From @masak

<timotimo> r​: sub postfix​:{}($a) { say "$a bracey brace" }; 42{}
<p6eval> rakudo befe7c​: OUTPUT«(timeout)»
<timotimo> whoops?
<moritz> r​: sub postfix​:<{}>($a) { say "$a bracey brace" }; 42{}
<p6eval> rakudo befe7c​: OUTPUT«42 bracey brace␤»
<timotimo> interesting. how did i trigger a loop there?
<moritz> timotimo​: it created a zero-width match, which was then
quantified in the grammar
<timotimo> aaaah
<moritz> timotimo​: so it matched the empty postfix all over again
<timotimo> of course.
<moritz> wouldn't that be a cute way to write a debugger?
<moritz> write an empty-string postfix
<moritz> that automatigacally gets inserted everywhere :-)
<timotimo> heh heh
* masak submits rakudobug
<masak> shouldn't be allowed to write empty postfixes, methinks

From @Mouq

Behavior change​:
21​:06 <Mouq> r​: sub postfix​:{}($a) { say "$a bracey brace" }; 42{}
21​:07 <camelia> rakudo 50cecf​: OUTPUT«===SORRY!===␤No such method 'ast'
for invocant of type 'NQPMu'␤»

On Thu Aug 23 10​:05​:14 2012, masak wrote​:

<timotimo> r​: sub postfix​:{}($a) { say "$a bracey brace" }; 42{}
<p6eval> rakudo befe7c​: OUTPUT«(timeout)»
<timotimo> whoops?
<moritz> r​: sub postfix​:<{}>($a) { say "$a bracey brace" }; 42{}
<p6eval> rakudo befe7c​: OUTPUT«42 bracey brace␤»
<timotimo> interesting. how did i trigger a loop there?
<moritz> timotimo​: it created a zero-width match, which was then
quantified in the grammar
<timotimo> aaaah
<moritz> timotimo​: so it matched the empty postfix all over again
<timotimo> of course.
<moritz> wouldn't that be a cute way to write a debugger?
<moritz> write an empty-string postfix
<moritz> that automatigacally gets inserted everywhere :-)
<timotimo> heh heh
* masak submits rakudobug
<masak> shouldn't be allowed to write empty postfixes, methinks

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

From @diakopter

new behavior​:

13​:30 <diakopter> m​: sub postfix​:{}($a) { say "$a bracey brace" }; 42{}
13​:30 <camelia> rakudo-moar 61d231​: OUTPUT«===SORRY!===␤Internal error​: find_var_decl could not find $_␤»

From @zoffixznet

On Thu, 07 Apr 2016 10​:31​:20 -0700, diakopter wrote​:

new behavior​:

13​:30 <diakopter> m​: sub postfix​:{}($a) { say "$a bracey brace" };
42{}
13​:30 <camelia> rakudo-moar 61d231​: OUTPUT«===SORRY!===␤Internal
error​: find_var_decl could not find $_␤»

Couple more glitches in the same area​:

14​:59 Zoffix m​: my $z​:{​:42foo}
14​:59 camelia rakudo-moar 26522e8ac​: OUTPUT​: «5===SORRY!5=== Error while compiling <tmp>␤You can't adverb $z␤at <tmp>​:1␤------> 3my $z​:{​:42foo}7⏏5<EOL>␤»
14​:59 Zoffix m​: my \z​:{​:42foo}
14​:59 camelia rakudo-moar 26522e8ac​: OUTPUT​: «===SORRY!===␤Cannot find method 'ast' on object of type NQPMu␤»