git/t/t4152-am-subjects.sh
Jeff King 9553d2b263 format-patch: preserve subject newlines with -k
In older versions of git, we used rfc822 header folding to
indicate that the original subject line had multiple lines
in it.  But since a1f6baa (format-patch: wrap long header
lines, 2011-02-23), we now use header folding whenever there
is a long line.

This means that "git am" cannot trust header folding as a
sign from format-patch that newlines should be preserved.
Instead, format-patch needs to signal more explicitly that
the newlines are significant.  This patch does so by
rfc2047-encoding the newlines in the subject line. No
changes are needed on the "git am" end; it already decodes
the newlines properly.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-26 15:56:55 -07:00

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#!/bin/sh
test_description='test subject preservation with format-patch | am'
. ./test-lib.sh
make_patches() {
type=$1
subject=$2
test_expect_success "create patches with $type subject" '
git reset --hard baseline &&
echo $type >file &&
git commit -a -m "$subject" &&
git format-patch -1 --stdout >$type.patch &&
git format-patch -1 --stdout -k >$type-k.patch
'
}
check_subject() {
git reset --hard baseline &&
git am $2 $1.patch &&
git log -1 --pretty=format:%B >actual &&
test_cmp expect actual
}
test_expect_success 'setup baseline commit' '
test_commit baseline file
'
SHORT_SUBJECT='short subject'
make_patches short "$SHORT_SUBJECT"
LONG_SUBJECT1='this is a long subject that is virtually guaranteed'
LONG_SUBJECT2='to require wrapping via format-patch if it is all'
LONG_SUBJECT3='going to appear on a single line'
LONG_SUBJECT="$LONG_SUBJECT1 $LONG_SUBJECT2 $LONG_SUBJECT3"
make_patches long "$LONG_SUBJECT"
MULTILINE_SUBJECT="$LONG_SUBJECT1
$LONG_SUBJECT2
$LONG_SUBJECT3"
make_patches multiline "$MULTILINE_SUBJECT"
echo "$SHORT_SUBJECT" >expect
test_expect_success 'short subject preserved (format-patch | am)' '
check_subject short
'
test_expect_success 'short subject preserved (format-patch -k | am)' '
check_subject short-k
'
test_expect_success 'short subject preserved (format-patch -k | am -k)' '
check_subject short-k -k
'
echo "$LONG_SUBJECT" >expect
test_expect_success 'long subject preserved (format-patch | am)' '
check_subject long
'
test_expect_success 'long subject preserved (format-patch -k | am)' '
check_subject long-k
'
test_expect_success 'long subject preserved (format-patch -k | am -k)' '
check_subject long-k -k
'
echo "$LONG_SUBJECT" >expect
test_expect_success 'multiline subject unwrapped (format-patch | am)' '
check_subject multiline
'
test_expect_success 'multiline subject unwrapped (format-patch -k | am)' '
check_subject multiline-k
'
echo "$MULTILINE_SUBJECT" >expect
test_expect_success 'multiline subject preserved (format-patch -k | am -k)' '
check_subject multiline-k -k
'
test_done