GNU bug report logs - #47806
28.0.50; `make-frame` frame should probably clone the `environment` parameter into the new frame

Previous Next

Full log

Message #20 received at 47806 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Thibault Polge <thibault <at> thb.lt>
Cc: 47806 <at> debbugs.gnu.org
Subject: Re: bug#47806: 28.0.50; `make-frame` frame should probably clone
 the `environment` parameter into the new frame
Date: Fri, 16 Apr 2021 09:05:45 +0300

> From: Thibault Polge <thibault <at> thb.lt>
> Cc: 47806 <at> debbugs.gnu.org
> Date: Fri, 16 Apr 2021 00:27:59 +0200
> 
> > What is the "ancestor frame"?  We don't have such relationships
> > between frames.  And if you mean the frame that was the selected on
> > when the other frame was created, I'm not sure I agree that this is an
> > indication of whether environment should be copied.
> 
> Yes, that's roughly what I meant by "ancestor".  I'd argue to the
> contrary that this is a very good indication: those two frames run are
> related, they should share their environment instead of the daemon's.
> But perhaps my understanding of the problem is biased by my WM issues.
> 
> I meant something just a bit stronger than "was the selection", though.
> In my idea, a new frame should inherit the selected frame's environment
> if and only if it's being created by an interactive command call.  This
> excludes, for example, frames created from idle timers, or through a
> process filter or a sentinel.  This is because, IIUC, interactive
> commands need to be called from a frame, so there's really a
> nonambiguous "parent" there.

I don't think I agree.  Interactive invocation could have several
layers before it comes to the frame-creation function.  For example, I
could imagine a command that eventually does

  (with-selected-frame FRAME
    (make-frame ...))

IOW, the frame that is the selected one when a command is invoked is a
very weak indication of any "parent-child" relationship.  I don't
think we have anything like that anywhere else in Emacs, except with
child frames.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.