On 19 Apr 2025, at 21:28, Mattias Engdegård <mattias.engdegard@gmail.com> wrote:

Perhaps it's compilation-filter-hook that really should be used to filter it out, and other sequences like it?

That also seems like an appropriate solution.

Is there precedence for solution like in place already?

This hook would be the most obvious thing to use if the stray sequence is emitted by a different layer and risks appearing in different contexts. For example, one could write something like

(defun stray-msbuild-seq-compilation-filter ()
(defvar compilation-filter-start)
(let ((begin compilation-filter-start)
       (end (point))
       (inhibit-read-only t))
   (save-excursion
     (goto-char begin)
     (while (re-search-forward (rx bol "\e=") end t)
       (delete-region (match-beginning 0) (match-end 0))))))

and then add that function to compilation-filter-hook.

Just to be clear and to make sure I understand: Do you suggest I test that hook locally and if it works, propose that as a patch? If so, should I add it to compile.el? Or were you suggesting something else?

I see that in the entirety of the current Emacs code-base, there are only 4 implemented hooks of this kind, and they are kinda spread around all over (follow.el, grep.el, so-long.el).