Your bug report

#77000: grep.in.1: use the macro '.B' for one argument

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 77000@debbugs.gnu.org.

-- 
77000: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=77000
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