if test -z "$path"
      set path .

   set -l error 0
   set -l repo_git
   set -l repo_pijul
   set -l repo_darcs
   if test -n "$path"
      set repo_git -C "$path"
      set repo_pijul --repository="$path"
      set repo_darcs --repodir="$path"

   set -l error 0

   if git -C "$path" rev-parse --git-dir &>/dev/null
      git -C "$path" pull
      and git -C "$path" add -u

   if git $repo_git rev-parse --git-dir &>/dev/null
      git $repo_git pull
      and git $repo_git add -u

         if not git -C "$path" diff --cached --quiet
            git -C "$path" commit -m "vs"

         if not git $repo_git diff --cached --quiet
            git $repo_git commit -m "vs"

      and git -C "$path" push

      and git $repo_git push

   if pijul list --repository="$path" &>/dev/null
      pijul pull -a --repository="$path"
      and pijul record -a -m "vs" --repository="$path"
      and pijul push -a --repository="$path"

   if pijul list $repo_pijul &>/dev/null
      pijul pull -a $repo_pijul
      and pijul record -a -m "vs" $repo_pijul
      and pijul push -a $repo_pijul

   if darcs show repo --repodir="$path" &>/dev/null
      darcs pull -av --repodir="$path"

   if darcs show repo $repo_darcs &>/dev/null
      darcs pull -av $repo_darcs

         if darcs whatsnew --repodir="$path" &>/dev/null
            darcs record -av -m "vs" --repodir="$path"

         if darcs whatsnew $repo_darcs &>/dev/null
            darcs record -av -m "vs" $repo_darcs

      and darcs push -av --repodir="$path"

      and darcs push -av $repo_darcs