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Re: `save-excursion' defeated by `set-buffer'
From: |
rusi |
Subject: |
Re: `save-excursion' defeated by `set-buffer' |
Date: |
Tue, 15 Mar 2011 21:31:32 -0700 (PDT) |
User-agent: |
G2/1.0 |
On Mar 16, 12:02 am, Jason Earl <je...@notengoamigos.org> wrote:
> On Tue, Mar 15 2011, Stefan Monnier wrote:
> >> People will not naturally use `save-excursion' nowadays just to save
> >> the current buffer.
>
> > Maybe not naturally, no. But thanks to the pressure of years of old
> > code flying around the web, they will do it nowadays on a regular
> > basis. But indeed, thanks to threads like this one and to the warning
> > I added, I hope I can reverse the trend.
>
> > Stefan
>
> Precisely, these warnings are not for people like you, Drew, or David.
> You guys have the experience necessary to make the correct choice.
> Warnings like this are *very* helpful to people like me, however, that
> have no experience with Emacs Lisp, but would like to write Elisp
> anyhow.
>
> To be honest, for the purpose of teaching newbies it almost doesn't
> matter what the warning says either. As long as it is clear that
> save-excursion and set-buffer are not to be used together then it is a
> win.
>
> And yes, I realize that what I should do is read the manual umpteen
> million times, and memorize a pile of stuff. Actually, in this case
> this might not be such a good idea. I assumed that I had picked up the
> save-excursion + set-buffer idiom while I was perusing the Gnus code,
> but in checking the manual I think that I might have picked it up from
> the /Introduction to Emacs Lisp/. Using save-excursion and set-buffer
> together is covered in:
>
> 4.4.3 `save-excursion' in `append-to-buffer'
Aha so that's the culprit
(info "(eintr)append save-excursion")
A 30 year old project has 30 years of tradition, 30 years of of
stability...
And 30 years of cruft.
Anyone for a heavy-duty coarse-grade scrub?
Thanks Jason
- Re: `save-excursion' defeated by `set-buffer', (continued)
- Message not available
- Re: `save-excursion' defeated by `set-buffer', Stefan Monnier, 2011/03/15
- Re: `save-excursion' defeated by `set-buffer', PJ Weisberg, 2011/03/15
- Re: `save-excursion' defeated by `set-buffer', David Kastrup, 2011/03/15
- RE: `save-excursion' defeated by `set-buffer', Drew Adams, 2011/03/15
- Message not available
- Re: `save-excursion' defeated by `set-buffer', Stefan Monnier, 2011/03/15
- Message not available
- Re: `save-excursion' defeated by `set-buffer', Stefan Monnier, 2011/03/15
- RE: `save-excursion' defeated by `set-buffer', Drew Adams, 2011/03/15
- Re: `save-excursion' defeated by `set-buffer', Stefan Monnier, 2011/03/15
- Re: `save-excursion' defeated by `set-buffer', Jason Earl, 2011/03/15
- RE: `save-excursion' defeated by `set-buffer', Drew Adams, 2011/03/15
- Re: `save-excursion' defeated by `set-buffer',
rusi <=
- Re: `save-excursion' defeated by `set-buffer', David Kastrup, 2011/03/16
- Re: `save-excursion' defeated by `set-buffer', rusi, 2011/03/17
- Re: `save-excursion' defeated by `set-buffer', rusi, 2011/03/17
- Re: `save-excursion' defeated by `set-buffer', Antoine Levitt, 2011/03/17
- Message not available
- RE: `save-excursion' defeated by `set-buffer', Uday S Reddy, 2011/03/16
- Message not available
- Re: `save-excursion' defeated by `set-buffer', Tim X, 2011/03/12
- Message not available
- Re: `save-excursion' defeated by `set-buffer', Uday Reddy, 2011/03/11
Re: `save-excursion' defeated by `set-buffer', David Kastrup, 2011/03/10
Re: `save-excursion' defeated by `set-buffer', rusi, 2011/03/31