https://bugzilla.redhat.com/show_bug.cgi?id=1526510
Bug ID: 1526510
Summary: USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7
or in ttf binary release
Product: Fedora
Version: 27
Component: liberation-fonts
Assignee: psatpute(a)redhat.com
Reporter: caolanm(a)redhat.com
QA Contact: extras-qa(a)fedoraproject.org
CC: alexl(a)redhat.com, caillon+fedoraproject(a)gmail.com,
caolanm(a)redhat.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
i18n-bugs(a)lists.fedoraproject.org,
john.j5live(a)gmail.com, mbarnes(a)fastmail.com,
mclasen(a)redhat.com, petersen(a)redhat.com,
psatpute(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com
External Bug ID: Document Foundation 114434
Created attachment 1368567
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https://bugzilla.redhat.com/attachment.cgi?id=1368567&action=edit
fontforge os/2 metric table on Fedora for Liberation Serif Regular
Description of problem:
The USE_TYPO_METRICS fsSelection bit
(
https://www.microsoft.com/typography/otspec/os2.htm#fss) is set in Liberation
Serif Regular (probably all of them) under Fedora >= 25 but is *not* set in the
RHEL versions or in the binary releases available at
http://releases.pagure.org/liberation-fonts/liberation-fonts-ttf-1.07.4.t...
Version-Release number of selected component (if applicable):
liberation-fonts-1.07.4-9.fc27
How reproducible:
100%
Steps to Reproduce:
1. (In Fedora) fontforge LiberationSerif-Regular.ttf
2. element->font info->os/2->metrics
3. Example "Really use typo metrics"
Actual results:
its on
Expected results:
its off
Additional info:
If I rebuild the fedora rawhide package on fedora I get the bit set, if I
rebuild under RHEL7 I get the bit set, so the build environment/tools matter in
terms of the results
I think we want this bit off in fedora to match what we have in RHEL and in the
binary releases and what I see in Arimo and Times New Roman (probably best to
confirm that independently)
This matters in that in recent LibreOffice if that bit is on we use the typo
metrics while if its off we use the hhea metrics and for Liberation Serif they
are different enough to mangle starmath equations as per the linked bug
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