[Fedora-i18n-bugs] [Bug 1526510] New: USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

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: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail],
                    [e-mail],
                    [e-mail],
                    [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail]
   External Bug ID: Document Foundation 114434

Created attachment 1368567
  --> 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.tar....

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

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #1 from Caolan McNamara  ---
Created attachment 1368568
  --> https://bugzilla.redhat.com/attachment.cgi?id=1368568&action=edit
same font, built on RHEL-7 without the bit set

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

Pravin Satpute  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|[e-mail]         |[e-mail]

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #2 from Pravin Satpute  ---
We are planning to rename liberation-fonts-1.07.4-9.fc27  as
liberation-classic-fonts.

So i think this patch should go in https://pagure.io/liberation-classic-fonts.

May be need to check for liberation-fonts-2.00.1 as well for this.

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|[e-mail]         |[e-mail]

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #7 from Caolan McNamara  ---
Copy the RHEL-7 LiberationSerif-Regular.ttf to a fedora >= F25 box and open it
with fontforge on that platform and the flag will be shown as unset. Using the
same Fedora fontforge on the Fedora LiberationSerif-Regular.ttf will show that
the flag is set in the Fedora version.

Yes, the RHEL-7 fontforge appears to claims that the bit is set, but with a
hexeditor/hexdump it can be verified that the bit is not set in the RHEL
LiberationSerif-Regular.ttf and is set in the Fedora
LiberationSerif-Regular.ttf

i.e. the RHEL fontforge is telling fibs and the Fedora one is telling the
truth.

I assume its probably a bug in RHEL-7 fontforge that OS2_UseTypoMetrics doesn't
seem to set the right bit in the .ttf when the sfd is converted to ttf, and
probably the same bug that the ui claims that the .ttf does have the bit set.

So I guess OS2_UseTypoMetrics handling got fixed at some point, so the bit
started getting set correctly in Fedora with more recent fontforge, and I think
that the (accidental) lack of the bit in RHEL (and the binary .ttf releases)
matches by chance the desired state the fonts should be in

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #8 from Caolan McNamara  ---
maybe something like
https://github.com/fontforge/fontforge/commit/e870019c2602d50eb00793e979f3e1...

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #9 from Parag Nemade  ---
Thank you Caolan for your brief reply.

I have now generated scratch build
https://koji.fedoraproject.org/koji/taskinfo?taskID=23779983 for Fedora.

If anyone want to test it please test them, I will push the fix into the f27+
releases in next 2 days.

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

--- Comment #10 from Fedora Update System  ---
liberation-fonts-1.07.4-10.fc27 has been submitted as an update to Fedora 27.
https://bodhi.fedoraproject.org/updates/FEDORA-2017-551b13319e

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |MODIFIED

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |ON_QA

--- Comment #11 from Fedora Update System  ---
liberation-fonts-1.07.4-10.fc27 has been pushed to the Fedora 27 testing
repository. If problems still persist, please make note of it in this bug
report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here:
https://bodhi.fedoraproject.org/updates/FEDORA-2017-551b13319e

[Fedora-i18n-bugs] [Bug 1526510] USE_TYPO_METRICS set in Fedora 2X but not set in RHEL7 or in ttf binary release

https://bugzilla.redhat.com/show_bug.cgi?id=1526510

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ON_QA                       |CLOSED
   Fixed In Version|                            |liberation-fonts-1.07.4-10.
                   |                            |fc27
         Resolution|---                         |ERRATA
        Last Closed|                            |2017-12-27 21:52:19

--- Comment #12 from Fedora Update System  ---
liberation-fonts-1.07.4-10.fc27 has been pushed to the Fedora 27 stable
repository. If problems still persist, please make note of it in this bug
report.