[perl #117737] [WEIRD] [BUG] Internal error when doing infix:[/./] in Rakudo

[Christian Bartolomaeus via RT]

This fails now with a typed X::Syntax::Extension::TooComplex and a clear error 
message (see rakudo commit d0885e56e8):

$ perl6 -e 'sub infix:[/./] { say $^a, $^b }; 5@4'
===SORRY!=== Error while compiling -e
Colon pair value '/./' too complex to use in name
at -e:1
------> sub infix:[/./]⏏ { say $^a, $^b }; 5@4

A test has been added to roast with commit 21a9ea0f2d

I'm closing this ticket as 'resolved'.