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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: Is it safe to use the combine-after-change-calls like this?
Date: Wed, 17 Apr 2019 14:28:08 -0400	[thread overview]
Message-ID: <jwvd0lkxzk5.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: PS1PR06MB2759C6E76C921A9FB6DD9254A8250@PS1PR06MB2759.apcprd06.prod.outlook.com

> 1. When multiple-cursors activates, set combine-after-change-calls to t
> 2. Edit the buffer with multiple active cursors
> 3. Before multiple-cursors deactivates, call combine-after-change-execute
> and set combine-after-change-calls back to nil.

As for the subject's question: I think it might be safe, but it probably
won't make a difference: combine-after-change-calls is ignored when
before-change-functions is non-nil.

Also, regarding interaction with non-CC-mode buffers: you might be able
to improve the efficiency of the code by executing the command of the
various cursors starting with the one closest to point-max and finishing
with the one closest to point-min.

For CC-mode buffers I have more trouble guessing if such an ordering
would also help, or would hurt, or make no difference.


        Stefan




  parent reply	other threads:[~2019-04-17 18:28 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-17  0:21 Is it safe to use the combine-after-change-calls like this? Zhang Haijun
2019-04-17  1:14 ` Stefan Monnier
2019-04-17 18:28 ` Stefan Monnier [this message]
  -- strict thread matches above, loose matches on Subject: below --
2019-04-18  5:34 Zhang Haijun
2019-04-18 12:21 ` Stefan Monnier
2019-04-26 10:31 ` Alan Mackenzie
2019-04-26 12:09   ` Stefan Monnier

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