bug#6024: 23.1; MacOS X (10.5.8); Unicode fonts not displayed well

[Michael Norrish]

Though I know the font has a Greek alpha (U+03B1) and beta (by looking 
at the "Character palette" tool), emacs fails to display it, even though 
it's happy to display a collection of mathematical arrows.  The 
universal quantifier (U+2200) is odd too; though it's there, it's 
enclosed in a little box. I suspect that's spurious, though I've no idea 
how I induced the box to appear. (See the attached screenshot.)

(The only fonts I could find that would display the Greek letters were 
Helvetica and Times.

I confirmed with M-x describe-char that the characters were actually 
there, and just not displayed.

The emacs was started as

  Applications/Emacs.app/Contents/MacOS/Emacs -q

Michael

--

In GNU Emacs 23.1.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54)
 of 2009-08-16 on black.local
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--with-ns''

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_AU.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  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
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-\ T e <tab> <tab> X <return> C-x b s <backspace>
* s c <tab> <return> \ C-\ <backspace> \ a l p h a
\ f o r a l l \ b e t r a <backspace> <backspace> <backspace>
<backspace> \ b e t a \ m a p s t o \ t o \ R i g h
t a r r o w SPC C-n C-n <return> <return> C-p C-p C-f
C-f C-b C-f C-n C-n s-x s-x M-x r e p o <tab> r t <tab>
<return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...
Loading quail/latin-ltx...done
kill-region: The mark is not set now, so there is no region [2 times]
Making completion list...

emacs-screenshot.png
Description: PNG image