Replace xmalloc/memset(0) pairs with xcalloc

diff --git a/git-stash.sh b/git-stash.sh
index 4938ade589f2f7d1c69bd53f7bc7bc1bd33f488c..42f626f9d555f26f3e50441c0ab27de5cac19bf4 100755 (executable)
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -1,7 +1,13 @@
 #!/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 | drop | pop ) [<stash>]
+   or: $dashless apply [--index] [<stash>]
+   or: $dashless branch <branchname> [<stash>]
+   or: $dashless [save [--keep-index] [<message>]]
+   or: $dashless clear"
 
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
@@ -33,6 +39,7 @@ clear_stash () {
 create_stash () {
        stash_msg="$1"
 
+       git update-index -q --refresh
        if no_changes
        then
                exit 0
@@ -86,8 +93,16 @@ create_stash () {
 }
 
 save_stash () {
-       stash_msg="$1"
+       keep_index=
+       case "$1" in
+       --keep-index)
+               keep_index=t
+               shift
+       esac
+
+       stash_msg="$*"
 
+       git update-index -q --refresh
        if no_changes
        then
                echo 'No local changes to save'
@@ -104,6 +119,13 @@ 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"
+
+       git reset --hard
+
+       if test -n "$keep_index" && test -n $i_tree
+       then
+               git read-tree --reset -u $i_tree
+       fi
 }
 
 have_stash () {
@@ -122,7 +144,14 @@ show_stash () {
        then
                flags=--stat
        fi
-       s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@")
+
+       if test $# = 0
+       then
+               set x "$ref_stash@{0}"
+               shift
+       fi
+
+       s=$(git rev-parse --revs-only --no-flags "$@")
 
        w_commit=$(git rev-parse --verify "$s") &&
        b_commit=$(git rev-parse --verify "$s^") &&
@@ -130,8 +159,9 @@ show_stash () {
 }
 
 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
@@ -140,20 +170,27 @@ apply_stash () {
                shift
        esac
 
+       if test $# = 0
+       then
+               set x "$ref_stash@{0}"
+               shift
+       fi
+
        # current index state
        c_tree=$(git write-tree) ||
                die 'Cannot apply a stash in the middle of a merge'
 
        # 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=$(git rev-parse --revs-only --no-flags "$@") &&
        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 $? -ne 0 &&
@@ -218,6 +255,23 @@ drop_stash () {
        git rev-parse --verify "$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 "$1" in
 list)
@@ -235,7 +289,7 @@ show)
        ;;
 save)
        shift
-       save_stash "$*" && git-reset --hard
+       save_stash "$@"
        ;;
 apply)
        shift
@@ -264,12 +318,15 @@ pop)
                drop_stash "$@"
        fi
        ;;
+branch)
+       shift
+       apply_to_branch "$@"
+       ;;
 *)
        if test $# -eq 0
        then
                save_stash &&
-               echo '(To restore them type "git stash apply")' &&
-               git-reset --hard
+               echo '(To restore them type "git stash apply")'
        else
                usage
        fi