As soon as there is a _complete_ regex reference in the readme, it may be worth a try. The main problem with _any_ regex tool or programming language or ... is the subtle and not so subtle differences between the various regex implementations - like the "normal" and "extended" mode of sed.

This phrase:

    sd uses regex syntax that you already know from JavaScript and Python.

says it all.

I still haven't found a better short overview of various regex engines than that: https://web.archive.org/web/20130830063653/http://www.regula...