From 3e37c06b84e9f07a0f5586af352cefa4ce2ee8f3 Mon Sep 17 00:00:00 2001
From: Bill Ferguson <wpferguson@gmail.com>
Date: Sat, 13 Jul 2024 14:44:01 -0400
Subject: [PATCH] lib/dtutils/string - Added check to determine if string needs
 to be                      sanitized.  Check looks for unprintable characters
                      and spaces.

---
 lib/dtutils/string.lua | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/lib/dtutils/string.lua b/lib/dtutils/string.lua
index 926c667..d64a95a 100644
--- a/lib/dtutils/string.lua
+++ b/lib/dtutils/string.lua
@@ -298,16 +298,32 @@ local function _sanitize_windows(str)
   end
 end
 
+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 dt.configuration.running_os == "windows" then
-    log.log_level(old_log_level)
-    return _sanitize_windows(str)
+  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
-    log.log_level(old_log_level)
-    return _sanitize_posix(str)
+    sanitized_str = str
   end
+  log.log_level(old_log_level)
+  return sanitized_str
 end
 
 dtutils_string.libdoc.functions["sanitize_lua"] = {