Eduardo Costa reported the error when indenting a form like
(defvar test
  '( asdf ; note space after left paren
;ltk error on this line

Basic idea is to make the tokenizer skip leading whitespace.
Probably only slightly more robust than the previous code.

These were incorrectly disabled; they appear to be compatible with TTk.

Menus help new users find functionality.
The current menus should cover every *key-<action>*.
Should rework these so the key bindings are shown.

Phil sent these by email since his website went belly-up.