Fix non-determinism in diffing algorithm #247
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A previous attempt to add non-determinism to the diffing algorithm unfortunately broke the algorithm for half the cases. This change modifies the algorithm to truly switch between starting with a forward search versus a reverse search. The main for-loop of Difference would switch repeatedly between performing a forward search, then a reverse search, and vice-versa. Since we can't jump into the middle of a for-loop to start with the reverse search first, we use a series of labels and goto statements to accomplish the same effect. Fixes #238
neild
approved these changes
Nov 24, 2020
This was referenced Mar 6, 2021
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A previous attempt to add non-determinism to the diffing algorithm
unfortunately broke the algorithm for half the cases.
This change modifies the algorithm to truly switch between starting
with a forward search versus a reverse search.
The main for-loop of Difference would switch repeatedly between
performing a forward search, then a reverse search, and vice-versa.
Since we can't jump into the middle of a for-loop to start with the
reverse search first, we use a series of labels and goto statements
to accomplish the same effect.
Fixes #238