Q:

Regular expression that matches "articles" but not "articles-main"?

How would I write a regular expression that matches any URL containing the segment "articles" followed by any other segment, but does NOT match URLs with the segment "articles-main"?
So it would match these:
www.mysite.com/articles
www.mysite.com/articles/tinman

But not these:
www.mysite.com/articles-main
www.mysite.com/articles-main/tinman

This is for use in ExpressionEngine if it matters.

A:

Use a so called negative lookahead:
articles(?!-main)

or more precisely:
mysite.com/articles(?!-main)

