Re: Font selection algorithm?

[Robert Siemer <Robert Siemer-i18n backsla sh>]

On 01/19/2010 04:18 AM, Behdad Esfahbod wrote:
> On 01/18/2010 12:50 AM, Robert Siemer wrote:

> > It is really hard to improve the configuration (through fontconfig),
> > without knowing which font request pattern to intercept. -- Even in a
> > specific app with FC_DEBUG set it is hard fish the right request chain.
>
> Something like:
>
> $ fc-match --sort "sans:lang=fa"
>
> is all you need to check.


So Pango does at most one fontconfig request for each given text? So to 
avoid missing characters it requires a corresponding fontconfig 
configuration, and does not launch adapted requests for e.g. 
"sans:lang=someotherlang" or "sans:charset=..."?

In the example above: is the "sans" the default in Pango if not 
overwritten in the app? Or is the default the empty pattern?

In a standard gtk/gnome app, the ":lang=..." part comes from the current 
locale or is it text driven?


Thanks again,
Robert