain(MOD, dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext.gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "AutoGrouper",
+  purpose = _("automatically group images by time interval"),
+  author = "Kevin Ertel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/AutoGrouper/"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-local gettext = dt.gettext
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("AutoGrouper",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("AutoGrouper", msgid)
-end
-
 local Ag = {}
 Ag.module_installed = false
 Ag.event_registered = false

contrib/CollectHelper.lua

@@ -47,32 +47,38 @@ In the "Selected Images" module click on "Collect on this Image"
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 local previous = nil
 local all_active = false
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("CollectHelper",dt.configuration.config_dir.."/lua/locale/")
-
 du.check_min_api_version("7.0.0", "CollectHelper") 
 
+dt.gettext.bindtextdomain("CollectHelper", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "CollectHelper",
+  purpose = _("add collection helper buttons"),
+  author = "Kevin Ertel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/CollectHelper/"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-local function _(msgid)
-    return gettext.dgettext("CollectHelper", msgid)
-end
-
 -- FUNCTION --
 local function CheckSingleImage(selection)
 	if #selection ~= 1 then
-		dt.print(_("Please select a single image"))
+		dt.print(_("please select a single image"))
 		return true
 	end
 	return false
@@ -205,47 +211,47 @@ end
 dt.gui.libs.image.register_action(
 	"CollectHelper_prev", _("collect: previous"),
 	function() PreviousCollection() end,
-	_("Sets the Collect parameters to be the previously active parameters")
+	_("sets the collect parameters to be the previously active parameters")
 )
 if dt.preferences.read('module_CollectHelper','folder','bool') then
 		dt.gui.libs.image.register_action(
 		"CollectHelper_folder", _("collect: folder"),
 		function() CollectOnFolder(_ , false) end,
-		_("Sets the Collect parameters to be the selected images's folder")
+		_("sets the collect parameters to be the selected images's folder")
 	)
 end
 if dt.preferences.read('module_CollectHelper','colors','bool') then
 		dt.gui.libs.image.register_action(
 		"CollectHelper_labels", _("collect: color label(s)"),
 		function() CollectOnColors(_ , false) end,
-		_("Sets the Collect parameters to be the selected images's color label(s)")
+		_("sets the collect parameters to be the selected images's color label(s)")
 	)
 end
 if dt.preferences.read('module_CollectHelper','all_and','bool') then
 		dt.gui.libs.image.register_action(
 		"CollectHelper_and", _("collect: all (AND)"),
 		function() CollectOnAll_AND() end,
-		_("Sets the Collect parameters based on all activated CollectHelper options")
+		_("sets the collect parameters based on all activated CollectHelper options")
 	)
 end
 
 -- PREFERENCES --
 dt.preferences.register("module_CollectHelper", "all_and",	-- name
 	"bool",	-- type
-	_('CollectHelper: All'),	-- label
-	_('Will create a collect parameter set that utilizes all enabled CollectHelper types (AND)'),	-- tooltip
+	_('CollectHelper: all'),	-- label
+	_('will create a collect parameter set that utilizes all enabled CollectHelper types (and)'),	-- tooltip
 	true	-- default
 )
 dt.preferences.register("module_CollectHelper", "colors",	-- name
 	"bool",	-- type
-	_('CollectHelper: Color Label(s)'),	-- label
-	_('Enable the button that allows you to swap to a collection based on selected image\'s COLOR LABEL(S)'),	-- tooltip
+	_('CollectHelper: color label(s)'),	-- label
+	_('enable the button that allows you to swap to a collection based on selected image\'s color label(s)'),	-- tooltip
 	true	-- default
 )
 dt.preferences.register("module_CollectHelper", "folder",	-- name
 	"bool",	-- type
-	_('CollectHelper: Folder'),	-- label
-	_('Enable the button that allows you to swap to a collection based on selected image\'s FOLDER location'),	-- tooltip
+	_('CollectHelper: folder'),	-- label
+	_('enable the button that allows you to swap to a collection based on selected image\'s folder location'),	-- tooltip
 	true	-- default
 )
 

contrib/HDRMerge.lua

@@ -51,10 +51,26 @@ local dsys = require 'lib/dtutils.system'
 
 du.check_min_api_version("7.0.0", "HDRmerge") 
 
+-- Tell gettext where to find the .mo file translating messages for a particular domain
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("HDRMerge", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "HDRmerge",
+  purpose = _("merge bracketed images into an HDR DNG image"),
+  author = "Kevin Ertel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/HDRmerge"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -66,13 +82,6 @@ local os_path_seperator = '/'
 if dt.configuration.running_os == 'windows' then os_path_seperator = '\\' end
 local CURR_API_STRING = dt.configuration.api_version_string
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-local gettext = dt.gettext
-gettext.bindtextdomain('HDRMerge', dt.configuration.config_dir..'/lua/locale/')
-local function _(msgid)
-    return gettext.dgettext('HDRMerge', msgid)
-end
-
 local temp
 local HDRM = { --HDRMerge Program Table
   name = 'HDRMerge',
@@ -208,7 +217,7 @@ end
 local function main()
   PreCall({HDRM}) --check if furst run then check if install OK
   if HDRM.install_error then
-    dt.print_error(_('HDRMerge install issue'))
+    dt.print_error('HDRMerge install issue')
     dt.print(_('HDRMerge install issue, please ensure the binary path is proper'))
     return
   end
@@ -277,7 +286,7 @@ local function main()
     end
     dt.print(_('HDRMerge completed successfully'))
   else
-    dt.print_error(_('HDRMerge failed'))
+    dt.print_error('HDRMerge failed')
     dt.print(_('HDRMerge failed'))
   end
 
@@ -378,7 +387,7 @@ local lbl_import = dt.new_widget('section_label'){
 }
 GUI.Target.style = dt.new_widget('combobox'){
   label = _('apply style on import'),
-  tooltip = _('Apply selected style on auto-import to newly created image'),
+  tooltip = _('apply selected style on auto-import to newly created image'),
   selected = 1,
   _('none'),
   changed_callback = function(self)
@@ -407,9 +416,9 @@ GUI.Target.copy_tags = dt.new_widget('check_button'){
 temp = dt.preferences.read(mod, 'active_add_tags', 'string')
 if temp == '' then temp = nil end 
 GUI.Target.add_tags = dt.new_widget('entry'){
-  tooltip = _('Additional tags to be added on import. Seperate with commas, all spaces will be removed'),
+  tooltip = _('additional tags to be added on import, seperate with commas, all spaces will be removed'),
   text = temp,
-  placeholder = _('Enter tags, seperated by commas'),
+  placeholder = _('enter tags, seperated by commas'),
   editable = true
 }
 GUI.run = dt.new_widget('button'){
@@ -418,7 +427,7 @@ GUI.run = dt.new_widget('button'){
   clicked_callback = function() main() end
 }
 GUI.exes.HDRMerge = dt.new_widget('file_chooser_button'){
-  title = _('Select HDRmerge executable'),
+  title = _('select HDRmerge executable'),
   value = df.get_executable_path_preference(HDRM.name),
   is_directory = false
 }

contrib/LabelsToTags.lua

@@ -52,10 +52,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "LabelsToTags") 
 
+local gettext = darktable.gettext.gettext
+
+darktable.gettext.bindtextdomain("LabelsToTags", darktable.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "LabelsToTags",
+  purpose = _("allows the mass-application of tags using color labels and ratings as a guide"),
+  author = "August Schwerdfeger (august@schwerdfeger.name)",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/LabelsToTags"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -68,7 +83,7 @@ local ltt = {}
 ltt.module_installed = false
 ltt.event_registered = false
 
-local LIB_ID = "LabelsToTags"
+local LIB_ID = _("LabelsToTags")
 
 -- Helper functions: BEGIN
 
@@ -109,23 +124,23 @@ end
 
 
 local initialAvailableMappings = {
-   ["Colors"] = { ["+*****"] = { "Red" },
-      ["*+****"] = { "Yellow" },
-      ["**+***"] = { "Green" },
-      ["***+**"] = { "Blue" },
-      ["****+*"] = { "Purple" } },
-   ["Single colors"] = { ["+----*"] = { "Red", "Only red" },
-      ["-+---*"] = { "Yellow", "Only yellow" },
-      ["--+--*"] = { "Green", "Only green" },
-      ["---+-*"] = { "Blue", "Only blue" },
-      ["----+*"] = { "Purple", "Only purple" } },
-   ["Ratings"] = { ["*****0"] = { "No stars", "Not rejected" },
-      ["*****1"] = { "One star", "Not rejected" },
-      ["*****2"] = { "Two stars", "Not rejected" },
-      ["*****3"] = { "Three stars", "Not rejected" },
-      ["*****4"] = { "Four stars", "Not rejected" },
-      ["*****5"] = { "Five stars", "Not rejected" },
-      ["*****R"] = { "Rejected" } }
+   [_("colors")] = { ["+*****"] = { _("red") },
+      ["*+****"] = { _("yellow") },
+      ["**+***"] = { _("green") },
+      ["***+**"] = { _("blue") },
+      ["****+*"] = { _("purple") } },
+   [_("single colors")] = { ["+----*"] = { _("red"), _("only red") },
+      ["-+---*"] = { _("yellow"), _("only yellow") },
+      ["--+--*"] = { _("green"), _("only green") },
+      ["---+-*"] = { _("blue"), _("only blue") },
+      ["----+*"] = { _("purple"), _("only purple") } },
+   [_("ratings")] = { ["*****0"] = { _("no stars"), _("not rejected") },
+      ["*****1"] = { _("one star"), _("not rejected") },
+      ["*****2"] = { _("two stars"), _("not rejected") },
+      ["*****3"] = { _("three stars"), _("not rejected") },
+      ["*****4"] = { _("four stars"), _("not rejected") },
+      ["*****5"] = { _("five stars"), _("not rejected") },
+      ["*****R"] = { _("rejected") } }
 }
 
 local availableMappings = {}
@@ -140,14 +155,14 @@ end
 
 local function getComboboxTooltip()
    if availableMappings == nil or next(availableMappings) == nil then
-      return("No registered mappings -- using defaults")
+      return(_("no registered mappings -- using defaults"))
    else
-      return("Select a label-to-tag mapping")
+      return(_("select a label-to-tag mapping"))
    end
 end
 
 local mappingComboBox = darktable.new_widget("combobox"){
-   label = "mapping",
+   label = _("mapping"),
    value = 1,
    tooltip = getComboboxTooltip(),
    reset_callback = function(selfC)
@@ -170,7 +185,7 @@ local mappingComboBox = darktable.new_widget("combobox"){
 }
 
 local function doTagging(selfC)
-   local job = darktable.gui.create_job(string.format("labels to tags (%d image" .. (#(darktable.gui.action_images) == 1 and "" or "s") .. ")",#(darktable.gui.action_images)),true)
+   local job = darktable.gui.create_job(string.format(_("labels to tags (%d image%s)"), #(darktable.gui.action_images), (#(darktable.gui.action_images) == 1 and "" or "s")), true)
    job.percent = 0.0
    local pctIncrement = 1.0 / #(darktable.gui.action_images)
 

contrib/OpenInExplorer.lua

@@ -51,33 +51,39 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 --Check API version
 du.check_min_api_version("7.0.0", "OpenInExplorer") 
 
+dt.gettext.bindtextdomain("OpenInExplorer", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "OpenInExplorer",
+  purpose = _("open a selected file in the system file manager"),
+  author = "Kevin Ertel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/OpenInExplorer"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("OpenInExplorer",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("OpenInExplorer", msgid)
-end
-
 local act_os = dt.configuration.running_os
 local PS = act_os == "windows" and  "\\"  or  "/"
 
 --Detect OS and quit if it is not supported.	
 if act_os ~= "macos" and act_os ~= "windows" and act_os ~= "linux" then
-  dt.print(_("OpenInExplorer plug-in only supports Linux, macOS, and Windows at this time"))
+  dt.print(_("OpenInExplorer plug-in only supports linux, macos, and windows at this time"))
   dt.print_error("OpenInExplorer plug-in only supports Linux, macOS, and Windows at this time")
   return
 end
@@ -93,11 +99,11 @@ local function check_if_links_dir_exists()
   local dir_exists = true
   if not links_dir then
     --Just for paranoic reasons. I tried, but I couldn't devise a setting for a nil value.
-    dt.print(_("No links directory selected.\nPlease check the dt preferences (lua options)"))
+    dt.print(_("no links directory selected\nplease check the dt preferences (lua options)"))
     dt.print_error("OpenInExplorer: No links directory selected")
     dir_exists = false
   elseif not df.check_if_file_exists(links_dir) then
-    dt.print(string.format(_("Links directory '%s' not found.\nPlease check the dt preferences (lua options)"), links_dir))
+    dt.print(string.format(_("links directory '%s' not found\nplease check the dt preferences (lua options)"), links_dir))
     dt.print_error(string.format("OpenInExplorer: Links directory '%s' not found", links_dir))
     dir_exists = false
   end
@@ -112,9 +118,26 @@ open_dir.linux = [[busctl --user call org.freedesktop.FileManager1 /org/freedesk
 
 local open_files = {}
 open_files.windows = "explorer.exe /select, %s"
-open_files.macos = "open -Rn %s"
+open_files.macos = "osascript -e 'tell application \"Finder\" to (reveal {%s}) activate'"
 open_files.linux = [[busctl --user call org.freedesktop.FileManager1 /org/freedesktop/FileManager1 org.freedesktop.FileManager1 ShowItems ass %d %s ""]]
 
+reveal_file_osx_cmd = "\"%s\" as POSIX file"
+
+--Call the osx Finder with each selected image selected.
+--For images in multiple folders, Finder will open a separate window for each
+local function call_list_of_files_osx(selected_images)
+  local cmds = {}
+  for _, image in pairs(selected_images) do
+    current_image = image.path..PS..image.filename
+    -- AppleScript needs double quoted strings, and the whole command is wrapped in single quotes.
+    table.insert(cmds, string.format(reveal_file_osx_cmd, string.gsub(string.gsub(current_image, "\"", "\\\""), "'", "'\"'\"'")))
+  end
+  reveal_cmd = table.concat(cmds, ",")
+  run_cmd = string.format(open_files.macos, reveal_cmd)
+  dt.print_log("OSX run_cmd = "..run_cmd)
+  dsys.external_command(run_cmd)
+end
+
 --Call the file mangager for each selected image on Linux.
 --There is one call to busctl containing a list of all the image file names.
 local function call_list_of_files(selected_images)
@@ -154,7 +177,7 @@ local function set_links(selected_images)
     end
     ]]
     if dsys.external_command(run_cmd) ~= 0 then
-      dt.print(_("Failed to create links. Missing rights?"))
+      dt.print(_("failed to create links, missing rights?"))
       dt.print_error("OpenInExplorer: Failed to create links")
       return
     end
@@ -170,18 +193,20 @@ end
 local function open_in_fmanager()
   local images = dt.gui.selection()
   if #images == 0 then
-    dt.print(_("Please select an image"))
+    dt.print(_("please select an image"))
   else
     if use_links and not check_if_links_dir_exists() then
       return
     end
     if #images > 15 and not use_links then
-      dt.print(_("Please select fewer images (max. 15)"))
+      dt.print(_("please select fewer images (max. 15)"))
     elseif use_links then
       set_links(images)
     else
       if act_os == "linux" then
         call_list_of_files(images)
+      elseif act_os == "macos" then
+        call_list_of_files_osx(images)
       else
         call_file_by_file(images)
       end
@@ -203,7 +228,7 @@ end
 dt.gui.libs.image.register_action(
   "OpenInExplorer", _("show in file explorer"),
   function() open_in_fmanager() end,
-  _("Open the file manager at the selected image's location")
+  _("open the file manager at the selected image's location")
 )
   
 
@@ -211,17 +236,17 @@ if act_os ~= "windows" then
   dt.preferences.register("OpenInExplorer", "linked_image_files_dir",  -- name
     "directory", -- type
     _("OpenInExplorer: linked files directory"), -- label
-    _("Directory to store the links to the file names. Requires restart to take effect"),  -- tooltip
+    _("directory to store the links to the file names, requires restart to take effect"),  -- tooltip
     "Links to image files",  -- default
     dt.new_widget("file_chooser_button"){
-      title = _("Select directory"),
+      title = _("select directory"),
       is_directory = true,
     }
   )
   dt.preferences.register("OpenInExplorer", "use_links",  -- name
     "bool", -- type
     _("OpenInExplorer: use links"), -- label
-    _("Use links instead of multiple windows. Requires restart to take effect"),  -- tooltip
+    _("use links instead of multiple windows, requires restart to take effect"),  -- tooltip
     false,  -- default
     ""
   )

contrib/RL_out_sharp.lua

@@ -65,10 +65,26 @@ local MODULE_NAME = "RL_out_sharp"
 -- check API version
 du.check_min_api_version("7.0.0", MODULE_NAME) 
 
+-- translation
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("RL_out_sharp", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+  end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "RL_out_sharp",
+  purpose = _("Richardson-Lucy output sharpening using GMic"),
+  author = "Marco Carrarini <marco.carrarini@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/RL_out_sharp"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -77,20 +93,24 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 -- OS compatibility
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
 
--- translation
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
-local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
-  end
-
 -- initialize module preferences
 if not dt.preferences.read(MODULE_NAME, "initialized", "bool") then
   dt.preferences.write(MODULE_NAME, "sigma", "string", "0.7")
   dt.preferences.write(MODULE_NAME, "iterations", "string", "10")
   dt.preferences.write(MODULE_NAME, "jpg_quality", "string", "95")
   dt.preferences.write(MODULE_NAME, "initialized", "bool", true)
+end 
+
+-- preserve original image metadata in the output image -----------------------
+local function preserve_metadata(original, sharpened)
+  local exiftool = df.check_if_bin_exists("exiftool")
+
+  if exiftool then
+    dtsys.external_command("exiftool -overwrite_original_in_place -tagsFromFile " .. original .. " " .. sharpened)
+  else
+    dt.print_log(MODULE .. " exiftool not found,  metadata not preserved")
   end
+end
 
 
 -- setup export ---------------------------------------------------------------
@@ -137,7 +157,7 @@ local function export2RL(storage, image_table, extra_data)
   for image, temp_name in pairs(image_table) do
 
     i = i + 1
-    dt.print(_("sharpening image ")..i.." ...")
+    dt.print(string.format(_("sharpening image %d ..."), i))
     -- create unique filename
     new_name = output_folder..PS..df.get_basename(temp_name)..".jpg"
     new_name = df.create_unique_filename(new_name)
@@ -154,7 +174,10 @@ local function export2RL(storage, image_table, extra_data)
     if result ~= 0 then
       dt.print(_("sharpening error"))
       return
-      end
+    end
+
+    -- copy metadata from input_file to output_file
+    preserve_metadata(input_file, output_file)
 
     -- delete temp image
     os.remove(temp_name) 

contrib/auto_snapshot.lua

@@ -0,0 +1,134 @@
+--[[
+
+    auto_snapshot.lua - automatically take a snapshot when an image is loaded in darkroom
+
+    Copyright (C) 2024 Bill Ferguson <wpferguson@gamil.com>.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+]]
+--[[
+    auto_snapshot - 
+
+    automatically take a snapshot when an image is loaded in darkroom
+
+    ADDITIONAL SOFTWARE NEEDED FOR THIS SCRIPT
+    None
+
+    USAGE
+    * start the script from script_manager
+    * open an image in darkroom
+
+    BUGS, COMMENTS, SUGGESTIONS
+    Bill Ferguson <wpferguson@gamil.com>
+
+    CHANGES
+]]
+
+local dt = require "darktable"
+local du = require "lib/dtutils"
+local log = require "lib/dtutils.log"
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- C O N S T A N T S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local MODULE <const> = "auto_snapshot"
+local DEFAULT_LOG_LEVEL <const> = log.error
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- A P I  C H E C K
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+du.check_min_api_version("7.0.0", MODULE)   -- choose the minimum version that contains the features you need
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- I 1 8 N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain(MODULE , dt.configuration.config_dir .. "/lua/locale/")
+
+local function _(msgid)
+    return gettext(MODULE, msgid)
+end
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- S C R I P T  M A N A G E R  I N T E G R A T I O N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local script_data = {}
+
+script_data.destroy = nil           -- function to destory the script
+script_data.destroy_method = nil    -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil           -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil              -- only required for libs since the destroy_method only hides them
+
+script_data.metadata = {
+  name = "auto_snapshot",            -- name of script
+  purpose = _("automatically take a snapshot when an image is loaded in darkroom"),   -- purpose of script
+  author = "Bill Ferguson <wpferguson@gamil.com>",          -- your name and optionally e-mail address
+  help = ""                   -- URL to help/documentation
+}
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- L O G  L E V E L
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+log.log_level(DEFAULT_LOG_LEVEL)
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- N A M E  S P A C E
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local auto_snapshot = {}
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- P R E F E R E N C E S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+dt.preferences.register(MODULE, "always_create_snapshot", "bool", "always automatically create_snapshot", 
+    "auto_snapshot - create a snapshot even if the image is altered", false)
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- D A R K T A B L E  I N T E G R A T I O N 
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local function destroy()
+  dt.destroy_event(MODULE, "darkroom-image-loaded")
+end
+
+script_data.destroy = destroy
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- E V E N T S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+dt.register_event(MODULE, "darkroom-image-loaded",
+  function(event, clean, image)
+    local always = dt.preferences.read(MODULE, "always_create_snapshot", "bool")
+    if clean and always then
+      dt.gui.libs.snapshots.take_snapshot()
+    elseif clean and not image.is_altered then
+      dt.gui.libs.snapshots.take_snapshot()
+    end
+
+  end 
+)
+
+
+return script_data

contrib/autostyle.lua

@@ -39,13 +39,28 @@ GPLv2
 local darktable = require "darktable"
 local du = require "lib/dtutils"
 local filelib = require "lib/dtutils.file"
+local syslib = require "lib/dtutils.system"
 
 du.check_min_api_version("7.0.0", "autostyle") 
 
+local gettext = darktable.gettext.gettext
+darktable.gettext.bindtextdomain("autostyle", darktable.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "autostyle",
+  purpose = _("automatically apply a style based on image EXIF tag"),
+  author = "Marc Cousin <cousinmarc@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/autostyle/"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -92,19 +107,19 @@ local function autostyle_apply_one_image (image)
 
   -- check they all exist (correct syntax)
   if (not tag) then
-	  darktable.print("EXIF TAG not found in " .. pref)
+	  darktable.print(string.format(_("EXIF tag not found in %s"), pref))
 	  return 0
   end
   if (not value) then
-	  darktable.print("value to match not found in " .. pref)
+	  darktable.print(string.format(_("value to match not found in %s"), pref))
 	  return 0
   end
   if (not style_name) then
-	  darktable.print("style name not found in " .. pref)
+	  darktable.print(string.format(_("style name not found in %s"), pref))
 	  return 0
   end
   if not filelib.check_if_bin_exists("exiftool") then
-	  darktable.print("Can't find exiftool")
+	  darktable.print(_("can't find exiftool"))
     return 0
   end
 	
@@ -118,7 +133,7 @@ local function autostyle_apply_one_image (image)
 	  end
   end
   if (not style) then
-	  darktable.print("style not found for autostyle: " .. style_name)
+	  darktable.print(string.format(_("style not found for autostyle: %s"), style_name))
     return 0
   end
 
@@ -127,7 +142,7 @@ local function autostyle_apply_one_image (image)
   --darktable.print_error("dr_attr:" .. auto_dr_attr)
   -- If the lookup fails, stop here
   if (not ok) then
-    darktable.print("Couldn't get attribute " .. auto_dr_attr .. " from exiftool's output")
+    darktable.print(string.format(_("couldn't get attribute %s from exiftool's output"), auto_dr_attr))
     return 0
   end
   if auto_dr_attr == value then
@@ -154,7 +169,7 @@ local function autostyle_apply(shortcut)
     images_submitted = images_submitted + 1
     images_processed = images_processed + autostyle_apply_one_image(image)
   end
-  darktable.print("Applied auto style to " .. images_processed .. " out of " .. images_submitted .. " image(s)")
+  darktable.print(string.format(_("applied auto style to %d out of %d image(s)"), images_processed, images_submitted))
 end
 
 local function destroy()
@@ -164,9 +179,9 @@ end
 
 -- Registering events
 darktable.register_event("autostyle", "shortcut", autostyle_apply,
-       "Apply your chosen style from exiftool tags")
+       _("apply your chosen style from exiftool tags"))
 
-darktable.preferences.register("autostyle", "exif_tag", "string", "Autostyle: EXIF_tag=value=>style", "apply a style automatically if an EXIF_tag matches value. Find the tag with exiftool", "")
+darktable.preferences.register("autostyle", "exif_tag", "string", "Autostyle: EXIF_tag=value=>style", _("apply a style automatically if an EXIF tag matches value, find the tag with exiftool"), "")
 
 darktable.register_event("autostyle", "post-import-image",
   autostyle_apply_one_image_event)

contrib/change_group_leader.lua

@@ -36,28 +36,34 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext 
 
 local MODULE = "change_group_leader"
 
+dt.gettext.bindtextdomain(MODULE, dt.configuration.config_dir .."/lua/locale/")
+
 du.check_min_api_version("3.0.0", MODULE)
 
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "change_group_leader",
+  purpose = _("automatically change the leader of raw+jpg paired image groups"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/change_group_leader"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain(MODULE, dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext(MODULE, msgid)
-end
-
 -- create a namespace to contain persistent data and widgets
 chg_grp_ldr = {}
 
@@ -121,7 +127,7 @@ end
 
 local function process_image_groups(images)
   if #images < 1 then
-    dt.print(_("No images selected."))
+    dt.print(_("no images selected"))
     dt.print_log(MODULE .. "no images seletected, returning...")
   else
     local mode = cgl.widgets.mode.value
@@ -161,7 +167,7 @@ cgl.widgets.mode = dt.new_widget("combobox"){
 }
 
 cgl.widgets.execute = dt.new_widget("button"){
-  label = _("Execute"),
+  label = _("execute"),
   clicked_callback = function()
     process_image_groups(dt.gui.action_images)
   end

contrib/clear_GPS.lua

@@ -39,29 +39,34 @@
 local dt = require "darktable"
 local du = require "lib/dtutils"
 
+local gettext = dt.gettext.gettext 
+dt.gettext.bindtextdomain("clear_GPS", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "clear_GPS",
+  purpose = _("remove GPS data from selected image(s)"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/clear_gps/"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-local gettext = dt.gettext
-
 -- not a number
 local NaN = 0/0
 
 du.check_min_api_version("7.0.0", "clear_GPS") 
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("clear_GPS",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("clear_GPS", msgid)
-end
-
 local function clear_GPS(images)
   for _, image in ipairs(images) do
     -- set the location information to Not a Number (NaN) so it displays correctly
@@ -81,13 +86,13 @@ script_data.destroy = destroy
 dt.gui.libs.image.register_action(
   "clear_GPS", _("clear GPS data"),
   function(event, images) clear_GPS(images) end,
-  _("Clear GPS data from selected images")
+  _("clear GPS data from selected images")
 )
 
 dt.register_event(
   "clear_GPS", "shortcut",
   function(event, shortcut) clear_GPS(dt.gui.action_images) end,
-  _("Clear GPS data")
+  _("clear GPS data")
 )
 
 return script_data

contrib/color_profile_manager.lua

@@ -45,6 +45,7 @@
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
+local dtsys = require "lib/dtutils.system"
 
 du.check_min_api_version("7.0.0", "color_profile_manager")
 
@@ -52,13 +53,12 @@ du.check_min_api_version("7.0.0", "color_profile_manager")
 -- L O C A L I Z A T I O N
 -- - - - - - - - - - - - - - - - - - - - - - - -
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("color_profile_manager", dt.configuration.config_dir .. "/lua/locale/")
+dt.gettext.bindtextdomain("color_profile_manager", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-    return gettext.dgettext("color_profile_manager", msgid)
+    return gettext(msgid)
 end
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
@@ -119,13 +119,13 @@ end
 
 local function add_profile(file, dir)
   df.file_copy(file, dir)
-  dt.print(_("added color profile " .. file .. " to " .. dir))
+  dt.print(string.format(_("added color profile %s to %s"), file, dir))
   dt.print_log("color profile " .. file .. " added to " .. dir)
 end
 
 local function remove_profile(file, dir)
   os.remove(dir .. PS .. file)
-  dt.print(_("removed color profile " .. file .. " from " .. dir))
+  dt.print(string.format(_("removed color profile %s from %s"), file, dir))
   dt.print_log("color profile " .. file .. " removed from " .. dir)
 end
 
@@ -364,6 +364,13 @@ end
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "color_profile_manager",
+  purpose = _("manage external darktable color profiles"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/color_profile_manager"
+}
+
 script_data.destroy = destroy
 script_data.restart = restart
 script_data.destroy_method = "hide"

contrib/copy_attach_detach_tags.lua

@@ -40,26 +40,32 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local debug = require "darktable.debug"
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "copy_attach_detach_tags") 
 
+dt.gettext.bindtextdomain("copy_attach_detach_tags", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "copy_attach_detach_tags",
+  purpose = _("shortcuts to copy, paste, replace, or remove tags from images"),
+  author = "Christian Kanzian",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/copy_attach_detach_tags"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("copy_attach_detach_tags",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("copy_attach_detach_tags", msgid)
-end
-
 local cadt = {}
 cadt.module_installed = false
 cadt.event_registered = false
@@ -99,7 +105,7 @@ local function mcopy_tags()
          end
       end
 
-      dt.print(_('Image tags copied ...'))
+      dt.print(_('image tags copied ...'))
 
      --create UI tag list
      local taglist = ""
@@ -121,7 +127,7 @@ local function mcopy_tags()
 local function attach_tags()
 
   if next(image_tags) == nil then
-    dt.print(_('No tag to attach, please copy tags first.'))
+    dt.print(_('no tag to attach, please copy tags first.'))
     return true
   end
 
@@ -145,7 +151,7 @@ local function attach_tags()
       end
     end
   end
- dt.print(_('Tags attached ...'))
+ dt.print(_('tags attached ...'))
 end
 
 local function detach_tags()
@@ -161,13 +167,13 @@ local function detach_tags()
         end
       end
    end
-  dt.print(_('Tags removed from image(s).'))
+  dt.print(_('tags removed from image(s).'))
 end
 
 local function replace_tags()
   detach_tags()
   attach_tags()
-  dt.print(_('Tags replaced'))
+  dt.print(_('tags replaced'))
 end
 
 local function install_module()

contrib/cr2hdr.lua

@@ -37,10 +37,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "cr2hdr") 
 
+local gettext = darktable.gettext.gettext
+
+darktable.gettext.bindtextdomain("cr2hdr", darktable.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "cr2hdr",
+  purpose = _("process Magic Lantern dual ISO images"),
+  author = "Till Theato <theato@ttill.de>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/cr2hdr"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -87,7 +102,7 @@ end
 local function convert_images()
     if next(queue) == nil then return end
 
-    job = darktable.gui.create_job("Dual ISO conversion", true, stop_conversion)
+    job = darktable.gui.create_job(_("dual ISO conversion"), true, stop_conversion)
     for key,image in pairs(queue) do
         if job.valid then
             job.percent = (key-1)/#queue
@@ -98,7 +113,7 @@ local function convert_images()
     end
     local success_count = 0
     for _ in pairs(processed_files) do success_count = success_count + 1 end
-    darktable.print("Dual ISO conversion successful on " .. success_count .. "/" .. #queue .. " images.")
+    darktable.print(string.format(_("dual ISO conversion successful on %d/%d images."), success_count, #queue))
     job.valid = false
     processed_files = {}
     queue = {}
@@ -122,13 +137,13 @@ local function destroy()
 end
 
 darktable.register_event("cr2hdr", "shortcut", 
-    convert_action_images, "Run cr2hdr (Magic Lantern DualISO converter) on selected images")
+    convert_action_images, _("run cr2hdr (Magic Lantern DualISO converter) on selected images"))
 darktable.register_event("cr2hdr", "post-import-image", 
     file_imported)
 darktable.register_event("cr2hdr", "post-import-film", 
     film_imported)
 
-darktable.preferences.register("cr2hdr", "onimport", "bool", "Invoke on import", "If true then cr2hdr will try to proccess every file during importing. Warning: cr2hdr is quite slow even in figuring out on whether the file is Dual ISO or not.", false)
+darktable.preferences.register("cr2hdr", "onimport", "bool", _("invoke on import"), _("if true then cr2hdr will try to proccess every file during importing\nwarning: cr2hdr is quite slow even in figuring out on whether the file is dual ISO or not."), false)
 
 script_data.destroy = destroy 
 

contrib/cycle_group_leader.lua

@@ -1,6 +1,6 @@
 --[[
 
-    cycle_group_leader.lua - change image grouip leader
+    cycle_group_leader.lua - change image group leader
 
     Copyright (C) 2024 Bill Ferguson <wpferguson@gmail.com>
 
@@ -54,30 +54,36 @@ local MODULE = "cycle_group_leader"
 du.check_min_api_version("7.0.0", MODULE) 
 
 
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- I 1 8 N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("cycle_group_leader", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 -- S C R I P T  M A N A G E R  I N T E G R A T I O N
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "cycle_group_leader",
+  purpose = _("change image group leader"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/cycle_group_leader"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- - - - - - - - - - - - - - - - - - - - - - - - - -
--- I 1 8 N
--- - - - - - - - - - - - - - - - - - - - - - - - - -
-
-local gettext = dt.gettext
-
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain(MODULE, dt.configuration.config_dir .. "/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext(MODULE, msgid)
-end
-
 -- - - - - - - - - - - - - - - - - - - - - - - - 
 -- F U N C T I O N S
 -- - - - - - - - - - - - - - - - - - - - - - - - 
@@ -100,7 +106,7 @@ end
 local function cycle_group_leader(image)
   local group_images = image:get_group_members()
   if #group_images < 2 then
-    hinter_msg(_("No images to cycle to in group"))
+    hinter_msg(_("no images to cycle to in group"))
     return
   else
     local position = nil
@@ -147,7 +153,7 @@ dt.register_event(MODULE, "shortcut",
     -- ignore the film roll, it contains all the images, not just the imported
     local images = dt.gui.selection()
     if #images < 1 then
-      dt.print(_("No image selected.  Please select an image and try again"))
+      dt.print(_("no image selected, please select an image and try again"))
     else
       cycle_group_leader(images[1])
     end

contrib/dbmaint.lua

@@ -0,0 +1,314 @@
+--[[
+
+    dbmaint.lua - perform database maintenance
+
+    Copyright (C) 2024 Bill Ferguson <wpferguson@gamil.com>.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+]]
+--[[
+    dbmaint - perform database maintenance
+
+    Perform database maintenance to clean up missing images and filmstrips.
+
+    ADDITIONAL SOFTWARE NEEDED FOR THIS SCRIPT
+    None
+
+    USAGE
+    * start dbmaint from script_manager
+    * scan for missing film rolls or missing images
+    * look at the results and choose to delete or not
+
+    BUGS, COMMENTS, SUGGESTIONS
+    Bill Ferguson <wpferguson@gamil.com>
+
+    CHANGES
+]]
+
+local dt = require "darktable"
+local du = require "lib/dtutils"
+local df = require "lib/dtutils.file"
+local log = require "lib/dtutils.log"
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- C O N S T A N T S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local MODULE <const> = "dbmaint"
+local DEFAULT_LOG_LEVEL <const> = log.error
+local PS <const> = dt.configuration.running_os == "windows" and "\\" or "/"
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- A P I  C H E C K
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+du.check_min_api_version("7.0.0", MODULE)   -- choose the minimum version that contains the features you need
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- I 1 8 N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain(MODULE , dt.configuration.config_dir .. "/lua/locale/")
+
+local function _(msgid)
+    return gettext(MODULE, msgid)
+end
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- S C R I P T  M A N A G E R  I N T E G R A T I O N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local script_data = {}
+
+script_data.destroy = nil           -- function to destory the script
+script_data.destroy_method = nil    -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil           -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil              -- only required for libs since the destroy_method only hides them
+
+script_data.metadata = {
+  name = "dbmaint",
+  purpose = _("perform database maintenance"),
+  author = "Bill Ferguson <wpferguson@gamil.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/dbmaint/"
+}
+
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- L O G  L E V E L
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+log.log_level(DEFAULT_LOG_LEVEL)
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- N A M E  S P A C E
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local dbmaint = {}
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- G L O B A L  V A R I A B L E S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+dbmaint.main_widget = nil
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- A L I A S E S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local namespace = dbmaint
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- F U N C T I O N S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local function scan_film_rolls()
+  local missing_films = {}
+
+  for _, filmroll in ipairs(dt.films) do
+    if not df.check_if_file_exists(filmroll.path) then
+      table.insert(missing_films, filmroll)
+    end
+  end
+
+  return missing_films
+end
+
+local function scan_images(film)
+  local missing_images = {}
+
+  if film then
+    for i = 1, #film  do
+      local image = film[i]
+      log.log_msg(log.debug, "checking " .. image.filename)
+      if not df.check_if_file_exists(image.path .. PS .. image.filename) then
+        log.log_msg(log.info, image.filename .. " not found")
+        table.insert(missing_images, image)
+      end
+    end
+  end
+
+  return missing_images
+end
+
+local function remove_missing_film_rolls(list)
+  for _, filmroll in ipairs(list) do 
+    filmroll:delete(true)
+  end
+end
+
+-- force the lighttable to reload
+
+local function refresh_lighttable(film)
+  local rules = dt.gui.libs.collect.filter()
+  dt.gui.libs.collect.filter(rules)
+end
+
+local function remove_missing_images(list)
+  local film = list[1].film
+  for _, image in ipairs(list) do
+    image:delete()
+  end
+  refresh_lighttable(film)
+end
+
+local function install_module()
+  if not namespace.module_installed then
+    dt.register_lib(
+      MODULE,     -- Module name
+      _("DB maintenance"),     -- Visible name
+      true,                -- expandable
+      true,               -- resetable
+      {[dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_LEFT_CENTER", 0}},   -- containers
+      namespace.main_widget,
+      nil,-- view_enter
+      nil -- view_leave
+    )
+    namespace.module_installed = true
+  end
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- U S E R  I N T E R F A C E
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+dbmaint.list_widget = dt.new_widget("text_view"){
+  editable = false,
+  reset_callback = function(this)
+    this.text = ""
+  end
+}
+
+dbmaint.chooser = dt.new_widget("combobox"){
+  label = "scan for",
+  selected = 1,
+  "film rolls", "images",
+  reset_callback = function(this)
+    this.selected = 1
+  end
+}
+
+dbmaint.scan_button = dt.new_widget("button"){
+  label = "scan",
+  tooltip = "click to scan for missing film rolls/files",
+  clicked_callback = function(this)
+    local found = nil
+    local found_text = ""
+    if dbmaint.chooser.value == "film rolls" then
+      found = scan_film_rolls()
+      if #found > 0 then
+        for _, film in ipairs(found) do
+          local dir_name = du.split(film.path, PS)
+          found_text = found_text .. dir_name[#dir_name] .. "\n"
+        end
+      end
+    else
+      log.log_msg(log.debug, "checking path " .. dt.collection[1].path .. " for missing files")
+      found = scan_images(dt.collection[1].film)
+      if #found > 0 then
+        for _, image in ipairs(found) do
+          found_text = found_text .. image.filename .. "\n"
+        end
+      end
+    end
+    if #found > 0 then
+      dbmaint.list_widget.text = found_text
+      dbmaint.found = found
+      dbmaint.remove_button.sensitive = true
+    end
+  end,
+  reset_callback = function(this)
+    dbmaint.found = nil
+  end
+}
+
+dbmaint.remove_button = dt.new_widget("button"){
+  label = "remove",
+  tooltip = "remove missing film rolls/images",
+  sensitive = false,
+  clicked_callback = function(this)
+    if dbmaint.chooser.value == "film rolls" then
+      remove_missing_film_rolls(dbmaint.found)
+    else
+      remove_missing_images(dbmaint.found)
+    end
+    dbmaint.found = nil
+    dbmaint.list_widget.text = ""
+    this.sensitive = false
+  end,
+  reset_callback = function(this)
+    this.sensitive = false
+  end
+}
+
+dbmaint.main_widget = dt.new_widget("box"){
+  orientation = "vertical",
+  dt.new_widget("section_label"){label = "missing items"},
+  dbmaint.list_widget,
+  dt.new_widget("label"){label = ""},
+  dbmaint.chooser,
+  dt.new_widget("label"){label = ""},
+  dbmaint.scan_button,
+  dbmaint.remove_button
+}
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- D A R K T A B L E  I N T E G R A T I O N 
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+local function destroy()
+  dt.gui.libs[MODULE].visible = false
+
+  if namespace.event_registered then
+    dt.destroy_event(MODULE, "view-changed")
+  end
+
+  return
+end
+
+local function restart()
+  dt.gui.libs[MODULE].visible = true
+
+  return
+end
+
+script_data.destroy = destroy
+script_data.restart = restart
+script_data.destroy_method = "hide"
+script_data.show = restart
+
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+-- E V E N T S
+-- - - - - - - - - - - - - - - - - - - - - - - - 
+
+if dt.gui.current_view().id == "lighttable" then
+  install_module()
+else
+  if not namespace.event_registered then
+    dt.register_event(MODULE, "view-changed",
+      function(event, old_view, new_view)
+        if new_view.name == "lighttable" and old_view.name == "darkroom" then
+          install_module()
+         end
+      end
+    )
+    namespace.event_registered = true
+  end
+end
+
+return script_data

contrib/enfuseAdvanced.lua

@@ -67,22 +67,31 @@ if dt.configuration.running_os == 'windows' then os_path_seperator = '\\' end
 
 du.check_min_api_version("7.0.0", "enfuseAdvanced") 
 
+-- Tell gettext where to find the .mo file translating messages for a particular domain
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("enfuseAdvanced", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "enfuseAdvanced",
+  purpose = _("focus stack or exposure blend images"),
+  author = "Kevin Ertel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/enfuseAdvanced"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-local gettext = dt.gettext
-gettext.bindtextdomain('enfuseAdvanced',dt.configuration.config_dir..'/lua/locale/')
-local function _(msgid)
-    return gettext.dgettext('enfuseAdvanced', msgid)
-end
-
 -- INITS --
 local AIS = {
     name = 'align_image_stack',
@@ -260,7 +269,7 @@ local function ExeUpdate(prog_tbl) --updates executable paths and verifies them
         if not prog.bin then 
             prog.install_error = true
             dt.preferences.write(mod, 'bin_exists', 'bool', false)
-            dt.print(_('issue with ')..prog.name.._(' executable'))
+            dt.print(string.format(_("issue with %s executable"), prog.name))
         else
             prog.bin = CleanSpaces(prog.bin)
         end
@@ -377,7 +386,7 @@ local function SaveToPreference(preset) --save the present values of enfuse GUI
             dt.preferences.write(mod, preset..argument, arg_data.style, temp)
         end
     end
-    dt.print(_('saved to ')..preset)
+    dt.print(string.format(_("saved to %s"), preset))
 end
 
 local function LoadFromPreference(preset) --load values from the specified 'preset' into the GUI elements
@@ -393,7 +402,7 @@ local function LoadFromPreference(preset) --load values from the specified 'pres
             dt.preferences.write(mod, 'active_'..argument, arg_data.style, temp)
         end     
     end
-    dt.print(_('loaded from ')..preset)
+    dt.print(string.format(_("loaded from %s"), preset))
 end
 
 local function remove_temp_files(images_to_remove) --deletes all files specified by the input string
@@ -428,7 +437,7 @@ local function support_format(storage, format) --tells dt we only support TIFF e
 end
 
 local function show_status(storage, image, format, filename, number, total, high_quality, extra_data) --outputs message to user showing script export status
-    dt.print(_('export for image fusion ')..tostring(math.floor(number))..' / '..tostring(math.floor(total)))
+    dt.print(string.format(_("export for image fusion %d / %d"), math.floor(number), math.floor(total)))
 end
 
 local function main(storage, image_table, extra_data)
@@ -456,8 +465,8 @@ local function main(storage, image_table, extra_data)
         job.valid = false
         if resp ~= 0 then
             remove_temp_files(images_to_remove)
-            dt.print_error(AIS.name.._(' failed'))
-            dt.print(AIS.name.._(' failed'))
+            dt.print(string.format(_("%s failed"), AIS.name))
+            dt.print_error(AIS.name .. ' failed')
             return
         end
     end
@@ -483,8 +492,8 @@ local function main(storage, image_table, extra_data)
         local resp = dsys.external_command(run_cmd)
         if resp ~= 0 then
             remove_temp_files(images_to_remove)
-            dt.print_error(ENF.name.._(' failed'))
-            dt.print(ENF.name.._(' failed'))
+            dt.print_error(ENF.name..' failed')
+            dt.print(string.format(_("%s failed"), ENF.name))
             return
         end
         
@@ -729,7 +738,7 @@ GUI.ENF.hard_masks = dt.new_widget('check_button'){
 GUI.ENF.save_masks = dt.new_widget('check_button'){
     label = _('save masks'), 
     value = dt.preferences.read(mod, 'active_save_masks', 'bool'),
-    tooltip = _('Save the generated weight masks to your home directory,\nenblend saves masks as 8 bit grayscale, \ni.e. single channel images. \nfor accuracy we recommend to choose a lossless format.'),  
+    tooltip = _('save the generated weight masks to your home directory,\nenblend saves masks as 8 bit grayscale, \ni.e. single channel images. \nfor accuracy we recommend to choose a lossless format.'),  
     clicked_callback = function(self) dt.preferences.write(mod, 'active_save_masks', 'bool', self.value) end,
     reset_callback = function(self) self.value = false end
 }
@@ -882,7 +891,7 @@ GUI.Target.output_directory = dt.new_widget('file_chooser_button'){
 GUI.Target.source_location = dt.new_widget('check_button'){
     label = _('save to source image location'), 
     value = dt.preferences.read(mod, 'active_source_location', 'bool'),
-    tooltip = _('If checked ignores the location above and saves output image(s) to the same location as the source images.'),  
+    tooltip = _('if checked ignores the location above and saves output image(s) to the same location as the source images.'),  
     clicked_callback = function(self) dt.preferences.write(mod, 'active_source_location', 'bool', self.value) end,
     reset_callback = function(self) self.value = true end
 }
@@ -916,8 +925,8 @@ GUI.Target.auto_import = dt.new_widget('check_button'){
 }
 temp = dt.preferences.read(mod, 'active_apply_style_ind', 'integer')
 GUI.Target.apply_style = dt.new_widget('combobox'){
-    label = _('Apply Style on Import'),
-    tooltip = _('Apply selected style on auto-import to newly created blended image'),
+    label = _('apply style on Import'),
+    tooltip = _('apply selected style on auto-import to newly created blended image'),
     selected = 1,
     'none',
     changed_callback = function(self)
@@ -938,16 +947,16 @@ GUI.Target.apply_style.selected = temp
 GUI.Target.copy_tags = dt.new_widget('check_button'){
     label = _('copy tags'), 
     value = dt.preferences.read(mod, 'active_copy_tags', 'bool'),
-    tooltip = _('Copy tags from first image.'), 
+    tooltip = _('copy tags from first image.'), 
     clicked_callback = function(self) dt.preferences.write(mod, 'active_copy_tags', 'bool', self.value) end,
     reset_callback = function(self) self.value = true end
 }
 temp = dt.preferences.read(mod, 'active_add_tags', 'string')
 if temp == '' then temp = nil end 
 GUI.Target.add_tags = dt.new_widget('entry'){
-    tooltip = _('Additional tags to be added on import. Seperate with commas, all spaces will be removed'),
+    tooltip = _('additional tags to be added on import, seperate with commas, all spaces will be removed'),
     text = temp,
-    placeholder = 'Enter tags, seperated by commas',
+    placeholder = _('enter tags, seperated by commas'),
     editable = true
 }
 temp = dt.preferences.read(mod, 'active_current_preset_ind', 'integer')

contrib/exportLUT.lua

@@ -33,23 +33,30 @@ local ds = require("lib/dtutils.system")
 
 du.check_min_api_version("7.0.0", "exportLUT") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("exportLUT", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "exportLUT",
+  purpose = _("export a style as a LUT"),
+  author = "Noah Clarke",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/exportLUT"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-local gettext = dt.gettext
-
-gettext.bindtextdomain("exportLUT",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("exportLUT", msgid)
-end
-
 du.check_min_api_version("5.0.0", "exportLUT") 
 
 local eL = {}
@@ -64,13 +71,13 @@ local mkdir_command = 'mkdir -p '
 if dt.configuration.running_os == 'windows' then mkdir_command = 'mkdir ' end
 
 local file_chooser_button = dt.new_widget("file_chooser_button"){
-    title = _("Identity_file_chooser"),
+    title = _("identity_file_chooser"),
     value = "",
     is_directory = false
 }
 
 local export_chooser_button = dt.new_widget("file_chooser_button"){
-    title = _("Export_location_chooser"),
+    title = _("export_location_chooser"),
     value = "",
     is_directory = true
 }
@@ -106,9 +113,9 @@ end
 local function export_luts()
   local identity = dt.database.import(file_chooser_button.value)
   if(type(identity) ~= "userdata") then
-    dt.print(_("Invalid identity lut file"))
+    dt.print(_("invalid identity lut file"))
   else
-    local job = dt.gui.create_job(_('Exporting styles as haldCLUTs'), true, end_job)
+    local job = dt.gui.create_job(_('exporting styles as haldCLUTs'), true, end_job)
     
     local size = 1
 
@@ -127,9 +134,9 @@ local function export_luts()
       io_lut:write_image(identity, output_path(style.name, job))
       count = count + 1
       job.percent = count / size
-      dt.print(_("Exported: ") .. output_path(style.name, job))
+      dt.print(string.format(_("exported: %s"), output_path(style.name, job)))
     end
-    dt.print(_("Done exporting haldCLUTs"))
+    dt.print(_("done exporting haldCLUTs"))
     job.valid = false
     identity:reset()
   end

contrib/ext_editor.lua

@@ -75,10 +75,26 @@ local dtsys = require "lib/dtutils.system"
 local MODULE_NAME = "ext_editor"
 du.check_min_api_version("7.0.0", MODULE_NAME) 
 
+-- translation
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("ext_editor", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "ext_editor",
+  purpose = _("edit images with external editors"),
+  author = "Marco Carrarini, marco.carrarini@gmail.com",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/ext_editor"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -94,13 +110,6 @@ ee.event_registered = false
 ee.widgets = {}
 
 
--- translation
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
-local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
-end
-
 -- maximum number of external programs, can be increased to necessity
 local MAX_EDITORS = 9
 
@@ -156,7 +165,7 @@ local function UpdateProgramList(combobox, button_edit, button_edit_copy, update
       button_edit.sensitive = active
       button_edit_copy.sensitive = active
 
-  if update_button_pressed then dt.print(n_entries.._(" editors configured")) end
+  if update_button_pressed then dt.print(string.format(_("%d editors configured"), n_entries)) end
 end
 
 
@@ -223,17 +232,17 @@ local function OpenWith(images, choice, copy)
     -- physical copy, check result, return if error
     local copy_success = df.file_copy(name, new_name)
     if not copy_success then
-      dt.print(_("error copying file ")..name)
+      dt.print(string.format(_("error copying file %s"), name))
       return
     end    
   end
 
   -- launch the external editor, check result, return if error
   local run_cmd = bin.." "..df.sanitize_filename(new_name) 
-  dt.print(_("launching ")..friendly_name.."...") 
+  dt.print(string.format(_("launching %s..."), friendly_name))
   local result = dtsys.external_command(run_cmd)
   if result ~= 0 then
-    dt.print(_("error launching ")..friendly_name)
+    dt.print(string.format(_("error launching %s"), friendly_name))
     return
   end
 
@@ -326,7 +335,7 @@ local function export2collection(storage, image_table, extra_data)
     -- move image to collection folder, check result, return if error
     move_success = df.file_move(temp_name, new_name)
     if not move_success then
-      dt.print(_("error moving file ")..temp_name)
+      dt.print(string.format(_("error moving file %s"), temp_name))
       return
     end
 
@@ -378,7 +387,7 @@ end
 local function restart()
   for i = 1, MAX_EDITORS do
     dt.register_event(MODULE_NAME .. i, "shortcut", 
-      program_shortcut, _("edit with program ")..string.format("%02d", i)) 
+      program_shortcut, string.format(_("edit with program %02d"), i)) 
   end
   dt.register_storage("exp2coll", _("collection"), nil, export2collection)
   dt.gui.libs[MODULE_NAME].visible = true
@@ -476,11 +485,11 @@ dt.register_storage("exp2coll", _("collection"), nil, export2collection)
 -- register the new preferences -----------------------------------------------
 for i = MAX_EDITORS, 1, -1 do
   dt.preferences.register(MODULE_NAME, "program_path_"..i, "file", 
-  _("executable for external editor ")..i, 
-  _("select executable for external editor")  , _("(None)"))
+  string.format(_("executable for external editor %d"), i), 
+  _("select executable for external editor")  , _("(none)"))
   
   dt.preferences.register(MODULE_NAME, "program_name_"..i, "string", 
-  _("name of external editor ")..i, 
+  string.format(_("name of external editor %d"), i), 
   _("friendly name of external editor"), "")
 end
 dt.preferences.register(MODULE_NAME, "show_in_darkrooom", "bool", 
@@ -491,7 +500,7 @@ dt.preferences.register(MODULE_NAME, "show_in_darkrooom", "bool",
 -- register the new shortcuts -------------------------------------------------
 for i = 1, MAX_EDITORS do
   dt.register_event(MODULE_NAME .. i, "shortcut", 
-    program_shortcut, _("edit with program ")..string.format("%02d", i)) 
+    program_shortcut, string.format(_("edit with program %02d"), i)) 
 end
 
 

contrib/face_recognition.lua

@@ -44,7 +44,7 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dtsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 -- constants
 
@@ -54,10 +54,23 @@ local OUTPUT = dt.configuration.tmp_dir .. PS .. "facerecognition.txt"
 
 du.check_min_api_version("7.0.0", MODULE) 
 
+dt.gettext.bindtextdomain("face_recognition", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "face_recognition",
+  purpose = _("use facial recognition to tag images"),
+  author = "Sebastian Witt",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/face_recognition"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -69,13 +82,6 @@ local fc = {}
 fc.module_installed = false
 fc.event_registered = false
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("face_recognition", dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("face_recognition", msgid)
-end
-
 local function build_image_table(images)
   local image_table = {}
   local file_extension = ""
@@ -135,7 +141,7 @@ local function do_export(img_tbl, images)
   job.percent = 0.0
   for export,img in pairs(img_tbl) do
     exp_cnt = exp_cnt + 1
-    dt.print(string.format(_("Exporting image %i of %i images"), exp_cnt, images))
+    dt.print(string.format(_("exporting image %i of %i images"), exp_cnt, images))
     exporter:write_image(img, export, upsize)
     job.percent = job.percent + percent_step
   end
@@ -205,7 +211,7 @@ local function face_recognition ()
   local bin_path = df.check_if_bin_exists("face_recognition")
 
   if not bin_path then
-    dt.print(_("Face recognition not found"))
+    dt.print(_("face recognition not found"))
     return
   end
 
@@ -257,7 +263,7 @@ local function face_recognition ()
       local command = bin_path ..  " --cpus " .. nrCores .. " --tolerance " .. tolerance .. " " .. knownPath .. " " .. path .. " > " .. OUTPUT
       os.setlocale()
       dt.print_log("Face recognition: Running command: " .. command)
-      dt.print(_("Starting face recognition..."))
+      dt.print(_("starting face recognition..."))
 
       dtsys.external_command(command)
 
@@ -265,9 +271,9 @@ local function face_recognition ()
       local f = io.open(OUTPUT, "rb")
 
       if not f then
-        dt.print(_("Face recognition failed"))
+        dt.print(_("face recognition failed"))
       else
-        dt.print(_("Face recognition finished"))
+        dt.print(_("face recognition finished"))
         f:close ()
       end
 
@@ -399,7 +405,7 @@ fc.category_tags = dt.new_widget("entry"){
 
 fc.tolerance = dt.new_widget("slider"){
   label = _("tolerance"),
-  tooltip = ("detection tolerance - 0.6 default - lower if too many faces detected"),
+  tooltip = _("detection tolerance - 0.6 default - lower if too many faces detected"),
   soft_min = 0.0,
   hard_min = 0.0,
   soft_max = 1.0,
@@ -482,12 +488,12 @@ table.insert(widgets, fc.num_cores)
 table.insert(widgets, fc.export_format)
 table.insert(widgets, dt.new_widget("box"){
   orientation = "horizontal",
-  dt.new_widget("label"){ label = _("width  ")},
+  dt.new_widget("label"){ label = _("width")},
   fc.width,
 })
 table.insert(widgets, dt.new_widget("box"){
   orientation = "horizontal",
-  dt.new_widget("label"){ label = _("height ")},
+  dt.new_widget("label"){ label = _("height")},
   fc.height,
 })
 table.insert(widgets, fc.execute)

contrib/fujifilm_dynamic_range.lua

@@ -60,13 +60,28 @@ cameras may behave in other ways.
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
+local dtsys = require "lib/dtutils.system"
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "fujifilm_dynamic_range") 
 
+dt.gettext.bindtextdomain("fujifilm_dynamic_range", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "fujifilm_dynamic_range",
+  purpose = _("compensate for Fujifilm raw files made using \"dynamic range\""),
+  author = "Dan Torop <dant@pnym.net>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/fujifilm_dynamic_range"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -111,6 +126,17 @@ local function detect_dynamic_range(event, image)
 	-- note that scene-referred workflow exposure preset also pushes exposure up by 0.5 EV
 	image.exif_exposure_bias = image.exif_exposure_bias + tonumber(raf_result)
 	dt.print_log("[fujifilm_dynamic_range] raw exposure bias " .. tostring(raf_result))
+	-- handle any duplicates
+	if #image:get_group_members() > 1 then
+		local basename = df.get_basename(image.filename)
+		local grouped_images = image:get_group_members()
+		for _, img in ipairs(grouped_images) do
+			if string.match(img.filename, basename) and img.duplicate_index > 0 then
+				-- its a duplicate
+				img.exif_exposure_bias = img.exif_exposure_bias + tonumber(raf_result)
+			end
+		end
+	end
 end
 
 local function destroy()

contrib/fujifilm_ratings.lua

@@ -26,26 +26,37 @@ Dependencies:
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-local gettext = dt.gettext
+local dtsys = require "lib/dtutils.system"
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "fujifilm_ratings") 
 
+dt.gettext.bindtextdomain("fujifilm_ratings", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+	return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "fujifilm_ratings",
+  purpose = _("import Fujifilm in-camera ratings"),
+  author = "Ben Mendis <ben.mendis@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/fujifilm_ratings"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
-gettext.bindtextdomain("fujifilm_ratings", dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-	return gettext.dgettext("fujifilm_ratings", msgid)
-end
-
 local function detect_rating(event, image)
+	if not string.match(image.filename, "%.RAF$") and not string.match(image.filename, "%.raf$") then
+		return
+	end
 	if not df.check_if_bin_exists("exiftool") then
 		dt.print_error(_("exiftool not found"))
 		return
@@ -53,25 +64,25 @@ local function detect_rating(event, image)
 	local RAF_filename = df.sanitize_filename(tostring(image))
 	local JPEG_filename = string.gsub(RAF_filename, "%.RAF$", ".JPG")
 	local command = "exiftool -Rating " .. JPEG_filename
-	dt.print_error(command)
+	dt.print_log(command)
 	local output = io.popen(command)
 	local jpeg_result = output:read("*all")
 	output:close()
 	if string.len(jpeg_result) > 0 then
 		jpeg_result = string.gsub(jpeg_result, "^Rating.*(%d)", "%1")
 		image.rating = tonumber(jpeg_result)
-		dt.print_error(_("Using JPEG Rating: ") .. tostring(jpeg_result))
+		dt.print_log("using JPEG rating: " .. jpeg_result)
 		return
 	end
 	command = "exiftool -Rating " .. RAF_filename
-	dt.print_error(command)
+	dt.print_log(command)
 	output = io.popen(command)
 	local raf_result = output:read("*all")
 	output:close()
 	if string.len(raf_result) > 0 then
 		raf_result = string.gsub(raf_result, "^Rating.*(%d)", "%1")
 		image.rating = tonumber(raf_result)
-		dt.print_error(_("Using RAF Rating: ") .. tostring(raf_result))
+		dt.print_log("using RAF rating: " .. raf_result)
 	end
 end
 

contrib/geoJSON_export.lua

@@ -35,26 +35,33 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-local gettext = dt.gettext
+local dtsys = require "lib/dtutils.system"
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "geoJSON_export") 
 
+dt.gettext.bindtextdomain("geoJSON_export", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "geoJSON_export",
+  purpose = _("export a geoJSON file from geo data"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/geoJSON_export"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("geoJSON_export",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("geoJSON_export", msgid)
-end
-
 -- Sort a table
 local function spairs(_table, order) -- Code copied from http://stackoverflow.com/questions/15706270/sort-a-table-in-lua
     -- collect the keys
@@ -80,7 +87,7 @@ local function spairs(_table, order) -- Code copied from http://stackoverflow.co
 end
 
 local function show_status(storage, image, format, filename, number, total, high_quality, extra_data)
-    dt.print(string.format(_("Export Image %i/%i"), number, total))
+    dt.print(string.format(_("export image %i/%i"), number, total))
 end
 
 local function create_geoJSON_file(storage, image_table, extra_data)
@@ -309,19 +316,19 @@ dt.preferences.register("geoJSON_export",
 	"CreateMapBoxHTMLFile",
 	"bool",
 	_("geoJSON export: Create an additional HTML file"),
-	_("Creates a HTML file, that loads the geoJASON file. (Needs a MapBox key"),
+	_("creates an HTML file that loads the geoJSON file. (needs a MapBox key"),
 	false )
 dt.preferences.register("geoJSON_export",
 	"mapBoxKey",
 	"string",
-	_("geoJSON export: MapBox Key"),
-	_("https://www.mapbox.com/studio/account/tokens"),
+	_("geoJSON export: MapBox key"),
+	"https://www.mapbox.com/studio/account/tokens",
 	'' )
 dt.preferences.register("geoJSON_export",
 	"OpengeoJSONFile",
 	"bool",
-	_("geoJSON export: Open geoJSON file after export"),
-	_("Opens the geoJSON file after the export with the standard program for geoJSON files"),
+	_("geoJSON export: open geoJSON file after export"),
+	_("opens the geoJSON file after the export with the standard program for geoJSON files"),
 	false )
 
 local handle = io.popen("xdg-user-dir DESKTOP")
@@ -333,8 +340,8 @@ end
 dt.preferences.register("geoJSON_export",
 	"ExportDirectory",
 	"directory",
-	_("geoJSON export: Export directory"),
-	_("A directory that will be used to export the geoJSON files"),
+	_("geoJSON export: export directory"),
+	_("a directory that will be used to export the geoJSON files"),
 	result )
 
 -- Register

contrib/geoToolbox.lua

@@ -28,26 +28,33 @@ require "geoToolbox"
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-local gettext = dt.gettext
+local dtsys = require "lib/dtutils.system"
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "geoToolbox") 
 
+dt.gettext.bindtextdomain("geoToolbox", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "geoToolbox",
+  purpose = _("geodata tools"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/geoToolbox"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("geoToolbox",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("geoToolbox", msgid)
-end
-
 
 local gT = {}
 gT.module_installed = false
@@ -56,7 +63,7 @@ gT.event_registered = false
 
 -- <GUI>
 local labelDistance = dt.new_widget("label")
-labelDistance.label = _("Distance:")
+labelDistance.label = _("distance:")
 
 local label_copy_gps_lat = dt.new_widget("check_button")
 {
@@ -300,9 +307,9 @@ local function copy_gps()
       end
     end
 
-    label_copy_gps_lat.label = _("latitude: ") .. copy_gps_latitude
-    label_copy_gps_lon.label = _("longitude: ") ..copy_gps_longitude
-    label_copy_gps_ele.label = _("elevation: ") .. copy_gps_elevation
+    label_copy_gps_lat.label = string.format(_("latitude: "), copy_gps_latitude)
+    label_copy_gps_lon.label = string.format(_("longitude: "),copy_gps_longitude)
+    label_copy_gps_ele.label = string.format(_("elevation: "), copy_gps_elevation)
 
     return
   end
@@ -488,12 +495,12 @@ local function calc_distance()
 
     if (distance < 1) then
         distance = distance * 1000
-        distanceUnit = _("m")
+        distanceUnit = "m"
     else
-        distanceUnit = _("km")
+        distanceUnit = "km"
     end
 
-    return string.format(_("Distance: %.2f %s"), distance, distanceUnit)
+    return string.format(_("distance: %.2f %s"), distance, distanceUnit)
 end
 
 local function print_calc_distance()
@@ -516,12 +523,12 @@ local altitude_filename = dt.new_widget("entry")
     text = "altitude.csv",
     placeholder = "altitude.csv",
     editable = true,
-    tooltip = _("Name of the exported file"),
+    tooltip = _("name of the exported file"),
     reset_callback = function(self) self.text = "text" end
   }
 
 local function altitude_profile()
-	  dt.print(_("Start export"))
+	  dt.print(_("start export"))
     local sel_images = dt.gui.action_images
 
     local lat1 = 0;
@@ -582,7 +589,7 @@ local function altitude_profile()
     file = io.open(exportDirectory.."/"..exportFilename, "w")
     file:write(csv_file)
     file:close()
-    dt.print(_("File created in ")..exportDirectory)
+    dt.print(string.format(_("file created in %s"), exportDirectory))
 
 end
 
@@ -612,14 +619,14 @@ end
 
 local function restart()
   dt.register_event("geoToolbox_cd", "shortcut", 
-    print_calc_distance, _("Calculate the distance from latitude and longitude in km"))
+    print_calc_distance, _("calculate the distance from latitude and longitude in km"))
   dt.register_event("geoToolbox", "mouse-over-image-changed", 
     toolbox_calc_distance)
 
   dt.register_event("geoToolbox_wg", "shortcut", 
-    select_with_gps, _("Select all images with GPS information"))
+    select_with_gps, _("select all images with GPS information"))
   dt.register_event("geoToolbox_ng", "shortcut", 
-    select_without_gps, _("Select all images without GPS information"))
+    select_without_gps, _("select all images without GPS information"))
 
   dt.gui.libs["geoToolbox"].visible = true
 end
@@ -642,20 +649,20 @@ gT.widget = dt.new_widget("box")
     dt.new_widget("button")
     {
       label = _("select geo images"),
-      tooltip = _("Select all images with GPS information"),
+      tooltip = _("select all images with GPS information"),
       clicked_callback = select_with_gps
     },
     dt.new_widget("button")
     {
       label = _("select non-geo images"),
-      tooltip = _("Select all images without GPS information"),
+      tooltip = _("select all images without GPS information"),
       clicked_callback = select_without_gps
     },
     separator,--------------------------------------------------------
     dt.new_widget("button")
     {
       label = _("copy GPS data"),
-      tooltip = _("Copy GPS data"),
+      tooltip = _("copy GPS data"),
       clicked_callback = copy_gps
     },
     label_copy_gps_lat,
@@ -664,7 +671,7 @@ gT.widget = dt.new_widget("box")
     dt.new_widget("button")
     {
       label = _("paste GPS data"),
-      tooltip = _("Paste GPS data"),
+      tooltip = _("paste GPS data"),
       clicked_callback = paste_gps
     },
     separator2,--------------------------------------------------------
@@ -694,14 +701,14 @@ gT.widget = dt.new_widget("box")
     dt.new_widget("button")
     {
       label = _("open in Gnome Maps"),
-      tooltip = _("Open location in Gnome Maps"),
+      tooltip = _("open location in Gnome Maps"),
       clicked_callback = open_location_in_gnome_maps
     },
     separator4,--------------------------------------------------------
     dt.new_widget("button")
     {
       label = _("reverse geocode"),
-      tooltip = _("This just shows the name of the location, but doesn't add it as tag"),
+      tooltip = _("this just shows the name of the location, but doesn't add it as tag"),
       clicked_callback = reverse_geocode
     },
     separator5,--------------------------------------------------------
@@ -711,7 +718,7 @@ gT.widget = dt.new_widget("box")
     dt.new_widget("button")
     {
       label = _("export altitude CSV file"),
-      tooltip = _("Create an altitude profile using the GPS data in the metadata"),
+      tooltip = _("create an altitude profile using the GPS data in the metadata"),
       clicked_callback = altitude_profile
     },
     labelDistance
@@ -739,19 +746,19 @@ dt.preferences.register("geoToolbox",
 	"mapBoxKey",
 	"string",
 	_("geoToolbox export: MapBox Key"),
-	_("https://www.mapbox.com/studio/account/tokens"),
+	"https://www.mapbox.com/studio/account/tokens",
 	'' )
 
 -- Register
 dt.register_event("geoToolbox_cd", "shortcut", 
-  print_calc_distance, _("Calculate the distance from latitude and longitude in km"))
+  print_calc_distance, _("calculate the distance from latitude and longitude in km"))
 dt.register_event("geoToolbox", "mouse-over-image-changed", 
   toolbox_calc_distance)
 
 dt.register_event("geoToolbox_wg", "shortcut", 
-  select_with_gps, _("Select all images with GPS information"))
+  select_with_gps, _("select all images with GPS information"))
 dt.register_event("geoToolbox_ng", "shortcut", 
-  select_without_gps, _("Select all images without GPS information"))
+  select_without_gps, _("select all images without GPS information"))
 
 script_data.destroy = destroy
 script_data.restart = restart

contrib/gimp.lua

@@ -69,27 +69,33 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dtsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 local gimp_widget = nil
 
 du.check_min_api_version("7.0.0", "gimp") 
 
+dt.gettext.bindtextdomain("gimp", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "gimp",
+  purpose = _("export and edit with GIMP"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/gimp"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("gimp",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("gimp", msgid)
-end
-
 local function group_if_not_member(img, new_img)
   local image_table = img:get_group_members()
   local is_member = false
@@ -109,7 +115,7 @@ end
 
 local function show_status(storage, image, format, filename,
   number, total, high_quality, extra_data)
-    dt.print(string.format(_("Export Image %i/%i"), number, total))
+    dt.print(string.format(_("export image %i/%i"), number, total))
 end
 
 local function gimp_edit(storage, image_table, extra_data) --finalize
@@ -119,7 +125,7 @@ local function gimp_edit(storage, image_table, extra_data) --finalize
   local gimp_executable = df.check_if_bin_exists("gimp")
 
   if not gimp_executable then
-    dt.print_error(_("GIMP not found"))
+    dt.print_error("GIMP not found")
     return
   end
 
@@ -142,7 +148,7 @@ local function gimp_edit(storage, image_table, extra_data) --finalize
     img_list = img_list ..exp_img.. " "
   end
 
-  dt.print(_("Launching GIMP..."))
+  dt.print(_("launching GIMP..."))
 
   local gimpStartCommand
   gimpStartCommand = gimp_executable .. " " .. img_list
@@ -213,7 +219,7 @@ gimp_widget = dt.new_widget("check_button"){
   end
 }
 
-dt.register_storage("module_gimp", _("Edit with GIMP"), show_status, gimp_edit, nil, nil, gimp_widget)
+dt.register_storage("module_gimp", _("edit with GIMP"), show_status, gimp_edit, nil, nil, gimp_widget)
 
 --
 script_data.destroy = destroy

contrib/gpx_export.lua

@@ -29,22 +29,28 @@ local gettext = dt.gettext
 
 dl.check_min_api_version("7.0.0", "gpx_export") 
 
+gettext.bindtextdomain("gpx_export", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext.dgettext("gpx_export", msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "gpx_export",
+  purpose = _("export gpx information to a file"),
+  author = "Jannis_V",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/gpx_export"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("gpx_export",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("gpx_export", msgid)
-end
-
 local gpx = {}
 gpx.module_installed = false
 gpx.event_registered = false
@@ -132,11 +138,11 @@ local function create_gpx_file()
 
   local file = io.open(path, "w")
   if (file == nil) then
-    dt.print(_("invalid path: ")..path)
+    dt.print(string.format(_("invalid path: %s"), path))
   else
     file:write(gpx_file)
     file:close()
-    dt.print(_("gpx file created: ")..path)
+    dt.print(string.format(_("gpx file created: "), path))
   end
 end
 

contrib/harmonic_armature_guide.lua

@@ -32,17 +32,30 @@ USAGE
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("2.0.0", "harmonic_armature_guide") 
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("harmonic_armature_guide",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("harmonic_armature_guide", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-  return gettext.dgettext("harmonic_armature_guide", msgid)
+  return gettext(msgid)
 end
 
+local script_data = {}
+
+script_data.metadata = {
+  name = "harmonic_armature_guide",
+  purpose = _("harmonic artmature guide"),
+  author = "Hubert Kowalski",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/harmonic_armature_guide"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 dt.guides.register_guide("harmonic armature",
 -- draw
 function(cairo, x, y, width, height, zoom_scale)
@@ -76,3 +89,11 @@ function()
   return dt.new_widget("label"){label = _("harmonic armature"), halign = "start"}
 end
 )
+
+local function destroy()
+  -- nothing to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data

contrib/hif_group_leader.lua

@@ -58,30 +58,36 @@ local MODULE = "hif_group_leader"
 du.check_min_api_version("7.0.0", MODULE) 
 
 
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- I 1 8 N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("hif_group_leader", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 -- S C R I P T  M A N A G E R  I N T E G R A T I O N
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "hif_group_leader",
+  purpose = _("make hif image group leader"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/hif_group_leader"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- - - - - - - - - - - - - - - - - - - - - - - - - -
--- I 1 8 N
--- - - - - - - - - - - - - - - - - - - - - - - - - -
-
-local gettext = dt.gettext
-
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain(MODULE, dt.configuration.config_dir .. "/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext(MODULE, msgid)
-end
-
 
 -- - - - - - - - - - - - - - - - - - - - - - - - 
 -- P R E F E R E N C E S
@@ -182,7 +188,7 @@ dt.register_event(MODULE .. "_collect", "shortcut",
     local images = dt.collection
     make_existing_hif_group_leader(images)
   end,
-  _("Make hif group leader for collection")
+  _("make hif group leader for collection")
 )
 
 dt.register_event(MODULE .. "_select", "shortcut",
@@ -190,7 +196,7 @@ dt.register_event(MODULE .. "_select", "shortcut",
     local images = dt.gui.selection()
     make_existing_hif_group_leader(images)
   end,
-  _("Make hif group leader for selection")
+  _("make hif group leader for selection")
 )
 
 return script_data

contrib/hugin.lua

@@ -40,7 +40,7 @@ local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local log = require "lib/dtutils.log"
 local dtsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 local namespace = 'module_hugin'
 local user_pref_str = 'prefer_gui'
@@ -56,22 +56,28 @@ local PQ = dt.configuration.running_os == "windows" and '"' or "'"
 -- works with darktable API version from 5.0.0 on
 du.check_min_api_version("7.0.0", "hugin") 
 
+dt.gettext.bindtextdomain("hugin", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "hugin",
+  purpose = _("stitch images into a panorama"),
+  author = "Wolfgang Goetz",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/hugin"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("hugin",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("hugin", msgid)
-end
-
 local function user_preference_changed(widget)
   user_prefer_gui = widget.value
   dt.preferences.write(namespace, user_pref_str, "bool", user_prefer_gui)
@@ -201,7 +207,7 @@ local function create_panorama(storage, image_table, extra_data) --finalize
       if df.check_if_file_exists(src_path) then
         log.msg(log.debug, "found ", src_path, " importing to ", dst_path)
         df.file_move(src_path, dst_path)
-        dt.print(_("importing file "..dst_path))
+        dt.print(string.format(_("importing file %s"), dst_path))
         dt.database.import(dst_path)
       end
     end
@@ -227,7 +233,7 @@ hugin_widget = dt.new_widget("box") {
   orientation = "vertical",
   dt.new_widget("check_button")
   {
-    label = _("  launch hugin gui"),
+    label = _("launch hugin gui"),
     value = user_prefer_gui,
     tooltip = _('launch hugin in gui mode'),
     clicked_callback = user_preference_changed

contrib/image_stack.lua

@@ -64,7 +64,7 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dtsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 local job = nil
 
 -- path separator constant
@@ -73,22 +73,28 @@ local PS = dt.configuration.running_os == "windows" and "\\" or "/"
 -- works with LUA API version 5.0.0
 du.check_min_api_version("7.0.0", "image_stack") 
 
+dt.gettext.bindtextdomain("image_stack", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "image_stack",
+  purpose = _("process a stack of images"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/image_stack"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("image_stack",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("image_stack", msgid)
-end
-
 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 --  GUI definitions
 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
@@ -259,7 +265,7 @@ end
 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 
 local function show_status(storage, image, format, filename, number, total, high_quality, extra_data)
-    dt.print(string.format(_("Export Image %i/%i"), number, total))
+    dt.print(string.format(_("export image %i/%i"), number, total))
 end
 
 -- read the gui and populate the align_image_stack arguments
@@ -452,7 +458,7 @@ local function copy_image_attributes(from, to, ...)
       to.rights = from.rights
       to.description = from.description
     else
-      dt.print_error(_("Unrecognized option to copy_image_attributes: " .. arg))
+      dt.print_error("Unrecognized option to copy_image_attributes: " .. arg)
     end
   end
 end
@@ -496,7 +502,7 @@ local function image_stack(storage, image_table, extra_data)
 
   if image_count < 2 then
     dt.print(_("ERROR: at least 2 images required for image stacking, exiting..."))
-    dt.print_error(_(image_count .. " image(s) selected, at least 2 required"))
+    dt.print_error(image_count .. " image(s) selected, at least 2 required")
     return
   end
 
@@ -520,13 +526,13 @@ local function image_stack(storage, image_table, extra_data)
         job.percent = job.percent + percent_step
       else
         dt.print(_("ERROR: image alignment failed"))
-        dt.print_error(_("image alignment failed"))
+        dt.print_error("image alignment failed")
         cleanup(img_list)
         return
       end
     else
       dt.print(_("ERROR: align_image_stack not found"))
-      dt.print_error(_("align_image_stack not found"))
+      dt.print_error("align_image_stack not found")
       cleanup(img_list)
       return
     end
@@ -540,7 +546,7 @@ local function image_stack(storage, image_table, extra_data)
   local ignore_tif_tags = " -quiet -define tiff:ignore-tags=40965,42032,42033,42034,42036,18246,18249,36867,34864,34866 "
   if convert_executable then
     local convert_command = convert_executable .. ignore_tif_tags .. convert_arguments
-    dt.print_log(_("convert command is " .. convert_command))
+    dt.print_log("convert command is " .. convert_command)
     dt.print(_("processing image stack"))
     local result = dtsys.external_command(convert_command)
     if result == 0 then
@@ -554,7 +560,7 @@ local function image_stack(storage, image_table, extra_data)
       local import_filename = df.create_unique_filename(film_roll_path .. PS .. df.get_filename(output_filename))
       df.file_move(output_filename, import_filename)
       imported_image = dt.database.import(import_filename)
-      local created_tag = dt.tags.create(_("Created with|image_stack"))
+      local created_tag = dt.tags.create(_("created with|image_stack"))
       dt.tags.attach(created_tag, imported_image)
       -- all the images are the same except for time, so just copy the  attributes
       -- from the first
@@ -568,7 +574,7 @@ local function image_stack(storage, image_table, extra_data)
 
       if tag_source then
         dt.print(_("tagging source images"))
-        local source_tag = dt.tags.create(_("Source file|" .. imported_image.filename))
+        local source_tag = dt.tags.create(_("source file|" .. imported_image.filename))
         for img, _ in pairs(image_table) do 
           dt.tags.attach(source_tag, img)
         end
@@ -580,7 +586,7 @@ local function image_stack(storage, image_table, extra_data)
     end
   else
     dt.print(_("ERROR: convert executable not found"))
-    dt.print_error(_("convert executable not found"))
+    dt.print_error("convert executable not found")
     cleanup(img_list)
   end
   job.valid = false
@@ -592,7 +598,7 @@ end
 
 dt.preferences.register("align_image_stack", "align_use_gpu", -- name
   "bool",                                                     -- type
-  _('align image stack: use GPU for remaping'),               -- label
+  _('align image stack: use GPU for remapping'),               -- label
   _('set the GPU remapping for image align'),                 -- tooltip
   false)
 

contrib/image_time.lua

@@ -107,7 +107,8 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local ds = require "lib/dtutils.string"
-local gettext = dt.gettext
+local dtsys = require "lib/dtutils.system"
+local gettext = dt.gettext.gettext
 
 local img_time = {}
 img_time.module_installed = false
@@ -115,22 +116,29 @@ img_time.event_registered = false
 
 du.check_min_api_version("7.0.0", "image_time") 
 
+dt.gettext.bindtextdomain("image_time", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "image_time",
+  purpose = _("synchronize image time for images shot with different cameras or adjust or set image time"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/image_time"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("image_time",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("image_time", msgid)
-end
 
 local PS = dt.configuration.runnin_os == "windows" and "\\" or "/"
 local ERROR = -1
@@ -175,7 +183,7 @@ local function calculate_difference(images)
     img_time.diff_entry.text = calc_time_difference(images[1], images[2])
     img_time.btn.sensitive = true
   else
-    dt.print(_("Error: 2 images must be selected"))
+    dt.print(_("ERROR: 2 images must be selected"))
   end
 end
 
@@ -249,7 +257,7 @@ local function _get_windows_image_file_creation_time(image)
     end
     p:close()
   else
-    dt.print(_("unable to get information for  ") .. image.filename)
+    dt.print(string.format(_("unable to get information for %s"), image.filename))
     datetime = ERROR
   end
   return datetime
@@ -266,7 +274,7 @@ local function _get_nix_image_file_creation_time(image)
     end
     p:close()
   else
-    dt.print(_("unable to get information for  ") .. image.filename)
+    dt.print(string.format(_("unable to get information for %s"), image.filename))
     datetime = ERROR
   end
   return datetime
@@ -314,7 +322,7 @@ local function reset_time(images)
       image.exif_datetime_taken = get_original_image_time(image)
     end
   else
-    dt.print_error(_("reset time: no images selected"))
+    dt.print_error("reset time: no images selected")
     dt.print(_("please select the images that need their time reset"))
   end
 end
@@ -430,8 +438,8 @@ end
 img_time.widgets  = {
   -- name, type, tooltip, placeholder,
   {"ayr", "combobox", _("years"), _("years to adjust by, 0 - ?"), {seq(0,20)}, 1},
-  {"amo", "combobox", _("months"), ("months to adjust by, 0-12"), {seq(0,12)}, 1},
-  {"ady", "combobox", _("days"), ("days to adjust by, 0-31"), {seq(0,31)}, 1},
+  {"amo", "combobox", _("months"), _("months to adjust by, 0-12"), {seq(0,12)}, 1},
+  {"ady", "combobox", _("days"), _("days to adjust by, 0-31"), {seq(0,31)}, 1},
   {"ahr", "combobox", _("hours"), _("hours to adjust by, 0-23"), {seq(0,23)}, 1},
   {"amn", "combobox", _("minutes"), _("minutes to adjust by, 0-59"), {seq(0,59)}, 1},
   {"asc", "combobox", _("seconds"), _("seconds to adjust by, 0-59"), {seq(0,59)}, 1},
@@ -457,13 +465,13 @@ end
 img_time.syr.selected = #img_time.syr
 
 img_time.diff_entry = dt.new_widget("entry"){
-  tooltip = _("Time difference between images in seconds"),
-  placeholder = _("Select 2 images and use the calculate button"),
+  tooltip = _("time difference between images in seconds"),
+  placeholder = _("select 2 images and use the calculate button"),
   text = "",
 }
 
 img_time.calc_btn = dt.new_widget("button"){
-  label = _("Calculate"),
+  label = _("calculate"),
   tooltip = _("calculate time difference between 2 images"),
   clicked_callback = function()
     calculate_difference(dt.gui.action_images)

contrib/jpg_group_leader.lua

@@ -58,30 +58,36 @@ local MODULE = "jpg_group_leader"
 du.check_min_api_version("7.0.0", MODULE) 
 
 
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+-- I 1 8 N
+-- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("jpg_group_leader", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 -- S C R I P T  M A N A G E R  I N T E G R A T I O N
 -- - - - - - - - - - - - - - - - - - - - - - - - - -
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "jpg_group_leader",
+  purpose = _("make jpg image group leader"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/jpg_group_leader"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- - - - - - - - - - - - - - - - - - - - - - - - - -
--- I 1 8 N
--- - - - - - - - - - - - - - - - - - - - - - - - - -
-
-local gettext = dt.gettext
-
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain(MODULE, dt.configuration.config_dir .. "/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext(MODULE, msgid)
-end
-
 
 -- - - - - - - - - - - - - - - - - - - - - - - - 
 -- P R E F E R E N C E S
@@ -182,7 +188,7 @@ dt.register_event(MODULE .. "_collect", "shortcut",
     local images = dt.collection
     make_existing_jpg_group_leader(images)
   end,
-  _("Make jpg group leader for collection")
+  _("make jpg group leader for collection")
 )
 
 dt.register_event(MODULE .. "_select", "shortcut",
@@ -190,7 +196,7 @@ dt.register_event(MODULE .. "_select", "shortcut",
     local images = dt.gui.selection()
     make_existing_jpg_group_leader(images)
   end,
-  _("Make jpg group leader for selection")
+  _("make jpg group leader for selection")
 )
 
 return script_data

contrib/kml_export.lua

@@ -39,30 +39,36 @@ local df = require "lib/dtutils.file"
 local ds = require "lib/dtutils.string"
 local dsys = require "lib/dtutils.system"
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 local PS = dt.configuration.running_os == "windows" and "\\" or "/"
 
 du.check_min_api_version("7.0.0", "kml_export") 
 
+dt.gettext.bindtextdomain("kml_export", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "kml_export",
+  purpose = _("export KML/KMZ data to a file"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/kml_export"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("kml_export",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("kml_export", msgid)
-end
-
 local function show_status(storage, image, format, filename, number, total, high_quality, extra_data)
-  dt.print(string.format(_("Export Image %i/%i"), number, total))
+  dt.print(string.format(_("export image %i/%i"), number, total))
 end
 
 -- Add duplicate index to filename
@@ -320,14 +326,14 @@ if dt.configuration.running_os == "windows" then
     "OpenKmlFile",
     "bool",
     _("KML export: Open KML file after export"),
-    _("Opens the KML file after the export with the standard program for KML files"),
+    _("opens the KML file after the export with the standard program for KML files"),
     false )
 else
   dt.preferences.register("kml_export",
     "OpenKmlFile",
     "bool",
-    _("KML export: Open KML/KMZ file after export"),
-    _("Opens the KML file after the export with the standard program for KML files"),
+    _("KML export: open KML/KMZ file after export"),
+    _("opens the KML file after the export with the standard program for KML files"),
     false )
 end
 
@@ -346,23 +352,23 @@ end
 dt.preferences.register("kml_export",
   "ExportDirectory",
   "directory",
-  _("KML export: Export directory"),
-  _("A directory that will be used to export the KML/KMZ files"),
+  _("KML export: export directory"),
+  _("a directory that will be used to export the KML/KMZ files"),
   defaultDir )
 
 if dt.configuration.running_os ~= "linux" then  
   dt.preferences.register("kml_export", 
     "magickPath",	-- name
 	"file",	-- type
-	_("KML export: ImageMagick binary Location"),	-- label
-	_("Install location of magick[.exe]. Requires restart to take effect."),	-- tooltip
+	_("KML export: ImageMagick binary location"),	-- label
+	_("install location of magick[.exe], requires restart to take effect"),	-- tooltip
 	"magick")	-- default
 end  
   
 dt.preferences.register("kml_export",
   "CreatePath",
   "bool",
-  _("KML export: Connect images with path"),
+  _("KML export: connect images with path"),
   _("connect all images with a path"),
   false )
 
@@ -370,16 +376,16 @@ if dt.configuration.running_os == "linux" then
   dt.preferences.register("kml_export",
     "CreateKMZ",
     "bool",
-    _("KML export: Create KMZ file"),
-    _("Compress all imeges to one KMZ file"),
+    _("KML export: create KMZ file"),
+    _("compress all imeges to one KMZ file"),
     true )
 end
 
 -- Register
 if dt.configuration.running_os == "windows" then
-  dt.register_storage("kml_export", _("KML Export"), nil, create_kml_file)
+  dt.register_storage("kml_export", _("KML export"), nil, create_kml_file)
 else
-  dt.register_storage("kml_export", _("KML/KMZ Export"), nil, create_kml_file)
+  dt.register_storage("kml_export", _("KML/KMZ export"), nil, create_kml_file)
 end
 
 script_data.destroy = destroy

contrib/passport_guide.lua

@@ -37,17 +37,30 @@ USAGE
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("2.0.0", "passport_guide") 
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("passport_guide",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("passport_guide", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-  return gettext.dgettext("passport_guide", msgid)
+  return gettext(msgid)
 end
 
+local script_data = {}
+
+script_data.metadata = {
+  name = "passport_guide",
+  purpose = _("guides for cropping passport photos"),
+  author = "Kåre Hampf",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/passport_guide"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 dt.guides.register_guide("passport",
 -- draw
 function(cairo, x, y, width, height, zoom_scale)
@@ -91,5 +104,13 @@ function()
 end
 )
 
+local function destroy()
+  -- nothing to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data
+
 -- kate: tab-indents: off; indent-width 2; replace-tabs on; remove-trailing-space on; hl Lua;
 -- vim: shiftwidth=2 expandtab tabstop=2 cindent syntax=lua

contrib/passport_guide_germany.lua

@@ -45,12 +45,26 @@ local gettext = dt.gettext
 du.check_min_api_version("2.0.0", "passport_guide_germany") 
 
 -- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("passport_guide_germany",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("passport_guide_germany",dt.configuration.config_dir.."/lua/locale/")
 
 local function _(msgid)
   return gettext.dgettext("passport_guide_germany", msgid)
 end
 
+local script_data = {}
+
+script_data.metadata = {
+  name = "passport_guide_germany",
+  purpose = _("guides for cropping passport and ID card (\"Personalausweis\") photos based on the \"Passbild-Schablone\" from the German Federal Ministry of the Interior and Community"),
+  author = "menschmachine",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/passport_guide_germany"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 dt.guides.register_guide("Passport Photo Germany",
 -- draw
 function(cairo, x, y, width, height, zoom_scale)
@@ -101,5 +115,13 @@ function()
 end
 )
 
+local function destroy()
+  -- noting to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data
+
 -- kate: tab-indents: off; indent-width 2; replace-tabs on; remove-trailing-space on; hl Lua;
 -- vim: shiftwidth=2 expandtab tabstop=2 cindent syntax=lua

contrib/pdf_slideshow.lua

@@ -42,17 +42,16 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("pdf_slideshow",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("pdf_slideshow", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-    return gettext.dgettext("pdf_slideshow", msgid)
+    return gettext(msgid)
 end
 
 if not df.check_if_bin_exists("pdflatex") then
-   dt.print_error(_("pdflatex not found"))
+   dt.print_error("pdflatex not found")
    return
 end
 
@@ -62,6 +61,13 @@ du.check_min_api_version("7.0.0", "pdf_slideshow")
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "pdf_slideshow",
+  purpose = _("generates a PDF slideshow (via Latex) containing all selected images one per slide"),
+  author = "Pascal Obry",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/pdf_slideshow"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -231,7 +237,7 @@ dt.register_storage("pdf_slideshow",_("pdf slideshow"),
       local result = dt.control.execute(command)
       if result ~= 0 then
         dt.print(_("problem running pdflatex")) -- this one is probably usefull to the user
-        error(_("problem running ")..command)
+        error("problem running "..command)
       end
 
       -- open the PDF
@@ -241,7 +247,7 @@ dt.register_storage("pdf_slideshow",_("pdf slideshow"),
       local result = dt.control.execute(command)
       if result ~= 0 then
         dt.print(_("problem running pdf viewer")) -- this one is probably usefull to the user
-        error(_("problem running ")..command)
+        error("problem running "..command)
       end
 
       -- finally do some clean-up

contrib/photils.lua

@@ -44,10 +44,24 @@ local dtsys = require "lib/dtutils.system"
 local MODULE_NAME = "photils"
 du.check_min_api_version("7.0.0", MODULE_NAME) 
 
+local gettext = dt.gettext.gettext
+dt.gettext.bindtextdomain("photils", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "photils",
+  purpose = _("suggest tags based on image classification"),
+  author = "Tobias Scheck",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/photils"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -55,9 +69,6 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 
 
 local PS = dt.configuration.running_os == "windows" and "\\" or "/"
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME,
-    dt.configuration.config_dir .. PS .. "lua" .. PS .. "locale" .. PS)
 
 local exporter = dt.new_format("jpeg")
 exporter.quality = 80
@@ -66,10 +77,6 @@ exporter.max_width = 224
 
 -- helper functions
 
-local function _(msgid)
-    return gettext.dgettext(MODULE_NAME, msgid)
-end
-
 local function num_keys(tbl)
     local num = 0
     for _ in pairs(tbl) do num = num + 1 end
@@ -178,7 +185,7 @@ function PHOTILS.image_changed()
 end
 
 function PHOTILS.tagged_image_has_changed()
-    GUI.warning.label = _("The suggested tags were not generated\n for the currently selected image!")
+    GUI.warning.label = _("the suggested tags were not generated\n for the currently selected image!")
 end
 
 function PHOTILS.paginate()
@@ -235,7 +242,7 @@ end
 
 function PHOTILS.attach_tags()
     local num_selected = #dt.gui.selection()
-    local job = dt.gui.create_job(_("Apply tag to image"), true)
+    local job = dt.gui.create_job(_("apply tag to image"), true)
 
     for i = 1, num_selected, 1 do
         local image = dt.gui.selection()[i]
@@ -247,7 +254,7 @@ function PHOTILS.attach_tags()
         job.percent = i / num_selected
     end
 
-    dt.print(_("Tags successfully attached to image"))
+    dt.print(_("tags successfully attached to image"))
     job.valid = false
 end
 
@@ -313,11 +320,11 @@ function PHOTILS.on_tags_clicked()
     local images = dt.gui.selection()
 
     if #images == 0 then
-        dt.print(_("No image selected."))
+        dt.print(_("no image selected."))
         dt.control.sleep(2000)
     else
         if #images > 1 then
-            dt.print(_("This plugin can only handle a single image."))
+            dt.print(_("this plugin can only handle a single image."))
             dt.gui.selection({images[1]})
             dt.control.sleep(2000)
         end
@@ -428,9 +435,9 @@ end
 
 if not photils_installed then
     GUI.warning_label.label = _("photils-cli not found")
-    dt.print_log(_("photils-cli not found"))
+    dt.print_log("photils-cli not found")
 else
-    GUI.warning_label.label = _("Select an image, click \"get tags\" and get \nsuggestions for tags.")
+    GUI.warning_label.label = _("select an image, click \"get tags\" and get \nsuggestions for tags.")
 end
 
 GUI.pagination = dt.new_widget("box") {
@@ -473,9 +480,9 @@ dt.preferences.register(MODULE_NAME,
                         "export_image_before_for_tags",
                         "bool",
                         _("photils: use exported image for tag request"),
-                        _("If enabled, the image passed to photils for tag suggestion is based on the exported, already edited image. " ..
-                          "Otherwise, the embedded thumbnail of the RAW file will be used for tag suggestion." ..
-                          "The embedded thumbnail could speedup the tag suggestion but can fail if the RAW file is not supported."),
+                        _("if enabled, the image passed to photils for tag suggestion is based on the exported, already edited image. " ..
+                          "otherwise, the embedded thumbnail of the RAW file will be used for tag suggestion." ..
+                          "the embedded thumbnail could speedup the tag suggestion but can fail if the RAW file is not supported."),
                         true)
 
 dt.register_event("photils", "mouse-over-image-changed",

contrib/quicktag.lua

@@ -49,10 +49,25 @@ local debug = require "darktable.debug"
 
 du.check_min_api_version("7.0.0", "quicktag") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("quicktag", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "quicktag",
+  purpose = _("use buttons to quickly apply tags assigned to them"),
+  author = "Christian Kanzian",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/quicktag"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -62,15 +77,6 @@ qt.module_installed = false
 qt.event_registered = false
 qt.widget_table = {}
 
-local gettext = dt.gettext
-
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("quicktag",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("quicktag", msgid)
-end
-
 -- maximum length of button labels
 dt.preferences.register("quickTag",
                         "labellength",

contrib/rate_group.lua

@@ -44,10 +44,25 @@ local du = require "lib/dtutils"
 -- added version check
 du.check_min_api_version("7.0.0", "rate_group") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("rate_group", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "rate_group",
+  purpose = _("rate all images in a group"),
+  author = "Dom H (dom@hxy.io)",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/rate_group"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -62,9 +77,9 @@ local function apply_rating(rating)
       end
   end
   if rating < 0 then
-      dt.print("rejecting group(s)")
+      dt.print(_("rejecting group(s)"))
   else
-      dt.print("applying rating " ..rating.. " to group(s)")
+      dt.print(string.format(_("applying rating %d to group(s)"), rating))
   end
 end
 
@@ -81,37 +96,38 @@ end
 dt.register_event("rg_reject", "shortcut",
   function(event, shortcut)
     apply_rating(-1)
-end, "Reject group")
+end, _("reject group"))
 
 dt.register_event("rg0", "shortcut",
   function(event, shortcut)
     apply_rating(0)
-end, "Rate group 0")
+  end, string.format(_("rate group %d"), 0)
+)
 
 dt.register_event("rg1", "shortcut",
   function(event, shortcut)
     apply_rating(1)
-end, "Rate group 1")
+end, string.format(_("rate group %d"), 1))
 
 dt.register_event("rg2", "shortcut",
   function(event, shortcut)
     apply_rating(2)
-end, "Rate group 2")
+end, string.format(_("rate group %d"), 2))
 
 dt.register_event("rg3", "shortcut",
   function(event, shortcut)
     apply_rating(3)
-end, "Rate group 3")
+end, string.format(_("rate group %d"), 3))
 
 dt.register_event("rg4", "shortcut",
   function(event, shortcut)
     apply_rating(4)
-end, "Rate group 4")
+end, string.format(_("rate group %d"), 4))
 
 dt.register_event("rg5", "shortcut",
   function(event, shortcut)
     apply_rating(5)
-end, "Rate group 5")
+end, string.format(_("rate group %d"), 5))
 
 script_data.destroy = destroy
 

contrib/rename-tags.lua

@@ -36,10 +36,25 @@ local debug = require "darktable.debug"
 du.check_min_api_version("7.0.0", "rename-tags") 
 du.deprecated("contrib/rename-tags.lua","darktable release 4.0")
 
+local gettext = darktable.gettext.gettext
+
+darktable.gettext.bindtextdomain("rename-tags", darktable.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "rename-tags",
+  purpose = _("rename an existing tag"),
+  author = "Sebastian Witt (se.witt@gmx.net)",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/rename-tags"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -50,8 +65,8 @@ rt.module_installed = false
 rt.event_registered = false
 
 -- GUI entries
-local old_tag = darktable.new_widget("entry") { tooltip = "Enter old tag" }
-local new_tag = darktable.new_widget("entry") { tooltip = "Enter new tag" }
+local old_tag = darktable.new_widget("entry") { tooltip = _("enter old tag") }
+local new_tag = darktable.new_widget("entry") { tooltip = _("enter new tag") }
 
 local function rename_reset()
     old_tag.text = ''
@@ -62,11 +77,11 @@ end
 local function rename_tags()
   -- If entries are empty, return
   if old_tag.text == '' then
-    darktable.print ("Old tag can't be empty")
+    darktable.print (_("old tag can't be empty"))
     return
   end
   if new_tag.text == '' then
-    darktable.print ("New tag can't be empty")
+    darktable.print (_("new tag can't be empty"))
     return
   end
   
@@ -76,12 +91,12 @@ local function rename_tags()
   local ot = darktable.tags.find (old_tag.text)
   
   if not ot then
-    darktable.print ("Old tag does not exist")
+    darktable.print (_("old tag does not exist"))
     return
   end
 
   -- Show job
-  local job = darktable.gui.create_job ("Renaming tag", true)
+  local job = darktable.gui.create_job (_("renaming tag"), true)
   
   old_tag.editable = false
   new_tag.editable = false
@@ -104,7 +119,7 @@ local function rename_tags()
   darktable.tags.delete (ot)
 
   job.valid = false
-  darktable.print ("Renamed tags for " .. count .. " images")
+  darktable.print (string.format(_("renamed tags for %d images"), count))
   old_tag.editable = true
   new_tag.editable = true
 
@@ -115,7 +130,7 @@ end
 
 local function install_module()
   if not rt.module_installed then
-    darktable.register_lib ("rename_tags", "rename tag", true, true, {[darktable.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_RIGHT_CENTER", 20},}, rt.rename_widget, nil, nil)
+    darktable.register_lib ("rename_tags", _("rename tag"), true, true, {[darktable.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_RIGHT_CENTER", 20},}, rt.rename_widget, nil, nil)
     rt.module_installed = true
   end
 end
@@ -131,13 +146,13 @@ end
 -- GUI
 local old_widget = darktable.new_widget ("box") {
     orientation = "horizontal",
-    darktable.new_widget("label") { label = "Old tag" },
+    darktable.new_widget("label") { label = _("old tag") },
     old_tag
 }
 
 local new_widget = darktable.new_widget ("box") {
     orientation = "horizontal",
-    darktable.new_widget("label") { label = "New tag" },
+    darktable.new_widget("label") { label = _("new tag") },
     new_tag
 }
 
@@ -146,7 +161,7 @@ rt.rename_widget = darktable.new_widget ("box") {
     reset_callback = rename_reset,
     old_widget,
     new_widget,
-    darktable.new_widget("button") { label = "Go", clicked_callback = rename_tags }
+    darktable.new_widget("button") { label = _("go"), clicked_callback = rename_tags }
 }
 
 if darktable.gui.current_view().id == "lighttable" then

contrib/rename_images.lua

@@ -46,13 +46,12 @@ local df = require "lib/dtutils.file"
 
 du.check_min_api_version("7.0.0", "rename_images") 
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("rename_images",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("rename_images", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-    return gettext.dgettext("rename_images", msgid)
+    return gettext(msgid)
 end
 
 -- namespace variable
@@ -72,6 +71,13 @@ rename.event_registered = false
 -- script_manager integration
 local script_data = {}
 
+script_data.metadata = {
+  name = "rename_images",
+  purpose = _("rename an image file or files"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/rename_images"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -86,7 +92,7 @@ local MODULE_NAME = "rename_images"
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
 local USER = os.getenv("USERNAME")
 local HOME = os.getenv(dt.configuration.running_os == "windows" and "HOMEPATH" or "HOME")
-local PICTURES = HOME .. PS .. dt.configuration.running_os == "windows" and "My Pictures" or "Pictures"
+local PICTURES = HOME .. PS .. dt.configuration.running_os == "windows" and _("My Pictures") or _("Pictures")
 local DESKTOP = HOME .. PS .. "Desktop"
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
@@ -158,8 +164,8 @@ local function substitute_list(str)
     if rename.substitutes[var] then
       str = string.gsub(str, "%$%("..var.."%)", rename.substitutes[var])
     else
-      dt.print_error(_("unrecognized variable " .. var))
-      dt.print(_("unknown variable " .. var .. ", aborting..."))
+      dt.print_error("unrecognized variable " .. var)
+      dt.print(string.format(_("unknown variable %s, aborting..."), var))
       return -1
     end
   end
@@ -208,9 +214,10 @@ end
 
 local function do_rename(images)
   if #images > 0 then
+    local first_image = images[1]
     local pattern = rename.widgets.pattern.text
     dt.preferences.write(MODULE_NAME, "pattern", "string", pattern)
-    dt.print_log(_("pattern is " .. pattern))
+    dt.print_log("pattern is " .. pattern)
     if string.len(pattern) > 0 then
       local datetime = os.date("*t")
 
@@ -250,7 +257,8 @@ local function do_rename(images)
       stop_job(job)
       local collect_rules = dt.gui.libs.collect.filter()
       dt.gui.libs.collect.filter(collect_rules)
-      dt.print(_("renamed " .. #images .. " images"))
+      dt.gui.views.lighttable.set_image_visible(first_image)
+      dt.print(string.format(_("renamed %d images"), #images))
     else -- pattern length
       dt.print_error("no pattern supplied, returning...")
       dt.print(_("please enter the new name or pattern"))

contrib/select_non_existing.lua

@@ -29,11 +29,12 @@ du.check_min_api_version("9.1.0", MODULE)
 -- figure out the path separator
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
 
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("select_non_existing", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-    return gettext.dgettext(MODULE, msgid)
+    return gettext(msgid)
 end
 
 local function stop_job(job)
@@ -73,5 +74,13 @@ dt.gui.libs.select.register_selection(
     _("select all non-existing images in the current images"))
 
 local script_data = {}
+
+script_data.metadata = {
+  name = "select_non_existing",
+  purpose = _("enable selection of non-existing images"),
+  author = "Dirk Dittmar",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/select_non_existing"
+}
+
 script_data.destroy = destroy
 return script_data

contrib/select_untagged.lua

@@ -20,26 +20,32 @@ Enable selection of untagged images (darktable|* tags are ignored)
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "select_untagged") 
 
+dt.gettext.bindtextdomain("select_untagged", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "select_untagged",
+  purpose = _("enable selection of untagged images"),
+  author = "Jannis_V",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/select_untagged"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("select_untagged",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-  return gettext.dgettext("select_untagged", msgid)
-end
-
 local function stop_job(job)
   job.valid = false
 end

contrib/slideshowMusic.lua

@@ -27,26 +27,32 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "slideshowMusic") 
 
+dt.gettext.bindtextdomain("slideshowMusic", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "slideshowMusic",
+  purpose = _("play music during a slideshow"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/slideshowMusic"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("slideshowMusic",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("slideshowMusic", msgid)
-end
-
 local function playSlideshowMusic(_, old_view, new_view)
   local filename, playMusic
 
@@ -54,7 +60,7 @@ local function playSlideshowMusic(_, old_view, new_view)
   playMusic = dt.preferences.read("slideshowMusic","PlaySlideshowMusic","bool")
 
   if not df.check_if_bin_exists("rhythmbox-client") then
-    dt.print_error(_("rhythmbox-client not found"))
+    dt.print_error("rhythmbox-client not found")
     return
   end
 
@@ -70,7 +76,7 @@ local function playSlideshowMusic(_, old_view, new_view)
       if (old_view and old_view.id == "slideshow") then
         stopCommand = "rhythmbox-client --pause"
         --dt.print_error(stopCommand)
-        dt.control.execute( stopCommand)
+        dt.control.execute(stopCommand)
       end
     end
   end
@@ -83,12 +89,12 @@ function destroy()
 end
 
 -- Preferences
-dt.preferences.register("slideshowMusic", "SlideshowMusic", "file", _("Slideshow background music file"), "", "")
+dt.preferences.register("slideshowMusic", "SlideshowMusic", "file", _("slideshow background music file"), "", "")
 dt.preferences.register("slideshowMusic",
                         "PlaySlideshowMusic",
                         "bool",
-                        _("Play slideshow background music"),
-                        _("Plays music with rhythmbox if a slideshow starts"),
+                        _("play slideshow background music"),
+                        _("plays music with rhythmbox if a slideshow starts"),
                         true)
 -- Register
 dt.register_event("slideshow_music", "view-changed",

contrib/transfer_hierarchy.lua

@@ -80,10 +80,23 @@ local dtutils_system = require("lib/dtutils.system")
 local LIB_ID = "transfer_hierarchy"
 dtutils.check_min_api_version("7.0.0", LIB_ID) 
 
+darktable.gettext.bindtextdomain("transfer_hierarchy", darktable.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return darktable.gettext.gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "transfer_hierarchy",
+  purpose = _("allows the moving or copying of images from one directory tree to another, while preserving the existing hierarchy"),
+  author = "August Schwerdfeger (august@schwerdfeger.name)",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/transfer_hierarchy"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -96,12 +109,6 @@ local PATH_SEGMENT_REGEX = "(" .. PATH_SEPARATOR .. "?)([^" .. PATH_SEPARATOR ..
 unpack = unpack or table.unpack
 gmatch = string.gfind or string.gmatch
 
-darktable.gettext.bindtextdomain(LIB_ID, darktable.configuration.config_dir .. PATH_SEPARATOR .. "lua" .. PATH_SEPARATOR .. "locale" .. PATH_SEPARATOR)
-
-local function _(msgid)
-    return darktable.gettext.dgettext(LIB_ID, msgid)
-end
-
 -- Header material: END
 
 
@@ -151,7 +158,7 @@ end
 -- Widgets and business logic: BEGIN
 
 local sourceTextBox = darktable.new_widget("entry") {
-   tooltip = _("Lowest directory containing all selected images"),
+   tooltip = _("lowest directory containing all selected images"),
    editable = false
 						    }
 sourceTextBox.reset_callback = function() sourceTextBox.text = "" end
@@ -268,17 +275,17 @@ local function doTransfer(transferFunc)
        films[film] = destBase .. string.sub(film.path, #sourceBase+1)
        if not pathExists(films[film]) then
            if createDirectory(films[film]) == nil then
-	       darktable.print(_("transfer hierarchy: ERROR: could not create directory: " .. films[film]))
+	       darktable.print(string.format(_("transfer hierarchy: ERROR: could not create directory: %s"),  films[film]))
 	       return
 	   end
        end
        if not pathIsDirectory(films[film]) then
-           darktable.print(_("transfer hierarchy: ERROR: not a directory: " .. films[film]))
+           darktable.print(string.format(_("transfer hierarchy: ERROR: not a directory: %s"), films[film]))
 	   return
        end
        destFilms[film] = darktable.films.new(films[film])
        if destFilms[film] == nil then
-           darktable.print(_("transfer hierarchy: ERROR: could not create film: " .. film.path))
+           darktable.print(string.format(_("transfer hierarchy: ERROR: could not create film: %s"), film.path))
        end
     end
 
@@ -287,7 +294,7 @@ local function doTransfer(transferFunc)
        srcFilms[img] = img.film
     end
 
-    local job = darktable.gui.create_job(string.format(_("transfer hierarchy") .. " (%d image" .. (#(darktable.gui.action_images) == 1 and "" or "s") .. ")", #(darktable.gui.action_images)), true, stopTransfer)
+    local job = darktable.gui.create_job(string.format(_("transfer hierarchy (%d image%s)"), #(darktable.gui.action_images), (#(darktable.gui.action_images) == 1 and "" or "s")), true, stopTransfer)
     job.percent = 0.0
     local pctIncrement = 1.0 / #(darktable.gui.action_images)
     for _,img in ipairs(darktable.gui.action_images) do
@@ -345,7 +352,7 @@ th.transfer_widget = darktable.new_widget("box") {
    },
    darktable.new_widget("button") {
      label = _("copy"),
-     tooltip = _("Copy all selected images"),
+     tooltip = _("copy all selected images"),
      clicked_callback = doCopy
    }
 }

contrib/video_ffmpeg.lua

@@ -37,14 +37,27 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
 local dsys = require "lib/dtutils.system"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "video_ffmpeg") 
 
+dt.gettext.bindtextdomain("video_ffmpeg", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+  return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "video_ffmpeg",
+  purpose = _("timelapse video plugin based on ffmpeg"),
+  author = "Dominik Markiewicz",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contib/video_ffmpeg"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -53,12 +66,6 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 local MODULE_NAME = "video_ffmpeg"
 
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
-
-local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
-end
-
 
 ---- DECLARATIONS
 
@@ -294,7 +301,7 @@ else
 end
 
 local output_directory_chooser = dt.new_widget("file_chooser_button"){
-  title = _("Select export path"),
+  title = _("select export path"),
   is_directory = true,
   tooltip =_("select the target directory for the timelapse. \nthe filename is created automatically."),
   value = string_pref_read("export_path", defaultVideoDir),
@@ -375,7 +382,7 @@ local module_widget = dt.new_widget("box") {
 ---- EXPORT & REGISTRATION
 
 local function show_status(enf_storage, image, format, filename, number, total, high_quality, extra_data)
-  dt.print(_("export ")..tostring(number).." / "..tostring(total))   
+  dt.print(string.format(_("export %d / %d", number), total))   
 end
 
 local function init_export(storage, img_format, images, high_quality, extra_data)
@@ -465,7 +472,7 @@ end
 
 dt.register_storage(
   "module_video_ffmpeg", 
-  _(MODULE_NAME), 
+  _("video ffmpeg"), 
   show_status, 
   finalize_export,
   nil, 

examples/api_version.lua

@@ -23,6 +23,16 @@ USAGE
 ]] 
 local dt = require "darktable"
 
+-- translation facilities
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("api_version", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- script_manager integration to allow a script to be removed
 -- without restarting darktable
 local function destroy()
@@ -30,12 +40,21 @@ local function destroy()
 end
 
 local result = dt.configuration.api_version_string
-dt.print_error("API Version: "..result)
+dt.print_log("API Version: " .. result)
+dt.print(string.format(_("API version: %s"), result))
 
 -- set the destroy routine so that script_manager can call it when
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "api_version",
+  purpose = _("display api_version example"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/api_version"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/darkroom_demo.lua

@@ -40,7 +40,7 @@ local du = require "lib/dtutils"
 -- V E R S I O N  C H E C K
 -- - - - - - - - - - - - - - - - - - - - - - - -
 
-du.check_min_api_version("5.0.2", "darkroom_mode")  -- darktable 3.0
+du.check_min_api_version("5.0.2", "darkroom_demo")  -- darktable 3.0
 
 -- script_manager integration to allow a script to be removed
 -- without restarting darktable
@@ -52,17 +52,18 @@ end
 -- C O N S T A N T S
 -- - - - - - - - - - - - - - - - - - - - - - - -
 
-local MODULE_NAME = "darkroom"
+local MODULE_NAME = "darkroom_demo"
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
 -- T R A N S L A T I O N S
 -- - - - - - - - - - - - - - - - - - - - - - - -
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("darkroom_demo", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
+  return gettext(msgid)
 end
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
@@ -92,13 +93,13 @@ dt.gui.current_view(dt.gui.views.darkroom)
 
 local max_images = 10
 
-dt.print(_("Showing images, with a pause in between each"))
+dt.print(_("showing images, with a pause in between each"))
 sleep(1500)
 
 -- display first 10 images of collection pausing for a second between each
 
 for i, img in ipairs(dt.collection) do 
-  dt.print(_("Displaying image " .. i))
+  dt.print(string.format(_("displaying image "), i))
   dt.gui.views.darkroom.display_image(img)
   sleep(1500)
   if i == max_images then
@@ -108,7 +109,7 @@ end
 
 -- return to lighttable view
 
-dt.print(_("Restoring view"))
+dt.print(_("restoring view"))
 sleep(1500)
 dt.gui.current_view(current_view)
 
@@ -116,6 +117,14 @@ dt.gui.current_view(current_view)
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "darkroom_demo",
+  purpose = _("example demonstrating how to control image display in darkroom mode"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/darkroom_demo"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/gettextExample.lua

@@ -67,27 +67,33 @@ end
 -- Not translated Text
 dt.print_error("Hello World!")
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext 
+
+dt.gettext.bindtextdomain("gettextExample", dt.configuration.config_dir .."/lua/locale/")
+
 -- Translate a string using the darktable textdomain
-dt.print_error(gettext.gettext("image"))
-
--- Tell gettext where to find the .mo file translating messages for a particular domain
-
-gettext.bindtextdomain("gettextExample",dt.configuration.config_dir.."/lua/locale/")
--- Translate a string using the specified textdomain
-dt.print_error(gettext.dgettext("gettextExample", 'Hello World!'))
+dt.print_error(gettext("image"))
 
 -- Define a local function called _ to make the code more readable and have it call dgettext 
 -- with the proper domain.
 local function _(msgid)
-    return gettext.dgettext("gettextExample", msgid)
+    return gettext(msgid)
 end
-dt.print_error(_('Hello World!'))
+
+dt.print_error(_("hello world!"))
 
 -- set the destroy routine so that script_manager can call it when
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "gettextExample",
+  purpose = _("example of how translations works"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/gettextExample"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/gui_action.lua

@@ -4,6 +4,29 @@ local NaN = 0/0
 
 local wg = {}
 
+local gettext = dt.gettext.gettext 
+dt.gettext.bindtextdomain("gui_action", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
+-- return data structure for script_manager
+
+local script_data = {}
+
+script_data.metadata = {
+  name = "gui_action",
+  purpose = _("example of how to use darktable.gui.action() calls"),
+  author = "Diederik ter Rahe",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/gui_action"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 wg.action = dt.new_widget("entry"){
     text = "lib/filter/view",
     placeholder = "action path",
@@ -103,3 +126,18 @@ dt.register_lib(
       },
     }
   )
+
+local function restart()
+  dt.gui.libs["execute_action"].visible = true
+end
+
+local function destroy()
+  dt.gui.libs["execute_action"].visible = false
+end
+
+script_data.destroy = destroy
+script_data.destroy_method = "hide"
+script_data.restart = restart
+script_data.show = restart
+
+return script_data

examples/hello_world.lua

@@ -29,20 +29,38 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 
+-- translation facilities
+
 du.check_min_api_version("2.0.0", "hello_world") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("hello_world", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- script_manager integration to allow a script to be removed
 -- without restarting darktable
 local function destroy()
     -- nothing to destroy
 end
 
-dt.print("hello, world")
+dt.print(_("hello, world"))
 
 -- set the destroy routine so that script_manager can call it when
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "hello_world",
+  purpose = _("example of how to print a message to the screen"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/hello_world"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/lighttable_demo.lua

@@ -59,11 +59,12 @@ end
 -- - - - - - - - - - - - - - - - - - - - - - - -
 -- T R A N S L A T I O N S
 -- - - - - - - - - - - - - - - - - - - - - - - -
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("lighttable_demo", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
+  return gettext(msgid)
 end
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
@@ -145,17 +146,17 @@ sleep(2000)
 
 for n, layout in ipairs(layouts) do
   dt.gui.libs.lighttable_mode.layout(layout)
-  dt.print(_("set lighttable layout to " .. layout))
-  dt.print_log(_("set lighttable layout to " .. layout))
+  dt.print(string.format(_("set lighttable layout to %s"), layout))
+  dt.print_log("set lighttable layout to " .. layout)
   sleep(1500)
   for i = 1, 10 do
     dt.gui.libs.lighttable_mode.zoom_level(i)
-    dt.print(_("Set zoom level to " .. i))
+    dt.print(string.format(_("set zoom level to %d"), i))
     sleep(1500)
   end
   for i = 9, 1, -1 do
     dt.gui.libs.lighttable_mode.zoom_level(i)
-    dt.print(_("Set zoom level to " .. i))
+    dt.print(string.format(_("set zoom level to %d"), i))
     sleep(1500)
   end
 end
@@ -174,12 +175,12 @@ dt.print_log("starting sorts")
 
 for n, sort in ipairs(sorts) do
   dt.gui.libs.filter.sort(sort)
-  dt.print(_("set lighttable sort to " .. sort))
+  dt.print(string.format(_("set lighttable sort to %s"), sort))
   sleep(1500)
 
   for m, sort_order in ipairs(sort_orders) do
     dt.gui.libs.filter.sort_order(sort_order)
-    dt.print(_("sort order set to " .. sort_order))
+    dt.print(string.format(_("sort order set to %s"), sort_order))
     sleep(1500)
   end
 end
@@ -190,12 +191,12 @@ dt.print(_("lighttable filtering demonstration"))
 
 for n, rating in ipairs(ratings) do
   dt.gui.libs.filter.rating(rating)
-  dt.print(_("set filter to " .. rating))
+  dt.print(string.format(_("set filter to %s"), rating))
   sleep(1500)
 
   for m, rating_comparator in ipairs(rating_comparators) do
     dt.gui.libs.filter.rating_comparator(rating_comparator)
-    dt.print(_("set rating comparator to " .. rating_comparator))
+    dt.print(string.format(_("set rating comparator to %s"), rating_comparator))
     sleep(1500)
   end
 end
@@ -215,6 +216,14 @@ current_sort_order = dt.gui.libs.filter.sort_order(current_sort_order)
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "lighttable_demo",
+  purpose = _("example demonstrating how to control lighttable display modes"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/lighttable_demo"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/moduleExample.lua

@@ -35,10 +35,26 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "moduleExample") 
 
+-- https://www.darktable.org/lua-api/index.html#darktable_gettext
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("moduleExample", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "moduleExample",
+  purpose = _("example of how to create a lighttable module"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/moduleExample"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -46,15 +62,6 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 
 -- translation
 
--- https://www.darktable.org/lua-api/index.html#darktable_gettext
-local gettext = dt.gettext
-
-gettext.bindtextdomain("moduleExample", dt.configuration.config_dir .. "/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("moduleExample", msgid)
-end
-
 -- declare a local namespace and a couple of variables we'll need to install the module
 local mE = {}
 mE.widgets = {}
@@ -80,9 +87,9 @@ local function install_module()
         orientation = "vertical",
         dt.new_widget("button")
         {
-          label = _("MyButton"),
+          label = _("my button"),
           clicked_callback = function (_)
-            dt.print(_("Button clicked"))
+            dt.print(_("button clicked"))
           end
         },
         table.unpack(mE.widgets),
@@ -105,10 +112,10 @@ local function restart()
 end
 
 -- https://www.darktable.org/lua-api/types_lua_check_button.html
-local check_button = dt.new_widget("check_button"){label = _("MyCheck_button"), value = true}
+local check_button = dt.new_widget("check_button"){label = _("my check_button"), value = true}
 
 -- https://www.darktable.org/lua-api/types_lua_combobox.html
-local combobox = dt.new_widget("combobox"){label = _("MyCombobox"), value = 2, "8", "16", "32"}
+local combobox = dt.new_widget("combobox"){label = _("my combobox"), value = 2, "8", "16", "32"}
 
 -- https://www.darktable.org/lua-api/types_lua_entry.html
 local entry = dt.new_widget("entry")
@@ -117,21 +124,21 @@ local entry = dt.new_widget("entry")
     placeholder = _("placeholder"),
     is_password = false,
     editable = true,
-    tooltip = _("Tooltip Text"),
+    tooltip = _("tooltip text"),
     reset_callback = function(self) self.text = "text" end
 }
 
 -- https://www.darktable.org/lua-api/types_lua_file_chooser_button.html
 local file_chooser_button = dt.new_widget("file_chooser_button")
 {
-    title = _("MyFile_chooser_button"),  -- The title of the window when choosing a file
+    title = _("my file_chooser_button"),  -- The title of the window when choosing a file
     value = "",                       -- The currently selected file
     is_directory = false              -- True if the file chooser button only allows directories to be selecte
 }
 
 -- https://www.darktable.org/lua-api/types_lua_label.html
 local label = dt.new_widget("label")
-label.label = _("MyLabel") -- This is an alternative way to the "{}" syntax to set a property 
+label.label = _("my label") -- This is an alternative way to the "{}" syntax to set a property 
 
 -- https://www.darktable.org/lua-api/types_lua_separator.html
 local separator = dt.new_widget("separator"){}
@@ -139,7 +146,7 @@ local separator = dt.new_widget("separator"){}
 -- https://www.darktable.org/lua-api/types_lua_slider.html
 local slider = dt.new_widget("slider")
 {
-  label = _("MySlider"), 
+  label = _("my slider"), 
   soft_min = 10,      -- The soft minimum value for the slider, the slider can't go beyond this point
   soft_max = 100,     -- The soft maximum value for the slider, the slider can't go beyond this point
   hard_min = 0,       -- The hard minimum value for the slider, the user can't manually enter a value beyond this point

examples/multi_os.lua

@@ -70,13 +70,12 @@ local dtsys = require "lib/dtutils.system"  -- system utilities
     translations, inserting this lays the groundwork for anyone who wants to translate the strings.
 ]]
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("multi_os",dt.configuration.config_dir.."/lua/locale/")
+dt.gettext.bindtextdomain("multi_os", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-    return gettext.dgettext("multi_os", msgid)
+    return gettext(msgid)
 end
 
 --[[
@@ -187,12 +186,12 @@ local function extract_embedded_jpeg(images)
         end
       else
         dt.print_error(image.filename .. " is not a raw file.  No image can be extracted") -- print debugging error message
-        dt.print(image.filename .. " is not a raw file.  No image can be extracted") -- print the error to the screen
+        dt.print(string.format(_("%s is not a raw file, no image can be extracted"), image.filename)) -- print the error to the screen
       end
     end
   else
     dt.print_error("ufraw-batch not found.  Exiting...") -- print debugging error message
-    dt.print("ufraw-batch not found.  Exiting...") -- print the error to the screen
+    dt.print("ufraw-batch not found, exiting...") -- print the error to the screen
   end
 end
 
@@ -216,7 +215,7 @@ end
 if dt.configuration.running_os ~= "linux" then
   local executable = "ufraw-batch"
   local ufraw_batch_path_widget = dt.new_widget("file_chooser_button"){
-    title = _("Select ufraw-batch[.exe] executable"),
+    title = _("select ufraw-batch[.exe] executable"),
     value = df.get_executable_path_preference(executable),
     is_directory = false,
     changed_callback = function(self)
@@ -228,7 +227,7 @@ if dt.configuration.running_os ~= "linux" then
   dt.preferences.register("executable_paths", "ufraw-batch", -- name
     "file", -- type
     _('multi_os: ufraw-batch location'),  -- label
-    _('Installed location of ufraw-batch. Requires restart to take effect.'), -- tooltip
+    _('installed location of ufraw-batch, requires restart to take effect.'), -- tooltip
     "ufraw-batch", -- default
     ufraw_batch_path_widget
   )
@@ -241,7 +240,7 @@ end
 dt.gui.libs.image.register_action(
   "multi_os", _("extract embedded jpeg"),
   function(event, images) extract_embedded_jpeg(images) end,
-  "extract embedded jpeg"
+  _("extract embedded jpeg")
 )
   
 --[[
@@ -251,7 +250,7 @@ dt.gui.libs.image.register_action(
 dt.register_event(
   "multi_os", "shortcut",
   function(event, shortcut) extract_embedded_jpeg(dt.gui.action_images) end,
-  "extract embedded jpeg"
+  _("extract embedded jpeg")
 )
 
 --[[
@@ -261,6 +260,14 @@ dt.register_event(
 ]]
 
 local script_data = {}
+
+script_data.metadata = {
+  name = "multi_os",
+  purpose = _("example module thet runs on different operating systems"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/multi_os"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/panels_demo.lua

@@ -53,17 +53,18 @@ end
 -- C O N S T A N T S
 -- - - - - - - - - - - - - - - - - - - - - - - -
 
-local MODULE_NAME = "panels"
+local MODULE_NAME = "panels_demo"
 local PS = dt.configuration.running_os == "windows" and  "\\"  or  "/"
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
 -- T R A N S L A T I O N S
 -- - - - - - - - - - - - - - - - - - - - - - - -
-local gettext = dt.gettext
-gettext.bindtextdomain(MODULE_NAME, dt.configuration.config_dir..PS.."lua"..PS.."locale"..PS)
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("panels_demo", dt.configuration.config_dir .."/lua/locale/")
 
 local function _(msgid)
-  return gettext.dgettext(MODULE_NAME, msgid)
+  return gettext(msgid)
 end
 
 -- - - - - - - - - - - - - - - - - - - - - - - -
@@ -94,29 +95,29 @@ dt.gui.panel_show_all()
 
 -- hide center_top, center_bottom, left, top, right, bottom in order
 
-dt.print(_("Hiding all panels, one at a tme"))
+dt.print(_("hiding all panels, one at a tme"))
 sleep(1500)
 
 for i = 1, #panels do
-  dt.print(_("Hiding " .. panels[i]))
+  dt.print(_("hiding " .. panels[i]))
   dt.gui.panel_hide(panels[i])
   sleep(1500)
 end
 
 -- display left, then top, then right, then bottom
 
-  dt.print(_("Make panels visible, one at a time"))
+  dt.print(_("make panels visible, one at a time"))
   sleep(1500)
 
   for i = #panels, 1, -1 do
-    dt.print(_("Showing " .. panels[i]))
+    dt.print(_("showing " .. panels[i]))
     dt.gui.panel_show(panels[i])
     sleep(1500)
   end
 
 -- hide all
 
-dt.print(_("Hiding all panels"))
+dt.print(_("hiding all panels"))
 sleep(1500)
 
 dt.gui.panel_hide_all()
@@ -124,7 +125,7 @@ sleep(1500)
 
 -- show all
 
-dt.print(_("Showing all panels"))
+dt.print(_("showing all panels"))
 sleep(1500)
 
 dt.gui.panel_show_all()
@@ -132,7 +133,7 @@ sleep(1500)
 
 -- restore
 
-dt.print(_("Restoring panels to starting configuration"))
+dt.print(_("restoring panels to starting configuration"))
 for i = 1, #panels do
   if panel_status[i] then
     dt.gui.panel_show(panels[i])
@@ -145,6 +146,14 @@ end
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "panels_demo",
+  purpose = _("example demonstrating how to contol panel visibility"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/panels_demo"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/preferenceExamples.lua

@@ -24,28 +24,47 @@ USAGE
 local dt = require "darktable"
 local du = require "lib/dtutils"
 
+-- translation facilities
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("preferenceExamples", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
+local script_data = {}
+
+script_data.metadata = {
+  name = "preferenceExamples",
+  purpose = _("example to show the different preference types that are possible"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/preferenceExamples"
+}
+
 du.check_min_api_version("2.0.1", "preferenceExamples") 
 
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference.
                         "preferenceExamplesString",  -- name
                         "string",                     -- type
-                        "Example String",            -- label
-                        "Example String Tooltip",    -- tooltip
+                        _("example string"),            -- label
+                        _("example string tooltip"),    -- tooltip
                         "String")                     -- default
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference. 
                         "preferenceExamplesBool",  -- name
                         "bool",                       -- type
-                        "Example Boolean",           -- label
-                        "Example Boolean Tooltip",   -- tooltip
+                        _("example boolean"),           -- label
+                        _("example boolean tooltip"),   -- tooltip
                         true)                         -- default
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference. 
                         "preferenceExamplesInteger",  -- name
                         "integer",                    -- type
-                        "Example Integer",           -- label
-                        "Example Integer Tooltip",   -- tooltip
+                        _("example integer"),           -- label
+                        _("example integer tooltip"),   -- tooltip
                         2,                            -- default
                         1,                            -- min
                         99)                           -- max
@@ -53,8 +72,8 @@ dt.preferences.register("preferenceExamples",        -- script: This is a string
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference. 
                         "preferenceExamplesFloat",  -- name
                         "float",                      -- type
-                        "Example Float",             -- label
-                        "Example Float Tooltip",     -- tooltip
+                        _("example float"),             -- label
+                        _("example float tooltip"),     -- tooltip
                         1.3,                          -- default
                         1,                            -- min
                         99,                           -- max
@@ -63,22 +82,30 @@ dt.preferences.register("preferenceExamples",        -- script: This is a string
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference. 
                         "preferenceExamplesFile",  -- name
                         "file",                       -- type
-                        "Example File",              -- label
-                        "Example File Tooltip",      -- tooltip
+                        _("example file"),              -- label
+                        _("example file tooltip"),      -- tooltip
                         "")                           -- default
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference.
                         "preferenceExamplesDirectory",  -- name
                         "directory",                  -- type
-                        "Example Directory",         -- label
-                        "Example Directory Tooltip", -- tooltip
+                        _("example directory"),         -- label
+                        _("example directory tooltip"), -- tooltip
                         "")                           -- default
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference.
                         "preferenceExamplesEnum",  -- name
                         "enum",                       -- type
-                        "Example Enum",              -- label
-                        "Example Enum Tooltip",      -- tooltip
+                        _("example enum"),              -- label
+                        _("example enum tooltip"),      -- tooltip
                         "Enum 1",                     -- default
                         "Enum 1", "Enum 2")           -- values
 
+
+local function destroy()
+  -- nothing to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data

examples/printExamples.lua

@@ -24,6 +24,16 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("5.0.0", "printExamples") 
 
+-- translation facilities
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("printExamples", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- script_manager integration to allow a script to be removed
 -- without restarting darktable
 local function destroy()
@@ -32,7 +42,7 @@ end
 
 -- Will print a string to the darktable control log (the long
 -- overlayed window that appears over the main panel).
-dt.print("print")
+dt.print(_("print"))
 
 -- This function will print its parameter if the Lua logdomain is
 -- activated. Start darktable with the "-d lua" command line option
@@ -48,6 +58,14 @@ dt.print_log("print log")
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "printExamples",
+  purpose = _("example showing the different types of printing messages"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/printExamples"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/running_os.lua

@@ -30,18 +30,36 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("5.0.0", "running_os") 
 
+-- translation facilities
+
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("running_os", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- script_manager integration to allow a script to be removed
 -- without restarting darktable
 local function destroy()
   -- nothing to destroy
 end
 
-dt.print("You are running: "..dt.configuration.running_os)
+dt.print(string.format(_("you are running: %s"), dt.configuration.running_os))
 
 -- set the destroy routine so that script_manager can call it when
 -- it's time to destroy the script and then return the data to 
 -- script_manager
 local script_data = {}
+
+script_data.metadata = {
+  name = "running_os",
+  purpose = _("example of how to determine the operating system being used"),
+  author = "Tobias Jakobs",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/running_os"
+}
+
 script_data.destroy = destroy
 
 return script_data

examples/x-touch.lua

@@ -55,6 +55,29 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("9.2.0", "x-touch")
 
+local gettext = dt.gettext.gettext 
+dt.gettext.bindtextdomain("gui_action", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
+-- return data structure for script_manager
+
+local script_data = {}
+
+script_data.metadata = {
+  name = "x-touch",
+  purpose = _("example of how to control an x-touch midi device"),
+  author = "Diederik ter Rahe",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/examples/x-touch"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 -- set up 8 mimic sliders with the same function
 for k = 1,8 do
   dt.gui.mimic("slider", "knob ".. k,
@@ -161,3 +184,11 @@ for k = 1,8 do
       return dt.gui.action(which, element, effect, size)
     end)
 end
+
+local function destroy()
+  -- nothing to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data

lib/dtutils.lua

@@ -82,8 +82,7 @@ dtutils.libdoc.functions["check_max_api_version"] = {
     run against the current api version. This function is used when a part of the Lua API that 
     the script relies on is removed.  If the maximum api version is not met, then an 
     error message is printed saying the script_name failed to load, then an error is thrown causing the
-    program to stop executing. 
-
+    program to stop executing.]],
   Return_Value = [[result - true if the maximum api version is available, false if not.]],
   Limitations = [[When using the default handler on a script being executed from the luarc file, the error thrown
     will stop the luarc file from executing any remaining statements. This limitation does not apply to script_manger.]],

lib/dtutils/file.lua

@@ -861,9 +861,6 @@ dtutils_file.libdoc.functions["create_tmp_file"] = {
 
 function dtutils_file.create_tmp_file()
   local tmp_file = os.tmpname()
-  if dt.configuration.running_os == "windows" then
-      tmp_file = dt.configuration.tmp_dir .. tmp_file -- windows os.tmpname() defaults to root directory
-  end
 
   local f = io.open(tmp_file, "w")
   if not f then

lib/dtutils/log.lua

@@ -199,7 +199,7 @@ function dtutils_log.msg(level, ...)
       table.remove(args, 1)
     end
     local log_msg = level.label
-    if level.engine ~= dt_screen and call_level ~= 0 then
+    if level.engine ~= dt_print and call_level ~= 0 then
       log_msg = log_msg .. dtutils_log.caller(call_level, level.caller_info) .. " "
     elseif log_msg:len() > 2 then
       log_msg = log_msg .. " "

lib/dtutils/string.lua

@@ -1,6 +1,12 @@
 local dtutils_string = {}
 
 local dt = require "darktable"
+local du = require "lib/dtutils"
+local log = require "lib/dtutils.log"
+
+local DEFAULT_LOG_LEVEL = log.error
+
+dtutils_string.log_level = DEFAULT_LOG_LEVEL
 
 dtutils_string.libdoc = {
   Name = [[dtutils.string]],
@@ -48,6 +54,8 @@ dtutils_string.libdoc.functions["strip_accents"] = {
 }
 
 function dtutils_string.strip_accents( str )
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   local tableAccents = {}
     tableAccents["à"] = "a"
     tableAccents["á"] = "a"
@@ -111,6 +119,7 @@ function dtutils_string.strip_accents( str )
     end
   end
         
+  log.log_level(old_log_level)
   return normalizedString
  
 end
@@ -136,6 +145,8 @@ dtutils_string.libdoc.functions["escape_xml_characters"] = {
 
 -- Keep & first, otherwise it will double escape other characters
 function dtutils_string.escape_xml_characters( str )
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
 
   str = string.gsub(str,"&", "&")
   str = string.gsub(str,"\"", """)
@@ -143,6 +154,7 @@ function dtutils_string.escape_xml_characters( str )
   str = string.gsub(str,"<", "&lt;")
   str = string.gsub(str,">", "&gt;")
 
+  log.log_level(old_log_level)
   return str
 end
 
@@ -165,11 +177,14 @@ dtutils_string.libdoc.functions["urlencode"] = {
 }
 
 function dtutils_string.urlencode(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   if (str) then
     str = string.gsub (str, "\n", "\r\n")
     str = string.gsub (str, "([^%w ])", function (c) return string.format ("%%%02X", string.byte(c)) end)
     str = string.gsub (str, " ", "+")
   end
+  log.log_level(old_log_level)
   return str
 end
 
@@ -192,38 +207,52 @@ dtutils_string.libdoc.functions["is_not_sanitized"] = {
 }
 
 local function _is_not_sanitized_posix(str)
-   -- A sanitized string must be quoted.
-   if not string.match(str, "^'.*'$") then
-       return true
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+  -- A sanitized string must be quoted.
+  if not string.match(str, "^'.*'$") then
+    log.log_level(old_log_level)
+    return true
    -- A quoted string containing no quote characters within is sanitized.
-   elseif string.match(str, "^'[^']*'$") then
-       return false
-   end
+  elseif string.match(str, "^'[^']*'$") then
+    log.log_level(old_log_level)
+    return false
+  end
    
-   -- Any quote characters within a sanitized string must be properly
-   -- escaped.
-   local quotesStripped = string.sub(str, 2, -2)
-   local escapedQuotesRemoved = string.gsub(quotesStripped, "'\\''", "")
-   if string.find(escapedQuotesRemoved, "'") then
-       return true
-   else
-       return false
-   end
+  -- Any quote characters within a sanitized string must be properly
+  -- escaped.
+  local quotesStripped = string.sub(str, 2, -2)
+  local escapedQuotesRemoved = string.gsub(quotesStripped, "'\\''", "")
+  if string.find(escapedQuotesRemoved, "'") then
+    log.log_level(old_log_level)
+    return true
+  else
+    log.log_level(old_log_level)
+    return false
+  end
 end
 
 local function _is_not_sanitized_windows(str)
-   if not string.match(str, "^\".*\"$") then
-      return true
-   else
-      return false
-   end
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+  if not string.match(str, "^\".*\"$") then
+    log.log_level(old_log_level)
+    return true
+  else
+    log.log_level(old_log_level)
+    return false
+  end
 end
 
 function dtutils_string.is_not_sanitized(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   if dt.configuration.running_os == "windows" then
-      return _is_not_sanitized_windows(str)
+    log.log_level(old_log_level)
+    return _is_not_sanitized_windows(str)
   else
-      return _is_not_sanitized_posix(str)
+    log.log_level(old_log_level)
+    return _is_not_sanitized_posix(str)
   end
 end
 
@@ -246,27 +275,55 @@ dtutils_string.libdoc.functions["sanitize"] = {
 }
 
 local function _sanitize_posix(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   if _is_not_sanitized_posix(str) then
-      return "'" .. string.gsub(str, "'", "'\\''") .. "'"
+    log.log_level(old_log_level)
+    return "'" .. string.gsub(str, "'", "'\\''") .. "'"
   else
-       return str
+    log.log_level(old_log_level)
+    return str
   end
 end
 
 local function _sanitize_windows(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   if _is_not_sanitized_windows(str) then
-      return "\"" .. string.gsub(str, "\"", "\"^\"\"") .. "\""
+    log.log_level(old_log_level)
+    return "\"" .. string.gsub(str, "\"", "\"^\"\"") .. "\""
   else
-      return str
+    log.log_level(old_log_level)
+    return str
   end
 end
 
-function dtutils_string.sanitize(str)
-  if dt.configuration.running_os == "windows" then
-      return _sanitize_windows(str)
-  else
-      return _sanitize_posix(str)
+local function _should_be_sanitized(str)
+  local old_log_level = log.log_level()
+  local result = false
+  log.log_level(dtutils_string.log_level)
+  if string.match(str, "[^%g]") then
+    result =  true
   end
+  log.log_level(old_log_level)
+  return result
+end
+
+function dtutils_string.sanitize(str)
+  local old_log_level = log.log_level()
+  local sanitized_str = nil
+  log.log_level(dtutils_string.log_level)
+  if _should_be_sanitized(str) then
+    if dt.configuration.running_os == "windows" then
+      sanitized_str = _sanitize_windows(str)
+    else
+      sanitized_str = _sanitize_posix(str)
+    end
+  else
+    sanitized_str = str
+  end
+  log.log_level(old_log_level)
+  return sanitized_str
 end
 
 dtutils_string.libdoc.functions["sanitize_lua"] = {
@@ -288,9 +345,16 @@ dtutils_string.libdoc.functions["sanitize_lua"] = {
 }
 
 function dtutils_string.sanitize_lua(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+  str = string.gsub(str, "%%", "%%%%")
   str = string.gsub(str, "%-", "%%-")
   str = string.gsub(str, "%(", "%%(")
   str = string.gsub(str, "%)", "%%)")
+  str = string.gsub(str, "%[", "%%[")
+  str = string.gsub(str, "%]", "%%]")
+  str = string.gsub(str, "+", "%%+")
+  log.log_level(old_log_level)
   return str
 end
 
@@ -313,7 +377,9 @@ dtutils_string.libdoc.functions["split_filepath"] = {
 }
 
 function dtutils_string.split_filepath(str)
-  -- strip out single quotes from quoted pathnames
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+ -- strip out single quotes from quoted pathnames
   str = string.gsub(str, "'", "")
   str = string.gsub(str, '"', '')
   local result = {}
@@ -323,6 +389,7 @@ function dtutils_string.split_filepath(str)
     result["basename"] = result["filetype"]
     result["filetype"] = ""
   end
+  log.log_level(old_log_level)
   return result
 end
 
@@ -344,7 +411,10 @@ dtutils_string.libdoc.functions["get_path"] = {
 }
 
 function dtutils_string.get_path(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   local parts = dtutils_string.split_filepath(str)
+  log.log_level(old_log_level)
   return parts["path"]
 end
 
@@ -366,7 +436,10 @@ dtutils_string.libdoc.functions["get_filename"] = {
 }
 
 function dtutils_string.get_filename(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   local parts = dtutils_string.split_filepath(str)
+  log.log_level(old_log_level)
   return parts["filename"]
 end
 
@@ -389,7 +462,10 @@ dtutils_string.libdoc.functions["get_basename"] = {
 }
 
 function dtutils_string.get_basename(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   local parts = dtutils_string.split_filepath(str)
+  log.log_level(old_log_level)
   return parts["basename"]
 end
 
@@ -411,10 +487,601 @@ dtutils_string.libdoc.functions["get_filetype"] = {
 }
 
 function dtutils_string.get_filetype(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
   local parts = dtutils_string.split_filepath(str)
+  log.log_level(old_log_level)
   return parts["filetype"]
 end
 
+dtutils_string.libdoc.functions["build_substitute_list"] = {
+  Name = [[build_substitute_list]],
+  Synopsis = [[build a list of variable substitutions]],
+  Usage = [[local ds = require "lib/dtutils.string"
+    ds.build_substitute_list(image, sequence, variable_string, [username], [pic_folder], [home], [desktop])
+      image - dt_lua_image_t - the image being processed
+      sequence - integer - the sequence number of the image being processed (exported)
+      variable_string - string - the substitution variable string
+      [username] - string - optional - user name.  Will be determined if not supplied
+      [pic_folder] - string - optional - pictures folder name.  Will be determined if not supplied
+      [home] - string - optional - home directory.  Will be determined if not supplied
+      [desktop] - string - optional - desktop directory.  Will be determined if not supplied]],
+  Description = [[build_substitute_list populates variables with values from the arguments
+    and determined from the system and darktable.]],
+  Return_Value = [[]],
+  Limitations = [[If the value for a variable can not be determined, or if it is not supported,
+    then an empty string is used for the value.]],
+  Example = [[]],
+  See_Also = [[https://docs.darktable.org/usermanual/4.6/en/special-topics/variables/]],
+  Reference = [[]],
+  License = [[]],
+  Copyright = [[]],
+}
+
+local substitutes = {}
+local category_substitutes = {}
+
+-- - - - - - - - - - - - - - - - - - - - - - - -
+-- C O N S T A N T S
+-- - - - - - - - - - - - - - - - - - - - - - - -
+
+local PLACEHOLDERS = {"ROLL.NAME", 
+                      "FILE.FOLDER", 
+                      "FILE.NAME",
+                      "FILE.EXTENSION", 
+                      "ID", 
+                      "VERSION", 
+                      "VERSION.IF.MULTI",
+                      "VERSION.NAME",
+                      "DARKTABLE.VERSION",
+                      "DARKTABLE.NAME",           -- Not Implemented
+                      "SEQUENCE",
+                      "WIDTH.SENSOR",
+                      "HEIGHT.SENSOR",
+                      "WIDTH.RAW",
+                      "HEIGHT.RAW",
+                      "WIDTH.CROP",
+                      "HEIGHT.CROP",
+                      "WIDTH.EXPORT",
+                      "HEIGHT.EXPORT",
+                      "WIDTH.MAX",                -- Not Implemented
+                      "HEIGHT.MAX",               -- Not Implemented
+                      "YEAR", 
+                      "YEAR.SHORT",
+                      "MONTH", 
+                      "MONTH.LONG",
+                      "MONTH.SHORT",
+                      "DAY", 
+                      "HOUR", 
+                      "MINUTE", 
+                      "SECOND", 
+                      "MSEC",
+                      "EXIF.YEAR", 
+                      "EXIF.YEAR.SHORT",
+                      "EXIF.MONTH", 
+                      "EXIF.MONTH.LONG",
+                      "EXIF.MONTH.SHORT",
+                      "EXIF.DAY",
+                      "EXIF.HOUR", 
+                      "EXIF.MINUTE", 
+                      "EXIF.SECOND", 
+                      "EXIF.MSEC",
+                      "EXIF.DATE.REGIONAL",       -- Not Implemented
+                      "EXIF.TIME.REGIONAL",       -- Not Implemented
+                      "EXIF.ISO",
+                      "EXIF.EXPOSURE",
+                      "EXIF.EXPOSURE.BIAS",
+                      "EXIF.APERTURE",
+                      "EXIF.CROP.FACTOR",
+                      "EXIF.FOCAL.LENGTH",
+                      "EXIF.FOCAL.LENGTH.EQUIV",  -- Not Implemented
+                      "EXIF.FOCUS.DISTANCE",
+                      "IMAGE.EXIF",               -- Not Implemented
+                      "LONGITUDE",
+                      "LATITUDE",
+                      "ELEVATION",
+                      "GPS.LOCATION",             -- Not Implemented
+                      "STARS", 
+                      "RATING.ICONS",             -- Not Implemented
+                      "LABELS",
+                      "LABELS.ICONS",             -- Not Implemented 
+                      "MAKER", 
+                      "MODEL", 
+                      "LENS",
+                      "TITLE",
+                      "DESCRIPTION",
+                      "CREATOR", 
+                      "PUBLISHER", 
+                      "RIGHTS", 
+                      "TAGS",                     -- Not Implemented
+                      "SIDECAR.TXT",              -- Not Implemented
+                      "FOLDER.PICTURES",
+                      "FOLDER.HOME", 
+                      "FOLDER.DESKTOP",
+                      "OPENCL.ACTIVATED",         -- Not Implemented
+                      "USERNAME",
+                      "NL",                       -- Not Implemented
+                      "JOBCODE"                   -- Not Implemented
+}
+
+local PS        = dt.configuration.running_os == "windows" and  "\\"  or  "/"
+local USER      = os.getenv("USERNAME")
+local HOME      =  dt.configuration.running_os == "windows" and  os.getenv("HOMEPATH") or os.getenv("HOME")
+local PICTURES  = HOME .. PS .. (dt.configuration.running_os == "windows" and "My Pictures" or "Pictures")
+local DESKTOP   = HOME .. PS .. "Desktop"
+
+local function get_colorlabels(image)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  local colorlabels = {}
+
+  if image.red then table.insert(colorlabels, "red") end
+  if image.yellow then table.insert(colorlabels, "yellow") end
+  if image.green then table.insert(colorlabels, "green") end
+  if image.blue then table.insert(colorlabels, "blue") end
+  if image.purple then table.insert(colorlabels, "purple") end
+
+  local labels = #colorlabels == 1 and colorlabels[1] or du.join(colorlabels, "_")
+
+  log.log_level(old_log_level)
+
+  return labels 
+end
+
+-- find the $CATEGORYn and $CATEGORY[n,m] requests and add them to the substitute list
+
+local function build_category_substitution_list(image, variable_string)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  for match in string.gmatch(variable_string, "%$%(.-%)?%)") do -- grab each complete variable 
+    log.msg(log.info, "match is " .. match)
+
+    local var = string.match(match, "%$%((.-%)?)%)")  -- strip of the leading $( and trailing )
+    log.msg(log.info, "var is " .. var)
+
+    if string.match(var, "CATEGORY%d") or string.match(var, "CATEGORY%[") then
+      local element
+      local tag
+
+      if string.match(var, "CATEGORY%d") then
+        element, tag = string.match(var, "CATEGORY(%d)%((.-)%)")   -- get the element number and the tag to match
+      else
+        element, tag = string.match(var, "%[(%d),(.-)%]") -- new syntax
+      end
+
+      element = element + 1  -- add one to element since lua arrays are 1 based
+      log.msg(log.debug, "element is " .. element .. " and tag is " .. tag)
+
+      local tags = image:get_tags()
+      log.msg(log.debug, "got " .. #tags .. " from image " .. image.filename)
+
+      for _, image_tag in ipairs(tags) do
+        log.msg(log.debug, "checking tag " .. image_tag.name)
+
+        if string.match(image_tag.name, tag) then
+          fields = du.split(image_tag.name, "|")
+
+          if element <= #fields then
+            substitutes[var] = fields[element]
+          else
+            substitutes[var] = ""
+            log.msg(log.warn, "requested field for tag " .. tag .. " doesn't exist")
+          end
+
+          log.msg(log.info, "set substitute for " .. var .. " to " .. fields[element])
+
+        end
+      end
+    end
+  end
+  log.log_level(old_log_level)
+end
+
+-- convert image.exif_datetime_taken to system time
+
+local function exiftime2systime(exiftime)
+  local yr,mo,dy,h,m,s = string.match(exiftime, "(%d-):(%d-):(%d-) (%d-):(%d-):(%d+)")
+  return(os.time{year=yr, month=mo, day=dy, hour=h, min=m, sec=s})
+end
+
+-- build the argument substitution list from each image
+
+function dtutils_string.build_substition_list(image, sequence, variable_string, username, pic_folder, home, desktop)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  -- is time millisecond aware?  Implemented in API 9.1.0
+
+  local is_api_9_1 = true
+  if dt.configuration.api_version_string < "9.1.0" then
+    is_api_9_1 = false 
+  end
+
+  local datetime = os.date("*t")
+  local long_month = os.date("%B")
+  local short_month = os.date("%b")
+  local user_name = username or USER
+  local pictures_folder = pic_folder or PICTURES
+  local home_folder = home or HOME
+  local desktop_folder = desktop or DESKTOP
+
+  local labels = get_colorlabels(image)
+
+  local eyear, emon, eday, ehour, emin, esec, emsec
+  if dt.preferences.read("darktable", "lighttable/ui/milliseconds", "bool") and is_api_9_1 then
+    eyear, emon, eday, ehour, emin, esec, emsec = 
+      string.match(image.exif_datetime_taken, "(%d+):(%d+):(%d+) (%d+):(%d+):(%d+)%.(%d+)$")
+  else
+    emsec = "0"
+    eyear, emon, eday, ehour, emin, esec = 
+      string.match(image.exif_datetime_taken, "(%d+):(%d+):(%d+) (%d+):(%d+):(%d+)$")
+  end
+
+  local version_multi = #image:get_group_members() > 1 and image.version or ""
+
+  local replacements = {image.film.path,                       -- ROLL.NAME
+                        image.path,                            -- FILE.FOLDER
+                        image.filename,                        -- FILE.NAME
+                        dtutils_string.get_filetype(image.filename),-- FILE.EXTENSION
+                        image.id,                              -- ID
+                        image.duplicate_index,                 -- VERSION
+                        version_multi,                         -- VERSION.IF_MULTI
+                        image.version_name,                    -- VERSION.NAME
+                        dt.configuration.version,              -- DARKTABLE.VERSION
+                        "",                                    -- DARKTABLE.NAME
+                        string.format("%04d", sequence),       -- SEQUENCE
+                        image.width,                           -- WIDTH.SENSOR
+                        image.height,                          -- HEIGHT.SENSOR
+                        is_api_9_1 and image.p_width or "",    -- WIDTH.RAW
+                        is_api_9_1 and image.p_height or "",   -- HEIGHT.RAW
+                        is_api_9_1 and image.final_width or "",  -- WIDTH.CROP
+                        is_api_9_1 and image.final_height or "", -- HEIGHT.CROP
+                        is_api_9_1 and image.final_width or "",  -- WIDTH.EXPORT
+                        is_api_9_1 and image.final_height or "", -- HEIGHT.EXPORT
+                        "",                                    -- WIDTH.MAX   -- from export module
+                        "",                                    -- HEIGHT.MAX  -- from export module
+                        string.format("%4d", datetime.year),   -- YEAR
+                        string.sub(datetime.year, 3),          -- YEAR.SHORT
+                        string.format("%02d", datetime.month), -- MONTH
+                        long_month,                            -- MONTH.LONG
+                        short_month,                           -- MONTH.SHORT
+                        string.format("%02d", datetime.day),   -- DAY
+                        string.format("%02d", datetime.hour),  -- HOUR
+                        string.format("%02d", datetime.min),   -- MINUTE
+                        string.format("%02d", datetime.sec),   -- SECOND
+                        0,                                     -- MSEC
+                        eyear,                                 -- EXIF.YEAR
+                        string.sub(eyear, 3),                  -- EXIF.YEAR.SHORT
+                        emon,                                  -- EXIF.MONTH
+                        os.date("%B", exiftime2systime(image.exif_datetime_taken)), -- EXIF.MONTH.LONG
+                        os.date("%b", exiftime2systime(image.exif_datetime_taken)), -- EXIF.MONTH.SHORT
+                        eday,                                  -- EXIF.DAY
+                        ehour,                                 -- EXIF.HOUR
+                        emin,                                  -- EXIF.MINUTE
+                        esec,                                  -- EXIF.SECOND
+                        emsec,                                 -- EXIF.MSEC
+                        "",                                    -- EXIF.DATE.REGIONAL - wont be implemented
+                        "",                                    -- EXIF.TIME.REGIONAL - wont be implemented
+                        string.format("%d", image.exif_iso),   -- EXIF.ISO
+                        string.format("%.0f", 1./image.exif_exposure), -- EXIF.EXPOSURE
+                        image.exif_exposure_bias,              -- EXIF.EXPOSURE.BIAS
+                        string.format("%.01f", image.exif_aperture), -- EXIF.APERTURE
+                        string.format("%.01f", image.exif_crop),-- EXIF.CROP_FACTOR
+                        string.format("%.0f", image.exif_focal_length), -- EXIF.FOCAL.LENGTH
+                        string.format("%.0f", image.exif_focal_length * image.exif_crop), -- EXIF.FOCAL.LENGTH.EQUIV
+                        image.exif_focus_distance,             -- EXIF.FOCUS.DISTANCE
+                        "",                                    -- IMAGE.EXIF
+                        image.longitude or "",                 -- LONGITUDE
+                        image.latitude or "",                  -- LATITUDE
+                        image.elevation or "",                 -- ELEVATION
+                        "",                                    -- GPS.LOCATION - wont be implemented
+                        image.rating,                          -- STARS
+                        "",                                    -- RATING.ICONS - wont be implemented
+                        labels,                                -- LABELS
+                        "",                                    -- LABELS.ICONS - wont be implemented
+                        image.exif_maker,                      -- MAKER
+                        image.exif_model,                      -- MODEL
+                        image.exif_lens,                       -- LENS
+                        image.title,                           -- TITLE
+                        image.description,                     -- DESCRIPTION
+                        image.creator,                         -- CREATOR
+                        image.publisher,                       -- PUBLISHER
+                        image.rights,                          -- RIGHTS
+                        "",                                    -- TAGS - wont be implemented
+                        "",                                    -- SIDECAR.TXT - wont be implemented
+                        pictures_folder,                       -- FOLDER.PICTURES
+                        home_folder,                           -- FOLDER.HOME
+                        desktop_folder,                        -- FOLDER.DESKTOP
+                        "",                                    -- OPENCL.ACTIVATED - wont be implemented
+                        user_name,                             -- USERNAME
+                        "",                                    -- NL - wont be implemented
+                        ""                                     -- JOBCODE - wont be implemented
+  }
+
+  -- populate the substitution list
+
+  for i = 1, #PLACEHOLDERS, 1 do 
+    substitutes[PLACEHOLDERS[i]] = replacements[i] 
+    log.msg(log.info, "setting " .. PLACEHOLDERS[i] .. " to " .. tostring(replacements[i]))
+  end
+
+  -- do category substitutions separately
+
+  build_category_substitution_list(image, variable_string)
+
+  log.log_level(old_log_level)
+end
+
+-- handle different versions of names
+
+local function check_legacy_vars(var_name)
+  local var = var_name
+
+  if string.match(var, "_") then
+    var = string.gsub(var, "_", ".")
+  end
+
+  if string.match(var, "^HOME$") then var = "FOLDER.HOME" end
+  if string.match(var, "^PICTURES.FOLDER$") then var = "FOLDER.PICTURES" end
+  if string.match(var, "^DESKTOP$") then var = "FOLDER.DESKTOP" end
+
+  return var 
+end
+
+-- get the substitution and do any string manipulations requested
+
+local function treat(var_string)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  local ret_val = ""
+
+  -- remove the var from the string
+  local var = string.match(var_string, "[%a%._]+")
+
+  var = check_legacy_vars(var)
+  log.msg(log.info, "var_string is " .. tostring(var_string) .. " and var is " .. tostring(var))
+
+  if string.match(var_string, "CATEGORY%d") or string.match(var_string, "CATEGORY%[") then
+    log.msg(log.info, "substituting for " .. var_string)
+    ret_val = substitutes[var_string]
+    log.msg(log.info, "ret_val is " .. ret_val)
+
+  elseif string.match(var_string, "SEQUENCE%[") then
+    local start, width = string.match(var_string, "(%d+),(%d)")
+    local seq_val = tonumber(substitutes[var])
+    local pat = "%0" .. width .. "d"
+    substitutes[var_string] = string.format(pat, start + (seq_val - 1))
+    ret_val = substitutes[var_string]
+
+  else
+    ret_val = substitutes[var]
+  end
+
+  local valid_var = false 
+
+  if ret_val then
+    valid_var = true 
+  end
+
+  if not valid_var then
+    log.msg(log.error, "variable " .. var .. " is not an allowed variable, returning empty value")
+    log.log_level(old_log_level)
+    return ""
+  end
+
+  -- string modifications
+
+  local args = string.gsub(var_string, var, "")
+  log.msg(log.info, "args is " .. tostring(args))
+
+  if string.len(args) > 0 then
+
+    if string.match(args, '^%^%^') then
+      ret_val = string.upper(ret_val)
+
+    elseif string.match(args, "^%^") then
+      ret_val = string.gsub(ret_val, "^%a", string.upper, 1)
+
+    elseif string.match(args, "^,,") then
+      ret_val = string.lower(ret_val)
+
+    elseif string.match(args, "^,") then
+      ret_val = string.gsub(ret_val, "^%a", string.lower, 1)
+
+    elseif string.match(args, "^:%-?%d+:%-?%d+") then
+
+      local soffset, slen = string.match(args, ":(%-?%d+):(%-?%d+)")
+      log.msg(log.info, "soffset is " .. soffset .. " and slen is " .. slen)
+
+      if tonumber(soffset) >= 0 then
+        soffset = soffset + 1
+      end
+      log.msg(log.info, "soffset is " .. soffset .. " and slen is " .. slen)
+
+      if tonumber(soffset) < 0 and tonumber(slen) < 0 then
+        local temp = soffset
+        soffset = slen 
+        slen = temp 
+      end
+      log.msg(log.info, "soffset is " .. soffset .. " and slen is " .. slen)
+
+      ret_val = string.sub(ret_val, soffset, slen)
+      log.msg(log.info, "ret_val is " .. ret_val)
+
+    elseif string.match(args, "^:%-?%d+") then
+
+      local soffset= string.match(args, ":(%-?%d+)")
+      if tonumber(soffset) >= 0 then
+        soffset = soffset + 1
+      end
+      ret_val = string.sub(ret_val, soffset, -1)
+
+    elseif string.match(args, "^-%$%(.-%)") then
+
+      local replacement = string.match(args, "-%$%(([%a%._]+)%)")
+      replacement = check_legacy_vars(replacement)
+      if string.len(ret_val) == 0 then
+        ret_val = substitutes[replacement]
+      end
+
+    elseif string.match(args, "^-.+$") then
+
+      local replacement = string.match(args, "-(.+)$")
+      if string.len(ret_val) == 0 then
+        ret_val = replacement
+      end
+
+    elseif string.match(args, "^+.+") then
+
+      local replacement = string.match(args, "+(.+)")
+      if string.len(ret_val) > 0 then
+        ret_val = replacement
+      end
+
+    elseif string.match(args, "^#.+") then
+
+      local pattern = string.match(args, "#(.+)")
+      log.msg(log.info, "pattern to remove is " .. tostring(pattern))
+      ret_val = string.gsub(ret_val, "^" .. dtutils_string.sanitize_lua(pattern), "")
+
+    elseif string.match(args, "^%%.+") then
+
+      local pattern = string.match(args, "%%(.+)")
+      ret_val = string.gsub(ret_val, pattern .. "$", "")
+
+    elseif string.match(args, "^//.-/.+") then
+
+      local pattern, replacement = string.match(args, "//(.-)/(.+)")
+      ret_val = string.gsub(ret_val, pattern, replacement)
+
+     elseif string.match(args, "^/#.+/.+") then
+
+      local pattern, replacement = string.match(args, "/#(.+)/(.+)")
+      ret_val = string.gsub(ret_val, "^" .. pattern, replacement, 1)
+
+    elseif string.match(args, "^/%%.-/.+") then
+
+      local pattern, replacement = string.match(args, "/%%(.-)/(.+)")
+      ret_val = string.gsub(ret_val, pattern .. "$", replacement)
+
+    elseif string.match(args, "^/.-/.+") then
+
+      log.msg(log.info, "took replacement branch")
+      local pattern, replacement = string.match(args, "/(.-)/(.+)")
+      ret_val = string.gsub(ret_val, pattern, replacement, 1)
+    end
+
+  end
+  log.log_level(old_log_level)
+  return ret_val
+end
+
+dtutils_string.libdoc.functions["substitute_list"] = {
+  Name = [[substitute_list]],
+  Synopsis = [[Replace variables in a string with their computed values]],
+  Usage = [[local ds = require "lib/dtutils.string"
+    local result = ds.substitute_list(str)
+      str - string - the string containing the variables to be substituted for]],
+  Description = [[substitute_list replaces the variables in the supplied string with
+    values computed in build_substitution_list().]],
+  Return_Value = [[result - string - the input string with values substituted for the variables]],
+  Limitations = [[]],
+  Example = [[]],
+  See_Also = [[https://docs.darktable.org/usermanual/4.6/en/special-topics/variables/]],
+  Reference = [[]],
+  License = [[]],
+  Copyright = [[]],
+}
+
+function dtutils_string.substitute_list(str)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  -- replace the substitution variables in a string
+  for match in string.gmatch(str, "%$%(.-%)?%)") do
+
+    local var = string.match(match, "%$%((.-%)?)%)")
+
+    local treated_var = treat(var)
+    log.msg(log.info, "var is " .. var .. " and treated var is " .. tostring(treated_var))
+
+    str = string.gsub(str, "%$%(".. dtutils_string.sanitize_lua(var) .."%)", tostring(treated_var))
+    log.msg(log.info, "str after replacement is " .. str)
+
+  end
+
+  log.log_level(old_log_level)
+
+  return str
+end
+
+dtutils_string.libdoc.functions["clear_substitute_list"] = {
+  Name = [[clear_substitute_list]],
+  Synopsis = [[Clear the computed list of variable substitution values]],
+  Usage = [[local ds = require "lib/dtutils.string"
+    ds.clear_substitute_list()]],
+  Description = [[clear_substitute_list resets the list of variable replacement values]],
+  Return_Value = [[]],
+  Limitations = [[]],
+  Example = [[]],
+  See_Also = [[]],
+  Reference = [[]],
+  License = [[]],
+  Copyright = [[]],
+}
+
+function dtutils_string.clear_substitute_list()
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  substitutes = {}
+  category_substitutes = {}
+
+  log.log_level(old_log_level)
+end
+
+dtutils_string.libdoc.functions["substitute"] = {
+  Name = [[substitute]],
+  Synopsis = [[Perform all the variable substitution steps with one function call]],
+  Usage = [[local ds = require "lib/dtutils.string"
+    ds.substitute(image, sequence, variable_string, [username], [pic_folder], [home], [desktop])
+      image - dt_lua_image_t - the image being processed
+      sequence - integer - the number of the image being processed (exported)
+      variable_string - string - the substitution variable string
+      [username] - string - optional - user name.  Will be determined if not supplied
+      [pic_folder] - string - optional - pictures folder name.  Will be determined if not supplied
+      [home] - string - optional - home directory.  Will be determined if not supplied
+      [desktop] - string - optional - desktop directory.  Will be determined if not supplied]],
+  Description = [[substitute initializes the substitution list by calling clear_substitute_list(),
+    then builds the substitutions by calling build_substitute_list() and finally does the 
+    substitution by calling substitute_list(), then returns the result string.]],
+  Return_Value = [[result - string - the input string with values substituted for the variables]],
+  Limitations = [[]],
+  Example = [[]],
+  See_Also = [[https://docs.darktable.org/usermanual/4.6/en/special-topics/variables/]],
+  Reference = [[]],
+  License = [[]],
+  Copyright = [[]],
+}
+
+function dtutils_string.substitute(image, sequence, variable_string, username, pic_folder, home, desktop)
+  local old_log_level = log.log_level()
+  log.log_level(dtutils_string.log_level)
+
+  dtutils_string.clear_substitute_list()
+
+  dtutils_string.build_substitute_list(image, sequence, variable_string, username, pic_folder, home, desktop)  
+
+  local str = dtutils_string.substitute_list(variable_string)
+
+  log.log_level(old_log_level)
+
+  return str
+end
+
 
 
 return dtutils_string

lib/dtutils/system.lua

@@ -1,6 +1,7 @@
 local dtutils_system = {}
 
 local dt = require "darktable"
+local ds = require "lib/dtutils.string"
 
 dtutils_system.libdoc = {
   Name = [[dtutils.system]],
@@ -118,6 +119,7 @@ dtutils_system.libdoc.functions["launch_default_app"] = {
   License = [[]],
   Copyright = [[]],
 }
+
 function dtutils_system.launch_default_app(path) 
   local open_cmd = "xdg-open "
   if (dt.configuration.running_os == "windows") then
@@ -128,5 +130,4 @@ function dtutils_system.launch_default_app(path)
   return dtutils_system.external_command(open_cmd .. path)
 end
 
-
 return dtutils_system

official/check_for_updates.lua

@@ -34,10 +34,25 @@ local cjson = require "cjson"
 
 du.check_min_api_version("2.0.0", "check_for_updates") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("check_for_updates", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "check_for_updates",
+  purpose = _("check for newer darktable releases"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/check_for_updates"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again

official/copy_paste_metadata.lua

@@ -27,14 +27,27 @@ USAGE
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "copy_paste_metadata")
 
+dt.gettext.bindtextdomain("copy_paste_metadata", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "copy_paste_metadata",
+  purpose = _("adds keyboard shortcuts and buttons to copy/paste metadata between images"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/copy_paste_metadata"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -58,13 +71,6 @@ local publisher = ""
 local rights = ""
 local tags = {}
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("copy_paste_metadata",dt.configuration.config_dir.."/lua/locale/")
-
-local function _(msgid)
-    return gettext.dgettext("copy_paste_metadata", msgid)
-end
-
 local function copy(image)
   if not image then
     have_data = false
@@ -147,13 +153,13 @@ dt.gui.libs.image.register_action(
 dt.register_event(
   "capmd1", "shortcut",
   function(event, shortcut) copy(dt.gui.action_images[1]) end,
-  "copy metadata"
+  _("copy metadata")
 )
 
 dt.register_event(
   "capmd2", "shortcut",
   function(event, shortcut) paste(dt.gui.action_images) end,
-  "paste metadata"
+  _("paste metadata")
 )
 
 script_data.destroy = destroy

official/delete_long_tags.lua

@@ -33,10 +33,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("2.0.0", "delete_long_tags") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("delete_long_tags", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "delete_long_tags",
+  purpose = _("delete all tags longer than a set length"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/delete_long_tags"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -59,7 +74,7 @@ local long_tags = {}
 for _,t in ipairs(dt.tags) do
   local len = #t.name
   if len > max_length then
-    print("deleting tag `"..t.name.."' (length: "..len..")")
+    dt.print_log("deleting tag `"..t.name.."' (length: "..len..")")
     table.insert(long_tags, t.name)
   end
 end

official/delete_unused_tags.lua

@@ -37,10 +37,25 @@ local function destroy()
   -- noting to destroy
 end
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("delete_unused_tags", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "delete_unused_tags",
+  purpose = _("delete unused tags"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/delete_unused_tags"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -56,7 +71,7 @@ for _, t in ipairs(dt.tags) do
 end
 
 for _,name in pairs(unused_tags) do
-  print("deleting tag `" .. name .. "'")
+  dt.print_log("deleting tag `" .. name .. "'")
   tag = dt.tags.find(name)
   tag:delete()
 end

official/enfuse.lua

@@ -39,31 +39,37 @@ local dtsys = require "lib/dtutils.system"
 
 local PS = dt.configuration.running_os == "windows" and "\\" or "/"
 
-local gettext = dt.gettext
+local gettext = dt.gettext.gettext
 
 du.check_min_api_version("7.0.0", "enfuse")
 
+dt.gettext.bindtextdomain("enfuse", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "enfuse",
+  purpose = _("exposure blend images"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/enfuse"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
 script_data.show = nil -- only required for libs since the destroy_method only hides them
 
--- Tell gettext where to find the .mo file translating messages for a particular domain
-gettext.bindtextdomain("enfuse",dt.configuration.config_dir..PS .. "lua" .. PS .. "locale" .. PS)
-
 local enf = {}
 enf.event_registered = false
 enf.module_installed = false
 enf.lib_widgets = {}
 
-local function _(msgid)
-    return gettext.dgettext("enfuse", msgid)
-end
-
 local function install_module()
   if not enf.module_installed then
     dt.register_lib(
@@ -132,7 +138,7 @@ if enfuse_installed then
     exposure_mu = dt.new_widget("slider")
     {
       label = "exposure mu",
-      tooltip = "center also known as MEAN of Gaussian weighting function (0 <= MEAN <= 1); default: 0.5",
+      tooltip = _("center also known as mean of gaussian weighting function (0 <= mean <= 1); default: 0.5"),
       hard_min = 0,
       hard_max = 1,
       value = dt.preferences.read("enfuse", "exposure_mu", "float")
@@ -141,7 +147,7 @@ if enfuse_installed then
     exposure_mu = dt.new_widget("slider")
     {
       label = "exposure optimum",
-      tooltip = "optimum exposure value, usually the maximum of the weighting function (0 <= OPTIMUM <=1); default 0.5",
+      tooltip = _("optimum exposure value, usually the maximum of the weighting function (0 <= optimum <=1); default 0.5"),
       hard_min = 0,
       hard_max = 1,
       value = dt.preferences.read("enfuse", "exposure_optimum", "float")
@@ -151,7 +157,7 @@ if enfuse_installed then
   local depth = dt.new_widget("combobox")
   {
     label = "depth",
-    tooltip = "the number of bits per channel of the output image",
+    tooltip = _("the number of bits per channel of the output image"),
     value = dt.preferences.read("enfuse", "depth", "integer"),
     changed_callback = function(w) dt.preferences.write("enfuse", "depth", "integer", w.selected) end,
     "8", "16", "32"
@@ -160,14 +166,14 @@ if enfuse_installed then
   local blend_colorspace = dt.new_widget("combobox")
   {
     label = "blend colorspace",
-    tooltip = "Force blending in selected colorspace",
+    tooltip = _("force blending in selected colorspace"),
     changed_callback = function(w) dt.preferences.write("enfuse", "blend_colorspace", "string", w.selected) end,
     "", "identity", "ciecam"
   }
 
   local enfuse_button = dt.new_widget("button")
   {
-    label = enfuse_installed and "run enfuse" or "enfuse not installed",
+    label = enfuse_installed and _("run enfuse") or _("enfuse not installed"),
     clicked_callback = function ()
       -- remember exposure_mu
       -- TODO: find a way to save it whenever the value changes
@@ -185,7 +191,7 @@ if enfuse_installed then
       end
       local f = io.open(response_file, "w")
       if not f then
-        dt.print(string.format(_("Error writing to `%s`"), response_file))
+        dt.print(string.format(_("error writing to '%s'"), response_file))
         os.remove(response_file)
         return
       end
@@ -208,9 +214,9 @@ if enfuse_installed then
           if dt.configuration.running_os == "windows" then
             tmp_exported = dt.configuration.tmp_dir .. tmp_exported -- windows os.tmpname() defaults to root directory
           end
-              dt.print(string.format(_("Converting raw file '%s' to tiff..."), i.filename)) 
+              dt.print(string.format(_("converting raw file '%s' to tiff..."), i.filename)) 
           tiff_exporter:write_image(i, tmp_exported, false)
-          dt.print_log(string.format("Raw file '%s' converted to '%s'", i.filename, tmp_exported))
+          dt.print_log(string.format("raw file '%s' converted to '%s'", i.filename, tmp_exported))
 
           cnt = cnt + 1
           f:write(tmp_exported.."\n")
@@ -218,14 +224,14 @@ if enfuse_installed then
           
         -- other images will be skipped
         else
-          dt.print(string.format(_("Skipping %s..."), i.filename))
+          dt.print(string.format(_("skipping %s..."), i.filename))
           n_skipped = n_skipped + 1
         end
       end
       f:close()
       -- bail out if there is nothing to do
       if cnt == 0 then
-        dt.print(_("No suitable images selected, nothing to do for enfuse"))
+        dt.print(_("no suitable images selected, nothing to do for enfuse"))
         os.remove(response_file)
         return
       end
@@ -251,7 +257,7 @@ if enfuse_installed then
                       ..blend_colorspace_option
                       .." -o \""..output_image.."\" \"@"..response_file.."\""
       if dtsys.external_command( command) > 0 then
-        dt.print(_("Enfuse failed, see terminal output for details"))
+        dt.print(_("enfuse failed, see terminal output for details"))
         os.remove(response_file)
         return
       end
@@ -299,7 +305,7 @@ if enfuse_installed then
 else
   dt.print_error("enfuse executable not found")
   error("enfuse executable not found")
-  dt.print(_("Could not find enfuse executable. Not loading enfuse exporter..."))
+  dt.print(_("could not find enfuse executable, not loading enfuse exporter..."))
 end
 
 script_data.destroy = destroy

official/generate_image_txt.lua

@@ -38,12 +38,27 @@ local dt = require "darktable"
 local du = require "lib/dtutils"
 require "darktable.debug"
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("generate_image_txt", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 du.check_min_api_version("7.0.0", "generate_image_txt") 
 
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "generate_image_txt",
+  purpose = _("overlay metadata on the selected image(s)"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/generate_image_txt"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -52,21 +67,21 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 dt.preferences.register("generate_image_txt",
                         "enabled",
                         "bool",
-                        "create txt sidecars to display with images",
-                        "the txt files created get shown when the lighttable is zoomed in to one image. also enable the txt overlay setting in the gui tab",
+                        _("create txt sidecars to display with images"),
+                        _("the txt files created get shown when the lighttable is zoomed in to one image. also enable the txt overlay setting in the gui tab"),
                         false)
 
 dt.preferences.register("generate_image_txt",
                         "command",
                         "string",
-                        "command to generate the txt sidecar",
-                        "the output of this command gets written to the txt file. use $(FILE_NAME) for the image file",
+                        _("command to generate the txt sidecar"),
+                        _("the output of this command gets written to the txt file. use $(FILE_NAME) for the image file"),
                         "exiv2 $(FILE_NAME)")
 
 
 local check_command = function(command)
   if not command:find("$(FILE_NAME)", 1, true) then
-    dt.print("the command for txt sidecars looks bad. better check the preferences")
+    dt.print(_("the command for txt sidecars looks bad. better check the preferences"))
   end
 end
 

official/image_path_in_ui.lua

@@ -33,10 +33,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "image_path_in_ui") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("image_path_in_ui", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msgid)
+    return gettext(msgid)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "image_path_in_ui",
+  purpose = _("print the image path in the UI"),
+  author = "Jérémy Rosen",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/image_path_in_ui"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again

official/import_filter_manager.lua

@@ -32,20 +32,42 @@ USAGE
 
 local dt = require "darktable"
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("import_filter_manager", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
+local script_data = {}
+
+script_data.metadata = {
+  name = "import_filter_manager",
+  purpose = _("manage import filters"),
+  author = "Tobias Ellinghaus",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/import_filter_manager"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 local import_filter_list = {}
 local n_import_filters = 1
 
 -- allow changing the filter from the preferences
 dt.preferences.register("import_filter_manager", "active_filter", "string",
-  "import filter", "the name of the filter used for importing images", "")
+  _("import filter"), _("the name of the filter used for importing images"), "")
 
 
 -- the dropdown to select the active filter from the import dialog
 local filter_dropdown = dt.new_widget("combobox")
 {
-  label = "import filter",
+  label = _("import filter"),
   editable = false,
-  tooltip = "import filters are applied after completion of the import dialog",
+  tooltip = _("import filters are applied after completion of the import dialog"),
 
   changed_callback = function(widget)
     dt.preferences.write("import_filter_manager", "active_filter", "string", widget.value)
@@ -75,6 +97,12 @@ dt.register_import_filter = function(name, callback)
   if name == active_filter then filter_dropdown.value = n_import_filters end
 end
 
+local function destroy()
+  --noting to destroy
+end
 
+script_data.destroy = destroy
+
+return script_data
 -- vim: shiftwidth=2 expandtab tabstop=2 cindent
 -- kate: tab-indents: off; indent-width 2; replace-tabs on; remove-trailing-space on;

official/import_filters.lua

@@ -30,11 +30,33 @@ USAGE
 
 local dt = require "darktable"
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("import_filters", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
+local script_data = {}
+
+script_data.metadata = {
+  name = "import_filters",
+  purpose = _("import filtering"),
+  author = "Tobias Ellinghaus & Christian Mandel",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/import_filters"
+}
+
+script_data.destroy = nil -- function to destory the script
+script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
+script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
+script_data.show = nil -- only required for libs since the destroy_method only hides them
+
 -- we get fed a sorted list of filenames. just setting images to ignore to nil is enough
 
 -- ignore jpeg
 dt.register_import_filter("ignore jpegs", function(event, images)
-  dt.print_error("ignoring all jpegs")
+  dt.print_log("ignoring all jpegs")
   for i, img in ipairs(images) do
     local extension = img:match("[^.]*$"):upper()
     if (extension == "JPG") or (extension == "JPEG") then
@@ -88,5 +110,13 @@ dt.register_import_filter("prefer raw over jpeg", function(event, images)
 
 end)
 
+local function destroy()
+  -- nothing to destroy
+end
+
+script_data.destroy = destroy
+
+return script_data
+
 -- vim: shiftwidth=2 expandtab tabstop=2 cindent
 -- kate: tab-indents: off; indent-width 2; replace-tabs on; remove-trailing-space on;

official/save_selection.lua

@@ -38,10 +38,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "save_selection") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("save_selection", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "save_selection",
+  purpose = _("shortcuts providing multiple selection buffers"),
+  author = "Jérémy Rosen",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/save_selection"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -61,16 +76,16 @@ for i = 1, buffer_count do
   local saved_selection
   dt.register_event("save_selection save " .. i, "shortcut", function()
     saved_selection = dt.gui.selection()
-  end, "save to buffer " .. i)
+  end, string.format(_("save to buffer %d"), i))
   dt.register_event("save_selection restore " .. i, "shortcut", function()
     dt.gui.selection(saved_selection)
-  end, "restore from buffer " .. i)
+  end, string.format(_("restore from buffer %d"), i))
 end
 
 local bounce_buffer = {}
 dt.register_event("save_selection switch", "shortcut", function()
   bounce_buffer = dt.gui.selection(bounce_buffer)
-end, "switch selection with temporary buffer")
+end, _("switch selection with temporary buffer"))
 
 script_data.destroy = destroy
 

official/selection_to_pdf.lua

@@ -38,10 +38,25 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("7.0.0", "selection_to_pdf")
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("selection_to_pdf", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+  return gettext(msg)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "selection_to_pdf",
+  purpose = _("generate a pdf file of selected images"),
+  author = "Jérémy Rosen & Pascal Obry",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/official/selection_to_pdf"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -49,16 +64,16 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 
 dt.preferences.register
    ("selection_to_pdf","Open with","string",
-    "a pdf viewer",
-    "Can be an absolute pathname or the tool may be in the PATH",
+    _("a pdf viewer"),
+    _("can be an absolute pathname or the tool may be in the PATH"),
     "xdg-open")
 
 local title_widget = dt.new_widget("entry") {
-    placeholder="Title"
+    placeholder = _("title")
 }
 local no_of_thumbs_widget = dt.new_widget("slider")
 {
-    label = "Thumbs per Line", 
+    label = _("thumbs per line"), 
     soft_min = 1,     -- The soft minimum value for the slider, the slider can't go beyond this point
     soft_max = 10,    -- The soft maximum value for the slider, the slider can't go beyond this point
     hard_min = 1,     -- The hard minimum value for the slider, the user can't manually enter a value beyond this point
@@ -66,10 +81,10 @@ local no_of_thumbs_widget = dt.new_widget("slider")
     value = 4         -- The current value of the slider
 }
 local widget = dt.new_widget("box") {
-    orientation=horizontal,
-    dt.new_widget("label"){label = "Title:"},
+    orientation = horizontal,
+    dt.new_widget("label"){label = _("title:")},
     title_widget,
-    dt.new_widget("label"){label = "Thumbnails per row:"},
+    dt.new_widget("label"){label = _("thumbnails per row:")},
     no_of_thumbs_widget
 }
 
@@ -116,7 +131,7 @@ local function destroy()
   dt.print_log("done destroying")
 end
 
-dt.register_storage("export_pdf","Export thumbnails to pdf",
+dt.register_storage(_("export_pdf"),_("export thumbnails to pdf"),
     nil,
     function(storage,image_table)
       local my_title = title_widget.text
@@ -163,7 +178,7 @@ dt.register_storage("export_pdf","Export thumbnails to pdf",
       local command = "pdflatex -halt-on-error -output-directory "..dir.." "..locfile
       local result = dt.control.execute(command)
       if result ~= 0 then
-        dt.print("Problem running pdflatex") -- this one is probably usefull to the user
+        dt.print(_("problem running pdflatex")) -- this one is probably usefull to the user
         error("Problem running "..command)
       end
 
@@ -173,7 +188,7 @@ dt.register_storage("export_pdf","Export thumbnails to pdf",
       command = command.." "..pdffile
       local result = dt.control.execute(command)
       if result ~= 0 then
-        dt.print("Problem running pdf viewer") -- this one is probably usefull to the user
+        dt.print(_("problem running pdf viewer")) -- this one is probably usefull to the user
         error("Problem running "..command)
       end
 

tools/executable_manager.lua

@@ -31,13 +31,29 @@
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
+local dtsys = require "lib/dtutils.system"
 
 du.check_min_api_version("7.0.0", "executable_manager")
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("executable_manager", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+    return gettext(msg)
+end
+
 -- return data structure for script_manager
 
 local script_data = {}
 
+script_data.metadata = {
+  name = "executable_manager",
+  purpose = _("manage the list of external executables used by the lua scripts"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/tools/executable_manager"
+}
+
 script_data.destroy = nil -- function to destory the script
 script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet
 script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
@@ -45,10 +61,6 @@ script_data.show = nil -- only required for libs since the destroy_method only h
 
 local PS = dt.configuration.running_os == "windows" and "\\" or "/"
 
-local gettext = dt.gettext
-
-gettext.bindtextdomain("executable_manager",dt.configuration.config_dir.."/lua/locale/")
-
 local exec_man = {} -- our own namespace
 exec_man.module_installed = false
 exec_man.event_registered = false
@@ -57,10 +69,6 @@ exec_man.event_registered = false
 -- F U N C T I O N S
 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 
-local function _(msg)
-    return gettext.dgettext("executable_manager", msg)
-end
-
 local function grep(file, pattern)
 
   local result = {}
@@ -100,13 +108,19 @@ local function update_combobox_choices(combobox, choice_table, selected)
 end
 
 local function install_module()
+  local panel = "DT_UI_CONTAINER_PANEL_LEFT_BOTTOM"
+  local panel_pos = 600
+  if dt.configuration.running_os == "windows" then
+    panel = "DT_UI_CONTAINER_PANEL_LEFT_CENTER"
+    panel_pos = 100
+  end
   if not exec_man.module_installed then
     dt.register_lib(
       "executable_manager",     -- Module name
       "executable manager",     -- Visible name
       true,                -- expandable
       false,               -- resetable
-      {[dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_LEFT_BOTTOM", 600}},   -- containers
+      {[dt.gui.views.lighttable] = {panel, panel_pos}},   -- containers
       dt.new_widget("box") -- widget
       {
         orientation = "vertical",
@@ -142,7 +156,7 @@ local matches = grep(DARKTABLERC, "executable_paths")
 -- check if we have something to manage and exit if not
 
 if #matches == 0 then
-  dt.print(_("No executable paths found, exiting..."))
+  dt.print(_("no executable paths found, exiting..."))
   return
 end
 
@@ -167,7 +181,7 @@ for i,exec in ipairs(exec_table) do
     editable = false
   }
   executable_path_widgets[exec] = dt.new_widget("file_chooser_button"){
-    title = _("select ") .. exec .. _(" executable"),
+    title = _(string.format("select %s executable", exec)),
     value = df.get_executable_path_preference(exec),
     is_directory = false,
     changed_callback = function(self)
@@ -210,7 +224,7 @@ for i,exec in ipairs(exec_table) do
     dt.new_widget("section_label"){label = _("reset")},
     dt.new_widget("button"){
       label = _("clear"),
-      tooltip = _("Clear path for ") .. exec,
+      tooltip = string.format(_("clear path for %s"), exec),
       clicked_callback = function()
         df.set_executable_path_preference(exec, "")
         executable_path_widgets[exec].value = ""

tools/gen_i18n_mo.lua

@@ -1,108 +0,0 @@
---[[
-    gen_18n_mo.lua - generate .mo files from .po files and put them in the correct place
-
-    Copyright (C) 2016,2018 Bill Ferguson <wpferguson@gmail.com>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-]]
---[[
-    gen_i18n_mo - generate translation files from the source and place them in the appropriate locale directory
-    
-    gen_i18n_mo finds all the .po files scattered throughout the script tree, compiles them into
-    .mo files and places them in the correct locale directory for use by the gettext tools.
-
-]]
-
-local dt = require "darktable"
-local du = require "lib/dtutils"
-local df = require "lib/dtutils.file"
-local log = require "lib/dtutils.log"
-local dtsys = require "lib/dtutils.system"
-
-du.check_min_api_version("5.0.0", "gen_I18n_mo")
-
-local function destroy()
-  -- nothing to destroy
-end
-
--- figure out the path separator
-
-local PS = dt.configuration.running_os == "windows" and "\\" or "/"
-
-local LUA_DIR = dt.configuration.config_dir .. PS .. "lua" .. PS
-local LOCALE_DIR = dt.configuration.config_dir .. PS .. "lua" .. PS .. "locale" .. PS
-
--- check if we have msgfmt
-
-local msgfmt_executable = df.check_if_bin_exists("msgfmt")
-
-if msgfmt_executable then
-
-  -- find the .po files
-
-  local find_cmd = "find -L " .. LUA_DIR .. " -name \\*.po -print"
-  if dt.configuration.running_os == "windows" then
-    find_cmd = "dir /b/s " .. LUA_DIR .. "\\*.po"
-  end
-
-  local output = io.popen(find_cmd)
-
-  -- for each .po file....
-
-  for line in output:lines() do
-    local fname = df.get_filename(line)
-
-    -- get the language used...  this depends on the file being named using
-    -- the convention /..../lang/LC_MESSAGES/file.po where lang is de_DE, fr_FR, etc.
-
-    local path_parts = du.split(line, PS)
-    local lang  = path_parts[#path_parts - 2]
-
-    -- ensure there is a destination directory for them
-
-    local mkdir_cmd = "mkdir -p "
-    if dt.configuration.running_os == "windows" then
-      mkdir_cmd = "mkdir "
-    end
-
-    if not df.check_if_file_exists(LOCALE_DIR .. lang .. PS .. "LC_MESSAGES") then
-      log.msg(log.info, "Creating locale", lang)
-      os.execute(mkdir_cmd .. LOCALE_DIR .. lang .. PS .. "LC_MESSAGES")
-    end
-
-    -- generate the mo file
-
-    fname = string.gsub(fname, ".po$", ".mo")
-    log.msg(log.info, "Compiling translation to", fname)
-    local result = os.execute(msgfmt_executable .. " -o " .. LOCALE_DIR .. lang .. PS .. "LC_MESSAGES" .. PS .. fname .. " " .. line)
-  end
-else
-  log.msg(log.screen, "ERROR: msgfmt executable not found.  Please install or specifiy location in preferences.")
-end
-dt.preferences.register("executable_paths", "msgfmt",  -- name
-  "file", -- type
-  'gen_i18n_mo: msgfmt location', -- label
-  'Install location of msgfmt. Requires restart to take effect.',  -- tooltip
-  "msgfmt",  -- default
-  dt.new_widget("file_chooser_button"){
-    title = "Select msgfmt[.exe] file",
-    value = "",
-    is_directory = false,
-  }
-)
-
-local script_data = {}
-script_data.destroy = destroy
-
-return script_data

tools/get_lib_manpages.lua

@@ -7,11 +7,20 @@
 local dt = require "darktable"
 local du = require "lib/dtutils"
 local df = require "lib/dtutils.file"
+local dtsys = require "lib/dtutils.system"
 local log = require "lib/dtutils.log"
 local libname = nil
 
 du.check_min_api_version("3.0.0", "get_lib_manpages") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("get_lib_manpages", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+    return gettext(msg)
+end
+
 local function destroy()
   -- nothing to destroy
 end
@@ -79,6 +88,14 @@ for line in output:lines() do
 end
 
 local script_data = {}
+
+script_data.metadata = {
+  name = "get_lib_manpages",
+  purpose = _("output the internal library documentation as man pages"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/tools/get_lib_manpages"
+}
+
 script_data.destroy = destroy
 
 return script_data

tools/get_libdoc.lua

@@ -6,9 +6,18 @@
 
 local dt = require "darktable"
 local du = require "lib/dtutils"
+local dtsys = require "lib/dtutils.system"
 
 du.check_min_api_version("3.0.0", "get_libdoc") 
 
+local gettext = dt.gettext.gettext
+
+dt.gettext.bindtextdomain("get_libdoc", dt.configuration.config_dir .."/lua/locale/")
+
+local function _(msg)
+    return gettext(msg)
+end
+
 local function destroy()
   -- nothing to destroy
 end
@@ -53,6 +62,14 @@ for line in output:lines() do
 end
 
 local script_data = {}
+
+script_data.metadata = {
+  name = "get_libdoc",
+  purpose = _("retrieve and print the documentation to the console"),
+  author = "Bill Ferguson <wpferguson@gmail.com>",
+  help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/tools/get_libdoc"
+}
+
 script_data.destroy = destroy
 
 return script_data