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RE: was a command called via M-x?

From: Drew Adams
Subject: RE: was a command called via M-x?
Date: Thu, 17 Jul 2014 06:57:28 -0700 (PDT)

> (let* ((command-name (symbol-name this-command))
>        (pref-arg current-prefix-arg)
>        (keys (this-command-keys))
>        (key-string (key-description keys))
>        (title-string (if pref-arg
>                          (format "%s %s" pref-arg key-string)
>                        (format "%s" key-string))))
>   (alert command-name :title title-string))
> I don't want to just check for "RET" and replace it with "M-x", because
> the command might very well have been called with "RET". Do I have any
> other way of knowing for sure that the command was called using
> `execute-extended-command'? last-command doesn't seem to get it
> either...

You might want to show more of how your code is invoked etc.

`execute-extended-command' changes `this-command'.  The command invoked
by `execute-extended-command' is instead the value of `real-this-command',
and you can get its key binding (if there is one) using:
(where-is-internal real-this-command overriding-local-map t) instead of

But if you want `execute-extended-command' or `M-x' instead of that
information, then you will probably need to either advise that function
or (depending on when you need the info) advise `read-extended-command',
recording for yourself the fact that `execute-extended-command' was

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