Yes, you've encountered a bug. It's got these two tickets: https://rt.perl.org/Public/Bug/Display.html?id=124898 https://rt.perl.org/Public/Bug/Display.html?id=131964
I've got a branch in nqp and rakudo that I'll merge very soon that fixes both of these bugs. Until then you can switch $ and ^, but when the version lands that fixes the bug, that'll "misbehave" again. I think having ^|$ in the before/after assertions, i.e. literally match either the beginning or the end, should work with pre-fix and post-fix versions, as you cannot have text after the end of the string for example. Hope that helps! - Timo On 04/05/18 07:38, yary wrote: > I want to match something anywhere but at the end of a string in one > example, or anywhere but at the start of a string in another example. > The "except at start" one has me stumped. Not sure if it's me or if > I've tickled a bug. > > perl6 --version > This is Rakudo Star version 2018.01 built on MoarVM version 2018.01 > implementing Perl 6.c. > > # Match all but at end- this works as I like > > 'abcd' ~~ m/.+<!before $>/ > ｢abc｣ > > # Match all but at start- this puzzles me, 'a' is after the start of > string but still matches > > 'abcd' ~~ m/<!after ^>.+/ > ｢abcd｣ > > # This is a workaround > > 'abcd' ~~ m/<!before ^>.+/ > ｢bcd｣ > > Using a perl5 debugger session, roughly translated negative > lookbehind/lookahead work as I expect. > > DB<1> p 'abcd' =~ /(.+(?!$))/ > abc > DB<2> p 'abcd' =~ /((?<!^).*)/ > bcd > > -y
