Bug 443008

Summary: ugly ligatures
Product: [Fedora] Fedora Reporter: Daniel Colascione <dan.colascione>
Component: pangoAssignee: Behdad Esfahbod <behdad>
Status: CLOSED UPSTREAM QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: 8CC: fonts-bugs
Target Milestone: ---   
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2008-04-18 16:58:53 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
ugly ligatures
none
same word, MOZ_DISABLE_PANGO=1 none

Description Daniel Colascione 2008-04-18 05:50:21 UTC
Description of problem:
See attached screenshot. DejaVu is the default font, and its western ligatures
look, well, ugly, and are disconcerting. I can reproduce the problem with GTK
programs but not QT ones.

Version-Release number of selected component (if applicable):
pango-1.18

How reproducible:
Every time

Steps to Reproduce:
1. Use DejaVu LGC or another font with ligatures
2. Type "confirms" (or "firefox") western text into Pango-using program
3. See apparent ugly baseline shift
  
Actual results:
Ugly ligatures makes text look misaligned

Expected results:
Characters that appear to share a baseline

Additional info:

Comment 1 Daniel Colascione 2008-04-18 05:50:21 UTC
Created attachment 302837 [details]
ugly ligatures

Comment 2 Daniel Colascione 2008-04-18 05:56:44 UTC
Created attachment 302839 [details]
same word, MOZ_DISABLE_PANGO=1

Disabling Pango eliminates the problem.

Comment 3 Ben Laenen 2008-04-18 11:11:54 UTC
IIRC, that problem happened when using the Freetype autohinter. Switching to 
the proper bytecode interpreter for font hinting solves that.

Comment 4 Nicolas Mailhot 2008-04-18 11:36:41 UTC
Then that's a freetype not pango bug IMHO. Please report it upstream.

Comment 5 Behdad Esfahbod 2008-04-18 16:58:53 UTC
yeah, it's autohinter issue with freetype.