diff --git a/go.mod b/go.mod
index 3b0505c35..f53cc3fa8 100644
--- a/go.mod
+++ b/go.mod
@@ -99,7 +99,7 @@ require (
 	github.com/packer-community/winrmcp v0.0.0-20180102160824-81144009af58
 	github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c // indirect
 	github.com/pkg/errors v0.0.0-20170505043639-c605e284fe17 // indirect
-	github.com/posener/complete v1.1.1
+	github.com/posener/complete v1.2.1
 	github.com/satori/go.uuid v0.0.0-20160927100844-b061729afc07 // indirect
 	github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529 // indirect
 	github.com/sirupsen/logrus v1.1.1 // indirect
diff --git a/go.sum b/go.sum
index e4cf549b7..0ce64b319 100644
--- a/go.sum
+++ b/go.sum
@@ -309,6 +309,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1 h1:ccV59UEOTzVDnDUEFdT95ZzHVZ+5+158q8+SJb2QV5w=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
+github.com/posener/complete v1.2.1 h1:LrvDIY//XNo65Lq84G/akBuMGlawHvGBABv8f/ZN6DI=
+github.com/posener/complete v1.2.1/go.mod h1:6gapUrK/U1TAN7ciCoNRIdVC5sbdBTUh1DKN0g6uH7E=
 github.com/prometheus/client_golang v0.8.0 h1:1921Yw9Gc3iSc4VQh3PIoOqgPCZS7G/4xQNVUp8Mda8=
 github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8=
diff --git a/vendor/github.com/posener/complete/.gitignore b/vendor/github.com/posener/complete/.gitignore
index 136372081..293955f99 100644
--- a/vendor/github.com/posener/complete/.gitignore
+++ b/vendor/github.com/posener/complete/.gitignore
@@ -1,2 +1,4 @@
 .idea
 coverage.txt
+gocomplete/gocomplete
+example/self/self
diff --git a/vendor/github.com/posener/complete/.travis.yml b/vendor/github.com/posener/complete/.travis.yml
index c2798f8f3..2fae94541 100644
--- a/vendor/github.com/posener/complete/.travis.yml
+++ b/vendor/github.com/posener/complete/.travis.yml
@@ -1,17 +1,16 @@
 language: go
 sudo: false
 go:
+  - 1.11
+  - 1.10.x
   - 1.9
   - 1.8
 
 before_install:
   - go get -u -t ./...
-  - go get -u gopkg.in/alecthomas/gometalinter.v1
-  - gometalinter.v1 --install
 
 script:
-  - gometalinter.v1 --config metalinter.json ./...
-  - ./test.sh
+  - GO111MODULE=on ./test.sh
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/posener/complete/args.go b/vendor/github.com/posener/complete/args.go
index 1ba4d6919..17ab2c6d6 100644
--- a/vendor/github.com/posener/complete/args.go
+++ b/vendor/github.com/posener/complete/args.go
@@ -57,11 +57,20 @@ func newArgs(line string) Args {
 	}
 }
 
+// splitFields returns a list of fields from the given command line.
+// If the last character is space, it appends an empty field in the end
+// indicating that the field before it was completed.
+// If the last field is of the form "a=b", it splits it to two fields: "a", "b",
+// So it can be completed.
 func splitFields(line string) []string {
 	parts := strings.Fields(line)
+
+	// Add empty field if the last field was completed.
 	if len(line) > 0 && unicode.IsSpace(rune(line[len(line)-1])) {
 		parts = append(parts, "")
 	}
+
+	// Treat the last field if it is of the form "a=b"
 	parts = splitLastEqual(parts)
 	return parts
 }
diff --git a/vendor/github.com/posener/complete/cmd/cmd.go b/vendor/github.com/posener/complete/cmd/cmd.go
index 7137dee17..b99fe5290 100644
--- a/vendor/github.com/posener/complete/cmd/cmd.go
+++ b/vendor/github.com/posener/complete/cmd/cmd.go
@@ -103,7 +103,7 @@ func (f *CLI) AddFlags(flags *flag.FlagSet) {
 			fmt.Sprintf("Uninstall completion for %s command", f.Name))
 	}
 	if flags.Lookup("y") == nil {
-		flags.BoolVar(&f.yes, "y", false, "Don't prompt user for typing 'yes'")
+		flags.BoolVar(&f.yes, "y", false, "Don't prompt user for typing 'yes' when installing completion")
 	}
 }
 
diff --git a/vendor/github.com/posener/complete/cmd/install/fish.go b/vendor/github.com/posener/complete/cmd/install/fish.go
index f04e7c3ac..6467196bc 100644
--- a/vendor/github.com/posener/complete/cmd/install/fish.go
+++ b/vendor/github.com/posener/complete/cmd/install/fish.go
@@ -16,7 +16,10 @@ type fish struct {
 
 func (f fish) Install(cmd, bin string) error {
 	completionFile := filepath.Join(f.configDir, "completions", fmt.Sprintf("%s.fish", cmd))
-	completeCmd := f.cmd(cmd, bin)
+	completeCmd, err := f.cmd(cmd, bin)
+	if err != nil {
+		return err
+	}
 	if _, err := os.Stat(completionFile); err == nil {
 		return fmt.Errorf("already installed at %s", completionFile)
 	}
@@ -33,10 +36,10 @@ func (f fish) Uninstall(cmd, bin string) error {
 	return os.Remove(completionFile)
 }
 
-func (f fish) cmd(cmd, bin string) string {
+func (f fish) cmd(cmd, bin string) (string, error) {
 	var buf bytes.Buffer
 	params := struct{ Cmd, Bin string }{cmd, bin}
-	template.Must(template.New("cmd").Parse(`
+	tmpl := template.Must(template.New("cmd").Parse(`
 function __complete_{{.Cmd}}
     set -lx COMP_LINE (string join ' ' (commandline -o))
     test (commandline -ct) = ""
@@ -44,7 +47,10 @@ function __complete_{{.Cmd}}
     {{.Bin}}
 end
 complete -c {{.Cmd}} -a "(__complete_{{.Cmd}})"
-`)).Execute(&buf, params)
-
-	return string(buf.Bytes())
+`))
+	err := tmpl.Execute(&buf, params)
+	if err != nil {
+		return "", err
+	}
+	return buf.String(), nil
 }
diff --git a/vendor/github.com/posener/complete/cmd/install/install.go b/vendor/github.com/posener/complete/cmd/install/install.go
index 4a706242f..dfa1963b8 100644
--- a/vendor/github.com/posener/complete/cmd/install/install.go
+++ b/vendor/github.com/posener/complete/cmd/install/install.go
@@ -51,7 +51,7 @@ func Uninstall(cmd string) error {
 	for _, i := range is {
 		errI := i.Uninstall(cmd, bin)
 		if errI != nil {
-			multierror.Append(err, errI)
+			err = multierror.Append(err, errI)
 		}
 	}
 
diff --git a/vendor/github.com/posener/complete/cmd/install/utils.go b/vendor/github.com/posener/complete/cmd/install/utils.go
index bb709bc6c..d34ac8cae 100644
--- a/vendor/github.com/posener/complete/cmd/install/utils.go
+++ b/vendor/github.com/posener/complete/cmd/install/utils.go
@@ -115,7 +115,10 @@ func removeContentToTempFile(name, content string) (string, error) {
 		if str == content {
 			continue
 		}
-		wf.WriteString(str + "\n")
+		_, err = wf.WriteString(str + "\n")
+		if err != nil {
+			return "", err
+		}
 		prefix = prefix[:0]
 	}
 	return wf.Name(), nil
diff --git a/vendor/github.com/posener/complete/complete.go b/vendor/github.com/posener/complete/complete.go
index 185d1e8bd..725c4debc 100644
--- a/vendor/github.com/posener/complete/complete.go
+++ b/vendor/github.com/posener/complete/complete.go
@@ -10,14 +10,16 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strconv"
 
 	"github.com/posener/complete/cmd"
 	"github.com/posener/complete/match"
 )
 
 const (
-	envComplete = "COMP_LINE"
-	envDebug    = "COMP_DEBUG"
+	envLine  = "COMP_LINE"
+	envPoint = "COMP_POINT"
+	envDebug = "COMP_DEBUG"
 )
 
 // Complete structs define completion for a command with CLI options
@@ -55,13 +57,18 @@ func (c *Complete) Run() bool {
 // For installation: it assumes that flags were added and parsed before
 // it was called.
 func (c *Complete) Complete() bool {
-	line, ok := getLine()
+	line, point, ok := getEnv()
 	if !ok {
 		// make sure flags parsed,
 		// in case they were not added in the main program
 		return c.CLI.Run()
 	}
-	Log("Completing line: %s", line)
+
+	if point >= 0 && point < len(line) {
+		line = line[:point]
+	}
+
+	Log("Completing phrase: %s", line)
 	a := newArgs(line)
 	Log("Completing last field: %s", a.Last)
 	options := c.Command.Predict(a)
@@ -79,12 +86,19 @@ func (c *Complete) Complete() bool {
 	return true
 }
 
-func getLine() (string, bool) {
-	line := os.Getenv(envComplete)
+func getEnv() (line string, point int, ok bool) {
+	line = os.Getenv(envLine)
 	if line == "" {
-		return "", false
+		return
 	}
-	return line, true
+	point, err := strconv.Atoi(os.Getenv(envPoint))
+	if err != nil {
+		// If failed parsing point for some reason, set it to point
+		// on the end of the line.
+		Log("Failed parsing point %s: %v", os.Getenv(envPoint), err)
+		point = len(line)
+	}
+	return line, point, true
 }
 
 func (c *Complete) output(options []string) {
diff --git a/vendor/github.com/posener/complete/go.mod b/vendor/github.com/posener/complete/go.mod
new file mode 100644
index 000000000..fef0c440d
--- /dev/null
+++ b/vendor/github.com/posener/complete/go.mod
@@ -0,0 +1,3 @@
+module github.com/posener/complete
+
+require github.com/hashicorp/go-multierror v1.0.0
diff --git a/vendor/github.com/posener/complete/go.sum b/vendor/github.com/posener/complete/go.sum
new file mode 100644
index 000000000..d2f13301d
--- /dev/null
+++ b/vendor/github.com/posener/complete/go.sum
@@ -0,0 +1,4 @@
+github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
+github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
+github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
diff --git a/vendor/github.com/posener/complete/log.go b/vendor/github.com/posener/complete/log.go
index 797a80ced..c3029556e 100644
--- a/vendor/github.com/posener/complete/log.go
+++ b/vendor/github.com/posener/complete/log.go
@@ -1,7 +1,6 @@
 package complete
 
 import (
-	"io"
 	"io/ioutil"
 	"log"
 	"os"
@@ -15,7 +14,7 @@ import (
 var Log = getLogger()
 
 func getLogger() func(format string, args ...interface{}) {
-	var logfile io.Writer = ioutil.Discard
+	var logfile = ioutil.Discard
 	if os.Getenv(envDebug) != "" {
 		logfile = os.Stderr
 	}
diff --git a/vendor/github.com/posener/complete/metalinter.json b/vendor/github.com/posener/complete/metalinter.json
deleted file mode 100644
index 799c1d03f..000000000
--- a/vendor/github.com/posener/complete/metalinter.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-    "Vendor": true,
-    "DisableAll": true,
-    "Enable": [
-        "gofmt",
-        "goimports",
-        "interfacer",
-        "goconst",
-        "misspell",
-        "unconvert",
-        "gosimple",
-        "golint",
-        "structcheck",
-        "deadcode",
-        "vet"
-    ],
-    "Exclude": [
-        "initTests is unused"
-    ],
-    "Deadline": "2m"
-}
diff --git a/vendor/github.com/posener/complete/readme.md b/vendor/github.com/posener/complete/readme.md
index 2a999ba76..6d757ef82 100644
--- a/vendor/github.com/posener/complete/readme.md
+++ b/vendor/github.com/posener/complete/readme.md
@@ -4,6 +4,7 @@ A tool for bash writing bash completion in go, and bash completion for the go co
 
 [![Build Status](https://travis-ci.org/posener/complete.svg?branch=master)](https://travis-ci.org/posener/complete)
 [![codecov](https://codecov.io/gh/posener/complete/branch/master/graph/badge.svg)](https://codecov.io/gh/posener/complete)
+[![golangci](https://golangci.com/badges/github.com/posener/complete.svg)](https://golangci.com/r/github.com/posener/complete)
 [![GoDoc](https://godoc.org/github.com/posener/complete?status.svg)](http://godoc.org/github.com/posener/complete)
 [![Go Report Card](https://goreportcard.com/badge/github.com/posener/complete)](https://goreportcard.com/report/github.com/posener/complete)
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 0c22cbb19..2b005811b 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -406,7 +406,7 @@ github.com/oklog/run
 github.com/packer-community/winrmcp/winrmcp
 # github.com/pkg/errors v0.0.0-20170505043639-c605e284fe17
 github.com/pkg/errors
-# github.com/posener/complete v1.1.1
+# github.com/posener/complete v1.2.1
 github.com/posener/complete
 github.com/posener/complete/cmd/install
 github.com/posener/complete/cmd