Merge pull request #45 from jtbx/mangled-error-fix

Fix mangled error message format

Author: gilzoide

src/pluginscript_callbacks.lua

@@ -54,14 +54,7 @@ local function print_coroutine_error(co, err, msg_prefix)
 	if not filename then
 		filename, line, err_msg = '?', -1, err
 	end
-	local msg_lines = {
-		(msg_prefix or '') .. debug_traceback(co, err_msg, 1),
-	}
-	for i = #lps_callstack, 1, -1 do
-		table_insert(msg_lines, table_concat(lps_callstack[i], ' '))
-	end
-	local msg = table_concat(msg_lines, '\n\tin ')
-	api.godot_print_error(msg, debug_getinfo(co, 0, 'n').name, filename, tonumber(line))
+	api.godot_print_error((msg_prefix or filename .. ':' .. line .. ': ') .. err_msg, debug_getinfo(co, 0, 'n').name, filename, tonumber(line))
 end
 
 local function wrap_callback(f, error_return)