Your bug report

#20657: Traditional range expression not accepted in regex/dfa

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 20657@debbugs.gnu.org.

-- 
20657: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=20657
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