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> 2013/4/29 Roberto Ierusalimschy <>:
> > I may be wrong, but it seems that the two rules can be stated like that:
> >
> > 1) Do not match two empty strings in the same position. (current Lua rule)
> >
> > 2) Do not match an empty string in the same position of another match
> > (not necessarily empty). (sed rule)
> >
> > Is rule 2 really more intuitive in general or it just happen to do what
> > you want in this particular case?
> It has the advantage of making `split` trivial instead of requiring the
> sort of thing that takes the Lua Wiki 300 lines to explain.

True, but that does not make it more intuitive; it makes it more useful
in one particular case. Are there other scenarios where it is more (or
less) useful?

-- Roberto