From @moritz

09​:33 < tylercurtis> rakudo​: say [\+] [\+] 1 xx 5
09​:33 < p6eval> rakudo ea8f2b​: ( no output )

doesn't work :(

09​:33 < tylercurtis> pugs​: say [\+] [\+] 1 xx 5
09​:33 < p6eval> pugs​: OUTPUT«1361015␤»

Yep, pugs gets it right

09​:35 <@​moritz_> rakudo​: say ([\+] 1 xx 5).perl
09​:35 < p6eval> rakudo ea8f2b​: OUTPUT«(1, 2, 3, 4, 5)␤»

first one still works...

09​:35 <@​moritz_> rakudo​: say ([\+] ([\+] 1 xx 5)).perl
09​:35 < p6eval> rakudo ea8f2b​: OUTPUT«()␤»

Nesting doesn't. Doesn't seem to be a precedence problem.

09​:36 < tylercurtis> rakudo​: say ([\+] [[\+] 1 xx 5])
09​:36 < p6eval> rakudo ea8f2b​: OUTPUT«1361015␤»

Aha. over-eager argument flattening somewhere?

--
Moritz Lenz
http://perlgeek.de/ | http://perl-6.de/ | http://sudokugarden.de/

From @masak

<masak> rakudo​: say [+] [1,2,3] # bug courtesy of TimToady++
<p6eval> rakudo 04a918​: OUTPUT«6␤»
* masak submits rakudobug
<masak> <TimToady> [] should never flatten in a listop
<moritz_> masak​: the [+] [1, 2, 3] bug might be related to
http://rt.perl.org/rt3/Ticket/Display.html?id=76110
* masak looks
<masak> the final question seems to indicate it is.
<masak> but I don't immediately see the connection.
<moritz_> the connection is that [...] around the inner expression make it work
<masak> right.
<masak> I'll put this issue in that ticket, then.

From [Unknown Contact. See original ticket]

<masak> rakudo​: say [+] [1,2,3] # bug courtesy of TimToady++
<p6eval> rakudo 04a918​: OUTPUT«6␤»
* masak submits rakudobug
<masak> <TimToady> [] should never flatten in a listop
<moritz_> masak​: the [+] [1, 2, 3] bug might be related to
http://rt.perl.org/rt3/Ticket/Display.html?id=76110
* masak looks
<masak> the final question seems to indicate it is.
<masak> but I don't immediately see the connection.
<moritz_> the connection is that [...] around the inner expression make it work
<masak> right.
<masak> I'll put this issue in that ticket, then.

@masak - Status changed from 'new' to 'open'

From @coke

On Sat Jun 26 00​:44​:28 2010, mlenz@​physik.uni-wuerzburg.de wrote​:

09​:33 < tylercurtis> rakudo​: say [\+] [\+] 1 xx 5
09​:33 < p6eval> rakudo ea8f2b​: ( no output )

doesn't work :(

09​:33 < tylercurtis> pugs​: say [\+] [\+] 1 xx 5
09​:33 < p6eval> pugs​: OUTPUT«1361015␤»

Yep, pugs gets it right

And rakudo does too, now​:

say [\+] [\+] 1 xx 5
1361015

09​:35 <@​moritz_> rakudo​: say ([\+] 1 xx 5).perl
09​:35 < p6eval> rakudo ea8f2b​: OUTPUT«(1, 2, 3, 4, 5)␤»

first one still works...

09​:35 <@​moritz_> rakudo​: say ([\+] ([\+] 1 xx 5)).perl
09​:35 < p6eval> rakudo ea8f2b​: OUTPUT«()␤»

Nesting doesn't. Doesn't seem to be a precedence problem.

say ([\+] ([\+] 1 xx 5)).perl
(1, 3, 6, 10, 15)

09​:36 < tylercurtis> rakudo​: say ([\+] [[\+] 1 xx 5])
09​:36 < p6eval> rakudo ea8f2b​: OUTPUT«1361015␤»

Aha. over-eager argument flattening somewhere?

These all work now. Just need tests.

--
Will "Coke" Coleda

From @coke

On Tue Jul 06 04​:44​:22 2010, masak wrote​:

<masak> rakudo​: say [+] [1,2,3] # bug courtesy of TimToady++
<p6eval> rakudo 04a918​: OUTPUT«6␤»
* masak submits rakudobug
<masak> <TimToady> [] should never flatten in a listop

Answer's changed. (Is it right? Dunno).

say [+] [1,2,3]
3

--
Will "Coke" Coleda

From @coke

On Mon, Jan 31, 2011 at 2​:10 AM, Will Coleda via RT
<perl6-bugs-followup@​perl.org> wrote​:

On Tue Jul 06 04​:44​:22 2010, masak wrote​:

<masak> rakudo​: say [+] [1,2,3] # bug courtesy of TimToady++
<p6eval> rakudo 04a918​: OUTPUT«6␤»
* masak submits rakudobug
<masak> <TimToady> [] should never flatten in a listop

Answer's changed. (Is it right? Dunno).

09​:36 < pmichaud> [Coke]​: Rakudo is correct
09​:36 < moritz_> [Coke]​: 3 is correct I think

say [+] [1,2,3]
3

So, just needs tests.

--
Will "Coke" Coleda

From @moritz

Tested in S03-metaops/reduce.t.

moritz

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