From: Xue Fuqiao <xfq.free@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: About the overlay property `modification-hooks'
Date: Sun, 24 Feb 2013 11:35:55 +0800 [thread overview]
Message-ID: <20130224113555.6f39233dcc506a402902ff44@gmail.com> (raw)
In (info "(elisp) Overlay Properties"):
When called after a change, each function receives five arguments:
the overlay, `t', the beginning and end of the text range just
modified, and the length of the pre-change text replaced by that
range. (For an insertion, the pre-change length is zero; for a
deletion, that length is the number of characters deleted, and the
post-change beginning and end are equal.)
I'm perplexed about the sentence in the parentheses. What does the
"post-change beginning and end" mean here? Can anybody help? Thanks.
--
Best regards, Xue Fuqiao.
http://www.emacswiki.org/emacs/XueFuqiao
next reply other threads:[~2013-02-24 3:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-24 3:35 Xue Fuqiao [this message]
2013-02-24 3:52 ` About the overlay property `modification-hooks' Eli Zaretskii
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