Complete 'help' if the entry directory is empty or does not exist

Former-commit-id: 1167f06b14ce50baa0c96e67a835247c6579aaa9
Former-commit-id: ea6be360d50c16579253d1e2d0b1825c5a1f1a4a

extra/completion.bash

@@ -9,6 +9,7 @@ _path_gen() {
     for path in "${full_paths[@]}"; do
       trimmed_paths+=("${path:${#sshyp_path}:-4}")
     done
+    if [ "${trimmed_paths[0]}" == '/**/*' ]; then trimmed_paths[0]=help; fi
 } &&
 
 _sshyp_completions() {