or download this
#! perl -slw
use strict;
...
print 'splits differ' if "@splits" ne "@regexs" and "@regexs" eq "@sca
+ns";
print 'regexs differ' if "@splits" ne "@regexs" and "@splits" eq "@sca
+ns";
print 'scans differ' if "@scans" ne "@regexs" and "@splits" eq "@reg
+exs";