3 files changed, 32 insertions, 15 deletions
diff --git a/cmd/utils/customflags.go b/cmd/utils/customflags.go
index e7efed4e3..4450065c1 100644
--- a/cmd/utils/customflags.go
+++ b/cmd/utils/customflags.go
@@ -21,7 +21,7 @@ import (
 	"fmt"
 	"os"
 	"os/user"
-	"path/filepath"
+	"path"
 	"strings"
 
 	"github.com/codegangsta/cli"
@@ -138,11 +138,8 @@ func (self *DirectoryFlag) Set(value string) {
 func expandPath(p string) string {
 	if strings.HasPrefix(p, "~/") || strings.HasPrefix(p, "~\\") {
 		if user, err := user.Current(); err == nil {
-			if err == nil {
-				p = strings.Replace(p, "~", user.HomeDir, 1)
-			}
+			p = user.HomeDir + p[1:]
 		}
 	}
-
-	return filepath.Clean(os.ExpandEnv(p))
+	return path.Clean(os.ExpandEnv(p))
 }
diff --git a/cmd/utils/customflags_test.go b/cmd/utils/customflags_test.go
index 0fb0af63b..de39ca36a 100644
--- a/cmd/utils/customflags_test.go
+++ b/cmd/utils/customflags_test.go
@@ -23,18 +23,15 @@ import (
 )
 
 func TestPathExpansion(t *testing.T) {
-
 	user, _ := user.Current()
-
 	tests := map[string]string{
 		"/home/someuser/tmp": "/home/someuser/tmp",
 		"~/tmp":              user.HomeDir + "/tmp",
+		"~thisOtherUser/b/":  "~thisOtherUser/b",
 		"$DDDXXX/a/b":        "/tmp/a/b",
 		"/a/b/":              "/a/b",
 	}
-
 	os.Setenv("DDDXXX", "/tmp")
-
 	for test, expected := range tests {
 		got := expandPath(test)
 		if got != expected {
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 815d48124..e7b30cfa0 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -27,6 +27,7 @@ import (
 	"runtime"
 	"strconv"
 
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/metrics"
 
 	"github.com/codegangsta/cli"
@@ -172,6 +173,25 @@ var (
 		Value: "",
 	}
 
+	// vm flags
+	VMDebugFlag = cli.BoolFlag{
+		Name:  "vmdebug",
+		Usage: "Virtual Machine debug output",
+	}
+	VMForceJitFlag = cli.BoolFlag{
+		Name:  "forcejit",
+		Usage: "Force the JIT VM to take precedence",
+	}
+	VMJitCacheFlag = cli.IntFlag{
+		Name:  "jitcache",
+		Usage: "Amount of cached JIT VM programs",
+		Value: 64,
+	}
+	VMEnableJitFlag = cli.BoolFlag{
+		Name:  "jitvm",
+		Usage: "Enable the JIT VM",
+	}
+
 	// logging and debug settings
 	LogFileFlag = cli.StringFlag{
 		Name:  "logfile",
@@ -196,10 +216,6 @@ var (
 		Usage: "The syntax of the argument is a comma-separated list of pattern=N, where pattern is a literal file name (minus the \".go\" suffix) or \"glob\" pattern and N is a log verbosity level.",
 		Value: glog.GetVModule(),
 	}
-	VMDebugFlag = cli.BoolFlag{
-		Name:  "vmdebug",
-		Usage: "Virtual Machine debug output",
-	}
 	BacktraceAtFlag = cli.GenericFlag{
 		Name:  "backtrace_at",
 		Usage: "If set to a file and line number (e.g., \"block.go:271\") holding a logging statement, a stack trace will be logged",
@@ -434,6 +450,13 @@ func SetupLogger(ctx *cli.Context) {
 	glog.SetLogDir(ctx.GlobalString(LogFileFlag.Name))
 }
 
+// SetupVM configured the VM package's global settings
+func SetupVM(ctx *cli.Context) {
+	vm.DisableJit = !ctx.GlobalBool(VMEnableJitFlag.Name)
+	vm.ForceJit = ctx.GlobalBool(VMForceJitFlag.Name)
+	vm.SetJITCacheSize(ctx.GlobalInt(VMJitCacheFlag.Name))
+}
+
 // MakeChain creates a chain manager from set command line flags.
 func MakeChain(ctx *cli.Context) (chain *core.ChainManager, blockDB, stateDB, extraDB common.Database) {
 	datadir := ctx.GlobalString(DataDirFlag.Name)
@@ -478,7 +501,7 @@ func MakeAccountManager(ctx *cli.Context) *accounts.Manager {
 }
 
 func IpcSocketPath(ctx *cli.Context) (ipcpath string) {
-	if common.IsWindows() {
+	if runtime.GOOS == "windows" {
 		ipcpath = common.DefaultIpcPath()
 		if ctx.GlobalIsSet(IPCPathFlag.Name) {
 			ipcpath = ctx.GlobalString(IPCPathFlag.Name)