This package provides `pcre2el' or `rxt' (RegeXp Translator or RegeXp Tools), 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:

- convert Emacs syntax to PCRE; - convert either syntax to `rx', an S-expression based regexp syntax untangle complex regexps by; - showing the parse tree in `rx' form and highlighting the; - corresponding chunks of code show the complete list of strings (productions) matching a regexp, provided the list is finite; - provide live font-locking of regexp syntax (so far only for Elisp buffers).