23.0.60; Large Fonts with latin-1 characters inconsistent in size

[David Kastrup <dak@gnu.org>]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Editing a file in AUCTeX, I see the ugly screenshot shown below.  C-u
C-u C-x = on the (correctly sized_ character before the problematic
one delivers

        character: r (114, #o162, #x72)
preferred charset: ascii (ASCII (ISO646 IRV))
       code point: 0x72
           syntax: w 	which means: word
         category: a:ASCII graphic characters 32-126 (ISO646 IRV:1983[4/0])
		   l:Latin r:Japanese roman
      buffer code: #x72
        file code: not encodable by coding system iso-latin-1-unix
          display: by this font (glyph code)
     -Misc-Fixed-Medium-R-Normal--20-200-75-75-C-100-ISO8859-1 (#x72)

Character code properties are not shown: customize what to show

There are text properties here:
  auto-composed        t
  charset              iso-8859-1
  face                 (font-latex-slide-title-face)
  fontified            t

[back]


The same on the following (too small) Umlaut delivers:

        character: ä (228, #o344, #xe4)
preferred charset: gb18030 (GB18030)
       code point: 0x81308A31
           syntax: w 	which means: word
         category: j:Japanese l:Latin
      buffer code: #xC3 #xA4
        file code: #xE4 (encoded by coding system iso-latin-1-unix)
          display: by this font (glyph code)
     -Misc-Fixed-Medium-R-Normal--20-200-75-75-C-100-ISO8859-1 (#xE4)

Character code properties are not shown: customize what to show

There are text properties here:
  auto-composed        t
  charset              iso-8859-1
  face                 (font-latex-slide-title-face)
  fontified            t

[back]

The "code point" on the too small character looks somewhat ludicrous.
You can also see that apparently the same font is supposedly used.

I am pretty sure this did not happen pre-unicode2.  So what gives here?


In GNU Emacs 23.0.60.3 (i686-pc-linux-gnu, GTK+ Version 2.12.0)
 of 2008-02-08 on lisa
Windowing system distributor `The X.Org Foundation', version 11.0.10300000
configured using `configure  '--prefix=/usr/local/emacs-21' '--without-toolkit-scroll-bars''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: PDFLaTeX

Minor modes in effect:
  shell-dirtrack-mode: t
  reftex-mode: t
  TeX-PDF-mode: t
  server-mode: t
  desktop-save-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
<return> <switch-frame> <switch-frame> n n n <return> 
SPC E E B C-M-e y e s <return> q <return> SPC n n n 
E q <return> SPC n n q g p <return> SPC E SPC SPC SPC 
SPC SPC SPC E B C-M-e y e s <return> q <return> SPC 
SPC SPC q g <return> SPC E SPC q <return> SPC g q g 
p p p p <return> SPC q g q y <switch-frame> <switch-frame> 
<next> <prior> <next> <next> <prior> <up> <up> <up> 
<up> <up> <up> <up> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> <right> <left> C-u 
C-u C-x = M-x r e p o <tab> r <tab> <return>

Recent messages:
Checking new news...done
Are you sure you want to quit reading news? (y or n) 
Wrote /home/dak/.newsrc
Saving /home/dak/.newsrc.eld...
Saving file /home/dak/.newsrc.eld...
Wrote /home/dak/.newsrc.eld
Saving /home/dak/.newsrc.eld...done
Type C-x 1 to delete the help window, C-M-v to scroll help.
Char: r (114, #o162, #x72) point=4424 of 9743 (45%) column=36
Making completion list...

-- 
David Kastrup