// Test invalid function calls.

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// Error: 1-2 unexpected invalid token
#

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#let x = "string"

// Error: 1-3 expected function, found string
#x()

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// Error: 3:1 expected closing bracket
#f[`a]`

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// Error: 4 expected closing paren
{f(}

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// Error: 3:1 expected quote
// Error: 2:1 expected closing paren
#f("]