Your bug report

#28258: 26.0.50; [PATCH] Let file-name-base succeed when buffer-file-name is nil

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 28258@debbugs.gnu.org.

-- 
28258: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28258
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