3 files changed, 10 insertions, 33 deletions
diff --git a/vendor/github.com/mattn/go-shellwords/util_go15.go b/vendor/github.com/mattn/go-shellwords/util_go15.go
deleted file mode 100644
index ddcbf229e..000000000
--- a/vendor/github.com/mattn/go-shellwords/util_go15.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// +build !go1.6
-
-package shellwords
-
-import (
-	"os"
-	"os/exec"
-	"runtime"
-	"strings"
-)
-
-func shellRun(line, dir string) (string, error) {
-	var b []byte
-	var err error
-	var cmd *exec.Cmd
-	if runtime.GOOS == "windows" {
-		cmd = exec.Command(os.Getenv("COMSPEC"), "/c", line)
-	} else {
-		cmd = exec.Command(os.Getenv("SHELL"), "-c", line)
-	}
-	if dir != "" {
-		cmd.Dir = dir
-	}
-	b, err = cmd.Output()
-	if err != nil {
-		return "", err
-	}
-	return strings.TrimSpace(string(b)), nil
-}
diff --git a/vendor/github.com/mattn/go-shellwords/util_posix.go b/vendor/github.com/mattn/go-shellwords/util_posix.go
index 3aef2c4d7..988fc9ed2 100644
--- a/vendor/github.com/mattn/go-shellwords/util_posix.go
+++ b/vendor/github.com/mattn/go-shellwords/util_posix.go
@@ -1,4 +1,4 @@
-// +build !windows,go1.6
+// +build !windows
 
 package shellwords
 
@@ -10,7 +10,10 @@ import (
 )
 
 func shellRun(line, dir string) (string, error) {
-	shell := os.Getenv("SHELL")
+	var shell string
+	if shell = os.Getenv("SHELL"); shell == "" {
+		shell = "/bin/sh"
+	}
 	cmd := exec.Command(shell, "-c", line)
 	if dir != "" {
 		cmd.Dir = dir
diff --git a/vendor/github.com/mattn/go-shellwords/util_windows.go b/vendor/github.com/mattn/go-shellwords/util_windows.go
index cda685091..20546737c 100644
--- a/vendor/github.com/mattn/go-shellwords/util_windows.go
+++ b/vendor/github.com/mattn/go-shellwords/util_windows.go
@@ -1,4 +1,4 @@
-// +build windows,go1.6
+// +build windows
 
 package shellwords
 
@@ -10,7 +10,10 @@ import (
 )
 
 func shellRun(line, dir string) (string, error) {
-	shell := os.Getenv("COMSPEC")
+	var shell string
+	if shell = os.Getenv("COMSPEC"); shell == "" {
+		shell = "cmd"
+	}
 	cmd := exec.Command(shell, "/c", line)
 	if dir != "" {
 		cmd.Dir = dir