id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1902	Better error msg for (undefined) Global var in Function definition.	mvg		"More informative error message for undefined vars(global) use in function parameter part.
Like using the func-def line-number and full function definition part.
{{{
#AutoIt3Wrapper_run_au3check=n
Function()
;; Global $NA='NA' ;; missing, or late global var definition.
Func Function($1=$NA)
	ConsoleWrite('$1=' & $1 & @CRLF)
EndFunc
;; Error out messages.
;; X:\...\MyAutoIt.au3 (2) : ==> Variable used without being declared.:
;; Function()
;; Function()^ ERROR
}}}

If you know/remember how to interpreted this error message, this message might be clear. But if you don't ... It might more than needed time to figure out the reported problem.

,,(3.3.6.1),,"	Feature Request	closed		AutoIt		None	Rejected	function definition undefined global variable