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  • Committer: John Arbash Meinel
  • Date: 2009-08-26 16:03:59 UTC
  • mto: (4634.6.7 2.0)
  • mto: This revision was merged to the branch mainline in revision 4660.
  • Revision ID: john@arbash-meinel.com-20090826160359-ge4mai928bi3a5g2
Fix bug #419241. If a graph had a mainline ghost
we could get a segfault during KnownGraph.merge_sort().

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that only certain files should be compared.
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Performance can be further improved by caching comparisons to avoid repeating
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them.  Caching could potentially be performed by ``diff`` and perhaps by
 
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them.  Caching could potentially be performed by ``diff`` and perhaps by 
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``merge``.  Merge is aware of the relationship of a text merge's result to
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the THIS value, and the THIS value is generally the basis value.  So the
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comparison is latent, but present.  The only issue is extracting it.