Raku-Regex.md – -

>

On my name is toto

<?toto> zero lenght <?nn> me -> ｢me｣
<( and )> : start ant end of match
<?> Always match : succesfully math null string
<!> Always fail

say 'abc' ~~ / a <( b )> c/;
# OUTPUT: «｢b｣␤» 
say 'abc' ~~ / <(a <( b )> c)>/;
# OUTPUT: «｢bc｣␤»

Backtrack

a*! Greedy (default a*)
a*? Frugal (alias: minimal or non-greedy)
a*: Ratchet (alias: non-backtracking)
a ** 1..10 Numbered quantifier

| Vs ||

|| is the alteration sequence, try from first to last
is Longest Token Matching alteration, goes for the branch with logest matching first