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git-am: cope better with an empty Subject: line

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When the Subject: line is empty for whatever reason, git-am was fooled by
it and left an empty line at the beginning of the resulting commit log
message.

This moves the logic around so that we do not keep $SUBJECT in a separate
variable.  Instead, $dotest/msg-clean, which used to be the log message
body extracted from the message and then trailing whitespaces cleansed
out, now contains the subject line followed by a blank line at the
beginning for normal messages, and we use the first line from the file as
the summary line throughout the program.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Linus Torvalds 2008-04-15 12:56:50 -07:00 committed by Junio C Hamano
parent 6a28518ae0
commit 2e6e3e829f
1 changed files with 10 additions and 14 deletions
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24
git-am.sh
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@ -107,7 +107,7 @@ It does not apply to blobs recorded in its index."
# patch did not touch, so recursive ends up canceling them,
# saying that we reverted all those changes.
eval GITHEAD_$his_tree='"$SUBJECT"'
eval GITHEAD_$his_tree='"$FIRSTLINE"'
export GITHEAD_$his_tree
git-merge-recursive $orig_tree -- HEAD $his_tree || {
git rerere
@ -117,10 +117,6 @@ It does not apply to blobs recorded in its index."
unset GITHEAD_$his_tree
}
reread_subject () {
git stripspace <"$1" | sed -e 1q
}
prec=4
dotest=.dotest sign= utf8=t keep= skip= interactive= resolved= binary=
resolvemsg= resume=
@ -303,7 +299,11 @@ do
echo "Patch is empty. Was it split wrong?"
stop_here $this
}
git stripspace < "$dotest/msg" > "$dotest/msg-clean"
SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
case "$keep_subject" in -k) SUBJECT="[PATCH] $SUBJECT" ;; esac
(echo "$SUBJECT" ; echo ; cat "$dotest/msg") |
git stripspace > "$dotest/msg-clean"
;;
esac
@ -319,9 +319,6 @@ do
export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
case "$keep_subject" in -k) SUBJECT="[PATCH] $SUBJECT" ;; esac
case "$resume" in
'')
if test '' != "$SIGNOFF"
@ -340,10 +337,8 @@ do
ADD_SIGNOFF=
fi
{
printf '%s\n' "$SUBJECT"
if test -s "$dotest/msg-clean"
then
echo
cat "$dotest/msg-clean"
fi
if test '' != "$ADD_SIGNOFF"
@ -360,6 +355,7 @@ do
;;
esac
esac
FIRSTLINE=$(head -1 "$dotest/final-commit")
resume=
if test "$interactive" = t
@ -380,7 +376,7 @@ do
[aA]*) action=yes interactive= ;;
[nN]*) action=skip ;;
[eE]*) git_editor "$dotest/final-commit"
SUBJECT=$(reread_subject "$dotest/final-commit")
FIRSTLINE=$(head -1 "$dotest/final-commit")
action=again ;;
[vV]*) action=again
LESS=-S ${PAGER:-less} "$dotest/patch" ;;
@ -403,7 +399,7 @@ do
stop_here $this
fi
printf 'Applying %s\n' "$SUBJECT"
printf 'Applying %s\n' "$FIRSTLINE"
case "$resolved" in
'')
@ -461,7 +457,7 @@ do
tree=$(git write-tree) &&
parent=$(git rev-parse --verify HEAD) &&
commit=$(git commit-tree $tree -p $parent <"$dotest/final-commit") &&
git update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
stop_here $this
if test -x "$GIT_DIR"/hooks/post-applypatch