Modified quantifier should be better explained.

[bbkr]

https://docs.perl6.org/language/regexes#Modified_quantifier:_%

It's not clear that quantifier in a+ % ',' example is applied to delimited items count instead of character class. I had to check Roast test to see that this:

$ perl6 -e 'say "aa,aaaa,aaa" ~~ /a+ % ","/'
｢a｣  # ooops!

Should be double wrapped like:

$ perl6 -e 'say "aa,aaaa,aaa" ~~ /[a+]+ % ","/'
｢aa,aaaa,aaa｣

I think adding additional more complex example should make it more clear:

$ perl6 -e 'say "foo,bar,baz" ~~ / [\w+] ** 2 % "," /'
｢foo,bar｣

And here is the design discussion for reference: https://irclog.perlgeek.de/perl6/2011-09-20#i_4453865

[AlexDaniel]

FWIW I agree that this is not a trap, but a simple misunderstanding that should be covered in language/regexes. A trap would be something that makes you think that your code works, but in reality there are edge cases that may lead to disastrous results. We should delete some sections from language/traps that do not match this definition.

[rafaelschipiura]

So, reopening because the docs on quantifiers are still LTA.

[AlexDaniel]

@rafaelschipiura I was thinking that a206c60 is enough, I guess not. What exactly is less than awesome?