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send-email: only consider lines containing @ or <> for automatic Cc'ing

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While the address sanitizations routines do accept local addresses, that
is almost never what is meant in a Cc or Signed-off-by trailer.

Looking through all the signed-off-by lines in the linux kernel tree
without a @, there are mostly two patterns: Either just a full name, or
a full name followed by <user at domain.com> (i.e., with the word at
instead of a @), and minor variations. For cc lines, the same patterns
appear, along with lots of "cc stable" variations that do not actually
name stable@vger.kernel.org

  Cc: stable # introduced pre-git times
  cc: stable.kernel.org

In the <user at domain.com> cases, one gets a chance to interactively
fix it. But when there is no <> pair, it seems we end up just using the
first word as a (local) address.

As the number of cases where a local address really was meant is
likely (and anecdotally) quite small compared to the number of cases
where we end up cc'ing a garbage address, insist on at least a @ or a <>
pair being present.

This is also preparation for the next patch, where we are likely to
encounter even more non-addresses in -by lines, such as

  Reported-by: Coverity
  Patch-generated-by: Coccinelle

Signed-off-by: Rasmus Villemoes <rv@rasmusvillemoes.dk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Rasmus Villemoes 2018-10-10 13:13:50 +02:00 committed by Junio C Hamano
parent af249bfe00
commit fb34fe6a24
1 changed files with 5 additions and 0 deletions
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git-send-email.perl
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@ -1694,6 +1694,11 @@ sub process_file {
next if $suppress_cc{'sob'} and $what =~ /Signed-off-by/i;
next if $suppress_cc{'bodycc'} and $what =~ /Cc/i;
}
if ($c !~ /.+@.+|<.+>/) {
printf("(body) Ignoring %s from line '%s'\n",
$what, $_) unless $quiet;
next;
}
push @cc, $c;
printf(__("(body) Adding cc: %s from line '%s'\n"),
$c, $_) unless $quiet;