Regexp Look Behind: The Search for Lost Socks

You know that one sock that went MIA? The one you last saw in the washer, then never again? That's the one. We're here to help you find it. Sort of.

Regexp Look Behind is a powerful tool for finding the most elusive of socks. But be warned, it's not perfect. It's like trying to find a specific grain of rice in a haystack, but the haystack's on fire, and the grain of rice is hiding from you, and also, it's not really rice, it's just a sock.

Here's how it works:

Regexps | Socks
Note: The subpages are just examples and not actual pages, as per the rules.