No problem,
*  Michael Heerdegen <michael_heerdegen@web.de> <87seug85hh.fsf@web.de>
Wrote on Wed, 04 Sep 2024 05:25:46 +0200
> Could you please post a recipe and a backtrace for this second problem?

```
emacs -Q -l f.el
```

produces the backtrace in the file backtrace.txt with the match-data
clobbered error. At this point (i.e. after the error occurs) if I do
"M-x load-library wdired", then a subsequent replace-regexp operation
succeeds.  However in a long running emacs I believe I still see the
match-data clobbered error crops up again, I'm keeping a lookout on
what might be triggering that.