Fix checking for untracked files

Now the untracked files are always checked from
the root folder of the repo.

functions/vcs.zsh

@@ -12,10 +12,24 @@ function +vi-git-untracked() {
     # If we are in a .git folder, do not check for untracked files.
     [[ "${PWD:A}" =~ "\.git/" ]] && return
 
+    # If we are in a repos root folder, vcs_comm[gitdir] yields ".git".
+    # Inside the .git dir itself (and not a subdir of it) the variable
+    # yields ".". In any other case (either a subdirectory of .git or
+    # the repo itself), the value of vcs_comm[gitdir] is the absolute
+    # path to the .git directory.
+    # Therefore we can step up a directory, if we are inside the .git
+    # folder. And in any other case, use the parent directory of the
+    # gitdir.
+    local repoDir="."
+    # Getting the parent dir of the current dir "." is still ".", so
+    # is is safe to do this always.
+    [[ "${vcs_comm[gitdir]}" != ".git" ]] && repoDir="${vcs_comm[gitdir]:A:h}"
+    [[ "${vcs_comm[gitdir]}" == "." ]] && repoDir="${PWD:A:h}"
+
     if [[ "$POWERLEVEL9K_VCS_SHOW_SUBMODULE_DIRTY" == "true" && "$(command git submodule foreach --quiet --recursive 'command git ls-files --others --exclude-standard')" != "" ]]; then
         hook_com[unstaged]+=" $(print_icon 'VCS_UNTRACKED_ICON')"
         VCS_WORKDIR_HALF_DIRTY=true
-    elif [[ "$(command git ls-files --others --exclude-standard)" != "" ]]; then
+    elif [[ "$(command git ls-files --others --exclude-standard "${repoDir}")" != "" ]]; then
         hook_com[unstaged]+=" $(print_icon 'VCS_UNTRACKED_ICON')"
         VCS_WORKDIR_HALF_DIRTY=true
     else