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Re: multi-region.el --- Mapping commands over multiple active regions.
From: |
Mathias Dahl |
Subject: |
Re: multi-region.el --- Mapping commands over multiple active regions. |
Date: |
Sat, 07 Jan 2006 10:58:06 +0100 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
"Richard M. Stallman" <address@hidden> writes:
> Here's one idea. Suppose that region-beginning returned a list of
> region beginnings, and region-end returned a list of region ends.
> That would be a clean way to tell a command that there are
> multi-regions in effect.
Could there be risk here?
Suppose I have three regions:
r1: 10 to 20
r2: 30 to 40
r3: 50 to 60
If I understand your suggestion, `region-beginning' and `region-end',
respectively, would return the following values:
(region-beginning) => (10 30 50)
(region-end) => (20 40 60)
Could I, as a programmer, trust that the ordering of those values are
always in sync?
Maybe these functions are only helper functions, and when I need the
*real* end of a region, I will ask for it explicitly using the
beginning of the region as argument?