It was a logical extension of regexes, which were a very important part of perl (raku was originally perl 6). It also integrates very well with the rest of the

It was a logical extension of regexes, which were a very important part of perl (raku was originally perl 6). It also integrates very well with the rest of the language—even more so than does regex with perl. However, though I think raku's reimagination of regexes is probably the best one—and the one that feels the least bound to legacy—there are other developments in that area. For instance, oil's egg expressions - http://www.oilshell.org/preview/doc/eggex.html http://www.oilshell.org/preview/doc/eggex.html