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Re: strange problem with string-replace
> David Carlisle's code (shame on him!) recurses infinitely if
> the value of "from" is an empty string.
I think infinite recursion is probably the provably correct response to
a request to replace every null substring in a string by something else.
I must have had (mustn't I?) a formal specification of the pre and post
conditions of the function when I wrote it, but I seem to have mislaid
them somewhere....
Hurt of Oxford
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