Angel de Vicente <angel.vicente.garr...@gmail.com> writes: > Hello, > > I've been using this command for ages, but yesterday I did upgrade my > system, and now it has stopped working. I wonder if anybody has seen > this error and/or has some advice on fixing it. > > When using the command gnus-summary-followup-with-original, I now get a > reply buffer without the original mail text, and a message in the > minibuffer that reads: > > ,---- > | save-restriction: Symbol’s function definition is void: > nnheader-parse-naked-head > `---- > > My Emacs and Gnus versions are: > > + GNU Emacs 28.1 (build 1, x86_64-pc-linux-gnu) of 2022-04-27 > + Gnus v5.13
That's kind of looking like an out-of-date third party package, though it's hard to be sure. You mention upgrading your system, and Emacs was a part of that system upgrade, right? (Meaning, you're not running Emacs from its development repository?) Try running M-x toggle-debug-on-error and triggering that error again -- that should show us what is calling `nnheader-parse-naked-head'.
