From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: hideshow minor-mode
Date: Tue, 16 Oct 2012 07:17:44 +0200 [thread overview]
Message-ID: <87mwznhu6f.fsf@web.de> (raw)
In-Reply-To: <mailman.11086.1350361261.855.help-gnu-emacs@gnu.org> (Shiyuan's message of "Mon, 15 Oct 2012 23:20:56 -0500")
Hi again,
> Michael,
> Thanks for the detailed reply. However, it doesn't work for me. I
> guess I make a mistake somewhere. Here is mymode.el:
>
> http://paste.lisp.org/display/132611
Yes, there are two little errors.
First, you register your mode in `hs-special-modes-alist' after you
enable hs-minor-mode. That's too late, because hideshow then has
already initialized its stuff. Also, adding to `hs-special-modes-alist'
has to be done only once, and not every time mymode is enabled.
Second, you quoted mymode-forward-sexp-func in your quoted list:
| '(mymode "\\[begin]" "\\[end]" "#" 'mymode-forward-sexp-func nil))
^
That's not needed, remember, the quote before a list already prevents
evaluation of its members (you want to specify a symbol).
So, this should do the trick:
--8<---------------cut here---------------start------------->8---
(require 'hideshow)
(defun mymode-forward-sexp-func (arg)
"move over ARG balanced blocks; This is needed by hs-minor-mode"
(dotimes (number arg)
(let ((counter 0))
(catch 'done
(while t
(search-forward-regexp "\\[begin]\\|\\[end]")
(setq counter (+ counter (if (looking-back "\\[begin]") 1 -1)))
(when (= counter 0) (throw 'done t)))))))
(add-to-list 'hs-special-modes-alist '(mymode "\\[begin]" "\\[end]" "#" mymode-forward-sexp-func))
(define-derived-mode mymode fundamental-mode
"mymode is a major mode for fun."
(setq mode-name "mymode")
(setq comment-start "#")
(setq comment-end "")
(hs-minor-mode 1))
--8<---------------cut here---------------end--------------->8---
Of course, that's all just for playing. If mymode was a major-mode
really to be used, you would leave it up to the user to call
`hs-minor-mode' e.g. in `mymode-hook', and not call it in the mode
definition.
Michael.
next prev parent reply other threads:[~2012-10-16 5:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.11001.1350265231.855.help-gnu-emacs@gnu.org>
2012-10-15 18:04 ` hideshow minor-mode Michael Heerdegen
2012-10-15 23:30 ` Shiyuan
[not found] ` <mailman.11078.1350343816.855.help-gnu-emacs@gnu.org>
2012-10-16 1:03 ` Michael Heerdegen
2012-10-16 4:20 ` Shiyuan
[not found] ` <mailman.11086.1350361261.855.help-gnu-emacs@gnu.org>
2012-10-16 5:17 ` Michael Heerdegen [this message]
2012-10-16 14:40 ` Shiyuan
[not found] ` <mailman.11111.1350398455.855.help-gnu-emacs@gnu.org>
2012-10-16 18:09 ` Michael Heerdegen
2012-10-15 1:40 Shiyuan
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