Your bug report

#22101: Emacs-25: inaccuracy in documentation of `mapconcat' in .../lispref/functions.texi

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 22101@debbugs.gnu.org.

-- 
22101: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22101
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