Re: uppercase->lowercase and function-key-map

[Richard Stallman]

    So to repeat it: if `ESC O H' is not found in the function-key-map
    and neither in key-translation-map and neither in any active map,
    Emacs will turn it into `ESC O h' and "try again".

This case conversion is a user-level feature--so that when a mode
defines letters as commands, upper case will work like lower case.

So this "second try" really should not include function-key-map or
key-translation-map.  Those maps should be totally case-sensitive.
The sequence ESC O h that results from conversion should be tested
only against the active keymaps, not against function-key-map or
key-translation-map.