TeXmacs with Guile 2.2: How-to debug.

A short demo to show how I use Emacs gdb to run TeXmacs during development phases of getting it to run with Guile 2.2.

I neglected to demonstrate, in the video, how to connect to the Guile repl server that is running in the background as long as it's there... Switch to the "Geiser" Guile repl buffer if one is already open, and then kill it. Then use M-x connect-to-guile, and it will open a new Geiser repl buffer connected to the running TeXmacs. Geiser can be installed using the Emacs packages system.