Function builtin_urlencode 

fn builtin_urlencode(
    args: &[RValue],
    named: &[(String, RValue)],
) -> Result<RValue, RError>

Percent-encode URL strings per RFC 3986.

Vectorized over URL.

@param URL character vector of strings to encode @param reserved if TRUE (default), also encode reserved characters @return character vector of percent-encoded strings