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RE: sander's diff library

From: Greg Hudson <ghudson_at_MIT.EDU>
Date: 2003-02-09 16:28:03 CET

On Sun, 2003-02-09 at 10:19, Mats Nilsson wrote:
> Compare for instance how Microsoft developed their Excel recalculation
> engine. They had two versions of the engine in operation in the debug
> builds. One optimized assembly version and one slow but understandable
> version. Both would run and if their output differed that would trigger an
> assertion.

Doesn't work out in this case. There are multiple valid diffs between a
given source and target. Consider:

   int a() int a()
   { {
   } +}
  + +
  +int b() +int b()
  +{ +{
  +} }

(I bet that looks really bad in a proportional font.)

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Received on Sun Feb 9 16:28:54 2003

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