Re: Lisp manual is incomplete w.r.t. mode-line-format

[Luc Teirlinck]

Richard Stallman wrote:

       But the manual does not say anything about an unbound symbol in a
       (SYMBOL THEN [ELSE]) construct.  Experiment shows that when SYMBOL is
       void the ELSE element is used, rather than ignoring the entire
       construct.  Is that the correct behavior?  It should be documented.

   Could someone verify that this is still true in the current sources?
   Then I will document it.

It appears to still be true.  But it is not just the Elisp manual that
fails to mention this and should be fixed.  The `mode-line-format'
docstring does not mention it either.  Is it intentional behavior?

Sincerely,

Luc.