[Fontconfig] How to limit search to outline fonts

[depp at moria.us]

Hm.  "Outline font" is typically another term for "vector font".  I  
checked the Fontconfig source code, and the "scalable" and "outline"  
attributes are always set to the same value (see  
src/fcfreetype.c:FcFreeTypeQueryFace).

Quoting Mark Wagner <carnildo at gmail.com>:

> On Fri, Oct 1, 2010 at 00:04,  <depp at moria.us> wrote:
>> I'd like to search the fonts on a system by family name, but prefer outline
>> fonts later on the list over bitmap fonts earlier on the list.  For example,
>> for the spec "Courier, DejaVu Sans Mono":
>>
>> ...
>>
>> What am I missing, or is it really that hard to do this?
>
> Since you're contrasting them to bitmap fonts, it sounds like what
> you're looking for is "vector" fonts rather than "outline" fonts.  In
> that case, I think the Fontconfig attribute you're looking for is
> "scalable" rather than "outline".
>
> --
> Mark Wagner
>