// Other kinds of assignments and operators aren't available yet.
	{"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"},
	{"bug0b", "{{$x += 1}}{{$x}}", hasError, ""},
	{"bug0c", "{{$x ! 2}}{{$x}}", hasError, ""},
	{"bug0d", "{{$x % 3}}{{$x}}", hasError, ""},
	// Check the parse fails for := rather than comma.
	{"bug0e", "{{range $x := $y := 3}}{{end}}", hasError, ""},