Comparison

util.debug: Re-fix parameter handling (I think it matches debug.traceback() more accurately now) and document level fudge

comparison

equal deleted inserted replaced

-:dbe9d75c0452
+:74ae0433f8dd
 	return getstring(styles.boundary_padding, "v"..padding).." "..getstring(styles.filename, last_source_desc).." "..getstring(styles.boundary_padding, padding..(#last_source_desc%2==0 and "-v" or "v "));
 end
 function _traceback(thread, message, level)
-	if type(thread) ~= "thread" then
+	-- Lua manual says: debug.traceback ([thread,] [message [, level]])
+	-- I fathom this to mean one of:
+	-- ()
+	-- (thread)
+	-- (message, level)
+	-- (thread, message, level)
+	if thread == nil then -- Defaults
+		thread, message, level = coroutine.running(), message, level;
+	elseif type(thread) == "string" then
 		thread, message, level = coroutine.running(), thread, message;
+	elseif type(thread) ~= "thread" then
+		return nil; -- debug.traceback() does this
 	end
-	if level and type(message) ~= "string" then
-		return nil, "invalid message";
+	level = level or 1;
-	elseif not level then
-		if type(message) == "number" then
-			level, message = message, nil;
-		else
-			level = 1;
-		end
-	end
 	message = message and (message.."\n") or "";
+	-- +3 counts for this function, and the pcall() and wrapper above us
 	local levels = get_traceback_table(thread, level+3);
 	local last_source_desc;
 	local lines = {};