GNU bug report logs - #46184
28.0.50; child-frame-border-width of 0 falls back to internla-border-width

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From: martin rudalics <rudalics <at> gmx.at>
To: Aaron Jensen <aaronjensen <at> gmail.com>, 46184 <at> debbugs.gnu.org, Alexander Miller <alexanderm <at> web.de>
Subject: bug#46184: 28.0.50; child-frame-border-width of 0 falls back to internla-border-width
Date: Sat, 30 Jan 2021 16:26:07 +0100

[Message part 1 (text/plain, inline)]

> (make-frame `(
> 	      (parent-frame . ,(window-frame))
> 	      (child-frame-border-width . 0)
> 	      (internal-border-width . 200)))
>
> I would expect the border width to only fall back if
> child-frame-border-width is nil, since 0 is a useful setting.

It's not entirely trivial to do that (frame parameters are a pain in
this regard) but please have a look at the attached patch (tested on a
GTK build only).  Alexander, please have a look too.

Thanks, martin

[child-frame-border-width.diff (text/x-patch, attachment)]

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