revision 898ff84edac285a72ed9c15689c490b2a62af812
Debian 13 brought emacs 30.1, and when using flymake-mode I get an extra 2 characters left margin that is used for errors. It's disturbing.
Information about that variable
https://lists.libreplanet.org/archive/html/bug-gnu-emacs/2025-11/msg00796.html