Version 1.12 of package Pcre2el has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Pcre2el describes itself as: ======================= regexp syntax converter ======================= More at https://elpa.nongnu.org/nongnu/pcre2el.html ## Summary: 1 pcre2el: convert between PCRE, Emacs and rx regexp syntax ═══════════════════════════════════════════════════════════ 1.1 Overview ──────────── `pcre2el' or `rxt' (RegeXp Translator or RegeXp Tools) is a utility for working with regular expressions in Emacs, based on a recursive-descent parser for regexp syntax. In addition to converting (a subset of) PCRE syntax into its Emacs equivalent, it can do the following: ## Recent NEWS: [Not provided 🙁]