git-commit: only append a newline to -m mesg if necessary
Currently, git will append two newlines to every message supplied via the -m switch. The purpose of this is to allow -m to be supplied multiple times and have each supplied string become a paragraph in the resulting commit message. Normally, this does not cause a problem since any trailing newlines will be removed by the cleanup operation. If cleanup=verbatim for example, then the trailing newlines will not be removed and will survive into the resulting commit message. Instead, let's ensure that the string supplied to -m is newline terminated, but only append a second newline when appending additional messages. Fixes the test in t7502. Signed-off-by: NBrandon Casey <drafnel@gmail.com> Reviewed-by: NJonathan Nieder <jrnieder@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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