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Summary: Broken hinting on "u" in Liberation Mono Bold
https://bugzilla.redhat.com/show_bug.cgi?id=479371
Summary: Broken hinting on "u" in Liberation Mono Bold Product: Fedora Version: rawhide Platform: All OS/Version: All Status: NEW Severity: medium Priority: low Component: liberation-fonts AssignedTo: cchance@redhat.com ReportedBy: cody@zone38.net QAContact: extras-qa@fedoraproject.org CC: cchance@redhat.com, fedora-fonts-bugs-list@redhat.com, fedora-i18n-bugs@redhat.com Estimated Hours: 0.0 Classification: Fedora
Created an attachment (id=328517) --> (https://bugzilla.redhat.com/attachment.cgi?id=328517) Liberation Mono 1.04.93 with antialiasing on
Description of problem: Though the hinting has been fixed in Sans Bold as of version 1.04.92, the letter "u" still has incorrect hinting in Mono Bold, an error that's quite noticeable in certain sizes on any system with bytecode hinting enabled. I'm attaching a screenshot from Ubuntu to demonstrate; of particular note are 9 point (the second line) and 12 point (the 5th line).
Version-Release number of selected component (if applicable): 1.04.93
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Cody Boisclair cody@zone38.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #328517|Liberation Mono 1.04.93 |Liberation Mono Bold description|with antialiasing on |1.04.93 with antialiasing | |on
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--- Comment #1 from Cody Boisclair cody@zone38.net 2009-01-09 00:35:40 EDT --- Created an attachment (id=328518) --> (https://bugzilla.redhat.com/attachment.cgi?id=328518) Liberation Mono Bold 1.04.93 with antialiasing off
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https://bugzilla.redhat.com/show_bug.cgi?id=479371
Caius "kaio" Chance cchance@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED
--- Comment #2 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 20:47:56 EDT --- (In reply to comment #1)
Would you mean the pixel on bottom left corner?
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--- Comment #3 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 20:49:42 EDT --- Created an attachment (id=329524) --> (https://bugzilla.redhat.com/attachment.cgi?id=329524) test fix, post auto-hinting applied with fontforge
Could you please check if this .ttf has 'u' fixed?
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Caius "kaio" Chance cchance@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Flag| |needinfo?(cody@zone38.net)
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Cody Boisclair cody@zone38.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Flag|needinfo?(cody@zone38.net) |
--- Comment #4 from Cody Boisclair cody@zone38.net 2009-01-20 21:27:07 EDT --- Created an attachment (id=329526) --> (https://bugzilla.redhat.com/attachment.cgi?id=329526) Appearance of auto-hinted "u" in Liberation Mono
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--- Comment #5 from Cody Boisclair cody@zone38.net 2009-01-20 21:27:37 EDT --- Still broken, but in a different way. See attachment 329526.
For what it's worth, the "u" is OK in version 1.03 of the font - can the hinting be copied from that version?
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--- Comment #6 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 21:50:20 EDT --- I have checked again. The hinting instructions and cvt are totally same between ver 1.03 and current version.
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Caius "kaio" Chance cchance@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Keywords| |i18n
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--- Comment #7 from Cody Boisclair cody@zone38.net 2009-01-20 22:00:23 EDT --- Weird. No idea what would be causing that. I may have to play with it in FontForge some myself to see what might be causing this quirk...
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--- Comment #8 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 22:15:04 EDT --- I have triaged on my Fedora 10 and Liberation Mono Bold looks fine (attached screenshots).
Since I didn't have problem on my OpenOffice, I currently have no idea about this yet.
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--- Comment #9 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 22:16:35 EDT --- Created an attachment (id=329532) --> (https://bugzilla.redhat.com/attachment.cgi?id=329532) screenshot w/ fix sample
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--- Comment #10 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 22:17:14 EDT --- Created an attachment (id=329535) --> (https://bugzilla.redhat.com/attachment.cgi?id=329535) screenshot w/ fix sample
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--- Comment #11 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 22:19:12 EDT --- Created an attachment (id=329536) --> (https://bugzilla.redhat.com/attachment.cgi?id=329536) screenshot w/ fix sample
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--- Comment #12 from Caius "kaio" Chance cchance@redhat.com 2009-01-20 22:20:14 EDT --- Created an attachment (id=329537) --> (https://bugzilla.redhat.com/attachment.cgi?id=329537) screenshot w/ fix sample
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--- Comment #13 from Cody Boisclair cody@zone38.net 2009-01-20 22:22:53 EDT --- It looks fine with hinting turned off on my system too; same if I set fontconfig to use auto-hinting. Only if I use bytecode hinting (which is enabled by default in Ubuntu) does it look "wrong".
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--- Comment #14 from Cody Boisclair cody@zone38.net 2009-01-20 22:44:50 EDT --- Created an attachment (id=329538) --> (https://bugzilla.redhat.com/attachment.cgi?id=329538) fixed by copying hinting from "u" in v1.03
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--- Comment #15 from Cody Boisclair cody@zone38.net 2009-01-20 22:46:27 EDT --- Created an attachment (id=329539) --> (https://bugzilla.redhat.com/attachment.cgi?id=329539) Screenshot of fix from attachment 329538
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--- Comment #16 from Cody Boisclair cody@zone38.net 2009-01-20 22:48:04 EDT --- I fixed it by using Edit -> Copy From -> TrueType Instructions to copy the "u" character from version 1.03 to 1.04. The font file itself is in attachment 329538, and a screenshot of how the fixed version appears under bytecode hinting is in attachment 329539. Feel free to adopt this patched version.
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Caius "kaio" Chance cchance@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Blocks| |485746
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Caius 'kaio' Chance cchance@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |CLOSED Resolution| |WONTFIX
--- Comment #18 from Caius 'kaio' Chance cchance@redhat.com 2009-06-30 22:49:41 EDT --- Zap this bug. Please reopen if bug persists after testing on latest version.
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