Comment 0 for bug 736153

I'm trying to typeset some texts in ancient Mongolian and Phags-pa, both of which have been included in Unicode. For Mongolian, I've installed the ttf-manchufont package. For Phags-pa, I've used the font available here: http://babelstone.blogspot.com/2006/12/phags-pa-shaping-behaviour.html

Both languages use the Unicode Variation Selectors. In a nutshell, the combination character + variation selector should change the representation of the character to a different variant. See the table of Standardised Unicode variants here: http://www.unicode.org/Public/UNIDATA/StandardizedVariants.html

The expected behavior does not work in any of the packages I've tried (gedit, gimp and OpenOffice). Instead, the variation selector remains as it's own character and the preceding character is unmodified (see attachment).

This is NOT an issue with the fonts because:
a. The fonts have the appropriate substitutions defined, as can be observed by editing the fonts in e.g. fontforge.
b. The expected behavior happens in WIndows 7 using these fonts.

This is an issue with whatever package handles Unicode glyph substitution.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-27.48-generic 2.6.35.11
Uname: Linux 2.6.35-27-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Wed Mar 16 10:30:20 2011
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7576
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-27-generic root=UUID=136a2918-79f6-4777-a8b5-b9d86515a24b ro quiet splash
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 12/17/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V4.0
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 790GX-G65 (MS-7576)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV4.0:bd12/17/2009:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7576:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rn790GX-G65(MS-7576):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7576
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-27-generic