[3.9] bpo-44852: Support filtering over warnings without a set message (GH-27793) #27810
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Additional improvements:
messages which were compiled regular expressions aren't unpacked back into
strings for unmatched warnings;
removed unnecessary "if tokens:" check (there's one before the for loop);
took
endswith
calculation out of the for loop.(cherry picked from commit 8cf07d3)
Co-authored-by: Łukasz Langa lukasz@langa.pl
https://bugs.python.org/issue44852