Re: sub default question

On 11/19/25 1:38 AM, Peter Pentchev wrote:
> On Wed, Nov 19, 2025 at 01:13:23AM -0800, ToddAndMargo via perl6-users wrote:
>> Hi All,
>>
>> https://github.com/rakudo/rakudo/blob/main/src/core.c/Proc.rakumod
>> 232: multi sub run(*@args where .so, :$in = '-', :$out = '-', :$err = '-',
>>
>> Here is my confusion.  The above sets
>>     :$in = '-', :$out = '-', :$err = '-',
>> to "-" as the default.
>>
>> But if you leave
>>     :$out  and :$err
>> off the run line, STDOUT and STDERR do not
>> get captured and are sent to the console.
> 
> ...that's exactly what "-" means.
> 
> G'luck,
> Peter
> 


According to
    https://docs.raku.org/language/glossary#Adverbial_pair

adverbial pair	pair notation
:foo	        foo => True

How did "True" get changed into "-"?