Dnia 09-04-2007, pon o godzinie 19:12 -0400, William D Clinger
napisał(a):

> (text-position=? position1 position2)
> 
> True iff both positions identify the same positions within
> the same text.  Should run in O(1) time.

If text is immutable, then the concept of “same text” is unclear:

• If it means eqv?, then achieving O(1) is impractical.

• If it means eq?, then it distinguishes cases for which there is
  no practical reason to distinguish them (when distinct text objects
  contain equivalent text).

-- 
   __("<         Marcin Kowalczyk
   \__/       [EMAIL PROTECTED]
    ^^     http://qrnik.knm.org.pl/~qrczak/


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