Bug 620606

Summary: Hinting on 'cent' glyph in italic fonts broken
Product: [Fedora] Fedora Reporter: Cody Boisclair <cody>
Component: liberation-fontsAssignee: Pravin Satpute <psatpute>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: fonts-bugs, i18n-bugs, petersen, psatpute
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Hardware: All   
OS: Linux   
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Fixed In Version: liberation-fonts-1.07.2-2.fc16 Doc Type: Bug Fix
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Last Closed: 2012-03-06 19:38:32 UTC Type: ---
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Description Flags
Screenshot of the cent glyph as displayed in OpenOffice. none

Description Cody Boisclair 2010-08-03 01:08:55 UTC
Created attachment 436160 [details]
Screenshot of the cent glyph as displayed in OpenOffice.

Description of problem:
The character 'cent' (¢) has been modified in Liberation Mono and Liberation Sans without regenerating hints, as has already been discussed in bug 474522.

Version-Release number of selected component (if applicable):
1.06.0.20100721

How reproducible:
Consistently, as long as bytecode hinting has been turned on.

Steps to Reproduce:
1. Use a version of Freetype with bytecode hinting enabled.
2. Make sure that hinting is set to 'full' in your window manager's appearance preferences.
3. Enter the character ¢ (U+00A2) in an application such as OpenOffice.
4. Set the font to Liberation Sans Italic or Liberation Mono Italic.
  
Actual results:
The cent sign looks correct.

Expected results:
The cent sign is warped beyond recognition.

Comment 1 Cody Boisclair 2010-08-03 01:30:28 UTC
I've been playing around with the font, and it's actually even more complicated than it seemed at first. It's not merely a matter of regenerating instructions; that has, in fact, been done. The problem is that FontForge's auto-instructions conflict with the global instructions which were manually coded by Ascender; the glyph looks slightly better removing instructions entirely.

Would it be better to revert to the 1.03 version of the cent glyph (no cross-bar)? Or just leave the glyph unhinted?

Comment 2 Cody Boisclair 2010-08-03 01:36:08 UTC
The other alternative, of course, is to find a contributor who actually has knowledge of bytecode hinting. I'd fix it myself, except I don't know the slightest thing about TrueType hinting myself.

Anyone here have any knowledge of TrueType instructions who might be able to fix this? (DejaVu contributors, perhaps?)

Comment 3 Pravin Satpute 2010-08-04 08:16:53 UTC
yes, hinting is really presently major thing for liberation
there are few more bugs open for hinting

see #591556

will discuss this in tomorrow fedora i18n meeting

Comment 4 Pravin Satpute 2012-02-09 08:42:53 UTC
Removed hinting instruction for cent glyph for now in upstream release 1.07.2

Comment 5 Fedora Update System 2012-02-09 08:44:47 UTC
liberation-fonts-1.07.2-1.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/liberation-fonts-1.07.2-1.fc16

Comment 6 Fedora Update System 2012-02-10 00:55:38 UTC
Package liberation-fonts-1.07.2-1.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing liberation-fonts-1.07.2-1.fc16'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2012-1501/liberation-fonts-1.07.2-1.fc16
then log in and leave karma (feedback).

Comment 7 Fedora Update System 2012-02-13 16:03:43 UTC
liberation-fonts-1.07.2-2.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/liberation-fonts-1.07.2-2.fc16

Comment 8 Fedora Update System 2012-03-06 19:38:32 UTC
liberation-fonts-1.07.2-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.