Fix: Handle \t when loading GS strings from savegame (#14180)

src/saveload/game_sl.cpp

@@ -121,7 +121,7 @@ static uint32_t _game_saveload_strings;
 class SlGameLanguageString : public DefaultSaveLoadHandler<SlGameLanguageString, LanguageStrings> {
 public:
 	inline static const SaveLoad description[] = {
-		SLEG_SSTR("string", _game_saveload_string, SLE_STR | SLF_ALLOW_CONTROL),
+		SLEG_SSTR("string", _game_saveload_string, SLE_STR | SLF_ALLOW_CONTROL | SLF_REPLACE_TABCRLF),
 	};
 	inline const static SaveLoadCompatTable compat_description = _game_language_string_sl_compat;
 

src/saveload/saveload.cpp

@@ -1066,6 +1066,9 @@ static void SlStdString(void *ptr, VarType conv)
 			if ((conv & SLF_ALLOW_NEWLINE) != 0) {
 				settings.Set(StringValidationSetting::AllowNewline);
 			}
+			if ((conv & SLF_REPLACE_TABCRLF) != 0) {
+				settings.Set(StringValidationSetting::ReplaceTabCrNlWithSpace);
+			}
 			StrMakeValidInPlace(*str, settings);
 		}
 

src/saveload/saveload.h

@@ -691,6 +691,7 @@ enum VarTypes : uint16_t {
 	 * Flags directing saving/loading of a variable */
 	SLF_ALLOW_CONTROL   = 1 << 8, ///< Allow control codes in the strings.
 	SLF_ALLOW_NEWLINE   = 1 << 9, ///< Allow new lines in the strings.
+	SLF_REPLACE_TABCRLF = 1 << 10, ///< Replace tabs, cr and lf in the string with spaces.
 };
 
 typedef uint32_t VarType;