From: Jesper Harder <harder@myrealbox.com>
Subject: Re: Form to store/recover buffer modified state?
Date: Wed, 03 Sep 2003 17:48:42 +0200 [thread overview]
Message-ID: <m3fzjdhnz9.fsf@defun.localdomain> (raw)
In-Reply-To: 4yhe3uz6zm.fsf@skjellgran.ii.uib.no
Joakim Hove <hove@bccs.no> writes:
> Jesper Harder <harder@myrealbox.com> writes:
>
>> (defmacro save-modified (&rest body)
>> (let ((temp (make-symbol "modified")))
>> `(let ((,temp (buffer-modified-p)))
>> (unwind-protect
>> (progn
>> ,@body)
>> (unless ,temp
>> (set-buffer-modified-p nil))))))
>
> Thanks a lot, it works like intended, but (e)lisp code containing the
> "magic" characters "@", "," and "`" is beyond me.
The backquote constructs aren't essential to the macro. They just
make it easier to write (and read, IMHO).
You could also write the macro this way without using backquote:
(defmacro save-modified (&rest body)
(let ((temp (make-symbol "modified")))
(list 'let (list (list temp (list 'buffer-modified-p)))
(list 'unwind-protect
(append '(progn)
body)
(list 'unless temp
(list 'set-buffer-modified-p nil))))))
next prev parent reply other threads:[~2003-09-03 15:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-28 20:08 Form to store/recover buffer modified state? Joakim Hove
2003-09-03 1:29 ` Jesper Harder
2003-09-03 7:06 ` Joakim Hove
2003-09-03 15:48 ` Jesper Harder [this message]
2003-09-05 16:18 ` Stefan Monnier
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