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bug#8130: 23.2; transient-rectangle-mode

From: Stefan Monnier
Subject: bug#8130: 23.2; transient-rectangle-mode
Date: Sun, 27 Feb 2011 22:30:26 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

> I would like to propose transient-rectangle-mode.  Working with
> rectangles sometimes is a bit hard to understand what exactly the
> boundaries of the rectangle are.

Yes, that would be good.  I think the best way to go about doing it is
to move the highlighting of the region to Elisp code.
One element to doing it would be to add a pre-redisplay-hook of some
sort which could update a "region overlay" (move its beg and end to
region-beginning and region-end), at which point it should be reasonably
easy to make the region appear any other way (e.g. as a rectangle or
a combination of the two as you suggest).


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