[drew.adams@oracle.com: RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame, so (frame-width) is incorrect]

[drew.adams@oracle.com: RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame, so (frame-width) is incorrect]

[Richard Stallman]

Could someone please look at this bug report?

------- Start of forwarded message -------
From: "Drew Adams" <drew.adams@oracle.com>
To: <rms@gnu.org>
Cc: <emacs-pretest-bug@gnu.org>
Subject: RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame,so (frame-width) is incorrect
Date: Sun, 10 Oct 2004 10:14:03 -0700
In-Reply-To: <E1CGfR5-00030Q-4j@fencepost.gnu.org>
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I tried it with different fonts. Try any two fonts that differ only by size.
For example:

(set-frame-font "-outline-Lucida
Console-normal-r-normal-normal-14-105-96-96-c-80-iso8859-1")

(set-frame-font "-outline-Lucida
Console-normal-r-normal-normal-18-105-96-96-c-80-iso8859-1")

Changing the frame font size this way doesn't do what it should (change the
frame size).


- -----Original Message-----From: Richard Stallman
Which fonts did you use?  Please provide a *precise* test case
that we can try, so we can debug what happens.
------- End of forwarded message -------

Re: [drew.adams@oracle.com: RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame, so (frame-width) is incorrect]

[Jason Rumney]

> I tried it with different fonts. Try any two fonts that differ only by size.
> For example:
>
> (set-frame-font "-outline-Lucida
> Console-normal-r-normal-normal-14-105-96-96-c-80-iso8859-1")
>
> (set-frame-font "-outline-Lucida
> Console-normal-r-normal-normal-18-105-96-96-c-80-iso8859-1")

You have only changed the pixel height of the font, without changing
the height in points, or the width of the font. This makes Emacs try
to accomodate your request as far as it can, so even though the
closest matching font is wider, it uses the width you specified (80 in
tenths of points) in frame width calculations. If you replace the
other size specifiers with wildcards, the frame width changes as
expected:

(set-frame-font
 "-outline-Lucida Console-normal-r-normal-normal-18-*-96-96-c-*-iso8859-1")

RE: [drew.adams@oracle.com: RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame, so (frame-width) is incorrect]

[Drew Adams]

Thanks, Jason. Very clear.

The pixel-height-only change "worked" in Emacs 20, and I was thinking it
should also "work" as is in 21 - but you are right: my code was not
complete/correct. - Drew

-----Original Message-----From: Jason Rumney
RE: set-frame-font with no KEEP-SIZE arg doesn't resize the frame, so
(frame-width) is incorrect

> (set-frame-font "-outline-Lucida
> Console-normal-r-normal-normal-14-105-96-96-c-80-iso8859-1")
> (set-frame-font "-outline-Lucida
> Console-normal-r-normal-normal-18-105-96-96-c-80-iso8859-1")

You have only changed the pixel height of the font, without changing
the height in points, or the width of the font...If you replace the
other size specifiers with wildcards, the frame width changes as
expected:
(set-frame-font "-outline-Lucida
Console-normal-r-normal-normal-18-*-96-96-c-*-iso8859-1")