Re: Video generation on linux systems: Note and rests change color

[Knut Petersen]

Hi Karlin!

> I got some font errors during the lilypond compile: "warning: no glyph
> for character U+9F in font [...] ./texgyreschola- [*]" (Square brackets
> with placeholders for brevity.) Looks my setup is choking on the German
> ß sharp-S thing.

Lilypond handles utf-8 characters, and the texgyre fonts include those 
characters.
Your font setup seems to be seriously broken.

> Hmm... if everything else is the same after patching, any chance this
> could be included in the standard lilypond code? Or maybe that's what
> you have in mind, and just want more people to try it out first? I think
> this would be a great feature to have standard.

Yes: It would be nice if lilypond could produce videos.

No: I don't think that this code should be part of lilypond. Although it works 
pretty
well for me I have to admit that it is a hackish solution of a problem I had. 
Maybe
it would be a good idea to introduce some additional hooks into lilypond that 
would
eliminate the need to patch lilypond. But contributing code to lilypond is 
complex
and time-consuming.


> All the dependencies, though... might be a bit much to include in the
> standard lilypond setup?

Yes.

> And it turns out Debian does not have usleep but rather sleepenh. I
> ended up doing...
>
> ln -s /usr/bin/sleepenh /usr/bin/usleep

Thanks for reporting.

> Is there a way to set a path for the patched lilypond when running the
> mkvideo script? Or a definition to edit somewhere? I looked around a
> little in the mkvideo code, but my limited bash script skills didn't
> pick anything up.

Patching some scm/ps files definitely does not change the lilypond binary.
No need to change  PATH.

If you want to keep separate set of patched and unpatched files you could use
 "lilypond -ddatadir=/path/to/set/"  to use that set not used by default.

Knut