C-h m produces conflicting key binding descriptions

[Alan Mackenzie]

Emacs 21.1

In (the upcoming) awk-mode, if I do C-h m, the mode's key bindings
contain these four lines:

<C-M-e>         c-end-of-defun
<C-M-a>         c-beginning-of-defun

ESC C-e         c-awk-end-of-defun
ESC C-a         c-awk-beginning-of-defun

The first two are spurious, and I would not have expected to see them.
They are overshadowed by the last two.

-- 
Alan Mackenzie (Munich, Germany)
Email: aacm@muuc.dee; to decode, wherever there is a repeated letter
(like "aa"), remove half of them (leaving, say, "a").