From sirrobert@gmail.com

16​:03 < sirrobert> r​: role B { method Str () { return 'bar'; }; }; print
({a=>1} but B);
16​:03 <+p6eval> rakudo d70363​: OUTPUT«a 1»
16​:03 < sirrobert> that *should* output 'bar', right?
16​:03 < sorear> n​: role B { method Str () { return 'bar'; }; }; print
({a=>1} but B);
16​:03 <+p6eval> niecza v21-1-ga8aa70b​: OUTPUT«bar»
16​:04 < sorear> I say it should output bar, yes
16​:04 < sorear> note that you can shorten tis to
16​:04 < sorear> n​: print ({a=>1} but 'bar')
16​:04 <+p6eval> niecza v21-1-ga8aa70b​: OUTPUT«bar»
16​:04 < moritz> r​: print ({a => 1 } but 'bar')
16​:04 <+p6eval> rakudo d70363​: OUTPUT«a 1»
16​:08 < moritz> r​: say ({ a => 1 } but 'foo') ~~ Str
16​:08 <+p6eval> rakudo d70363​: OUTPUT«False␤»
16​:08 < moritz> if that were true, I'd understand how something funky could
have happened
16​:10 < sirrobert> moritz​: want me to file that, or do you have it?
16​:11 < moritz> sirrobert​: please do
16​:11 < sirrobert> ok

From @jnthn

On Wed Aug 29 13​:15​:25 2012, sirrobert@​gmail.com wrote​:

16​:03 < sirrobert> r​: role B { method Str () { return 'bar'; }; }; print
({a=>1} but B);
16​:03 <+p6eval> rakudo d70363​: OUTPUT«a 1»
16​:03 < sirrobert> that *should* output 'bar', right?
16​:03 < sorear> n​: role B { method Str () { return 'bar'; }; }; print
({a=>1} but B);
16​:03 <+p6eval> niecza v21-1-ga8aa70b​: OUTPUT«bar»
16​:04 < sorear> I say it should output bar, yes
16​:04 < sorear> note that you can shorten tis to
16​:04 < sorear> n​: print ({a=>1} but 'bar')
16​:04 <+p6eval> niecza v21-1-ga8aa70b​: OUTPUT«bar»
16​:04 < moritz> r​: print ({a => 1 } but 'bar')
16​:04 <+p6eval> rakudo d70363​: OUTPUT«a 1»
16​:08 < moritz> r​: say ({ a => 1 } but 'foo') ~~ Str
16​:08 <+p6eval> rakudo d70363​: OUTPUT«False␤»
16​:08 < moritz> if that were true, I'd understand how something funky could
have happened
16​:10 < sirrobert> moritz​: want me to file that, or do you have it?
16​:11 < moritz> sirrobert​: please do
16​:11 < sirrobert> ok

Seems this was fixed a while ago, probably during the last round of parametrics work. Added tests to cover it in S14-roles/mixin.t.

The RT System itself - Status changed from 'new' to 'open'

@jnthn - Status changed from 'open' to 'resolved'