Hello Keith,
Wow, immediate response again! I'm really amazed! Many thanks! :-)
On Tue, Feb 11, 2003 at 11:04:26AM -0800, Keith Packard wrote:
> > Would it be a good idea, if a font already contains a valid
> > Unicode CMap (e.g. Format 4 and/or 12), that CMap 0 be ignored
> > altogether? There appears to be more buggy fonts out there on the
> > market than we would like. Anyhow, I have no preference either
> > way, so, you make the call. :-)
>
> Fonts are also broken in the other direction -- they contain both Unicode
> and Apple Roman mappings, but the Unicode mapping doesn't map Latin glyphs
> while the Apple Roman mapping cannot cover the glyphs available in the
> font. Suggestions for how to figure out the right mapping are welcome...
I didn't know that. Yikes!
Meanwhile, for my part, I have been exchanging e-mail messages with the
respective font vendors asking them to fix these bugs. Fortunately,
they have been quite responsive. Microsoft's Font Validator has been
helpful, and ftview, TTX/FontTools are lifesavers.
> > A visual check with ftview showed that the glyph indices are off by 26
>
> I have a vague recollection of having fixed a bug like this. Can you
> report which versions of the X server, Xrender, Xft and fontconfig you are
> using?
On Debian unstable, XFree86-4.2.1; Xft-2.1, fontconfig-2.1, probably without
updates from the CVS except:
fontconfig (2.1-14) unstable; urgency=low
* debian/patches/CVS-HEAD-subpixel-rendering-fix.patch:
- New patch, should fix crashes when subpixel rendering is
turned on (Closes: #175903). Big thanks to
Michael Guntsche <mike@xxxxxxxxxxxx> for extracting the relevant fix
from CVS!
-- Colin Walters <walters@xxxxxxxxxx> Fri, 10 Jan 2003 13:30:28 -0500
BTW, how do I check the Xrender version? :-) (XFree86 says something
about "XFree86 Font Renderer : 0.3". Is that the same thing? :-)
By the way, where may I find the latest CVS of fontconfig and Xft?
It seems that fontconfig in :pserver:anoncvs@xxxxxxxxxx:/local/src/CVS
isn't the newest.
> > There are a few other Mozilla Xft issues as seen on Bugzilla. The
> > "disappearing text when with switching fonts" happens on my Debian
> > sid/unstable system (XFree86 4.2.1, with XRender).
> > ...
> > However, everything looks and works okay on Red Hat 8.0 and Phoebe.
>
> I suspect RH has incorporated various fixes from current XFree86 CVS which
> haven't made it into Debian unstable yet. Please give current CVS a try
> and see what happens there.
Good idea. I should try that.
Thanks again for your help,
Anthony
--
Anthony Fok Tung-Ling
ThizLinux Laboratory <anthony@xxxxxxxxxxxxx> http://www.thizlinux.com/
Debian Chinese Project <foka@xxxxxxxxxx> http://www.debian.org/intl/zh/
Come visit Our Lady of Victory Camp! http://www.olvc.ab.ca/
