48756 - Mozilla is confused by ucs-fonts (iso10646)

Status: RESOLVED DUPLICATE of bug 46974

(Core :: Internationalization, defect, P3)

Description

[edmundo]

In various places, including the URL box, Mozilla displays double-
width empty boxes instead of us-ascii characters when I have
Markus Kuhn's Unicode fonts on my font path. These fonts have
"iso10646" in their names, and the problem occurs even if I remove
the fonts.alias which maps them to traditional names. (The fonts
should be compatible with the older fonts anyway.)

I've seen the problem with M17 and with Debian's version of M16.
I didn't seen the problem with Debian's version of M15.

Comment 1

[edmundo]

In [e-mail] Markus Kyhn wrote:
Could this be the ancient GTK+ 1.2 bug, namely that they load the
default fonts with an encoding of *-*, and if they get a font that
contains a single character > 0x255, they treat everything like a JIS
font with EUC decoding? The fix in this case is to explicitly specify
that you want to have *-iso8859-1 fonts, otherwise the *-iso10646-1
fonts come earlier in the alphabetic list of fonts, get therefore
selected and activate the brain-dead JIS font machinery in GTK+ 1.2.

This hypothesis was confirmed by an experiment. The problem disappears
if the following font is removed:
-Adobe-Helvetica-Medium-R-Normal--12-120-75-75-P-67-ISO10646-1

Comment 2

[Doron Rosenberg (IBM)]

asa - who is our debian person?

Comment 3

[Joseph Elwell]

If someone chooses "Winddings" as their default font, and then complained that 
all their URL's looked like bats, and cars, then we'd mark wontfix.

edmundo: It sounds like you've installed a font that doesn't support all the 
characters we output...

Comment 4

[edmundo]

No, Joseph, my font has all of iso-8859-1 plus a lot of other characters.
Read Markus Kuhn's comment; this is an old and well-known bug.
Markus also wrote: "The fix must be in the application: Either say that
you want ISO8859-1, or make sure that if you get a 16-bit font, that you
can handle if it turns out not to be a JIS font."

Comment 5

[Asa Dotzler [:asa]]

setting bug status to new over to Erik and Ian

Comment 6

[Asa Dotzler [:asa]]

updating qa contact.

Comment 7

[Erik van der Poel]

*** This bug has been marked as a duplicate of 46974 ***