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Re: How do I get the definition of a function ?
From: |
Harald Hanche-Olsen |
Subject: |
Re: How do I get the definition of a function ? |
Date: |
Sat, 20 Oct 2007 23:42:06 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/23.0.0 (berkeley-unix) |
+ gnuist006@gmail.com:
> How do I get the definition, ie source code of a function in emacs
> lisp ?
The easiest way is to type C-h f and give the name of the function, or
C-h k followed by the keystrokes that invoke the function, if it is an
interactive command.
You get a window saying something like this:
C-c C-c runs the command message-send-and-exit
which is an interactive compiled Lisp function in `message'.
where the word "message" (the filename where the function was defined)
is a clickable link. Click on it.
> But if it shows some binary or opcode string.
It won't. Oh, you mean if you evaluate a form like this one:
(symbol-function 'message-send-and-exit)
Since the function was byte-compiled, you do get an array including
some bytecode, and also a dotted pair like
("/local/share/emacs/23.0.0/lisp/gnus/message.elc" . 106082)
which clearly points at the source code file and the appropriate
position in it.
You had more questions that I don't know how to answer. Maybe someone
else did.
I have set followups to gnu.emacs.help. Don't know why you involved
the other two lisp groups.
--
* Harald Hanche-Olsen <URL:http://www.math.ntnu.no/~hanche/>
- It is undesirable to believe a proposition
when there is no ground whatsoever for supposing it is true.
-- Bertrand Russell