This bug was fixed in the package poppler - 0.24.5-2ubuntu4.2
---------------
poppler (0.24.5-2ubuntu4.2) trusty; urgency=medium
* 0001-Map-Standard-Expert-encoding-ligatures-to-AGLFN-name.patch:
Cherry-pick patch from upstream to fix ligature mapping with substitute
fonts which don't use the current standard glyph names. (LP: #1379375)
-- Iain Lane <i...@orangesquash.org.uk> Mon, 19 Jan 2015 13:18:49 +0000
** Changed in: poppler (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1379375
Title:
evince does not display ligatures
Status in fontconfig package in Ubuntu:
Fix Released
Status in poppler package in Ubuntu:
Fix Released
Status in fontconfig source package in Trusty:
Won't Fix
Status in poppler source package in Trusty:
Fix Released
Status in fontconfig source package in Utopic:
Won't Fix
Status in poppler source package in Utopic:
Fix Released
Bug description:
[ Description ]
Some ligatures (e.g. "fi") are not displayed in certain fonts, because
there are two different naming schemes in use in the wild.
[ Fix ]
Poppler upstream fixed this by adding a lookup table to fall back to
the second scheme if necessary.
[ QA ]
1. Install tex-gyre
2. Download
https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1317599/+attachment/4213588/+files/rfa1415_15sep_lect1.pdf
3. Open the file in evince
4. Look at "Biometrics: file" on page 3
If the "fi" ligature in "file" is not displayed, you have this bug.
"file" should be displayed normally after it's fixed.
[ Regression potential ]
Since this patch implements a fallback only when lookup false, there
shouldn't be any problems. Still, check all existing PDFs are still
displayed correctly.
[ Original report ]
While there's Bug #1325230 with the same title and the linked PDFs there are
working fine here (displaying "fi" correctly) there seems to be still some bug
regarding ligatures.
https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1325230
I have some PDFs substituting Helvetica (and others) with TeX Gyre
Heros and showing no "fi" ligature. I attached a patch I derived from
the patch in Bug #1325230 which is working fine. Now it uses Nimbus
Sans L and the ligatures are fine.
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