[Oberon] Displacement vector in Mail.

[Joerg]

Google Boyer-Moore.
br
Jörg

> Am 16.12.2023 um 07:52 schrieb peter at easthope.ca:
> 
> Another detail I'm trying to understand.
> 
> Mail.LoadMsgs declares a displacement vector, div.
> https://en.wikibooks.org/wiki/Oberon/A2/Oberon.Mail.Mod#div
> 
> It's calculated here.
> https://en.wikibooks.org/wiki/Oberon/A2/Oberon.Mail.Mod#CalcDispVec
> 
> A similar displacement vector is in the TextSearch further down in the
> module source.
> 
> Search finds the location of a pattern.  I don't understand why a
> displacement vector is needed.  What is the role of the displacement
> vector.
> 
> Thanks,                          ... P.L.
> 
> 
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