[syslog-ng] regex and $1..$9 documentation

[Evan Rempel]

I understand regex just fin, I don't need a reference to regular expressions, but
I can't find any reference in the syslog-ng documentation to using the $1..$9 syntax
for template creation and how that works if multiple filters are used/matched
and what regex syntax is supported such as

.{5,419}test(ed|ing) syslog

Any reference would be good :-)

-- 
Evan Rempel                erempel at uvic.ca
Senior Programmer Analyst        250.721.7691
Computing Services
University of Victoria