Your bug report

#15264: 7z-Archive mode doesn't support 7za?

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 15264@debbugs.gnu.org.

-- 
15264: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15264
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