diff --git a/vendor/github.com/posener/complete/args.go b/vendor/github.com/posener/complete/args.go
index 73c356d76c25..1ba4d69198f4 100644
--- a/vendor/github.com/posener/complete/args.go
+++ b/vendor/github.com/posener/complete/args.go
@@ -3,6 +3,8 @@ package complete
 import (
 	"os"
 	"path/filepath"
+	"strings"
+	"unicode"
 )
 
 // Args describes command line arguments
@@ -37,16 +39,41 @@ func (a Args) Directory() string {
 	return fixPathForm(a.Last, dir)
 }
 
-func newArgs(line []string) Args {
-	completed := removeLast(line[1:])
+func newArgs(line string) Args {
+	var (
+		all       []string
+		completed []string
+	)
+	parts := splitFields(line)
+	if len(parts) > 0 {
+		all = parts[1:]
+		completed = removeLast(parts[1:])
+	}
 	return Args{
-		All:           line[1:],
+		All:           all,
 		Completed:     completed,
-		Last:          last(line),
+		Last:          last(parts),
 		LastCompleted: last(completed),
 	}
 }
 
+func splitFields(line string) []string {
+	parts := strings.Fields(line)
+	if len(line) > 0 && unicode.IsSpace(rune(line[len(line)-1])) {
+		parts = append(parts, "")
+	}
+	parts = splitLastEqual(parts)
+	return parts
+}
+
+func splitLastEqual(line []string) []string {
+	if len(line) == 0 {
+		return line
+	}
+	parts := strings.Split(line[len(line)-1], "=")
+	return append(line[:len(line)-1], parts...)
+}
+
 func (a Args) from(i int) Args {
 	if i > len(a.All) {
 		i = len(a.All)
@@ -67,9 +94,9 @@ func removeLast(a []string) []string {
 	return a
 }
 
-func last(args []string) (last string) {
-	if len(args) > 0 {
-		last = args[len(args)-1]
+func last(args []string) string {
+	if len(args) == 0 {
+		return ""
 	}
-	return
+	return args[len(args)-1]
 }
diff --git a/vendor/github.com/posener/complete/command.go b/vendor/github.com/posener/complete/command.go
index 6de48e960d06..82d37d529b1f 100644
--- a/vendor/github.com/posener/complete/command.go
+++ b/vendor/github.com/posener/complete/command.go
@@ -1,7 +1,5 @@
 package complete
 
-import "github.com/posener/complete/match"
-
 // Command represents a command line
 // It holds the data that enables auto completion of command line
 // Command can also be a sub command.
@@ -25,9 +23,9 @@ type Command struct {
 }
 
 // Predict returns all possible predictions for args according to the command struct
-func (c *Command) Predict(a Args) (predictions []string) {
-	predictions, _ = c.predict(a)
-	return
+func (c *Command) Predict(a Args) []string {
+	options, _ := c.predict(a)
+	return options
 }
 
 // Commands is the type of Sub member, it maps a command name to a command struct
@@ -36,9 +34,7 @@ type Commands map[string]Command
 // Predict completion of sub command names names according to command line arguments
 func (c Commands) Predict(a Args) (prediction []string) {
 	for sub := range c {
-		if match.Prefix(sub, a.Last) {
-			prediction = append(prediction, sub)
-		}
+		prediction = append(prediction, sub)
 	}
 	return
 }
@@ -56,10 +52,7 @@ func (f Flags) Predict(a Args) (prediction []string) {
 		if flagHyphenStart && !lastHyphenStart {
 			continue
 		}
-
-		if match.Prefix(flag, a.Last) {
-			prediction = append(prediction, flag)
-		}
+		prediction = append(prediction, flag)
 	}
 	return
 }
diff --git a/vendor/github.com/posener/complete/complete.go b/vendor/github.com/posener/complete/complete.go
index 1df66170bdac..185d1e8bd2ec 100644
--- a/vendor/github.com/posener/complete/complete.go
+++ b/vendor/github.com/posener/complete/complete.go
@@ -8,10 +8,11 @@ package complete
 import (
 	"flag"
 	"fmt"
+	"io"
 	"os"
-	"strings"
 
 	"github.com/posener/complete/cmd"
+	"github.com/posener/complete/match"
 )
 
 const (
@@ -23,6 +24,7 @@ const (
 type Complete struct {
 	Command Command
 	cmd.CLI
+	Out io.Writer
 }
 
 // New creates a new complete command.
@@ -34,6 +36,7 @@ func New(name string, command Command) *Complete {
 	return &Complete{
 		Command: command,
 		CLI:     cmd.CLI{Name: name},
+		Out:     os.Stdout,
 	}
 }
 
@@ -59,28 +62,34 @@ func (c *Complete) Complete() bool {
 		return c.CLI.Run()
 	}
 	Log("Completing line: %s", line)
-
 	a := newArgs(line)
-
+	Log("Completing last field: %s", a.Last)
 	options := c.Command.Predict(a)
+	Log("Options: %s", options)
 
-	Log("Completion: %s", options)
-	output(options)
+	// filter only options that match the last argument
+	matches := []string{}
+	for _, option := range options {
+		if match.Prefix(option, a.Last) {
+			matches = append(matches, option)
+		}
+	}
+	Log("Matches: %s", matches)
+	c.output(matches)
 	return true
 }
 
-func getLine() ([]string, bool) {
+func getLine() (string, bool) {
 	line := os.Getenv(envComplete)
 	if line == "" {
-		return nil, false
+		return "", false
 	}
-	return strings.Split(line, " "), true
+	return line, true
 }
 
-func output(options []string) {
-	Log("")
+func (c *Complete) output(options []string) {
 	// stdout of program defines the complete options
 	for _, option := range options {
-		fmt.Println(option)
+		fmt.Fprintln(c.Out, option)
 	}
 }
diff --git a/vendor/github.com/posener/complete/predict_set.go b/vendor/github.com/posener/complete/predict_set.go
index 8fc59d714786..fa4a34ae46b5 100644
--- a/vendor/github.com/posener/complete/predict_set.go
+++ b/vendor/github.com/posener/complete/predict_set.go
@@ -1,7 +1,5 @@
 package complete
 
-import "github.com/posener/complete/match"
-
 // PredictSet expects specific set of terms, given in the options argument.
 func PredictSet(options ...string) Predictor {
 	return predictSet(options)
@@ -9,11 +7,6 @@ func PredictSet(options ...string) Predictor {
 
 type predictSet []string
 
-func (p predictSet) Predict(a Args) (prediction []string) {
-	for _, m := range p {
-		if match.Prefix(m, a.Last) {
-			prediction = append(prediction, m)
-		}
-	}
-	return
+func (p predictSet) Predict(a Args) []string {
+	return p
 }
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 7392d78b1f29..438275091101 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -76,10 +76,7 @@
 		{"path":"github.com/mitchellh/reflectwalk","checksumSHA1":"mrqMlK6gqe//WsJSrJ1HgkPM0lM=","revision":"eecf4c70c626c7cfbb95c90195bc34d386c74ac6","revisionTime":"2015-05-27T15:31:53Z"},
 		{"path":"github.com/pascaldekloe/goe/verify","checksumSHA1":"5h+ERzHw3Rl2G0kFPxoJzxiA9s0=","revision":"07ebd1e2481f616a278ab431cf04cc5cf5ab3ebe","revisionTime":"2017-03-28T18:37:59Z"},
 		{"path":"github.com/pkg/errors","checksumSHA1":"ynJSWoF6v+3zMnh9R0QmmG6iGV8=","revision":"ff09b135c25aae272398c51a07235b90a75aa4f0","revisionTime":"2017-03-16T20:15:38Z","tree":true},
-		{"path":"github.com/posener/complete","checksumSHA1":"rTNABfFJ9wtLQRH8uYNkEZGQOrY=","revision":"9f41f7636a724791a3b8b1d35e84caa1124f0d3c","revisionTime":"2017-08-29T17:11:12Z"},
-		{"path":"github.com/posener/complete/cmd","checksumSHA1":"NB7uVS0/BJDmNu68vPAlbrq4TME=","revision":"9f41f7636a724791a3b8b1d35e84caa1124f0d3c","revisionTime":"2017-08-29T17:11:12Z"},
-		{"path":"github.com/posener/complete/cmd/install","checksumSHA1":"gSX86Xl0w9hvtntdT8h23DZtSag=","revision":"9f41f7636a724791a3b8b1d35e84caa1124f0d3c","revisionTime":"2017-08-29T17:11:12Z"},
-		{"path":"github.com/posener/complete/match","checksumSHA1":"DMo94FwJAm9ZCYCiYdJU2+bh4no=","revision":"9f41f7636a724791a3b8b1d35e84caa1124f0d3c","revisionTime":"2017-08-29T17:11:12Z"},
+		{"path":"github.com/posener/complete","checksumSHA1":"Nt4Ol6ZM2n0XD5zatxjwEYBpQnw=","revision":"dc2bc5a81accba8782bebea28628224643a8286a","revisionTime":"2017-11-04T09:57:02Z","version":"=v1.1","versionExact":"v1.1"},
 		{"path":"github.com/ryanuber/columnize","checksumSHA1":"ExnVEVNT8APpFTm26cUb5T09yR4=","comment":"v2.0.1-8-g983d3a5","revision":"9b3edd62028f107d7cabb19353292afd29311a4e","revisionTime":"2016-07-12T16:32:29Z"},
 		{"path":"github.com/sean-/seed","checksumSHA1":"A/YUMbGg1LHIeK2+NLZBt+MIAao=","revision":"3c72d44db0c567f7c901f9c5da5fe68392227750","revisionTime":"2017-02-08T16:47:21Z"},
 		{"path":"github.com/sergi/go-diff/diffmatchpatch","checksumSHA1":"v7C+aJ1D/z3MEeCte6bxvpoGjM4=","revision":"feef008d51ad2b3778f85d387ccf91735543008d","revisionTime":"2017-04-09T07:17:39Z"},