# New Ticket Created by "Carl Mäsak"
# Please include the string: [perl #122907]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/Ticket/Display.html?id=122907 >
<TuxCM> m: my@x=("1ab");for @x { s{^(\d+)} = sprintf "%3d:", $1; }; @x.say
<camelia> rakudo-moar 16232f: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<gtodd1> so you want to format the digit in the list?
<[TuxCM]> gtodd1, yes
<gtodd1> m: my @x=("1ab");for @x { s{^(\d+)} = sprintf "%3d :", "$1"; }; @x.say
<camelia> rakudo-moar ae11b5: OUTPUT« 0 :ab»
<gtodd> TuxCM: hmm so the ^(\d+) bit doesn't work ... with the RHS
the as expected?
<gtodd> m: my @x=("1ab");for @x { s{^(\d+)} = sprintf "%3d :", $1; }; @x.say
<camelia> rakudo-moar ae11b5: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<[TuxCM]> gtodd, why does the $1 have to be quoted???
<[TuxCM]> m: my @x=("1ab");for @x { s{^(\d+)} = sprintf "%3d :", "$1"; }; @x.say
<camelia> rakudo-moar 3af250: OUTPUT« 0 :ab»
<[TuxCM]> m: my @x=("1ab");for @x { s{^(\d+)} = sprintf "%3d :", $1; }; @x.say
<camelia> rakudo-moar 3af250: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<[TuxCM]> THAT is what I was wondering about
<masak> m: for my @x = "1ab" { s{^(\d+)} = sprintf "%3d :", Nil }
<camelia> rakudo-moar 3af250: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<masak> m: $_ = "1ab"; s{^(\d+)} = sprintf "%3d :", "$1"; .say
<camelia> rakudo-moar 3af250: OUTPUT«use of uninitialized value of
type Any in string context [...] 0 :ab»
<masak> m: $_ = "1ab"; s{^(\d+)} = sprintf "%3d :", $1; .say
<camelia> rakudo-moar 3af250: OUTPUT«No such method 'Int' for invocant
of type 'Any'»
<masak> oh!
<masak> $1 !
<masak> m: $_ = "1ab"; s{^(\d+)} = sprintf "%3d :", $0; .say
<camelia> rakudo-moar 3af250: OUTPUT« 1 :ab»
<masak> :)
<masak> I think the real bug is that sprintf reacts badly to a Nil.
<masak> m: sprintf "%d", Nil
<camelia> rakudo-moar 3af250: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<masak> that's LTA.
* masak submits that
<masak> m: sprintf "%s", Nil
<camelia> rakudo-moar 3af250: OUTPUT«Too many directives: found 1, but
no arguments after the format string»
<masak> oh...
<masak> right, so the problem isn't the Nil as such.
<masak> but rather that there's nothing to populate the %d with.
<masak> m: sprintf "%d"
<camelia> rakudo-moar 3af250: OUTPUT«No such method 'item' for
invocant of type 'NQPMu' [...]
<masak> should give the same error as
<masak> m: sprintf "%s"
<camelia> rakudo-moar 3af250: OUTPUT«Too many directives: found 1, but
no arguments after the format string»
