Re: [ft] Fontconfig Gotcha

[Werner LEMBERG]

> Fontconfig is a wonderful API for doing flexible
> font-matching. Given a pattern which can contain any of a whole
> range of different criteria (e.g. family name, slant, weight,
> decorative style), it will find the most suitable font from those
> installed on the system.
> 
> Having found a FreeType font, Fontconfig provides the call
> FcFreeTypeQueryFace, which will construct a very elaborate pattern
> that, I assumed, would match exactly that font again.
> 
> However, it never seemed to work: trying to use that pattern to
> search for fonts would always fail with no matches.
> 
> Today, I figured out that the problem seems to come from the
> inclusion of the “lang” and “charset” criteria in the returned
> pattern: the values for these tend to consist of long lists of items
> separated by “|” characters. But remove them, and the resulting
> pattern will correctly find the font again.

Is this a bug?  Then please report to the fontconfig people.  Or maybe
it's just a documentation issue, then you should report to the
fontconfig people also :-)


    Werner