fast-import: prevent producing bad delta

diff --git a/git-stash.sh b/git-stash.sh
index 7561b374d2ec90fe774e98e39a121a1a3a3cdfa9..0a9403653d7dbbb6927973dcfcc41bfd9a904e05 100755 (executable)
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -12,12 +12,14 @@ USAGE="list [<options>]
 
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
+START_DIR=`pwd`
 . git-sh-setup
 require_work_tree
 cd_to_toplevel
 
 TMP="$GIT_DIR/.git-stash.$$"
-trap 'rm -f "$TMP-*"' 0
+TMPindex=${GIT_INDEX_FILE-"$GIT_DIR/index"}.stash.$$
+trap 'rm -f "$TMP-"* "$TMPindex"' 0
 
 ref_stash=refs/stash
 
@@ -81,14 +83,12 @@ create_stash () {
 
                # 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" &&
+                       git read-tree --index-output="$TMPindex" -m $i_tree &&
+                       GIT_INDEX_FILE="$TMPindex" &&
                        export GIT_INDEX_FILE &&
-                       git read-tree -m $i_tree &&
                        git diff --name-only -z HEAD | git update-index -z --add --remove --stdin &&
                        git write-tree &&
-                       rm -f "$TMP-index"
+                       rm -f "$TMPindex"
                ) ) ||
                        die "Cannot save the current worktree state"
 
@@ -136,11 +136,12 @@ save_stash () {
                        keep_index=t
                        ;;
                --no-keep-index)
-                       keep_index=
+                       keep_index=n
                        ;;
                -p|--patch)
                        patch_mode=t
-                       keep_index=t
+                       # only default to keep if we don't already have an override
+                       test -z "$keep_index" && keep_index=t
                        ;;
                -q|--quiet)
                        GIT_QUIET=t
@@ -185,7 +186,7 @@ save_stash () {
        then
                git reset --hard ${GIT_QUIET:+-q}
 
-               if test -n "$keep_index" && test -n $i_tree
+               if test "$keep_index" = "t" && test -n $i_tree
                then
                        git read-tree --reset -u $i_tree
                fi
@@ -193,7 +194,7 @@ save_stash () {
                git apply -R < "$TMP-patch" ||
                die "Cannot remove worktree changes"
 
-               if test -z "$keep_index"
+               if test "$keep_index" != "t"
                then
                        git reset
                fi
@@ -264,7 +265,7 @@ parse_flags_and_rev()
        b_tree=
        i_tree=
 
-       REV=$(git rev-parse --no-flags --symbolic "$@" 2>/dev/null)
+       REV=$(git rev-parse --no-flags --symbolic "$@") || exit 1
 
        FLAGS=
        for opt
@@ -310,16 +311,6 @@ parse_flags_and_rev()
        IS_STASH_LIKE=t &&
        test "$ref_stash" = "$(git rev-parse --symbolic-full-name "${REV%@*}")" &&
        IS_STASH_REF=t
-
-       if test "${REV}" != "${REV%{*\}}"
-       then
-               # maintainers: it would be better if git rev-parse indicated
-               # this condition with a non-zero status code but as of 1.7.2.1 it
-               # it did not. So, we use non-empty stderr output as a proxy for the
-               # condition of interest.
-               test -z "$(git rev-parse "$REV" 2>&1 >/dev/null)" || die "$REV does not exist in the stash log"
-       fi
-
 }
 
 is_stash_like()
@@ -344,9 +335,7 @@ apply_stash () {
 
        assert_stash_like "$@"
 
-       git update-index -q --refresh &&
-       git diff-files --quiet --ignore-submodules ||
-               die 'Cannot apply to a dirty working tree, please stage your changes'
+       git update-index -q --refresh || die 'unable to refresh index'
 
        # current index state
        c_tree=$(git write-tree) ||
@@ -394,7 +383,7 @@ apply_stash () {
                then
                        squelch='>/dev/null 2>&1'
                fi
-               eval "git status $squelch" || :
+               (cd "$START_DIR" && eval "git status $squelch") || :
        else
                # Merge conflict; keep the exit status from merge-recursive
                status=$?