Add: Translatable list separator. (#13149)

Some languages should use a separator other than ", " to separate list items, so it is now a translatable string.

src/cargotype.cpp

@@ -268,6 +268,8 @@ uint64_t CargoSpec::WeightOfNUnitsInTrain(uint32_t n) const
  */
 std::optional<std::string> BuildCargoAcceptanceString(const CargoArray &acceptance, StringID label)
 {
+	std::string_view list_separator = GetListSeparator();
+
 	/* Cargo acceptance is displayed in a extra multiline */
 	std::stringstream line;
 	line << GetString(label);
@@ -277,7 +279,7 @@ std::optional<std::string> BuildCargoAcceptanceString(const CargoArray &acceptan
 		CargoID cid = cs->Index();
 		if (acceptance[cid] > 0) {
 			/* Add a comma between each item. */
-			if (found) line << ", ";
+			if (found) line << list_separator;
 			found = true;
 
 			/* If the accepted value is less than 8, show it in 1/8:ths */

src/lang/english.txt

@@ -266,6 +266,8 @@ STR_UNITS_MINUTES                                               :{NUM}{NBSP}minu
 STR_UNITS_YEARS                                                 :{NUM}{NBSP}year{P "" s}
 STR_UNITS_PERIODS                                               :{NUM}{NBSP}period{P "" s}
 
+STR_LIST_SEPARATOR                                              :,{SPACE}
+
 # Common window strings
 STR_LIST_FILTER_TITLE                                           :{BLACK}Filter:
 STR_LIST_FILTER_OSKTITLE                                        :{BLACK}Enter one or more keywords to filter the list for

src/network/network_content_gui.cpp

@@ -739,6 +739,7 @@ public:
 		SetDParam(0, this->selected->filesize);
 		tr.top = DrawStringMultiLine(tr, STR_CONTENT_DETAIL_FILESIZE);
 
+		std::string_view list_separator = GetListSeparator();
 		if (!this->selected->dependencies.empty()) {
 			/* List dependencies */
 			std::string buf;
@@ -749,7 +750,7 @@ public:
 					const ContentInfo *ci = *iter;
 					if (ci->id != cid) continue;
 
-					if (!buf.empty()) buf += ", ";
+					if (!buf.empty()) buf += list_separator;
 					buf += (*iter)->name;
 					break;
 				}
@@ -762,7 +763,7 @@ public:
 			/* List all tags */
 			std::string buf;
 			for (auto &tag : this->selected->tags) {
-				if (!buf.empty()) buf += ", ";
+				if (!buf.empty()) buf += list_separator;
 				buf += tag;
 			}
 			SetDParamStr(0, buf);
@@ -778,7 +779,7 @@ public:
 			for (const ContentInfo *ci : tree) {
 				if (ci == this->selected || ci->state != ContentInfo::SELECTED) continue;
 
-				if (!buf.empty()) buf += ", ";
+				if (!buf.empty()) buf += list_separator;
 				buf += ci->name;
 			}
 			if (!buf.empty()) {

src/roadveh_gui.cpp

@@ -51,12 +51,13 @@ void DrawRoadVehDetails(const Vehicle *v, const Rect &r)
 		}
 
 		std::string capacity = GetString(STR_VEHICLE_DETAILS_TRAIN_ARTICULATED_RV_CAPACITY);
+		std::string_view list_separator = GetListSeparator();
 
 		bool first = true;
 		for (const CargoSpec *cs : _sorted_cargo_specs) {
 			CargoID cid = cs->Index();
 			if (max_cargo[cid] > 0) {
-				if (!first) capacity += ", ";
+				if (!first) capacity += list_separator;
 
 				SetDParam(0, cid);
 				SetDParam(1, max_cargo[cid]);

src/strings.cpp

@@ -214,12 +214,22 @@ struct LoadedLanguagePack {
 
 	std::array<uint, TEXT_TAB_END> langtab_num;   ///< Offset into langpack offs
 	std::array<uint, TEXT_TAB_END> langtab_start; ///< Offset into langpack offs
+
+	std::string list_separator; ///< Current list separator string.
 };
 
 static LoadedLanguagePack _langpack;
 
 static bool _scan_for_gender_data = false;  ///< Are we scanning for the gender of the current string? (instead of formatting it)
 
+/**
+ * Get the list separator string for the current language.
+ * @returns string containing list separator to use.
+ */
+std::string_view GetListSeparator()
+{
+	return _langpack.list_separator;
+}
 
 const char *GetStringPtr(StringID string)
 {
@@ -1311,6 +1321,7 @@ static void FormatString(StringBuilder &builder, const char *str_arg, StringPara
 					CargoTypes cmask = args.GetNextParameter<CargoTypes>();
 					bool first = true;
 
+					std::string_view list_separator = GetListSeparator();
 					for (const auto &cs : _sorted_cargo_specs) {
 						if (!HasBit(cmask, cs->Index())) continue;
 
@@ -1318,7 +1329,7 @@ static void FormatString(StringBuilder &builder, const char *str_arg, StringPara
 							first = false;
 						} else {
 							/* Add a comma if this is not the first item */
-							builder += ", ";
+							builder += list_separator;
 						}
 
 						GetStringWithArgs(builder, cs->name, args, next_substr_case_index, game_script);
@@ -1964,6 +1975,7 @@ bool ReadLanguagePack(const LanguageMetadata *lang)
 	_current_text_dir = (TextDirection)_current_language->text_dir;
 	_config_language_file = FS2OTTD(_current_language->file.filename());
 	SetCurrentGrfLangID(_current_language->newgrflangid);
+	_langpack.list_separator = GetString(STR_LIST_SEPARATOR);
 
 #ifdef _WIN32
 	extern void Win32SetCurrentLocaleName(std::string iso_code);

src/strings_func.h

@@ -109,6 +109,7 @@ extern TextDirection _current_text_dir; ///< Text direction of the currently sel
 
 void InitializeLanguagePacks();
 const char *GetCurrentLanguageIsoCode();
+std::string_view GetListSeparator();
 
 /**
  * A searcher for missing glyphs.

src/table/strgen_tables.h

@@ -127,6 +127,7 @@ static const CmdStruct _cmd_structs[] = {
 	{"COMPANY_NUM",       EmitSingleChar, SCC_COMPANY_NUM,        1, -1, C_NONE},
 	{"PRESIDENT_NAME",    EmitSingleChar, SCC_PRESIDENT_NAME,     1, -1, C_NONE | C_GENDER},
 
+	{"SPACE",             EmitSingleChar, ' ',                    0, -1, C_DONTCOUNT},
 	{"",                  EmitSingleChar, '\n',                   0, -1, C_DONTCOUNT},
 	{"{",                 EmitSingleChar, '{',                    0, -1, C_DONTCOUNT},
 	{"UP_ARROW",          EmitSingleChar, SCC_UP_ARROW,           0, -1, C_DONTCOUNT},