Re: patternsize(p), finding the min & max length of substring matched by pattern p

[Dirk Laurie <dirk.laurie@...>]

2012/1/14 Duncan Cross <duncan.cross@gmail.com>:
> Hi List,
>
> I recently had a case where I wanted to find the maximum and minimum
> number of characters that can be matched by a given Lua string
> pattern, as used by string.match() etc.
>
> I couldn't find any existing implementation, so here's mine. It's
> pretty simple, but I'd be interested to know if anyone can see a case
> that it would give the wrong answer for, or any other critique.
>


    p=".-."
    print(patternsize(p))
1	nil