Sorry I wasn't clear. Joao's suggestion will not work. elisp-flymake--batch-compile-for-flymake invokes byte-compile-file in a subprocess which loads the input file into a fresh buffer with reset buffer locals, negating the parent-process call-site patch's intention. Disabling no-byte-compile has to happen in elisp-flymake--batch-compile-for-flymake to influence byte-compile-file. I've used a new defvar to let bind in the spirit of bytecomp--inhibit-lexical-cookie-warning. I've attached a patch that works for me, along with an appropriate commit log message. -Stephane On Tue, Jan 21, 2025 at 5:07 PM Stefan Monnier wrote: > > Would be great to adopt the simple flymake change in master, > > Do I understand correctly that you tried it and it worked for you? > > > Stefan > >