# Test that unicode character, √, in an expression is recognized

---input---
s = √((1/n) * sum(count .^ 2) - mu .^2)

---tokens---
's'           Name
' '           Text.Whitespace
'='           Operator
' '           Text.Whitespace
'√'           Operator
'('           Punctuation
'('           Punctuation
'1'           Literal.Number.Integer
'/'           Operator
'n'           Name
')'           Punctuation
' '           Text.Whitespace
'*'           Operator
' '           Text.Whitespace
'sum'         Name
'('           Punctuation
'count'       Name
' '           Text.Whitespace
'.^'          Operator
' '           Text.Whitespace
'2'           Literal.Number.Integer
')'           Punctuation
' '           Text.Whitespace
'-'           Operator
' '           Text.Whitespace
'mu'          Name
' '           Text.Whitespace
'.^'          Operator
'2'           Literal.Number.Integer
')'           Punctuation
'\n'          Text.Whitespace