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bug#9642: move-overlay creates an empty overlay with the evaporate prope
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From: |
Eli Zaretskii |
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Subject: |
bug#9642: move-overlay creates an empty overlay with the evaporate property |
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Date: |
Mon, 03 Oct 2011 05:56:37 +0200 |
> Date: Sun, 02 Oct 2011 18:09:43 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: monnier@iro.umontreal.ca, 9642@debbugs.gnu.org
>
> But regardless of the more-general issue,
> the behavior of move-overlay is not undefined in this case.
> The Elisp documentation states that for overlays with the
> evaporate property, "If this property is non-nil, the overlay
> is deleted automatically if it becomes empty (i.e., if its
> length becomes zero)." This is a general statement about
> overlays, and it constrains the behavior of all Emacs built-ins.
The interval 0..1 is not empty.