[Fontconfig] Pango support for `size' OpenType feature?

[Khaled Hosny]

On Sat, Sep 08, 2012 at 11:05:58PM -0400, Behdad Esfahbod wrote:
> On 09/08/2012 02:44 AM, Werner LEMBERG wrote:
> > 
> > As the subject says: Does Pango support the `size' OpenType feature?
> 
> No.
> 
> The only Free Software font family I can think of that can use the 'size'
> feature is Computer Modern.  And I don't think any of its OpenType renditions
> have that feature set.

Latin Modern have it. Linux Libertine have a display version but no
'size' feature, and EB Garamond have several optical sizes with a 'size'
feature.

> At any rate, it can easily go into Fontconfig.  We just need to add an element
> for design size, perhaps one for the design range, possibly for design name,
> and then make the matcher match the font with design size closest to requested
> size...

There are name ID associated with 'size' features and FontConfig needs to
take them into account.

Regards,
 Khaled