Re: warning: no glyph for character ... in font ...

[Jean Abou Samra]

Le 27/10/2022 à 15:09, Federico Bruni a écrit :
> Can anybody explain what this warning is about?
>
> Parsing...
> Interpreting music...[8][16][24][32]
> Preprocessing graphical objects...
> warning: no glyph for character U+279B in font 
> `/usr/share/fonts/urw-base35/C059-Roman.otf'
>
> The character is the one defined in this snippet:
> https://lsr.di.unimi.it/LSR/Snippet?id=879
>
> I get these warnings only when building a score within a toolbox 
> container; it doesn't happen in a regular terminal. It's annoying 
> because it's printed several times. I'm trying to reduce "false" 
> errors in order to easily spot the real issues.
>
> I guess it's something related to Fontconfig settings in the container.




Well, it means what it says -- the font C059 (New
Century SchoolBook), which is LilyPond's default text
font, does not have this glyph. If I compile

\version "2.23.80"

\markup \char ##x279B

\header {
  tagline = ##f
}


and run 'pdffonts' on the resulting PDF file, I get

name                                 type encoding         emb sub uni 
object ID
------------------------------------ ----------------- ---------------- 
--- --- --- ---------
ZEHBZK+FreeSerif                     TrueType WinAnsi          yes yes 
yes      7  0


Since C059 does not have a glyph for this character, Fontconfig
automatically substitutes some font from the system that does have
this character, according to LilyPond's font configuration file
and the system-wide configuration file.

If you run LilyPond in an isolated environment, it needs to contain
some font with this character, visible by Fontconfig.

Best,
Jean