Commit 60cfd278 authored by Committed by Paul EggertBrowse files
Fix bug that created negative-length intervals.
* intervals.c (merge_interval_right, merge_interval_left): Do not zero out this interval if it is absorbed by its children, as this interval's total length doesn't change in that case. See <http://lists.gnu.org/archive/html/emacs-devel/2012-07/msg00403.html>.
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