[perl #129915] [LTA] ∞ as literal Inf not recognized in signatures

[via RT]

# New Ticket Created by  Zoffix Znet 
# Please include the string:  [perl #129915]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=129915 >


∞ as literal Inf not recognized in signatures, unless it's a signature  
literal:

<ZoffixW> m: sub (∞) {}
<camelia> rakudo-moar 200364: OUTPUT«===SORRY!=== Error while  
compiling <tmp>␤Missing block␤at <tmp>:1␤------> sub (⏏∞) {}␤»
<ZoffixW> m: say :(∞)
<camelia> rakudo-moar 200364: OUTPUT«Inf␤»

13:51   iBakeCake       m: multi sub infix:<≅> (∞, ∞) { Bool::True };
13:51   camelia         rakudo-moar 200364: OUTPUT«===SORRY!=== Error while  
compiling <tmp>␤Missing block␤at <tmp>:1␤------> multi sub infix:<≅>  
(⏏∞, ∞) { Bool::True };␤»
13:51   iBakeCake       m: multi sub infix:<≅> (Inf, Inf) { Bool::True };
13:51   camelia         rakudo-moar 200364: ( no output )