difftool: Fix failure on Cygwin

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 195b5ef48ed3371b2010f9caf711e12089da9c06..962a93b586571eb6fc60aae53c77f6e6b9fb281f 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -139,6 +139,7 @@ do
                continue
                ;;
        --remap-to-ancestor)
+               # deprecated ($remap_to_ancestor is set now automatically)
                shift
                remap_to_ancestor=t
                continue
@@ -207,7 +208,7 @@ t,)
 ,*)
        ;;
 *)
-       die "Cannot set --prune-empty and --filter-commit at the same time"
+       die "Cannot set --prune-empty and --commit-filter at the same time"
 esac
 
 case "$force" in
@@ -265,7 +266,14 @@ mkdir ../map || die "Could not create map/ directory"
 
 # we need "--" only if there are no path arguments in $@
 nonrevs=$(git rev-parse --no-revs "$@") || exit
-test -z "$nonrevs" && dashdash=-- || dashdash=
+if test -z "$nonrevs"
+then
+       dashdash=--
+else
+       dashdash=
+       remap_to_ancestor=t
+fi
+
 rev_args=$(git rev-parse --revs-only "$@")
 
 case "$filter_subdir" in
@@ -331,7 +339,7 @@ while read commit parents; do
                        die "tree filter failed: $filter_tree"
 
                (
-                       git diff-index -r --name-only $commit &&
+                       git diff-index -r --name-only --ignore-submodules $commit &&
                        git ls-files --others
                ) > "$tempdir"/tree-state || exit
                git update-index --add --replace --remove --stdin \
@@ -462,11 +470,11 @@ if [ "$filter_tag_name" ]; then
                                                "$new_sha1" "$new_ref"
                                git cat-file tag "$ref" |
                                sed -n \
-                                   -e "1,/^$/{
+                                   -e '1,/^$/{
                                          /^object /d
                                          /^type /d
                                          /^tag /d
-                                       }" \
+                                       }' \
                                    -e '/^-----BEGIN PGP SIGNATURE-----/q' \
                                    -e 'p' ) |
                                git mktag) ||