[Fontconfig] about <match> tag

[Deephay]

On Dec 12, 2007 3:48 AM, Behdad Esfahbod <behdad at behdad.org> wrote:
>
> On Tue, 2007-12-11 at 17:30 +0800, Deephay wrote:
> > Greetings all,
> >
> > After reading the manual, I still not very much understand what is the
> > difference of the following two match tags.
> >
> > <match target="pattern">
> > <match target="font">
> >
> > Could anyone give me a example? thanks very much!
>
> Applications typically work like this:
>
>   - Convert user's font request to a fontconfig pattern,
>
>   - Apply fontconfig configuration on it using target="pattern",
>
>   - Get a sorted list of fonts matching that pattern from fontconfig.
> The list is returned as a set of fontconfig patterns itself,
>
>   - Choose the font to use (typically the first one having the requested
> character),
>
>   - Apply fontconfig configuration on the font pattern using
> target="font".
>
>
> So, what it means is that for example if you want to turn off
> antialiasing on Bitstream Vera Sans for sizes less than 7.5, you should
> do that using target="font".  If you do it with target="pattern", it
> will turn off aa for all fonts if the request is Bitstream Vera Sans,
> regardless of whether you have that font installed or not.
>
> If you want to write fallback rules such that DejaVu Sans be substituted
> for Bitstream Vera Sans, that's done with target="pattern", because you
> want to modify the request.
>
>
> Hope that helps,

Thanks a lot, the explanation makes me more clear.

Cheers,
Deephay

>
> > Cheers,
> > Deephay
>
> --
> behdad
> http://behdad.org/
>
> ...very few phenomena can pull someone out of Deep Hack Mode, with two
> noted exceptions: being struck by lightning, or worse, your *computer*
> being struck by lightning.  -- Matt Welsh
>
>