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bug#11003: Emacs-24 Hangs When Displaying Unicode #x6c0 (ARABIC HEH WITH

From: Achim Gratz
Subject: bug#11003: Emacs-24 Hangs When Displaying Unicode #x6c0 (ARABIC HEH WITH YEH ABOVE) -- gdb backtrace
Date: Tue, 13 Mar 2012 22:08:22 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.94 (gnu/linux)

Eli Zaretskii <address@hidden> writes:
> Are you on the same kind of system with the same build as Mohsen?
> That is:
>> In GNU Emacs (i686-pc-linux-gnu, GTK+ Version 2.24.6)
>>  of 2012-03-12 on bue0010

Compiled from Git yesterday:

GNU Emacs (i686-suse-linux-gnu, GTK+ Version 2.24.7)
 of 2012-03-12 on Rainer

> Can you show which font is used on your machine for this charcater?

emacs -Q -fn "Monospace 12"

M-: (ucs-insert 1728) ; takes about six seconds before the glyph shows up
M-: (ucs-insert 1728) ; no delay
M-: (ucs-insert 1728) ; no delay

Put cursor to the second character (since they are right-to-left
characters I don't know what "character just after point" means for just
a single char).

M-x describe-face

Face: default (sample) (customize this face)

Basic default face.

Defined in `faces.el'.

        Family: DejaVu Sans Mono
       Foundry: unknown
         Width: normal
        Height: 120
        Weight: normal
         Slant: normal
    Foreground: black
    Background: white
     Underline: nil
      Overline: nil
Strike-through: nil
           Box: nil
       Inverse: nil
       Stipple: nil
          Font: #<font-object -unknown-DejaVu Sans 
       Fontset: -unknown-DejaVu Sans 
       Inherit: nil

This also works with Adobe Courier (which is also an ISO10646 font), if
I use an ISO8859-1 font it obviously composes or replaces the glyph, but
it still reports the font selected for the frame.

+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Wavetables for the Waldorf Blofeld:

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