[Bug 952778] New: Unable to render combining accent with some characters under KDE

bugzilla at redhat.com bugzilla at redhat.com
Tue Apr 16 16:42:07 UTC 2013


Product: Fedora
https://bugzilla.redhat.com/show_bug.cgi?id=952778

            Bug ID: 952778
           Summary: Unable to render combining accent with some characters
                    under KDE
           Product: Fedora
           Version: 18
         Component: liberation-fonts
          Severity: unspecified
          Priority: unspecified
          Assignee: psatpute at redhat.com
          Reporter: bugs at wormhole.me.uk
        QA Contact: extras-qa at fedoraproject.org
                CC: fonts-bugs at lists.fedoraproject.org,
                    i18n-bugs at lists.fedoraproject.org,
                    petersen at redhat.com, psatpute at redhat.com
   External Bug ID: KDE Software Compilation 315642
          Category: ---

In https://en.wikipedia.org/wiki/Stress_%28linguistics%29 the following strings
occur:

«земли́ (genitive of "earth, land") vs. зе́мли (plural of "earth, land") in
Russian»
«In Russian and Ukrainian dictionaries, stress is indicated with an acute
accent (´) on a syllable's vowel (example: вимовля́ння)»

In all the native KDE/Qt applications I've tried, these combining acute accents
display as empty rectangles. The problem only occurs with Liberation and Ubuntu
fonts, and it doesn't occur with GTK-based applications such as Firefox when
run on the same KDE platform. (I haven't tested Ubuntu fonts with Fedora as
they're not installed by default.) It seems there's some combination of
problems with these fonts and with KDE or Qt.

To reproduce the problem in Konqueror, display the above Wikipedia article then
go to Settings / Configure Konqueror menu, then under Web Browsing, Appearance
entry, Fonts tab. For Sans serif font, select Liberation (note the default is
DejaVu); click OK or Apply. To reproduce while displaying bugzilla.redhat.com
(e.g., this bug report!), change Fixed font instead.

I've created a small HTML file here:
http://bugsfiles.kde.org/attachment.cgi?id=77513 which demonstrates the problem
(not confined to Cyrillic characters), and also shows a couple of characters
which display correctly. Change the Standard font in Konqueror to demonstrate
the problem.

To reproduce the problem in Konsole, download the file and cat it. Go to
Settings/Edit Current Profile, Appearance tab and click Select Font. Note it's
not necessary to click Apply or OK after selecting the font; all instances of
Konsole update their font dynamically as you select it.

I've reported the problem against KDE and Ubuntu fonts here:

https://bugs.kde.org/show_bug.cgi?id=315642
https://bugs.launchpad.net/ubuntu-font-family/+bug/1131890

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