Built-in Functions and Special Forms

Built-in Functions and Special Forms

[Artist]

Hi,
 I have been using emacs now for over an year.
 and now I like to know how I can do some work with lisp.
 
 How I can find the built-in functions for lisp:

 command-index for emacs or C-h f TAB won't work here cause it will
also give me the function defined in .el or .elc files.

 I am looking more like  more or less like:

(nth N LIST)
(eq OBJ1 OBJ2)
(> NUM1 NUM2)
(% X Y)

Similary for Special Forms:

 I am seeking the list like:

(defun NAME ARGLIST [DOCSTRING] BODY...)
(let VARLIST BODY...)
(if COND THEN ELSE...)
(setq SYM VAL SYM VAL ...)
(while TEST BODY...)
(function ARG)
(quote ARG)
(progn BODY ...)

Thanks for help in advance.

Artist.

Re: Built-in Functions and Special Forms

[Barry Margolin]

In article <de3ad953.0302261250.5fbca113@posting.google.com>,
Artist <googleartist@yahoo.com> wrote:
>Hi,
> I have been using emacs now for over an year.
> and now I like to know how I can do some work with lisp.
> 
> How I can find the built-in functions for lisp:

Read the Emacs Lisp Reference Manual.

-- 
Barry Margolin, barry.margolin@level3.com
Genuity Managed Services, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.

Re: Built-in Functions and Special Forms

[Unknown]

Barry Margolin wrote:

> In article <de3ad953.0302261250.5fbca113@posting.google.com>,
> Artist <googleartist@yahoo.com> wrote:
>>Hi,
>> I have been using emacs now for over an year.
>> and now I like to know how I can do some work with lisp.
>> 
>> How I can find the built-in functions for lisp:
> 
> Read the Emacs Lisp Reference Manual.

I concur.  It's very well written.  Very useful.

Re: Built-in Functions and Special Forms

[Pascal Bourguignon]

googleartist@yahoo.com (Artist) writes:

> Hi,
>  I have been using emacs now for over an year.
>  and now I like to know how I can do some work with lisp.
>  
>  How I can find the built-in functions for lisp:

(let ((internals ()))
  (mapatoms (lambda (sym)
              (when (and (functionp sym) (subrp (symbol-function sym)))
                (push sym internals))))
  (insert (format "%S\n" internals)))

I've not found any predicate to distinguish between built-in functions
and special forms.


-- 
__Pascal_Bourguignon__                   http://www.informatimago.com/
----------------------------------------------------------------------
There is a fault in reality. Do not adjust your minds. -- Salman Rushdie

Re: Built-in Functions and Special Forms

[Greg Hill]

At 2:38 AM +0100 2/27/03, Pascal Bourguignon wrote:
>I've not found any predicate to distinguish between built-in functions
>and special forms.

In Emacs-21, the documentation is consistent enough that this seems 
to always work.

(defun special-form-p (symbol)
     (string-match "\\.\\.\\.\\|&rest" (documentation symbol)))

--Greg

Re: Built-in Functions and Special Forms

[Greg Hill]

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>At 2:38 AM +0100 2/27/03, Pascal Bourguignon wrote:
>>I've not found any predicate to distinguish between built-in functions
>>and special forms.
>
>In Emacs-21, the documentation is consistent enough that this seems 
>to always work.
>
>(defun special-form-p (symbol)
>     (string-match "\\.\\.\\.\\|&rest" (documentation symbol)))

Of course that should really be:

(defun special-form-p (symbol)
     (and (subrp (symbol-function symbol))
          (string-match "\\.\\.\\.\\|&rest" (documentation symbol))))

--Greg

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Re: Built-in Functions and Special Forms

[Miles Bader]

Pascal Bourguignon <pjb@informatimago.com> writes:
> I've not found any predicate to distinguish between built-in functions
> and special forms.

See `subr-arity'.

-Miles
-- 
o The existentialist, not having a pillow, goes everywhere with the book by
  Sullivan, _I am going to spit on your graves_.

Re: Built-in Functions and Special Forms

[Artist]

Greg Hill <ghill@synergymicro.com> wrote in message news:<mailman.2511.1046318512.21513.help-gnu-emacs@gnu.org>...
> >At 2:38 AM +0100 2/27/03, Pascal Bourguignon wrote:
> >>I've not found any predicate to distinguish between built-in functions
> >>and special forms.
> >
> >In Emacs-21, the documentation is consistent enough that this seems 
> >to always work.
> >
> >(defun special-form-p (symbol)
> >     (string-match "\\.\\.\\.\\|&rest" (documentation symbol)))
> 
> Of course that should really be:
> 
> (defun special-form-p (symbol)
>      (and (subrp (symbol-function symbol))
>           (string-match "\\.\\.\\.\\|&rest" (documentation symbol))))
> 
> --Greg
> --
Code below works fine.
(defun my-special-forms ()
(let
    ((internals () ))
  (mapatoms (lambda (sym)
	      (when
		  (and 
		   (functionp sym)
		   (subrp (symbol-function sym))
		   (eq 'unevalled (cdr (subr-arity (symbol-function sym))))
		   )
		(push sym internals)
		)

	      )
	    )
  internals
;  (insert (format "%S\n" internals))
)
)