Re: [Exist-open] regex in 1.4.2

[Dannes W. <da...@ex...>]

Hi Wouter,
On 7 Sep 2012, at 18:14 , W.S. Hager <ws...@gm...> wrote:

> Regular expressions in 1.4.2 do not behave the way I expect. I'm trying to implement https://github.com/persvr/rql basics in xquery, but it proves to be impossible due to regex problems. This expression (with ampersand escaped):
> 
> (\))|([&\|,])?([\+\*\$\-:\w%\._]*)(\(?)
> 
> produces an error for this string: eq(a,b)
> 
> FORX0003: regular expression could match empty string
> 
> Is there any way to work around this?

As far as I know do the Xquery regex differ a bit from the java regex which differ a bit from the perl5 regex etc. This makes things a bit more complicated.

In which function do you use the regex? Can you show a small piece of (self containing) xquery code (to reproduce).

cheers

Dannes