My setup:
Debian Stretch with MATE Desktop.
Tcl/Tk 8.6 from Debian repository.
[misc Tcl/Tk tools which caught my attention]
I installed 'filerunner' [
https://sourceforge.net/projects/filerunner/].
Then, using the MATE tool, I changed the size of every font. There was
no difference in what filerunner displayed.
{See my thread "Setting Tk default font sizes system wide". I was given
a workaround for my symptom and thus consider _that thread_ closed.}
That left me realizing that I do not understand the interaction of
system font descriptions and what Tk does.
My primary request is for suggested reading(s).
A keyword based web search is less than satisfactory as there is no
indication of quality &/or relevance. I followed links unto the 3rd/4th
generation. It demonstrated how little I knew/understood.
Is there a published script designed to:
Display available fonts.
Use only system defined fonts
Run under any Linux distro/desktop.
I suspect there is a bug, be it Tk/OS/Desktop/PEBCAK/application script.
TIA