end := fset.Position(old.End())
			// Subtract 1 from the column if we are going to
			// append a close parenthesis. That will set the
			// correct column for the following characters.
			sub := 0
			if r.Name.Kind != "type" {
				sub = 1
			}
			if end.Column > sub {
				repl = fmt.Sprintf("%s /*line :%d:%d*/", repl, end.Line, end.Column-sub)
			}
			if r.Name.Kind != "type" {

	}
	var args []string
	// The C preprocessor treats
	//	#define A(x)
	// and
	//	#define A (x)
	// distinctly: the first is a macro with arguments, the second without.
	// Distinguish these cases using the column number, since we don't
	// see the space itself. Note that text/scanner reports the position at the
	// end of the token. It's where you are now, and you just read this token.
	if tok == '(' && in.Stack.Col() == prevCol+1 {

	// Base reports the position base of the token.
	Base() *src.PosBase
	// SetBase sets the position base.
	SetBase(*src.PosBase)
	// Line reports the source line number of the token.
	Line() int
	// Col reports the source column number of the token.
	Col() int
	// Close does any teardown required.
	Close()
}

// A Token is a scan token plus its string value.
// A macro is stored as a sequence of Tokens with spaces stripped.