include removed function tmm-get-keybind to settings

settings/completion-settings.el

@@ -109,7 +109,18 @@
     ;; ivy-done            completion for file, but opens dird mode for directories
     ;; ivy-alt-done        complete dir or open file, but without entering any character it opens dird mode
     ;; ivy-immediate-done  no completion
-    ))
+    )
+
+  ;; previously defined in tmm.el (removed by commit on Oct 24, 2020)
+  ;; counsel-tmm uses `tmm-get-keybind'
+  (defun tmm-get-keybind (keyseq)
+    "Return the current binding of KEYSEQ, merging prefix definitions.
+If KEYSEQ is a prefix key that has local and global bindings,
+we merge them into a single keymap which shows the proper order of the menu.
+However, for the menu bar itself, the value does not take account
+of `menu-bar-final-items'."
+    (lookup-key (cons 'keymap (nreverse (current-active-maps))) keyseq))
+  )
 
 ;;(setq tab-always-indent 'complete)  ;; use 'complete when auto-complete is disabled