USAGE='[ | list | show | apply | clear]'
+SUBDIRECTORY_OK=Yes
. git-sh-setup
require_work_tree
+cd_to_toplevel
TMP="$GIT_DIR/.git-stash.$$"
trap 'rm -f "$TMP-*"' 0
ref_stash=refs/stash
no_changes () {
- git-diff-index --quiet --cached HEAD &&
- git-diff-files --quiet
+ git diff-index --quiet --cached HEAD &&
+ git diff-files --quiet
}
clear_stash () {
- logfile="$GIT_DIR/logs/$ref_stash" &&
- mkdir -p "$(dirname "$logfile")" &&
- : >"$logfile"
+ if current=$(git rev-parse --verify $ref_stash 2>/dev/null)
+ then
+ git update-ref -d refs/stash $current
+ fi
}
save_stash () {
+ stash_msg="$1"
+
if no_changes
then
echo >&2 'No local changes to save'
test -f "$GIT_DIR/logs/$ref_stash" ||
clear_stash || die "Cannot initialize stash"
+ # Make sure the reflog for stash is kept.
+ : >>"$GIT_DIR/logs/$ref_stash"
+
# state of the base commit
- if b_commit=$(git-rev-parse --verify HEAD)
+ if b_commit=$(git rev-parse --verify HEAD)
then
- head=$(git-log --abbrev-commit --pretty=oneline -n 1 HEAD)
+ head=$(git log --abbrev-commit --pretty=oneline -n 1 HEAD)
else
die "You do not have the initial commit yet"
fi
- if branch=$(git-symbolic-ref -q HEAD)
+ if branch=$(git symbolic-ref -q HEAD)
then
branch=${branch#refs/heads/}
else
msg=$(printf '%s: %s' "$branch" "$head")
# state of the index
- i_tree=$(git-write-tree) &&
+ i_tree=$(git write-tree) &&
i_commit=$(printf 'index on %s' "$msg" |
- git-commit-tree $i_tree -p $b_commit) ||
+ git commit-tree $i_tree -p $b_commit) ||
die "Cannot save the current index state"
# state of the working tree
w_tree=$( (
+ rm -f "$TMP-index" &&
+ cp -p ${GIT_INDEX_FILE-"$GIT_DIR/index"} "$TMP-index" &&
GIT_INDEX_FILE="$TMP-index" &&
export GIT_INDEX_FILE &&
-
- rm -f "$TMP-index" &&
- git-read-tree $i_tree &&
- git-add -u &&
- git-write-tree &&
+ git read-tree -m $i_tree &&
+ git add -u &&
+ git write-tree &&
rm -f "$TMP-index"
) ) ||
die "Cannot save the current worktree state"
# create the stash
- w_commit=$(printf 'WIP on %s' "$msg" |
- git-commit-tree $w_tree -p $b_commit -p $i_commit) ||
+ if test -z "$stash_msg"
+ then
+ stash_msg=$(printf 'WIP on %s' "$msg")
+ else
+ stash_msg=$(printf 'On %s: %s' "$branch" "$stash_msg")
+ fi
+ w_commit=$(printf '%s\n' "$stash_msg" |
+ git commit-tree $w_tree -p $b_commit -p $i_commit) ||
die "Cannot record working tree state"
- git-update-ref -m "$msg" $ref_stash $w_commit ||
+ git update-ref -m "$stash_msg" $ref_stash $w_commit ||
die "Cannot save the current status"
- printf >&2 'Saved WIP on %s\n' "$msg"
+ printf >&2 'Saved "%s"\n' "$stash_msg"
+}
+
+have_stash () {
+ git rev-parse --verify $ref_stash >/dev/null 2>&1
}
list_stash () {
- git-log --pretty=oneline -g "$@" $ref_stash |
+ have_stash || return 0
+ git log --pretty=oneline -g "$@" $ref_stash |
sed -n -e 's/^[.0-9a-f]* refs\///p'
}
show_stash () {
- flags=$(git-rev-parse --no-revs --flags "$@")
+ flags=$(git rev-parse --no-revs --flags "$@")
if test -z "$flags"
then
flags=--stat
fi
- s=$(git-rev-parse --revs-only --no-flags --default $ref_stash "$@")
+ s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@")
- w_commit=$(git-rev-parse --verify "$s") &&
- b_commit=$(git-rev-parse --verify "$s^") &&
- git-diff $flags $b_commit $w_commit
+ w_commit=$(git rev-parse --verify "$s") &&
+ b_commit=$(git rev-parse --verify "$s^") &&
+ git diff $flags $b_commit $w_commit
}
apply_stash () {
- git-diff-files --quiet ||
+ git diff-files --quiet ||
die 'Cannot restore on top of a dirty state'
+ unstash_index=
+ case "$1" in
+ --index)
+ unstash_index=t
+ shift
+ esac
+
# current index state
- c_tree=$(git-write-tree) ||
+ c_tree=$(git write-tree) ||
die 'Cannot apply a stash in the middle of a merge'
- s=$(git-rev-parse --revs-only --no-flags --default $ref_stash "$@") &&
- w_tree=$(git-rev-parse --verify "$s:") &&
- b_tree=$(git-rev-parse --verify "$s^:") ||
+ # stash records the work tree, and is a merge between the
+ # base commit (first parent) and the index tree (second parent).
+ s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@") &&
+ w_tree=$(git rev-parse --verify "$s:") &&
+ b_tree=$(git rev-parse --verify "$s^1:") &&
+ i_tree=$(git rev-parse --verify "$s^2:") ||
die "$*: no valid stashed state found"
+ unstashed_index_tree=
+ if test -n "$unstash_index" && test "$b_tree" != "$i_tree"
+ then
+ git diff --binary $s^2^..$s^2 | git apply --cached
+ test $? -ne 0 &&
+ die 'Conflicts in index. Try without --index.'
+ unstashed_index_tree=$(git-write-tree) ||
+ die 'Could not save index tree'
+ git reset
+ fi
+
eval "
GITHEAD_$w_tree='Stashed changes' &&
GITHEAD_$c_tree='Updated upstream' &&
if git-merge-recursive $b_tree -- $c_tree $w_tree
then
# No conflict
- a="$TMP-added" &&
- git-diff --cached --name-only --diff-filter=A $c_tree >"$a" &&
- git-read-tree --reset $c_tree &&
- git-update-index --add --stdin <"$a" ||
- die "Cannot unstage modified files"
- git-status
- rm -f "$a"
+ if test -n "$unstashed_index_tree"
+ then
+ git read-tree "$unstashed_index_tree"
+ else
+ a="$TMP-added" &&
+ git diff --cached --name-only --diff-filter=A $c_tree >"$a" &&
+ git read-tree --reset $c_tree &&
+ git update-index --add --stdin <"$a" ||
+ die "Cannot unstage modified files"
+ rm -f "$a"
+ fi
+ git status || :
else
# Merge conflict; keep the exit status from merge-recursive
- exit
+ status=$?
+ if test -n "$unstash_index"
+ then
+ echo >&2 'Index was not unstashed.'
+ fi
+ exit $status
fi
}
# Main command set
case "$1" in
-list | '')
+list)
shift
if test $# = 0
then
clear)
clear_stash
;;
-save)
- save_stash && git-reset --hard
+help | usage)
+ usage
;;
*)
- usage
+ if test $# -gt 0 && test "$1" = save
+ then
+ shift
+ fi
+ save_stash "$*" && git-reset --hard
+ ;;
esac