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SORT VARIABLES: Improve stability of sort.
authorBen Pfaff <blp@cs.stanford.edu>
Wed, 20 Sep 2017 15:36:18 +0000 (08:36 -0700)
committerBen Pfaff <blp@cs.stanford.edu>
Sat, 23 Sep 2017 17:49:37 +0000 (10:49 -0700)
The sort was being made "stable" by comparing variables' addresses in
memory.  There's nothing particularly predictable about that, especially
from one malloc implementation to another.  This commit fixes the stability
by comparing the variables' dictionary indexes instead.

Bug #52072.


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