Your bug report

#21662: 25.1; visible-bell corrupts screen on Mac OS X 10.11

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 21977@debbugs.gnu.org.

-- 
21662: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21662
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