On Tue, 15 Oct 2019 13:51:07 +0200
Stephane Ascoet <stephane.ascoet@???> wrote:

> > I would dream of a tool that lets me know what font is in what
> > package.
>
> Hi, I think that <http://packages.debian.org> can do it.

You can extract fonts from programs with the GNU debugger. Simply dump
the virtual memory ranges of the program's objects (Remember X86_64
CPUs are little-endian, and then run the file utility on the dumped
objects to read their magic numbers and filter out objects that are not
fonts.