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Message #07023
[Bug 1769654] Re: Ubuntu 18.04 embedded fonts Liberation have corrupted metrics
** Description changed:
+ [Impact]
+
+ fonts-liberation and fonts-liberation2 in bionic have skewed font metrics. This is causing visible formatting issues in any program rendering text using those fonts, most notably libreoffice (recent versions fail to build because some unit tests that check the rendered layout fail).
+ This was fixed in debian and synced in cosmic (https://salsa.debian.org/fonts-team/fonts-liberation/blob/master/debian/patches/unset_OS2_UseTypoMetrics.patch).
+
+ Backporting to bionic is a prerequisite to backporting a recent version
+ of libreoffice (6.0.6, bug #1785679).
+
+
+ [Test Case]
+
+ See original description (at the bottom of the description) for example
+ text documents and their expected layout when opened in libreoffice.
+
+ A good test case is whether libreoffice 6.0.6 builds successfully (all
+ unit tests pass - some unit tests exercise text layout and they fail
+ with the broken version of fonts-liberation2).
+
+
+ [Regression Potential]
+
+ Rendering of text across a variety of programs (especially word
+ processors and web browsers) should be checked to ensure that this
+ doesn't introduce regressions.
+
+
+ [Other Info]
+
+ This is backported straight from Debian, no Ubuntu-specific
+ modifications.
+
+
+ [Original description]
+
Ubuntu/Xubuntu 18.04 package includes fonts "Liberation Sans" (etc
"Liberation") with sligtly shrinked font metrics. This issue leads to
all office documents typed in Liberation Sans fonts have corrupted
formatting in Ubuntu 18.04 (but these documents correctly opened in
other OS's, for example Ubuntu 17.10). Documents with corrupted
formatting can not print properly: all paragraphs are shifted up,
embedded tables in text - splitted on page breaks. Document circulation
in system based on Ubuntu 18.04 operating systems temporarily paralized,
because Liberation fonts are basic fonts for open-source document
circulation.
In attachment I have type a example office document with 2 pages and
enumerated strings. On normal ordinary conditions this document have 54
strings on first page and 54 string on second page. But if this document
open in Ubuntu 18.04, it's found than 5 strings from second page moves
to first page. Compare font versions embedded with Ubuntu packages we
can see that versions are different (sudo apr search fonts-liberation*
command):
Ubuntu 17.10 - 1:1.07.4-2, 2.00.1-3
Ubuntu 18.04 - 1:1.07.4-5, 2.00.1-5
I have create a bug 117411 "Font metrics slightly changed after update
OS to Ubuntu 18.04", see
https://bugs.documentfoundation.org/show_bug.cgi?id=117411, but I think
that this bug concerns a Ubuntu/Xubuntu 18.04 package.
** Changed in: fonts-liberation (Ubuntu Bionic)
Status: New => In Progress
** Changed in: fonts-liberation2 (Ubuntu Bionic)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1769654
Title:
Ubuntu 18.04 embedded fonts Liberation have corrupted metrics
Status in fonts-liberation package in Ubuntu:
Fix Released
Status in fonts-liberation2 package in Ubuntu:
Fix Released
Status in libreoffice package in Ubuntu:
Confirmed
Status in fonts-liberation source package in Bionic:
In Progress
Status in fonts-liberation2 source package in Bionic:
In Progress
Status in libreoffice source package in Bionic:
New
Status in fonts-liberation package in Debian:
Fix Released
Status in fonts-liberation2 package in Debian:
Fix Released
Bug description:
[Impact]
fonts-liberation and fonts-liberation2 in bionic have skewed font metrics. This is causing visible formatting issues in any program rendering text using those fonts, most notably libreoffice (recent versions fail to build because some unit tests that check the rendered layout fail).
This was fixed in debian and synced in cosmic (https://salsa.debian.org/fonts-team/fonts-liberation/blob/master/debian/patches/unset_OS2_UseTypoMetrics.patch).
Backporting to bionic is a prerequisite to backporting a recent
version of libreoffice (6.0.6, bug #1785679).
[Test Case]
See original description (at the bottom of the description) for
example text documents and their expected layout when opened in
libreoffice.
A good test case is whether libreoffice 6.0.6 builds successfully (all
unit tests pass - some unit tests exercise text layout and they fail
with the broken version of fonts-liberation2).
[Regression Potential]
Rendering of text across a variety of programs (especially word
processors and web browsers) should be checked to ensure that this
doesn't introduce regressions.
[Other Info]
This is backported straight from Debian, no Ubuntu-specific
modifications.
[Original description]
Ubuntu/Xubuntu 18.04 package includes fonts "Liberation Sans" (etc
"Liberation") with sligtly shrinked font metrics. This issue leads to
all office documents typed in Liberation Sans fonts have corrupted
formatting in Ubuntu 18.04 (but these documents correctly opened in
other OS's, for example Ubuntu 17.10). Documents with corrupted
formatting can not print properly: all paragraphs are shifted up,
embedded tables in text - splitted on page breaks. Document
circulation in system based on Ubuntu 18.04 operating systems
temporarily paralized, because Liberation fonts are basic fonts for
open-source document circulation.
In attachment I have type a example office document with 2 pages and
enumerated strings. On normal ordinary conditions this document have
54 strings on first page and 54 string on second page. But if this
document open in Ubuntu 18.04, it's found than 5 strings from second
page moves to first page. Compare font versions embedded with Ubuntu
packages we can see that versions are different (sudo apr search
fonts-liberation* command):
Ubuntu 17.10 - 1:1.07.4-2, 2.00.1-3
Ubuntu 18.04 - 1:1.07.4-5, 2.00.1-5
I have create a bug 117411 "Font metrics slightly changed after update
OS to Ubuntu 18.04", see
https://bugs.documentfoundation.org/show_bug.cgi?id=117411, but I
think that this bug concerns a Ubuntu/Xubuntu 18.04 package.
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