GNU bug report logs - #52493
29.0.50; Setting Inconsolata up in init.el makes default face rendered wrong

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From: martin rudalics <rudalics <at> gmx.at>
To: Dmitry Gutov <dgutov <at> yandex.ru>, Eli Zaretskii <eliz <at> gnu.org>
Cc: rpluim <at> gmail.com, 52493 <at> debbugs.gnu.org
Subject: bug#52493: 29.0.50; Setting Inconsolata up in init.el makes default face rendered wrong
Date: Fri, 23 Dec 2022 10:14:16 +0100

> I'm not sure if you caught one of my previous messages, however, so I'd like to repeat:
>
> The problem is easily repeatable in the above scenario. But not if I change "InconsolataLGC" to "Inconsolata LGC". Then the resizing stops after the first iteration.
>
> In either case, 'M-x describe-face RET default' shows "Family: Inconsolata LGC", though. So it's not like "InconsolataLGC" is entirely unrecognized.

Does it matter?  Whatever you do - have the same form evaluated twice in
a row causing a frame resize must be a bug - somewhere.

> Anyway, here's the log (evaled the form 3 times):
>
> adjust_frame_size .. pixel_height .. 25 .. text_height .. 24
> adjust_frame_size .. pixel_height .. 900 .. text_height .. 900
> adjust_frame_size .. pixel_height .. 1296 .. text_height .. 1296
> adjust_frame_size .. pixel_height .. 1296 .. text_height .. 1296
> xg_wm_set_size_hint .. line_height .. 36 .. base_height .. 43 .. height_inc .. 18
> xg_wm_set_size_hint .. line_height .. 36 .. base_height .. 84 .. height_inc .. 18

We start here

> set-face-attribute
> xg_wm_set_size_hint .. line_height .. 45 .. base_height .. 88 .. height_inc .. 22

and come up with a frame line height of 45 pixels and an increment hint
of 22 which means that some scaling (by 2 apparently) is in effect here.
Honestly, I have no idea how this is supposed to work.

> adjust_frame_size .. pixel_height .. 1584 .. text_height .. 1584
> xg_wm_set_size_hint .. line_height .. 37 .. base_height .. 84 .. height_inc .. 18

Here we ask for the same (due to rounding) increment ...

> adjust_frame_size .. pixel_height .. 1260 .. text_height .. 1260
> set-face-attribute
> adjust_frame_size .. pixel_height .. 1224 .. text_height .. 1224
> adjust_frame_size .. pixel_height .. 1188 .. text_height .. 1188
> set-face-attribute
> adjust_frame_size .. pixel_height .. 1152 .. text_height .. 1152
> adjust_frame_size .. pixel_height .. 1116 .. text_height .. 1116

... but then we do not set hints any more so it seems that we do all the
shrinking ourselves - just how can we shrink and not send size hints at
the same time is yet a mystery to me.

Please run again with the new patch but also evaluate

(setq frame-size-history '(100))

Then perform some 'set-face-attribute' calls, evaluate

(frame--size-history)

and get me the contents of both buffers *foo* and *frame-size-history*.

Thanks, martin

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