[git] Fix forwarding empty arguments

Fixes #2552

Ref. d99f308e2d

commands/args.go

@@ -92,9 +92,7 @@ func (a *Args) ToCmd() *cmd.Cmd {
 	}
 
 	for _, arg := range a.Params {
-		if arg != "" {
-			c.WithArg(arg)
-		}
+		c.WithArg(arg)
 	}
 
 	return c

commands/args_test.go

@@ -120,6 +120,12 @@ func TestArgs_GlobalFlags_Replaced(t *testing.T) {
 	assert.Equal(t, []string{"-a", "http://example.com"}, cmd.Args)
 }
 
+func TestArgs_ToCmd(t *testing.T) {
+	args := NewArgs([]string{"a", "", "b", ""})
+	cmd := args.ToCmd()
+	assert.Equal(t, []string{"a", "", "b", ""}, cmd.Args)
+}
+
 func TestArgs_GlobalFlags_BeforeAfterChain(t *testing.T) {
 	args := NewArgs([]string{"-c", "key=value", "-C", "dir", "status"})
 	args.Before("git", "remote", "add")