restar

Name

restar -- compute `*' of a regular expression

Synopsis

restar re

restar <re

Description

restar computes the Kleene star of re, and writes the result on standard output.

re must conform to the Grail format for regular expressions.

Examples

% cat re1
{}

% restar <re1
{}

% cat re2
""

% restar re2
""

% cat re3
(a+b)*(abc)

% restar <re3
((a+b)*abc)*

% cat re4
(((a)+(b))*)

% restar re4
(a+b)*

Authors