bug#21480: 25.0.50; Frame width gets set to 16 pixels wider than the provided width in the args

[Kaushal Modi <kaushal.modi@gmail.com>]

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Hi Martin,

This was a great "today-I-learned" thread.

Both of your suggested solutions work:
- Using frame-text-width/height instead of frame-pixel-width/height is the
right thing to do. I misunderstood frame-text-* fns to return the
parameters in text char widths and frame-pixel-* fns to return the
parameters in pixels.
- In emacs 25+, frame-inhibit-implied-resize can be set to
'(menu-bar-lines) to prevent frame resize when toggling the menu bar.

Thank you!

On Tue, Sep 15, 2015 at 4:33 AM martin rudalics <rudalics@gmx.at> wrote:

>  >    (set-frame-width nil width nil t)
>  >    (message "%s" (cons width (frame-text-width))))
>
> Sorry.  Without the ‘sit-for’ this is confusing.  So this
>
> (let ((width (frame-pixel-width)))
>    (setq frame-resize-pixelwise t)
>    (set-frame-width nil (+ width 20) nil t)
>    (sit-for 2)
>    (set-frame-width nil width nil t)
>    (sit-for 2)
>    (message "%s" (cons width (frame-pixel-width))))
>
> is bad while this
>
> (let ((width (frame-text-width)))
>    (setq frame-resize-pixelwise t)
>    (set-frame-width nil (+ width 20) nil t)
>    (sit-for 2)
>    (set-frame-width nil width nil t)
>    (sit-for 2)
>    (message "%s" (cons width (frame-text-width))))
>
> should do what you want.
>
> martin
>
>

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