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gitweb: update Git homepage URL
[git.git] / git-stash.sh
index 4938ade589f2f7d1c69bd53f7bc7bc1bd33f488c..531c7c31aca87db77e54c46ffb89899652a79fcd 100755 (executable)
@@ -1,7 +1,14 @@
 #!/bin/sh
 # Copyright (c) 2007, Nanako Shiraishi
 
-USAGE='[  | save | list | show | apply | clear | drop | pop | create ]'
+dashless=$(basename "$0" | sed -e 's/-/ /')
+USAGE="list [<options>]
+   or: $dashless show [<stash>]
+   or: $dashless drop [-q|--quiet] [<stash>]
+   or: $dashless ( pop | apply ) [--index] [-q|--quiet] [<stash>]
+   or: $dashless branch <branchname> [<stash>]
+   or: $dashless [save [--keep-index] [-q|--quiet] [<message>]]
+   or: $dashless clear"
 
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
@@ -33,6 +40,7 @@ clear_stash () {
 create_stash () {
        stash_msg="$1"
 
+       git update-index -q --refresh
        if no_changes
        then
                exit 0
@@ -86,11 +94,29 @@ create_stash () {
 }
 
 save_stash () {
-       stash_msg="$1"
+       keep_index=
+       while test $# != 0
+       do
+               case "$1" in
+               --keep-index)
+                       keep_index=t
+                       ;;
+               -q|--quiet)
+                       GIT_QUIET=t
+                       ;;
+               *)
+                       break
+                       ;;
+               esac
+               shift
+       done
+
+       stash_msg="$*"
 
+       git update-index -q --refresh
        if no_changes
        then
-               echo 'No local changes to save'
+               say 'No local changes to save'
                exit 0
        fi
        test -f "$GIT_DIR/logs/$ref_stash" ||
@@ -103,7 +129,14 @@ save_stash () {
 
        git update-ref -m "$stash_msg" $ref_stash $w_commit ||
                die "Cannot save the current status"
-       printf 'Saved working directory and index state "%s"\n' "$stash_msg"
+       say Saved working directory and index state "$stash_msg"
+
+       git reset --hard ${GIT_QUIET:+-q}
+
+       if test -n "$keep_index" && test -n $i_tree
+       then
+               git read-tree --reset -u $i_tree
+       fi
 }
 
 have_stash () {
@@ -122,23 +155,34 @@ show_stash () {
        then
                flags=--stat
        fi
-       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^") &&
+       w_commit=$(git rev-parse --verify --default $ref_stash "$@") &&
+       b_commit=$(git rev-parse --verify "$w_commit^") &&
        git diff $flags $b_commit $w_commit
 }
 
 apply_stash () {
+       git update-index -q --refresh &&
        git diff-files --quiet --ignore-submodules ||
-               die 'Cannot restore on top of a dirty state'
+               die 'Cannot apply to a dirty working tree, please stage your changes'
 
        unstash_index=
-       case "$1" in
-       --index)
-               unstash_index=t
+
+       while test $# != 0
+       do
+               case "$1" in
+               --index)
+                       unstash_index=t
+                       ;;
+               -q|--quiet)
+                       GIT_QUIET=t
+                       ;;
+               *)
+                       break
+                       ;;
+               esac
                shift
-       esac
+       done
 
        # current index state
        c_tree=$(git write-tree) ||
@@ -146,14 +190,15 @@ apply_stash () {
 
        # 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 $ref_stash "$@") &&
+       s=$(git rev-parse --verify --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" != "$i_tree"
+       if test -n "$unstash_index" && test "$b_tree" != "$i_tree" &&
+                       test "$c_tree" != "$i_tree"
        then
                git diff-tree --binary $s^2^..$s^2 | git apply --cached
                test $? -ne 0 &&
@@ -170,6 +215,10 @@ apply_stash () {
                export GITHEAD_$w_tree GITHEAD_$c_tree GITHEAD_$b_tree
        "
 
+       if test -n "$GIT_QUIET"
+       then
+               export GIT_MERGE_VERBOSITY=0
+       fi
        if git-merge-recursive $b_tree -- $c_tree $w_tree
        then
                # No conflict
@@ -184,7 +233,12 @@ apply_stash () {
                                die "Cannot unstage modified files"
                        rm -f "$a"
                fi
-               git status || :
+               squelch=
+               if test -n "$GIT_QUIET"
+               then
+                       squelch='>/dev/null 2>&1'
+               fi
+               eval "git status $squelch" || :
        else
                # Merge conflict; keep the exit status from merge-recursive
                status=$?
@@ -199,25 +253,55 @@ apply_stash () {
 drop_stash () {
        have_stash || die 'No stash entries to drop'
 
+       while test $# != 0
+       do
+               case "$1" in
+               -q|--quiet)
+                       GIT_QUIET=t
+                       ;;
+               *)
+                       break
+                       ;;
+               esac
+               shift
+       done
+
        if test $# = 0
        then
                set x "$ref_stash@{0}"
                shift
        fi
        # Verify supplied argument looks like a stash entry
-       s=$(git rev-parse --revs-only --no-flags "$@") &&
+       s=$(git rev-parse --verify "$@") &&
        git rev-parse --verify "$s:"   > /dev/null 2>&1 &&
        git rev-parse --verify "$s^1:" > /dev/null 2>&1 &&
        git rev-parse --verify "$s^2:" > /dev/null 2>&1 ||
                die "$*: not a valid stashed state"
 
        git reflog delete --updateref --rewrite "$@" &&
-               echo "Dropped $* ($s)" || die "$*: Could not drop stash entry"
+               say "Dropped $* ($s)" || die "$*: Could not drop stash entry"
 
        # clear_stash if we just dropped the last stash entry
        git rev-parse --verify "$ref_stash@{0}" > /dev/null 2>&1 || clear_stash
 }
 
+apply_to_branch () {
+       have_stash || die 'Nothing to apply'
+
+       test -n "$1" || die 'No branch name specified'
+       branch=$1
+
+       if test -z "$2"
+       then
+               set x "$ref_stash@{0}"
+       fi
+       stash=$2
+
+       git-checkout -b $branch $stash^ &&
+       apply_stash --index $stash &&
+       drop_stash $stash
+}
+
 # Main command set
 case "$1" in
 list)
@@ -235,7 +319,7 @@ show)
        ;;
 save)
        shift
-       save_stash "$*" && git-reset --hard
+       save_stash "$@"
        ;;
 apply)
        shift
@@ -264,12 +348,15 @@ pop)
                drop_stash "$@"
        fi
        ;;
+branch)
+       shift
+       apply_to_branch "$@"
+       ;;
 *)
        if test $# -eq 0
        then
                save_stash &&
-               echo '(To restore them type "git stash apply")' &&
-               git-reset --hard
+               say '(To restore them type "git stash apply")'
        else
                usage
        fi