Hello!

On Tue, Oct 16, 2012 at 11:16:00PM +1000, David Gwynne wrote:

[...]

> >> + if (clcf->regex) {
> >> + rc = ngx_regex_exec(clcf->regex->regex, &r->uri, captures, 3);
> >> +
> >> + if (rc == NGX_REGEX_NO_MATCHED) {
> >> + return NGX_ERROR;
> >> + }
> >> +
> >> + v->data = r->uri.data + captures[0];
> >> + v->len = captures[1] - captures[0];
> >
> > Note that result is actually unstable in the regexp location case,
> > as the code re-executes regular expression against a possibly
> > changed URI.
>
> is there a way to keep the equivalent of $0 around after the original regex is run?

It can be easily done without any additional code, using named
captures:

location ~ ^(?<matched>/foo|/bar) {
# here one can use $matched
}

--
Maxim Dounin
http://nginx.com/support.html

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