Red Hat Bugzilla – Bug 455510
Undisplayable glyphs on Wikipedia
Last modified: 2010-02-01 00:50:19 EST
I did a fresh installation of Fedora 9 using the network install method and
adding Office/Productivity software in addition to the default set. I'm seeing
undisplayable glyphs on the following pages:
I would expect a default installation to be able to display all glyphs that
appear in Wikipedia, so that readers can learn about them. Many non-English
glyphs, even fairly obscure ones, are displayed properly, which is excellent.
It would be nice to finish off the rest. I don't know if this is a flaw in
Pango, if I would need to install additional font RPMs, or something else.
This is with firefox-3.0-1.fc9.i386 and pango-1.20.4-1.fc9.i386.
> I would expect a default installation to be able to display all glyphs that
appear in Wikipedia
Well, Wikipedia will always have characters that cannot be displayed. Simply
because it's always over the edge of what Unicode encodes, while a stable distro
is a bit behind that.
Anyway, font issue.
We gladly accept patches for more glyphs at DejaVu :-) But I don't see us
having a script like Phoenician really...
But I even doubt you could find a Free font for each glyph in Unicode.
DejaVu only accepts modern scripts like Ogham ;)
Let me also note that we are working on a feature for F10 or more realistically
F11 to have a notification box pop up and suggest installing a font whenever a
character cannot be displayed. That may well "fix" this bug.
So I take it I can't solve this problem temporarily by just installing some
I guess you can install a lot of fonts for all kinds of script to solve it for
most scripts. For Phoenician, look at the Aegean font at
http://users.teilar.gr/~g1951d/ for example (no idea if there are rpms
available in Fedora). But don't expect to get *all* glyphs from Unicode (which
defines approximately 100000 different characters) covered by your fonts.
In the mean time, I don't really see much point in distributing fonts for
scripts like Phoenician by default...
also check latest version of "freefont sans"
(In reply to comment #6)
> I guess you can install a lot of fonts for all kinds of script to solve it for
> most scripts. For Phoenician, look at the Aegean font at
> http://users.teilar.gr/~g1951d/ for example (no idea if there are rpms
> available in Fedora).
They're not. New Fedora font packagers are of course welcome.
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I believe this is the new feature that was mentioned: http://fedoraproject.org/wiki/Features/AutoFontsAndMimeInstaller
With Fedora 11 and firefox-3.5-0.20.beta4.fc11.x86_64, I'm still seeing undisplayable glyphs at:
I didn't get any popup or anything saying that an additional font was necessary to display these glyphs; shouldn't I have?
I Googled "freefont sans", but it's unclear to me what I'm supposed to be looking for, Behdad.
(In reply to comment #10)
> I believe this is the new feature that was mentioned:
This feature mostly works for gnome-based apps nowadays. Not sure what firefox uses. You should ask in
Moving to Firefox component as we do have fonts supporting Phœnician in the distro nowadays so it should plug in the autofonts install framework and propose to install them
(@ben: adding Phœnician to dejavu would be nice though)
The only language which doesn't work for me out of the box on www.wikipedia.org is http://cu.wikipedia.org/wiki/ (which is Old Church Slavonic ... the language has not been actively used since 13th Century).
bradford:~$ rpm -qa \*deja\* firefox xulrunner
(In reply to comment #13)
> The only language which doesn't work for me out of the box on www.wikipedia.org
> is http://cu.wikipedia.org/wiki/ (which is Old Church Slavonic ... the language
> has not been actively used since 13th Century).
Sorry, 11th Century http://en.wikipedia.org/wiki/Old_Church_Slavonic :)
(In reply to comment #14)
> (In reply to comment #13)
> > The only language which doesn't work for me out of the box on www.wikipedia.org
> > is http://cu.wikipedia.org/wiki/ (which is Old Church Slavonic ... the language
> > has not been actively used since 13th Century).
> Sorry, 11th Century http://en.wikipedia.org/wiki/Old_Church_Slavonic :)
Nah, this is Church Slavonic (http://en.wikipedia.org/wiki/Church_Slavonic), was used until 17th century and is still used today in church :)
(In reply to comment #15)
> Nah, this is Church Slavonic (http://en.wikipedia.org/wiki/Church_Slavonic),
> was used until 17th century and is still used today in church :)
OK, I stand corrected, but still I think it is not an issue of Firefox. Changing component to the i18n to decide which languages we want to support in Fedora, per default or what to do about this part of Wikipedia.
I don't see any serious problems here with recent Fedora releases.
No we don't have 100% coverage of wikipedia and probably won't
any time soon, but the default font coverage is now good enough
IMHO for most major languages that we can support.
If you want even better support best way is to contribute/
package free fonts and get them reviewed: the Fonts SIG
is there to assist with that. :)