Your bug report

#66187: read-file-name unexpected behavior when MUSTMATCH is a function

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 66187@debbugs.gnu.org.

-- 
66187: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=66187
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