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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.