Re: Lilypond taking forever to typeset

[Masamichi Hosoda]

> I've noticed this one-time startup delay as well on Windows (7 and 8) and
> found that it got triggered anytime I changed the contents of the system
> font folder (C:\Windows\Fonts), whether adding or deleting a file. At the
> next time of compiling a LilyPond file, a new font-cache database would be
> created in "C:\Users\[MYUSERNAME]\.lilypond-fonts.cache-2" (note the
> initial period in the directory name). If I clear the contents of this
> folder, the initial delay comes up again to create a new database file. I
> suspect that this directory can be found across OSs in a similar location
> in the user's main directory, but I haven't confirmed this.

For the LilyPond website binary (GUB-generated binary),
fontconfig cache directory is `~/.lilypond-fonts.cache-2`.

https://github.com/gperciva/gub/blob/87efb1105d976dfbecf8f3c9c6c9c869a2158bbb/gub/specs/lilypond.py#L130

For other binaries,
fontconfig cache directory seems to be the default of fontconfig.
e.g. `~/.cache/fontconfig` etc.