Gary Oberbrunner <garyo@oberbrunner.com> writes:
> In git rev e335e1949, back in 2001,
> compilation-parse-errors-filename-function was introduced to
> compile.el, to postprocess filenames. Somewhere in the last few
> months, emacs has stopped calling that function from
> compilation-find-file, so it no longer works. (It's still called from
> a function that now only is used for display, so it doesn't actually
> find the processed filename.)
As far as I can tell, it was never called from compilation-find-file.
Not in e335e1949 that you referenced above, not in 25.3, 25.4, nor 24.3.
In all recent Emacs versions, including latest emacs-26 and master, it
is called from compilation-get-file-structure.
(defun compilation-get-file-structure (file &optional fmt)
[...]
;; If compilation-parse-errors-filename-function is
;; defined, use it to process the filename.
(when compilation-parse-errors-filename-function
(setq filename
(funcall compilation-parse-errors-filename-function
filename)))