[cinntaile]

Readability is very important though. If you can spend a couple of more seconds of programmming time to prevent several minutes(or longer!) of understanding time, I'd call that a good use of resources. I don't think that link is quite there yet but it's a good start.

[tyingq]

It's more readable individually, but for many regexes the verbose nature could make it harder to read overall.

[Zababa]

There's a good article about K that can give you a feel on how long names may not always be more readable: http://nsl.com/papers/denial.html