send-email: fix threaded mails without chain-reply-to
commitf74fe34b96816bad1f568202ec51ef18ae7513b3
authorMarkus Heidelberg <markus.heidelberg@web.de>
Fri, 12 Jun 2009 10:51:41 +0000 (12 12:51 +0200)
committerJunio C Hamano <gitster@pobox.com>
Fri, 12 Jun 2009 16:22:15 +0000 (12 09:22 -0700)
tree7c612429c17ff4f8a76a0b4421fb475ff0c7a4fc
parentd67114a5f3cbbedd4f01e6ff87fd5d4db9563ead
send-email: fix threaded mails without chain-reply-to

An earlier commit 15da108 ("send-email: 'References:' should only
reference what is sent", 2009-04-13) broke logic to set up threading
information for the next message by rewriting "!" to "not" without
understanding the precedence rules of the language.

Namely,

    ! defined $reply_to || length($reply_to) == 0

was changed to

    not defined $reply_to || length($reply_to) == 0

which is

    not (defined $reply_to || length($reply_to) == 0)

and different from what was intended, which is

    (not defined $reply_to) || (length($reply_to) == 0)

Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-send-email.perl
t/t9001-send-email.sh