From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Andreas Roehler <andreas.roehler@online.de>
Cc: XEmacs-Beta@xemacs.org, python-mode@python.org, emacs-devel@gnu.org
Subject: Re: simplifying beginning-of-defun
Date: Sun, 27 Sep 2009 14:40:56 -0400 [thread overview]
Message-ID: <jwv4oqockch.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <4ABF1DED.6050906@online.de> (Andreas Roehler's message of "Sun, 27 Sep 2009 10:10:21 +0200")
>>> simplifying forms as below should ease maintenance and speed up execution.
>> To what extent does it preserve compatibility?
> Don't see anything incompatible for the moment.
I actually mentionned obvious incompatibilities in the email to which
you reply.
> With `beginning-of-defun-function',
> `end-of-defun-function' python-mode for example
> https://launchpad.net/python-mode
> may set its own function and M-x beginning-of-defun then
> will work still - which is not the case presently and my point of
> depart here.
I do not understand the above paragraph.
>> Apparently it makes beginning-of-defun-raw ignore
>> beginning-of-defun-function, and it calls end-of-defun-function with one
>> argument contrary to the current situation where it's called without
>> any argument.
> An argument is useful here: as a repeat or specifier.
I was pointing out incompatibilities. Also the current way
end-of-defun-function is defined, it does not need a repeat because it
only jumps from the beginning of a defun to its end (i.e. it doesn't do
the same as end-of-defun).
>> Which performance problem is it trying to solve?
> All which useless code execution causes.
> Regard the lines of code saved that way to have an approximation.
This is much too general: OT1H it's not true (larger code is not
necessarily slower), OTOH (and more importantly) it doesn't help me
understand which specific performance problem this is aiming to address.
> open-paren-in-column-0-is-defun-start is purely redundant, as the
> regexp may specify that - and indeed does already(?) its just that
> what I read with "^\\s("
Again, please move this discussion to a separate thread.
> Mentioned code of a end-of-defun-function in lisp.el is a bug.
> Suggest to cancel it.
I do not know which code nor which bug you talking about. Your code?
Emacs's code?
> Let the -raw functions do everything needed for emacs-lisp.
AFAICT, that's already the way it's designed (that's why it doesn't set
the mark, for example).
> Funcalls of beginning-of-defun-function, end-of-defun-function should
> be reserved for progmodes.
I have no idea what you mean by "progmodes".
> BTW if mode-specific, probably it should be introduced as a local var
> from the very beginning?
I'm not sure I understand. Are you suggesting we
(make-varible-buffer-local 'beginning-of-defun-function)?
Stefan
next prev parent reply other threads:[~2009-09-27 18:40 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-26 17:52 simplifying beginning-of-defun Andreas Roehler
2009-09-26 21:44 ` Stefan Monnier
2009-09-27 8:10 ` Andreas Roehler
2009-09-27 18:40 ` Stefan Monnier [this message]
2009-09-28 6:50 ` Andreas Roehler
2009-09-28 22:46 ` Stefan Monnier
2009-09-29 6:53 ` Andreas Roehler
2009-09-29 8:29 ` Andreas Roehler
2009-09-27 10:26 ` Andreas Roehler
2009-09-27 11:17 ` Eric M. Ludlam
2009-09-27 18:53 ` Stefan Monnier
2009-09-27 20:07 ` Eric M. Ludlam
2009-09-27 22:52 ` Stefan Monnier
2009-09-28 2:04 ` Eric M. Ludlam
2009-09-28 4:06 ` Stefan Monnier
2009-09-28 11:20 ` Eric M. Ludlam
2009-09-29 6:50 ` Alan Mackenzie
2009-09-27 19:06 ` Glenn Morris
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