When checking for untracked or modified files, take submodules into account

functions/vcs.zsh

@@ -8,7 +8,7 @@
 
 set_default POWERLEVEL9K_VCS_SHOW_SUBMODULE_DIRTY false
 function +vi-git-untracked() {
-    if [[ "$POWERLEVEL9K_VCS_SHOW_SUBMODULE_DIRTY" == "true" && "$(command git submodule foreach 'git ls-files --others --exclude-standard')" != "" ]]; then
+    if [[ "$POWERLEVEL9K_VCS_SHOW_SUBMODULE_DIRTY" == "true" && "$(command git submodule foreach --quiet --recursive '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