After debugging, the answer to my puzzle appears to be that:
#'lookup-key (and friends) converts ?\ to 'space before looking it
up; while #'define-key doesn't convert ?\ to 'space when defining
This appears to contradict the docstring that says that a keystroke
representing an ascii value in the range 32-255 can be represented by
its corresponding character.
In the actual event loop, is it ?\ or 'space that gets looked up?
XEmacs-Beta mailing list