>> If it still applies, you have tried it and think it's desirable, I can
 >> write ChangeLog and NEWS entries.
 >
 > It still applies, and it works here.  Please go ahead.

It did not apply to current master.  I now built master for the first
time this year, rewrote the patch so it applies and added a short text
to the Elisp manual.  I also enclose a NEWS and a ChangeLog entry.
Please tell me if something is missing and install however you see fit.

Thanks, martin