Merge branch 'ei/worktree+filter'

* ei/worktree+filter:
  filter-branch: always export GIT_DIR if it is set
  setup_git_directory: fix segfault if repository is found in cwd
  test GIT_WORK_TREE
  extend rev-parse test for --is-inside-work-tree
  Use new semantics of is_bare/inside_git_dir/inside_work_tree
  introduce GIT_WORK_TREE to specify the work tree
  test git rev-parse
  rev-parse: introduce --is-bare-repository
  rev-parse: document --is-inside-git-dir

1 files changed, 2 insertions, 6 deletions

diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index f24c7f2d23..0de49e8459 100755
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -29,11 +29,7 @@ set_reflog_action() {
 }
 
 is_bare_repository () {
-	git-config --bool --get core.bare ||
-	case "$GIT_DIR" in
-	.git | */.git) echo false ;;
-	*) echo true ;;
-	esac
+	git-rev-parse --is-bare-repository
 }
 
 cd_to_toplevel () {
@@ -48,7 +44,7 @@ cd_to_toplevel () {
 }
 
 require_work_tree () {
-	test $(is_bare_repository) = false &&
+	test $(git-rev-parse --is-inside-work-tree) = true &&
 	test $(git-rev-parse --is-inside-git-dir) = false ||
 	die "fatal: $0 cannot be used without a working tree."
 }