[perl #131243] [REGEX] Interpolating a Hash in a regex treats it as a list and errors out

[Sam S. via RT]

On Tue, 02 May 2017 08:35:34 -0700, c...@zoffix.com wrote:
> Both of these forms produce the error below
> 
> my %stuff = ;
> say 'foo bar meows' ~~ m:g/ %stuff\S+ /;
> say 'foo bar meows' ~~ m:g/ %() \S+ /;
> 
> # P6opaque: no such attribute '$!reified' in type List when trying to
> get
> # a value in block  at z2.p6 line 8
> 
> What did I expect to happen? No idea, I just randomly tried the code.
> If it's not meant to work then at least a better error should be
> shown.

S05 says¹:

The use of a hash variable in patterns is reserved.

So yes, this should be made to throw a nicer error.

---
[1] http://design.perl6.org/S05.html#Variable_(non-)interpolation

[perl #131243] [REGEX] Interpolating a Hash in a regex treats it as a list and errors out

[via RT]

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Both of these forms produce the error below

my %stuff = ;
say 'foo bar meows' ~~ m:g/ %stuff\S+ /;
say 'foo bar meows' ~~ m:g/ %() \S+ /;

# P6opaque: no such attribute '$!reified' in type List when trying to get
# a value in block  at z2.p6 line 8

What did I expect to happen? No idea, I just randomly tried the code. If it's 
not meant to work then at least a better error should be shown.