Re: How to determine if a font is a fallback font?

[Alexander Kobel]

On 2015-04-28 12:18, Werner LEMBERG wrote:
> On my openSuSE GNU/Linux box, I get different results.
>
> > Given font name: Emmentaler-13
> > Determined font file: /usr/share/fonts/TTF/mplus-1c-medium.ttf
> > Actual font in that file: mplus-1c-medium
> > Given font is present: #f
>
>    Given font name: Emmentaler-13
>    Determined font file: 
> /usr/local/share/lilypond/2.19.16/fonts/otf/emmentaler-13.otf
>    Actual font in that file: Emmentaler-13
>    Given font is present: 
> #t/usr/local/share/lilypond/2.19.16/fonts/otf/emmentaler-13.otf
>    Emmentaler-13
>
> > Given font name: Alegreya
> > Determined font file: /usr/share/fonts/TTF/mplus-1c-medium.ttf
> > Actual font in that file: mplus-1c-medium
> > Given font is present: #f
>
>    Given font name: Alegreya
>    Determined font file: /usr/share/fonts/truetype/Alegreya-Regular.ttf
>    Actual font in that file: Alegreya-Regular
>    Given font is present: #f/usr/share/fonts/truetype/Alegreya-Regular.ttf
>    Alegreya-Regular
>
> Note that `ly:ttf-ps-name' returns the font's *PostScript* name.  This
> is *not* what fontconfig normally operates on (but see below).

I see. It's the same situation when I ask for "Alegreya-Regular" or 
"DejaVuSans", though. No change at all.
Also, I wonder why M+ is offered in my case; because of

address@hidden ~/test % fc-match FOOBAR
DejaVuSans.ttf: "DejaVu Sans" "Book"
address@hidden ~/test % fc-list --version
fontconfig version 2.11.1

BTW, on my Debian stable, I get:

~/test % fc-match FOOBAR
Vera.ttf: "Bitstream Vera Sans" "Roman"
~/test % fc-list --version
fontconfig version 2.9.0

while the test.ly offers KanjiStrokeOrders as a substitute for what it 
cannot find.

> Since FontConfig version 2.11 (released October 2013), however, it is
> possible to search for PostScript names also.  Example:
>
>    $ fc-match "Alegreya"
>    Alegreya-Regular.ttf: "Alegreya" "Regular"
>
>    $ fc-match "AlegreyaRegular"
>    arial.ttf: "Arial" "Normal"
>
>    $ fc-match ":postscriptname=AlegreyaRegular"
>    Alegreya-Regular.ttf: "Alegreya" "Regular"

Ditto (on Arch, with FC 2.11.1).


Alexander