The new flag is used to amend the tip of the current branch. Prepare
the tree object you would want to replace the latest commit as usual
(this includes the usual -i/-o and explicit paths), and the commit log
editor is seeded with the commit message from the tip of the current
branch. The commit you create replaces the current tip -- if it was a
merge, it will have the parents of the current tip as parents -- so the
current top commit is discarded.
It is a rough equivalent for:
$ git reset --soft HEAD^
$ ... do something else to come up with the right tree ...
$ git commit -c ORIG_HEAD
but can be used to amend a merge commit.
Signed-off-by: Junio C Hamano <junkio@cox.net>
# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2006 Junio C Hamano
# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2006 Junio C Hamano
-USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>] [-e] [--author <author>] [[-i | -o] <path>...]'
+USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>) [--amend] [-e] [--author <author>] [[-i | -o] <path>...]'
SUBDIRECTORY_OK=Yes
. git-sh-setup
SUBDIRECTORY_OK=Yes
. git-sh-setup
# We always show status for the whole tree.
cd "$TOP"
# We always show status for the whole tree.
cd "$TOP"
+ IS_INITIAL="$initial_commit"
+ REFERENCE=HEAD
+ case "$amend" in
+ t)
+ # If we are amending the initial commit, there
+ # is no HEAD^1.
+ if git-rev-parse --verify "HEAD^1" >/dev/null 2>&1
+ then
+ REFERENCE="HEAD^1"
+ IS_INITIAL=
+ else
+ IS_INITIAL=t
+ fi
+ ;;
+ esac
+
# If TMP_INDEX is defined, that means we are doing
# "--only" partial commit, and that index file is used
# to build the tree for the commit. Otherwise, if
# If TMP_INDEX is defined, that means we are doing
# "--only" partial commit, and that index file is used
# to build the tree for the commit. Otherwise, if
*) echo "# On branch $branch" ;;
esac
*) echo "# On branch $branch" ;;
esac
- if test -z "$initial_commit"
+ if test -z "$IS_INITIAL"
then
git-diff-index -M --cached --name-status \
then
git-diff-index -M --cached --name-status \
- --diff-filter=MDTCRA HEAD |
+ --diff-filter=MDTCRA $REFERENCE |
sed -e '
s/\\/\\\\/g
s/ /\\ /g
sed -e '
s/\\/\\\\/g
s/ /\\ /g
if test -n "$verbose"
then
if test -n "$verbose"
then
- git-diff-index --cached -M -p --diff-filter=MDTCRA HEAD
+ git-diff-index --cached -M -p --diff-filter=MDTCRA $REFERENCE
fi
case "$committable" in
0)
fi
case "$committable" in
0)
only=
logfile=
use_commit=
only=
logfile=
use_commit=
no_edit=
log_given=
log_message=
no_edit=
log_given=
log_message=
+ --a|--am|--ame|--amen|--amend)
+ amend=t
+ log_given=t$log_given
+ use_commit=HEAD
+ shift
+ ;;
-c)
case "$#" in 1) usage ;; esac
shift
-c)
case "$#" in 1) usage ;; esac
shift
################################################################
# Sanity check options
################################################################
# Sanity check options
+case "$amend,$initial_commit" in
+t,t)
+ die "You do not have anything to amend." ;;
+t,)
+ if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
+ die "You are in the middle of a merge -- cannot amend."
+ fi ;;
+esac
+
case "$log_given" in
tt*)
die "Only one of -c/-C/-F/-m can be used." ;;
case "$log_given" in
tt*)
die "Only one of -c/-C/-F/-m can be used." ;;
then
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
then
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
+ elif test -n "$amend"; then
+ PARENTS=$(git-cat-file commit HEAD |
+ sed -n -e '/^$/q' -e 's/^parent /-p /p')
fi
else
if [ -z "$(git-ls-files)" ]; then
fi
else
if [ -z "$(git-ls-files)" ]; then