buff-menu header wrong char

["Robert J. Chassell" <bob@rattlesnake.com>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=utf-8, Size: 3433 bytes --]

Today's GNU Emacs CVS snapshot, Thu, 2004 Dec  2  16:54 UTC
GNU Emacs 21.3.50.19 (i686-pc-linux-gnu, GTK+ Version 2.4.13) 
started with

     emacs/src/emacs -Q --eval '(setq Buffer-menu-use-header-line nil)'

A *Buffer List* looks like this:

    CRM Buffer                Size  Mode              File
    ôôô ôôôôôô                ôôôô  ôôôô              ôôôô
    .   *scratch*                0  Lisp Interaction
      * *Messages*             150  Fundamental

instead of like this:

    CRM Buffer                Size  Mode              File
    --- ------                ----  ----              ----
    .   *scratch*                0  Lisp Interaction
      * *Messages*             150  Fundamental

[i.e., the hyphens, ---, are replaced by the sequences of \364\364\364 ]

This comes from revision 1.75 to emacs/lisp/buff-menu.el of 2004/11/22
15:12:09, which includes a change to `list-buffers-noselect' that
tests

     (if (char-displayable-p ?—) ?— ?-)))

However, the documentation for `char-displayable-p' says

    On a multi-font display, the test is only whether there is an
    appropriate font from the selected frame's fontset to display
    char's charset in general.  Since fonts may be specified on a
    per-character basis, this may not be accurate.

When

    (let ((underline (if (char-displayable-p ?—) ?— ?-)))

is replaced by 

    (let ((underline  ?-))

the  *Buffer List* displays correctly.


Here is the info on   character: ô 

  character: ô (0364, 244, 0xf4)
    charset: eight-bit-graphic (8-bit graphic char (0xA0..0xFF))
 code point: 244
     syntax:   	which means: whitespace
buffer code: 0xF4
  file code: 0xF4 (encoded by coding system raw-text-unix)
    display: by this font (glyph code)
     -ETL-Fixed-Medium-R-Normal--16-160-72-72-C-80-ISO8859-1 (0xF4)



In GNU Emacs 21.3.50.19 (i686-pc-linux-gnu, GTK+ Version 2.4.13)
 of 2004-12-02 on benthic
Distributor `The XFree86 Project, Inc', version 11.0.40300001
configured using `configure '--with-type1' '--with-x-toolkit=gtk' '--with-pop' '--prefix=/usr/local' '--with-sound=yes''

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: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: nil

Major mode: Lisp Interaction

Minor modes in effect:
  mouse-wheel-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  line-number-mode: t

Recent input:
d / u s r / . l o c M-b C-b C-d C-e a l / s r c / e 
m a c s <return> C-n C-n C-n C-n C-n C-b C-b C-b C-b 
C-b C-b C-SPC C-e C-b C-b C-b C-b C-b C-b C-b C-b C-b 
C-b C-b C-b C-b C-b C-b C-b C-SPC C-e M-w C-x b <return> 
C-n C-n <return> <return> C-y C-x o C-p C-u C-x = C-x 
h M-w C-x b <return> C-x o C-x o C-n C-n C-n C-n <return> 
<return> <return> C-y M-x r e <tab> p o r <tab> <r
eturn>

Recent messages:
Loading dired...done
Mark set [3 times]
Loading descr-text...done
Loading composite...done
Loading help-mode...done
Loading wid-edit...done
Char: ô (0364, 244, 0xf4) point=56 of 203 (27%) column 0 
Mark set [3 times]
Making completion list...
Loading emacsbug...done

-- 
    Robert J. Chassell                         
    bob@rattlesnake.com                         GnuPG Key ID: 004B4AC8
    http://www.rattlesnake.com                  http://www.teak.cc