Fixed vim and zsh

zsh/modules/git/functions/git-dir

@@ -0,0 +1,9 @@
+local git_dir="${$(command git rev-parse --git-dir):A}"
+
+if [[ -n "${git_dir}" ]]; then
+  print "${git_dir}"
+  return 0
+else
+  print "${0}: not a repository: ${PWD}" >&2
+  return 1
+fi