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From: | Glenn Morris |
Subject: | Re: /srv/bzr/emacs/trunk r112347: * doc/lispintro/emacs-lisp-intro.texi (defcustom, defun, simplified-beginning-of-buffer, defvar, Building Robots, Review, save-excursion): `defun' and `defcustom' are now macros rather than special forms. (Bug#13853) |
Date: | Mon, 22 Apr 2013 13:02:58 -0400 |
User-agent: | Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/) |
> Maybe we can add this sentence to (info "(eintr) defun") or (info > "(eintr) Complications"), then add a cross reference to (info "(eintr) > Lisp macro"): > > "Macro" is a construct defined in Lisp, which differs from a function in > that it translates a Lisp expression into another expression which is to > be evaluated instead of the original expression. I think a few sentences in "Complications" after the bit about special forms with a link to the "Lisp macro" section of eintr is indeed all that is needed. Personally I would say something about it acting like a function for our [ie, the elisp-intro's] purposes. >>> -(Another special form, @code{defcustom}, is designed for variables >>> -that people customize. It has more features than @code{defvar}. >>> -(@xref{defcustom, , Setting Variables with @code{defcustom}}.) >> >> Why was this removed? It could have been simply changed to "Another >> function,... ". The reference to defcustom is the important thing, not >> the details of whether it is a special form or macro. > > Maybe "another macro"? For the purposes of the elisp-intro, I have no problem saying a macro is a function. You call it with arguments and it does stuff. "Another macro" is wrong because defvar is not a macro. If you want to say macro rather than function, you need to rewored it a bit more. Eg: There is a related macro, @code{defcustom}, designed for variables that people customize. It has more features than @code{defvar}. (@xref{defcustom, , Setting Variables with @code{defcustom}}.) > Thanks, I will do it the next time. (Is there anyway to amend this > commit log?) No, it's immutable. But no big deal, so don't worry about it.
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