Re: [PATCH] (Draft2) Make X11 server-side fonts and Mule suck less.
Ar an triú lá de mí na Samhain, scríobh stephen(a)xemacs.org:
Aidan Kehoe writes:
> There’s less round-tripping in this implementation than in the
> previous one. Previously, matches would be tried against the
> XListFonts results with wildly inappropriate (to this Mule charset)
> things in the X11 charset registry; now, the registry is modified
> before calling XListFonts, so we never move through a list of
> fallbacks that can never have a successful regex match for the Mule
> charset in question.
No, there's less testing of the registry spec against actual fonts;
but as I understand the code, XListFonts should only be called once.
That’s not the case. If there isn’t a match--as will be the case if a
Japanese font is looked up and the X11 platform code has initialised the
default face’s specifier to -*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*
--the specifier instantiation code tries the face’s fallback patterns,
calling XListFonts for each one. In the X11 code as it stands, for a charset
that isn’t available at all in the X server, this means 128 times, often
with patterns like:
"-*-courier-medium-r-*-*-*-*-*-*-*-*-iso10646-1",
"-*-fixed-medium-r-*-*-*-*-*-*-*-*-iso10646-1",
"-*-courier-*-r-*-*-*-*-*-*-*-*-iso10646-1",
"-*-fixed-*-r-*-*-*-*-*-*-*-*-iso10646-1",
"-*-*-medium-r-*--*-gb2312.1980-*",
"-*-fixed-medium-r-*--*-cns11643*-*",
"-*-fixed-medium-r-*--*-big5*-*,"
"-*-fixed-medium-r-*--*-sisheng_cwnn-0",
which are a _total_ waste of time for Ethiopic or the IPA, especially since
that no font will support those scripts is _entirely expected._
> > [...] Well, yes, but is it such a good idea that we
should make
> > work for others? That's one of my pet peeves with GNU.
>
> IMO incorporating that change would make their code base more
> understandable and would be a positive change, just as it would be in
> ours. I don’t think providing a prompt to do useful work is specious
> or thoughtless.
Er, who says they'll think it's useful?
Maybe my judgement is really bad; in which case I shouldn’t be committing to
XEmacs. But if my judgement is reasonable, and I think the work useful,
then that’s the closest I can come to predicting that they will too, in the
absence of unknown or undocumented philosophical differences with them.
--
Santa Maradona, priez pour moi!
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