On Sun, 13 Dec 2015 06:03:35 -0800, elizabeth wrote:
> Completely right!
> 
> 5b6cbc7d54ce5ad252cf74 fixes Pair.perl properly.
> 
> 
> Liz
> 
> > On 13 Dec 2015, at 11:16, Timo Paulssen <t...@wakelift.de> wrote:
> >
> > I think you might have misread the bug report.
> >
> > This bug is about the .perl method on Pair not being careful enough
> > if
> > the .perl of its .key looks like /<ident>/.
> >
> > I am reluctant to add a full ~~ /<ident>/ to the .perl, as matching
> > carries quite a big overhead at the moment and that'd make printing a
> > list of pairs extra slow. Perhaps we could use "findnotcclass" to
> > look
> > for non-alpha in the .perl and just throw parenthesis around it if
> > anything looks vaguely suspicious.
> >
> > On 12/13/2015 11:13 AM, Elizabeth Mattijsen wrote:
> >>> On 13 Dec 2015, at 05:18, Zefram (via RT) <perl6-bugs-
> >>> follo...@perl.org> wrote:
> >>>
> >>> # New Ticket Created by  Zefram
> >>> # Please include the string:  [perl #126890]
> >>> # in the subject line of all future correspondence about this
> >>> issue.
> >>> # <URL: https://rt.perl.org/Ticket/Display.html?id=126890 >
> >>>
> >>>
> >>> $ perl6 -e '((Nil)=>1).key.WHAT.say;
> >>> ((Nil)=>1).perl.EVAL.key.WHAT.say'
> >>> Nil
> >>> (Str)
> >>>
> >>> The problem is that the .perl of that pair is "Nil => 1", which
> >>> parses
> >>> as a string key rather than the Nil object.  Parens or some other
> >>> circumlocution is required in order to preserve the meaning of
> >>> "Nil"
> >>> in this context.
> >> I think this is ENOTABUG.
> >>
> >> Perl 6 has the same auto-quoting rules for the left side of a fat
> >> comma as Perl 5.
> >>
> >> $ 6 'dd (Any => 42).key'
> >> Str $var = “Any"
> >>
> >> $ 6 'dd ((Any) => 42).key'
> >> Any $var = Any
> >>
> >> So, yes, you need to do something extra to keep the typedness of the
> >> left hand side.  Just as you would need to do in Perl 5.
> >>
> >>
> >> Another way of creating a Pair, is Pair.new:
> >>
> >> $ 6 'dd Pair.new(Any,42).key'
> >> Any $var = Any
> >>
> >>
> >> YMMV
> >>
> >>
> >>
> >> Liz
> >


Test added in roast commit 56ec03599, so resolving this ticket.

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