Using curly braces for the function body leads to an error

[stla]

Hello,

I'm using R-4.2.2 with Linux Mint. When I enclose the body of a function with curly braces {}, I can't apply the dfdr functions to this function; I get the error "function { is not supported". That sounds strange because there are such examples in the documentation.

[Konrad1991]

Hi, the curly braces are not supported for the function d But only for the jacobianfunction