Re: Question about bignum usage

["Gerd Möllmann" <gerd.moellmann@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Gerd Möllmann <gerd.moellmann@gmail.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  emacs-devel@gnu.org
>> Date: Thu, 20 Jun 2024 20:32:00 +0200
>> 
>> Seems to have something to do with a header line.
>
> You mean, mode line, right?  Because:
>
>>     frame #17: 0x000000010001dad4 emacs`display_mode_line(w=0x0000000106e41e28, face_id=MODE_LINE_ACTIVE_FACE_ID, format=(struct Lisp_Cons *) $24 = 0x000000010a267750) at xdisp.c:27395:7 [opt]
>
> MODE_LINE_ACTIVE_FACE_ID is for the mode line, not for the header
> line.
>
>> It's always copy_font_spec that is involved in this way. I can lean on
>> 'g' in the *igc* buffer, and watch is grow by the hundreds :-)
>
> Does the "*igc*" string have face or mouse-face text properties?  If
> not, I don't understand why face_at_string_position calls
> merge_face_ref.

Oh right, I've overlooked the id, sorry.

The "*igc*" is the buffer name. It doesn't have properties that I put on
it. And the mode-line face looks almost like the header-line face,
except the colors.

  Face: mode-line (sample) (customize this face)

  Documentation:
  Face for the mode lines as well as header lines.
  See ‘mode-line-active’ and ‘mode-line-inactive’ for the faces
  used on mode lines.

  Defined in ‘faces.el’.


             Family: unspecified
            Foundry: unspecified
              Width: unspecified
             Height: unspecified
             Weight: unspecified
              Slant: unspecified
         Foreground: #ffffff
  DistantForeground: unspecified
         Background: #505050
          Underline: unspecified
           Overline: unspecified
     Strike-through: unspecified
                Box: #959595
            Inverse: unspecified
            Stipple: unspecified
               Font: unspecified
            Fontset: unspecified
             Extend: unspecified
            Inherit: modus-themes-ui-variable-pitch

    This face was introduced, or its default value was changed, in
    version 21.1 of Emacs.

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