Run `C-x C-e' on (self-insert-command 1) and (this-command-keys).

Run `C-x C-e' on (self-insert-command 1) and (this-command-keys).

[Hongyi Zhao]

`C-x C-e (this-command-keys)' will give the following in *Messages* buffer:

"  ^X^E "

`C-x C-e (self-insert-command 1)' will give the following in-situ:

(self-insert-command 1)^E

But why doesn't it give the following:

(self-insert-command 1)^X^E

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province

Re: Run `C-x C-e' on (self-insert-command 1) and (this-command-keys).

[Michael Heerdegen]

Hongyi Zhao <hongyi.zhao@gmail.com> writes:

> (self-insert-command 1)^E
>
> But why doesn't it give the following:
>
> (self-insert-command 1)^X^E

This question is a bit like "I drove my car into a lake and it drowned -
why was it designed to do that?".  It is not a silly question, but most
drivers don't try and also don't ask.

Ok.  `self-insert-command' is a command to insert the character a key
corresponds to - "Insert the character you type." (from the docstring).
It operates on the level of single (key) events, not key sequences.

So instead of binding a complete key sequence Z h a o to
`self-insert-command', so that when you have finished typing those keys
Emacs would insert "Zhao", each of the individual letter keys are just
bound to `self-insert-command'.  The command is intended to be bound to
keys.

In that way this command kind of an exception.  For more see the
implementation: it just looks at the last event.

Michael.

Re: Run `C-x C-e' on (self-insert-command 1) and (this-command-keys).

[Emanuel Berg via Users list for the GNU Emacs text editor]

Michael Heerdegen wrote:

> This question is a bit like "I drove my car into a lake and
> it drowned - why was it designed to do that?". It is not
> a silly question, but most drivers don't try and also
> don't ask.

If everyone did it it would be a problem but if one does it it
is an asset ...

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