Re: Format of -dshow-available-fonts output

[Aaron Hill]

On 2018-07-17 02:27, Urs Liska wrote:
> Hi, when running with the -dshow-available-fonts option I get (among
> others) a list of font familes with entries like the following:
>
> family Verdana
>
> Verdana:style=Standard,Normal,obyčejné,Κανονικά,Regular,Normaali,Normál,Normale,Standaard,Normalny,Обычный,Normálne,Navadno,Arrunta
> family Kepler Std
>  Kepler Std,Kepler Std Light Cn Disp:style=Light Condensed 
> Display,Regular
>
> What do the different output formats refer to: some with a ":style="
> part, some with direct font names.
>
> And in some cases I find multiple entries for a font family
>
> family Helvetica LT Std
>  Helvetica LT Std:style=Oblique,Italic
> family Helvetica LT Std
>  Helvetica LT Std,Helvetica LT Std Cond:style=Bold Condensed,Bold
> family Helvetica LT Std
>  Helvetica LT Std,Helvetica LT Std Cond:style=Condensed,Regular
>
> (with many more entries in this case).
>
> And these mixes of font name conventions:
>
> family Helvetica Neue LT Std
>  Helvetica Neue LT Std,HelveticaNeueLT Std Cn:style=77 Bold Condensed
> Oblique,Bold Italic
>
> I'm somewhat confused what to make out of this diverse information.
>
> I'm looking into this because I'd like to try making a better dialog
> for showing fonts in Frescobaldi.

Here is documentation on FontConfig's naming convention:

https://www.freedesktop.org/software/fontconfig/fontconfig-user.html#AEN36

LilyPond's output is similar to what you get from `fc-list : family 
style`.

Oddly, LilyPond has support to show the file path for a font, but it 
doesn't select that property when building the object set.  In 
font-config-scheme.cc:85 (as of 2.19.82), the call to FcObjectSetBuild 
probably should include FC_FILE as well.

On your system, try running `fc-list : file family style`.  You can see 
if the file paths are unique for the apparent duplicates you are seeing, 
which is what I would expect to be the case.

-- Aaron Hill