Your bug report

#23562: grep seems to write some error messages to stdout data stream --- shouldn't it be to stderr?

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 23562@debbugs.gnu.org.

-- 
23562: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23562
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