(svn r25986) [1.3] -Backport from trunk:

- Fix: [GS] Language file scanner considered filenames starting with '.' as valid translations, resulting in languages with empty name, which causes trouble [FS#5750] (r25818)
- Fix: [GS] Handle savegames which contain GS translations for languages with empty name more gently [FS#5750] (r25817)
- Fix: [Script] ScriptTile::IsBuildableRectangle could report true for tiles outside of the map, if they happened to wrap around into a valid area [FS#5754] (r25815)
- Fix: Ensure the vehicle bar is high enough for the start/stop vehicle graphics [FS#5740] (r25805)

src/game/game_text.cpp

@@ -60,18 +60,11 @@ void NORETURN CDECL strgen_fatal(const char *s, ...)
 /**
  * Create a new container for language strings.
  * @param language The language name.
+ * @param end If not NULL, terminate \a language at this position.
  */
-LanguageStrings::LanguageStrings(const char *language)
+LanguageStrings::LanguageStrings(const char *language, const char *end)
 {
-	const char *p = strrchr(language, PATHSEPCHAR);
-	if (p == NULL) {
-		p = language;
-	} else {
-		p++;
-	}
-
-	const char *e = strchr(p, '.');
-	this->language = e == NULL ? strdup(p) : strndup(p, e - p);
+	this->language = end == NULL ? strdup(language) : strndup(language, end - language);
 }
 
 /** Free everything. */
@@ -95,7 +88,17 @@ LanguageStrings *ReadRawLanguageStrings(const char *file)
 			return NULL;
 		}
 
-		ret = new LanguageStrings(file);
+		const char *langname = strrchr(file, PATHSEPCHAR);
+		if (langname == NULL) {
+			langname = file;
+		} else {
+			langname++;
+		}
+
+		/* Check for invalid empty filename */
+		if (*langname == '.' || *langname == 0) return NULL;
+
+		ret = new LanguageStrings(langname, strchr(langname, '.'));
 
 		char buffer[2048];
 		while (to_read != 0 && fgets(buffer, sizeof(buffer), fh) != NULL) {

src/game/game_text.hpp

@@ -26,7 +26,7 @@ struct LanguageStrings {
 	const char *language; ///< Name of the language (base filename).
 	StringList lines;     ///< The lines of the file to pass into the parser/encoder.
 
-	LanguageStrings(const char *language);
+	LanguageStrings(const char *language, const char *end = NULL);
 	~LanguageStrings();
 };
 

src/saveload/game_sl.cpp

@@ -148,7 +148,7 @@ static void Load_GSTR()
 		_game_saveload_string = NULL;
 		SlObject(NULL, _game_language_header);
 
-		LanguageStrings *ls = new LanguageStrings(_game_saveload_string);
+		LanguageStrings *ls = new LanguageStrings(_game_saveload_string != NULL ? _game_saveload_string : "");
 		for (uint i = 0; i < _game_saveload_strings; i++) {
 			SlObject(NULL, _game_language_string);
 			*ls->lines.Append() = strdup(_game_saveload_string != NULL ? _game_saveload_string : "");

src/script/api/script_tile.cpp

@@ -43,10 +43,11 @@
 
 /* static */ bool ScriptTile::IsBuildableRectangle(TileIndex tile, uint width, uint height)
 {
-	uint tx, ty;
+	/* Check whether we can extract valid X and Y */
+	if (!::IsValidTile(tile)) return false;
 
-	tx = ScriptMap::GetTileX(tile);
-	ty = ScriptMap::GetTileY(tile);
+	uint tx = ScriptMap::GetTileX(tile);
+	uint ty = ScriptMap::GetTileY(tile);
 
 	for (uint x = tx; x < width + tx; x++) {
 		for (uint y = ty; y < height + ty; y++) {

src/vehicle.cpp

@@ -849,14 +849,10 @@ static void RunVehicleDayProc()
 				if (HasBit(callback, 0)) {
 					/* After a vehicle trigger, the graphics and properties of the vehicle could change. */
 					TriggerVehicle(v, VEHICLE_TRIGGER_CALLBACK_32); // Trigger vehicle trigger 10
-					v->MarkDirty();
+					v->First()->MarkDirty();
 				}
 				if (HasBit(callback, 1)) v->colourmap = PAL_NONE;
 
-				/* After a vehicle trigger, the graphics and properties of the vehicle could change.
-				 * Note: MarkDirty also invalidates the palette, which is the meaning of bit 1. So, nothing special there. */
-				if (callback != 0) v->First()->MarkDirty();
-
 				if (callback & ~3) ErrorUnknownCallbackResult(v->GetGRFID(), CBID_VEHICLE_32DAY_CALLBACK, callback);
 			}
 		}

src/vehicle_gui.cpp

@@ -2394,6 +2394,10 @@ public:
 	{
 		const Vehicle *v = Vehicle::Get(this->window_number);
 		switch (widget) {
+			case WID_VV_START_STOP:
+				size->height = max(size->height, max(GetSpriteSize(SPR_FLAG_VEH_STOPPED).height, GetSpriteSize(SPR_FLAG_VEH_RUNNING).height) + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
+				break;
+
 			case WID_VV_FORCE_PROCEED:
 				if (v->type != VEH_TRAIN) {
 					size->height = 0;