From @masak

<masak> m​: enum :​: <un>; say ~un
<camelia> rakudo-moar 315ec6​: OUTPUT«un␤»
<masak> m​: enum :​: <un>; say +un
<camelia> rakudo-moar 315ec6​: OUTPUT«0␤»
<masak> nul! :)
<FROGGS> m​: anon enum <un>; say +un
<camelia> rakudo-moar 315ec6​: OUTPUT«[31m===[0mSORRY![31m===[0m Error
while compiling /tmp/4SVYtYZqUD Undeclared routine​: un used at
line 1 [...]
<FROGGS> m​: anon enum <un>;
<camelia> rakudo-moar 315ec6​: ( no output )
<FROGGS> weird
<masak> FROGGS​: you can't use that syntax, and for good reason.
<masak> FROGGS​: `enum` is a declarator, and expects a declaratee as a
first "argument".
<masak> I should really find better terminaology for this stuff.
<FROGGS> std​: anon enum <un>;
<camelia> std 14ad63b​: OUTPUT«ok 00​:00 136m␤»
<masak> std​: enum <un>
<camelia> std 14ad63b​: OUTPUT«ok 00​:00 136m␤»
<masak> I posit that STD is full of it.
<masak> oh wait. no.
<masak> S12 actually mentions this kind of declarations.
<FROGGS> masak​: to me both versions are identical in their meaning
<FROGGS> like anon sub { } vs. sub :​: { }
<masak> m​: my %e = enum < ook! ook. ook? >; # should work, according to S12
<camelia> rakudo-moar 315ec6​: ( no output )
<masak> m​: my %e = enum < ook! ook. ook? >; say %e.perl
<camelia> rakudo-moar 315ec6​: OUTPUT«("ook." => 1, "ook!" => 0, "ook?"
=> 2).hash␤»
<masak> ok, seems to work.
<FROGGS> m​: my %e = anon enum < ook! ook. ook? >; say %e.perl
<camelia> rakudo-moar 315ec6​: OUTPUT«("ook!" => 0, "ook?" => 2, "ook."
=> 1).hash␤»
<FROGGS> m​: my %e = enum :​: < ook! ook. ook? >; say %e.perl
<camelia> rakudo-moar 315ec6​: OUTPUT«Odd number of elements found
where hash initializer expected␤ in method STORE at
src/gen/m-CORE.setting​:10116␤ in block <unit> at /tmp/pYuofjsJWX​:1␤␤»
<FROGGS> dang
<masak> there's gotta be something rakudobuggable in all of this.
<FROGGS> yes, `anon enum <un>;` should do what `enum :​: <un>;` does
(and not silently do nothing), and `my %e = enum :​: < foo bar baz >`
should work too
* masak submits rakudobug for that
<masak> FROGGS++ # auxiliary brain

From @FROGGS

Patch​: rakudo/rakudo@8f4e908869
Test​: Raku/roast@f47d1dab1b

Closing ticket.

@FROGGS - Status changed from 'new' to 'resolved'

From @FROGGS

Two more tests​: Raku/roast@51332a9ae1