Elisp mechanism for converting PCRE regexps to emacs regexps

Question

I admit significant bias toward liking PCRE regexps much better than emacs, if no no other reason that when I type a \'(\' I pretty much always want a grouping operator. And, o

Answer 1

Possibly relevant is visual-regexp-steroids, which extends query-replace to use a live preview and allows you to use different regexp backends, including PCRE.