Your bug report

#29389: C-x b oc<TAB> couldn't find "*Occur*" buffer

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 29389@debbugs.gnu.org.

-- 
29389: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29389
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