Issue #2050 has been updated by Nobuyoshi Nakada.

Status changed from Closed to Open

$ ./ruby -v -
ruby 1.9.2dev (2009-09-18 trunk 24985) [i386-darwin9.8.0]
a=Hash.new{[]}
b=2,3
p a[:x]<<=[*b,1]
-:3:in `[]': wrong number of arguments(2 for 1) (ArgumentError)
	from -:3:in `<main>'

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http://redmine.ruby-lang.org/issues/show/2050

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