Your bug report

#23291: 25.0.92; Inserting unicode in buffer requiring a different font slows down Emacs

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 23291@debbugs.gnu.org.

-- 
23291: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23291
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