Update mitchellh/cli to fix GH-7983

vendor/github.com/mitchellh/cli/.travis.yml

@@ -1,14 +0,0 @@
-sudo: false
-
-language: go
-
-go:
-    - 1.2
-    - 1.3
-    - 1.4
-    - 1.5
-    - tip
-
-matrix:
-    allow_failures:
-        - go: tip

vendor/github.com/mitchellh/cli/Makefile

@@ -0,0 +1,20 @@
+TEST?=./...
+
+default: test
+
+# test runs the test suite and vets the code
+test:
+	go list $(TEST) | xargs -n1 go test -timeout=60s -parallel=10 $(TESTARGS)
+
+# testrace runs the race checker
+testrace:
+	go list $(TEST) | xargs -n1 go test -race $(TESTARGS)
+
+# updatedeps installs all the dependencies to run and build
+updatedeps:
+	go list ./... \
+		| xargs go list -f '{{ join .Deps "\n" }}{{ printf "\n" }}{{ join .TestImports "\n" }}' \
+		| grep -v github.com/mitchellh/cli \
+		| xargs go get -f -u -v
+
+.PHONY: test testrace updatedeps

vendor/github.com/mitchellh/cli/cli.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"regexp"
 	"sort"
 	"strings"
 	"sync"
@@ -294,7 +295,7 @@ func (c *CLI) commandHelp(command Command) {
 		// Get the matching keys
 		subcommands := c.helpCommands(c.Subcommand())
 		keys := make([]string, 0, len(subcommands))
-		for k, _ := range subcommands {
+		for k := range subcommands {
 			keys = append(keys, k)
 		}
 
@@ -311,8 +312,13 @@ func (c *CLI) commandHelp(command Command) {
 
 		// Go through and create their structures
 		subcommandsTpl = make([]map[string]interface{}, 0, len(subcommands))
-		for k, raw := range subcommands {
+		for _, k := range keys {
 			// Get the command
+			raw, ok := subcommands[k]
+			if !ok {
+				c.HelpWriter.Write([]byte(fmt.Sprintf(
+					"Error getting subcommand %q", k)))
+			}
 			sub, err := raw()
 			if err != nil {
 				c.HelpWriter.Write([]byte(fmt.Sprintf(
@@ -400,16 +406,24 @@ func (c *CLI) processArgs() {
 		}
 
 		// If we didn't find a subcommand yet and this is the first non-flag
-		// argument, then this is our subcommand. j
+		// argument, then this is our subcommand.
 		if c.subcommand == "" && arg != "" && arg[0] != '-' {
 			c.subcommand = arg
 			if c.commandNested {
 				// Nested CLI, the subcommand is actually the entire
 				// arg list up to a flag that is still a valid subcommand.
-				k, _, ok := c.commandTree.LongestPrefix(strings.Join(c.Args[i:], " "))
+				searchKey := strings.Join(c.Args[i:], " ")
+				k, _, ok := c.commandTree.LongestPrefix(searchKey)
 				if ok {
-					c.subcommand = k
-					i += strings.Count(k, " ")
+					// k could be a prefix that doesn't contain the full
+					// command such as "foo" instead of "foobar", so we
+					// need to verify that we have an entire key. To do that,
+					// we look for an ending in a space or an end of string.
+					reVerify := regexp.MustCompile(regexp.QuoteMeta(k) + `( |$)`)
+					if reVerify.MatchString(searchKey) {
+						c.subcommand = k
+						i += strings.Count(k, " ")
+					}
 				}
 			}
 

vendor/vendor.json

@@ -1227,8 +1227,10 @@
 			"revision": "85659debe44fab5792fc92cf755c04b115b9dc19"
 		},
 		{
+			"checksumSHA1": "7niW29CvYceZ6zbia6b/LT+yD/M=",
 			"path": "github.com/mitchellh/cli",
-			"revision": "83f97d41cf100ee5f33944a8815c167d5e4aa272"
+			"revision": "fcf521421aa29bde1d93b6920dfce826d7932208",
+			"revisionTime": "2016-08-15T18:46:15Z"
 		},
 		{
 			"path": "github.com/mitchellh/colorstring",