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Re: About the overlay property `modification-hooks'
From: |
Eli Zaretskii |
Subject: |
Re: About the overlay property `modification-hooks' |
Date: |
Sun, 24 Feb 2013 05:52:16 +0200 |
> Date: Sun, 24 Feb 2013 11:35:55 +0800
> From: Xue Fuqiao <xfq.free@gmail.com>
>
> 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.
See the part underlined above.