Update vendors

vendor/github.com/cosiner/argv/argv.go

@@ -0,0 +1,34 @@
+// Package argv parse command line string into arguments array using the bash syntax.
+package argv
+
+import "strings"
+
+// ParseEnv parsing environment variables as key/value pair.
+//
+// Item will be ignored if one of the key and value is empty.
+func ParseEnv(env []string) map[string]string {
+	var m map[string]string
+	for _, e := range env {
+		secs := strings.SplitN(e, "=", 2)
+		if len(secs) == 2 {
+			key := strings.TrimSpace(secs[0])
+			val := strings.TrimSpace(secs[1])
+			if key == "" || val == "" {
+				continue
+			}
+			if m == nil {
+				m = make(map[string]string)
+			}
+			m[key] = val
+		}
+	}
+	return m
+}
+
+// Argv split cmdline string as array of argument array by the '|' character.
+//
+// The parsing rules is same as bash. The environment variable will be replaced
+// and string surround by '`' will be passed to reverse quote parser.
+func Argv(cmdline []rune, env map[string]string, reverseQuoteParser ReverseQuoteParser) ([][]string, error) {
+	return NewParser(NewScanner(cmdline, env), reverseQuoteParser).Parse()
+}