Your bug report

#76023: 31.0.50; Observed behavior for substitute-in-file-name different from the doc string

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 76023@debbugs.gnu.org.

-- 
76023: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=76023
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