[Fontconfig-bugs] [Bug 101270] please do not register WOFF(2) fonts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101270

--- Comment #16 from Keith Packard <keithp at keithp.com> ---
(In reply to Behdad Esfahbod from comment #15)
> I'm fine with adding a FC_CONTAINER or another way to differentiate WOFF /
> WOFF2 / SFNT.  But I like to thing through it a bit more before rushing to
> implementing.

In the case I saw, the font package installed *both* ttf and woff fonts. The
intent being that the woff fonts would be served by the web server and the ttf
fonts used by local applications. 

In this case, preferring the ttf format to the woff format would make
applications not using freetype (and it's built-in woff support) to end up
using the ttf font. It's slightly annoying that applications don't just support
woff fonts natively; who knows, there may be fonts distributed in only that
format.

Hiding woff fonts from all fontconfig-using applications is clearly a bad idea.
Telling applications about the container format so they can skip things they
don't support seems like the best we can do.

For font packages installing both ttf and woff files, it would probably be
better if they found a different place to install the woff fonts to avoid this
problem, but I'm not sure where that would be -- woff fonts that aren't
duplicates clearly need to be in /usr/share/fonts so that applications can use
them, after all.

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