GNU bug report logs - #70873
join --return-error-if-any-unmatched-lines

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From: Dan Jacobson <jidanni <at> jidanni.org>
To: 70873 <at> debbugs.gnu.org
Subject: bug#70873: join --return-error-if-any-unmatched-lines
Date: Sat, 11 May 2024 17:14:58 +0800

join should have an option to return an error value in the shell's $?
if any lines are not matched.

Currently the man page doesn't even mention a return value. So it is not
set in stone yet.

Currently one must save -v output in a file then use test -s do detect
if there were any non-matched lines. And then exit one script with
non-zero. Big hassle.

join (GNU coreutils) 9.4

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