The Regex Coach is a graphical
application for Windows which
can be used to experiment with (Perl-compatible) regular expressions
interactively. It has the following features:
It shows whether a regular expression matches a particular target
string.
It can also show which parts of the target string correspond
to captured register groups or to arbitrary parts of the regular
expression.
It can "walk" through the target string one match at a
time.
It can simulate Perl's split and s///
(substitution) operators.
It tries to describe the regular expression in plain English.
It can show a graphical representation of the regular expression's
parse tree.
It can single-step through the matching process as performed by
the regex engine.
Everything happens in "real time", i.e. as soon as you
make a change somewhere in the application all other parts are
instantly updated.
