Re: Ctrl-[ ?

[Stefan Monnier]

> I found on Stackoverflow that C-[ was pretty much hard-coded as
> ESC. Why is that ?

Under most terminals, `escape` and `C-[` send the same byte sequence,
i.e. a single byte 27 which corresponds to the ascii ESC character.

For this reason, when the GUI version of Emacs was introduced (where the
two keys are clearly distinguished), Emacs added `function-key-map`
entries to turn `escape` into ESC when there's no specific `escape`
binding (the mapping from `C-[` to ESC is done at a much lower level,
this one definitely counts as hardcoded).


        Stefan