C++11 regex details [closed]

Question

Where can I find details about the new C++11, and in particular (at the moment) the regex library?
By details I don't mean how to use, as there seem to be many tutorials out there about that, but rather what exceptions can be thrown and what causes them, which regex syntax is more efficient in what cases, etc.

Answers should include a link, please, not just "Read the spec"!

Answer 1

Read the spec. Here's a link: n3337

Answer 2

You can find reference documentation on most if not all of C++11's standard library here. However:

which regex syntax is more efficient in what cases, etc.

You're not going to find that anywhere. Each implementation of the C++11 standard library will be different. And therefore, what is (slightly) more or less efficient will change from library to library.