Re: is this behavior correct?

[john gladkih 599133195 <john@...>]

On 13.06.2011 15:26, Peter Cawley wrote:
> On Mon, Jun 13, 2011 at 12:23 PM, Xavier Wang<weasley.wx@gmail.com>  wrote:
> > local s = "abcdef"
> > print(string.match(s, "(^abc)(def$)"))
> > shows "nil"
> > but:
> > local s = "abcdef"
> > print(string.match(s, "^(abc)(def)$"))
> > shows "abc def"
> > is this behavior correct?
>
> According to the manual, yes:
>
> A '^' at the beginning of a pattern anchors the match at the beginning
> of the subject string. A '$' at the end of a pattern anchors the match
> at the end of the subject string. At other positions, '^' and '$' have
> no special meaning and represent themselves.

that's not standard regexp interpretation.

[~]>perl -e "print 'abcdef' =~ /^(abc)(def)$/"
abcdef
>perl -e "print 'abcdef' =~ /(^abc)(def$)/"
abcdef