switched to fast interpreter by default. to use classic interpreter, …

…type :classic at REPL

example/arith.gomacro

@@ -1,7 +1,5 @@
 #!/usr/bin/env gomacro
 
-:fast
-
 func BenchmarkArith(n int) int {
 	total := 0
 	for i := 0; i < n; i++ {

example/collatz.gomacro

@@ -1,7 +1,5 @@
 #!/usr/bin/env gomacro
 
-:fast
-
 func collatz(n int) {
 	for n > 1 {
 		if n&1 != 0 {

example/embedded_field.gomacro

@@ -1,8 +1,8 @@
 #!/usr/bin/env gomacro
 
-:fast
-
 type Pair struct{ a, b int }
 type Triple struct {Pair; c int}
 
 var t Triple
+
+println(t)

example/fibonacci.gomacro

@@ -1,7 +1,5 @@
 #!/usr/bin/env gomacro
 
-:fast
-
 func fibonacci(n uint) uint {
 	if n <= 2 {
 		return 1

fast/func1ret1.go

@@ -8301,13 +8301,3 @@ func (c *Comp) func1ret1(t xr.Type, m *funcMaker) func(*Env) r.Value {
 	}
 	return nil
 }
-func (c *Comp) func_ret1(t xr.Type, m *funcMaker) func(*Env) r.Value {
-	switch t.ReflectType().NumIn() {
-	case 0:
-		return c.func0ret1(t, m)
-	case 1:
-		return c.func1ret1(t, m)
-	default:
-		return nil
-	}
-}

main.go

@@ -39,8 +39,11 @@ func main() {
 	var cmd Cmd
 	cmd.Init()
 
+	cmd.Options |= base.OptFastInterpreter // use fast interpreter by default
+
+	// cmd.Options |= base.OptShowTime // | base.OptTrapPanic // | base.OptShowAfterMacroExpansion // | base.OptShowAfterParse // | base.OptDebugMacroExpand // |  base.OptDebugQuasiquote
+
 	cmd.ParserMode |= parser.Trace & 0
-	cmd.Options |= base.OptShowTime & 0 // base.OptTrapPanic // | base.OptShowAfterMacroExpansion // | base.OptShowAfterParse // | base.OptDebugMacroExpand // |  base.OptDebugQuasiquote
 
 	err := cmd.Main(args)
 	if err != nil {