Am Di., 22. Apr. 2025 um 17:30 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:

> > From: Johann Höchtl <johann.hoechtl@gmail.com>
> > Date: Tue, 22 Apr 2025 17:11:49 +0200
> > Cc: eliz@gnu.org, visuweshm@gmail.com, 77732@debbugs.gnu.org
> >
> > I extracted grep.el from grep.el.gz
> > I loaded the patch and applied it to grep.el
> > The hunks applied successfully
> >
> > I retried my rgrep opperation and got this in messages:
> >
> > Source file
> ‘c:/Users/HoechtlJ/AppData/Local/Emacs/share/emacs/31.0.50/lisp/progmodes/grep.el’
> newer
> > than byte-compiled file; using older file
> > Making completion list...
> > compilation-start: Symbol’s value as variable is void:
> grep-compilation-transform-finished-rules [2 times]
> >
> > So I renamed grep.el.gz to grep.elgz.o and grep.elc to grep.elc.o
> >
> > Still no luck but the compilation error remains compilation-start:
> Symbol’s value as variable is void:
> > grep-compilation-transform-finished-rules
> >
> > A new native byte compiled version of grep.el was created though.
> >
> > Is the compilation error actually misleading? It seems as if I get the
> error
> >
> > Source file
> ‘c:/Users/HoechtlJ/AppData/Local/Emacs/share/emacs/31.0.50/lisp/progmodes/grep.el’
> newer
> > than byte-compiled file; using older file
> > Making completion list...
> > compilation-start: Symbol’s value as variable is void:
> grep-compilation-transform-finished-rule
> >
> > using older file would indicate that it is using grep.elc but it seems
> Emacs does in fact use the NEW pathed
> > grep.el
>
> To save yourself from all this trouble, patch grep.el in the source
> tree, and then say "make install".  This will compile the patched
> grep.el and will install it in the correct place.
>

Would have to do that on Linux, the Windows machine is not apt for any
serious development. Maybe I can get around that hassle ..