code review 5495055: go: implement test command

src/cmd/go/main.go

Index: src/cmd/go/main.go
===================================================================
--- a/src/cmd/go/main.go
+++ b/src/cmd/go/main.go
@@ -36,6 +36,10 @@
 
 	// Flag is a set of flags specific to this command.
 	Flag flag.FlagSet
+
+	// CustomFlags indicates that the command will do its own
+	// flag parsing.
+	CustomFlags bool
 }
 
 // Name returns the command's name: the first word in the usage line.
@@ -96,8 +100,12 @@
 	for _, cmd := range commands {
 		if cmd.Name() == args[0] && cmd.Run != nil {
 			cmd.Flag.Usage = func() { cmd.Usage() }
-			cmd.Flag.Parse(args[1:])
-			args = cmd.Flag.Args()
+			if cmd.CustomFlags {
+				args = args[1:]
+			} else {
+				cmd.Flag.Parse(args[1:])
+				args = cmd.Flag.Args()
+			}
 			cmd.Run(cmd, args)
 			exit()
 			return
@@ -209,6 +217,8 @@
 	exitStatus = 1
 }
 
+var logf = log.Printf
+
 func exitIfErrors() {
 	if exitStatus != 0 {
 		exit()