Your bug report

#19896: 23.1; reverse-region is slow compared to sort-columns

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 19896@debbugs.gnu.org.

-- 
19896: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19896
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