Regex positional capture in map

[Maxim Dounin]

Hello!

On Mon, Nov 03, 2014 at 11:02:23PM +0100, B.R. wrote:

> On Mon, Nov 3, 2014 at 3:22 PM, Igor Sysoev <igor at sysoev.ru> wrote:
> 
> > Using named captures works (as demonstrated by
> > https://stackoverflow.com/questions/12459518/nginx-extract-a-value-from-a-variable-or-any-string),
> > though:
> > map $host $foo {
> >     "~*^www\.(?<domain>.*)$"    $domain; # Named capture wins
> >     default                    $foo;
> > }
> >
> >
> > default  $host;
> >
> > ​Yup, my bad: typo while writing the example map.​
> It does not interfere much with the problem though. Any piece of advice? :o)

As you already found yourself, map{} doesn't allow to use 
positional captures in resulting values.  Use named captures 
instead.

-- 
Maxim Dounin
http://nginx.org/