Why does the context (array constructor) make a difference with
respect to disambiguation?
I don’t think the context per se plays the role, but instead of
what the parser is trying to do.
You can compare this if you create a new array without :
Array.new(f 5) # => [nil, nil, nil, nil, nil]
This will work, so there is something inherently different for the use
I can’t off the top of my head name why  is parsed differently but I
think there exists a reason why it is not possible, as otherwise it
would have been allowed by the lexer/parser or however it is called.
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