Opened 7 years ago

Last modified 5 weeks ago

#3540 assigned Feature Request

Implement optional ByRef parameters for functions

Reported by: TheDcoder <TheDcoder@…> Owned by: Jon
Milestone: Component: AutoIt
Version: Severity: None
Keywords: optional, functions, byref Cc:


Hello, I know that this had been already bought up in ticket #2360 but I am going to re-request the feature with proper reasoning and support.

I would like to see optional ByRef parameters work in AutoIt. They would function something like this: If a function has been called which contains an optional ByRef parameter, the ByRef parameter should act as a "normal" non-ByRef parameter unless it has been specified in the function call.

There are several advantages to this approach:

  1. It is fully backward compatible
  2. Several functions which use ByRef parameters can be made optional
  3. This solves the problem of creating "dummy" variables which are just created for the sake of passing them to ByRef parameters.

I think this is relatively easy to implement and won't have any side effects unlike most feature requests.

If we have nothing to lose but except gain, why don't we do it? ;)

Here is some proof-of-concept code:


Func FuncWithOptionalByRef(ByRef $vFoo = "Bar")
	ConsoleWrite($vFoo & @CRLF)

Expected Output after the implementation of this feature:


In the latest version, the PoC code won't work because of an error: "Badly formatted function"

Attachments (0)

Change History (6)

comment:1 follow-up: Changed 7 years ago by TheDcoder <TheDcoder@…>

Ticket #3538 can be completed if this feature request was accepted!

comment:2 Changed 7 years ago by TheDcoder <TheDcoder@…>

All discussion related to this ticket can be found at the thread which I created at the forum.

comment:3 Changed 3 years ago by Jpm

Fix sent to Jon

comment:4 Changed 3 years ago by Jpm

  • Owner set to Jpm
  • Status changed from new to assigned

comment:5 in reply to: ↑ 1 Changed 3 years ago by mLipok

Replying to TheDcoder <TheDcoder@…>:

Ticket #3538 can be completed if this feature request was accepted!

@jpm what you can say about #3538 which TheDcoder mentioned above.

Last edited 3 years ago by mLipok (previous) (diff)

comment:6 Changed 5 weeks ago by Jpm

  • Owner changed from Jpm to Jon

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