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

[Christian Bartolomaeus via RT]

This gives no longer an internal error:

$ perl6 -e 'sub infix:[/./]'
===SORRY!=== Error while compiling -e
Colon pair value '/./' too complex to use in name
at -e:1
------> sub infix:[/./]⏏<EOL>

It fails the same way as (for instance)

$ perl6 -e 'sub infix:["+"]'
===SORRY!=== Error while compiling -e
Colon pair value '"+"' too complex to use in name
at -e:1
------> sub infix:["+"]⏏<EOL>

Since infix:["+"] is explicitely mentioned in S02 as being equivalent to 
infix:<+> this looks like NYI to me.