[Fontconfig] Select by name + properties (italic/width)?

[mathog]

On 10-Oct-2012 09:52, Raimund Steger wrote:
>   Arial:weight=200:size=12:slant=100

Ok, that helped.  It is now working as expected with

   arial:slant=100
   arial:weight=200
   arial:size=24

However these came back just like plain "arial":

   arial:width=50
   arial:width=200
   arial:width=ultracondensed

and

   arial normal
   arial condensed

both changed the font to Deja Sans, but glyph widths didn't vary 
(within that font).
It didn't work with "Times" or "Times New Roman" either.

Is there some trick for width/condensed?

Thank you,

David Mathog
mathog at caltech.edu
Manager, Sequence Analysis Facility, Biology Division, Caltech