vendor: upgrade "spf13/cobra,pflag" to latest

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

Gopkg.lock

@@ -209,13 +209,12 @@
 [[projects]]
   name = "github.com/spf13/cobra"
   packages = ["."]
-  revision = "1c44ec8d3f1552cac48999f9306da23c4d8a288b"
+  revision = "cd30c2a7e91a1d63fd9a0027accf18a681e9d50b"
 
 [[projects]]
   name = "github.com/spf13/pflag"
   packages = ["."]
-  revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
+  revision = "1ce0cc6db4029d97571db82f85092fccedb572ce"
-  version = "v1.0.0"
 
 [[projects]]
   name = "github.com/tmc/grpc-websocket-proxy"

vendor/github.com/spf13/cobra/args.go

@@ -0,0 +1,89 @@
+package cobra
+
+import (
+	"fmt"
+)
+
+type PositionalArgs func(cmd *Command, args []string) error
+
+// Legacy arg validation has the following behaviour:
+// - root commands with no subcommands can take arbitrary arguments
+// - root commands with subcommands will do subcommand validity checking
+// - subcommands will always accept arbitrary arguments
+func legacyArgs(cmd *Command, args []string) error {
+	// no subcommand, always take args
+	if !cmd.HasSubCommands() {
+		return nil
+	}
+
+	// root command with subcommands, do subcommand checking.
+	if !cmd.HasParent() && len(args) > 0 {
+		return fmt.Errorf("unknown command %q for %q%s", args[0], cmd.CommandPath(), cmd.findSuggestions(args[0]))
+	}
+	return nil
+}
+
+// NoArgs returns an error if any args are included.
+func NoArgs(cmd *Command, args []string) error {
+	if len(args) > 0 {
+		return fmt.Errorf("unknown command %q for %q", args[0], cmd.CommandPath())
+	}
+	return nil
+}
+
+// OnlyValidArgs returns an error if any args are not in the list of ValidArgs.
+func OnlyValidArgs(cmd *Command, args []string) error {
+	if len(cmd.ValidArgs) > 0 {
+		for _, v := range args {
+			if !stringInSlice(v, cmd.ValidArgs) {
+				return fmt.Errorf("invalid argument %q for %q%s", v, cmd.CommandPath(), cmd.findSuggestions(args[0]))
+			}
+		}
+	}
+	return nil
+}
+
+// ArbitraryArgs never returns an error.
+func ArbitraryArgs(cmd *Command, args []string) error {
+	return nil
+}
+
+// MinimumNArgs returns an error if there is not at least N args.
+func MinimumNArgs(n int) PositionalArgs {
+	return func(cmd *Command, args []string) error {
+		if len(args) < n {
+			return fmt.Errorf("requires at least %d arg(s), only received %d", n, len(args))
+		}
+		return nil
+	}
+}
+
+// MaximumNArgs returns an error if there are more than N args.
+func MaximumNArgs(n int) PositionalArgs {
+	return func(cmd *Command, args []string) error {
+		if len(args) > n {
+			return fmt.Errorf("accepts at most %d arg(s), received %d", n, len(args))
+		}
+		return nil
+	}
+}
+
+// ExactArgs returns an error if there are not exactly n args.
+func ExactArgs(n int) PositionalArgs {
+	return func(cmd *Command, args []string) error {
+		if len(args) != n {
+			return fmt.Errorf("accepts %d arg(s), received %d", n, len(args))
+		}
+		return nil
+	}
+}
+
+// RangeArgs returns an error if the number of args is not within the expected range.
+func RangeArgs(min int, max int) PositionalArgs {
+	return func(cmd *Command, args []string) error {
+		if len(args) < min || len(args) > max {
+			return fmt.Errorf("accepts between %d and %d arg(s), received %d", min, max, len(args))
+		}
+		return nil
+	}
+}

vendor/github.com/spf13/cobra/bash_completions.go

@@ -3,6 +3,7 @@ package cobra
 import (
 	"bytes"
 	"fmt"
+	"io"
 	"os"
 	"sort"
 	"strings"
@@ -10,16 +11,18 @@ import (
 	"github.com/spf13/pflag"
 )
 
+// Annotations for Bash completion.
 const (
-	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extentions"
+	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extensions"
+	BashCompCustom          = "cobra_annotation_bash_completion_custom"
 	BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
 	BashCompSubdirsInDir    = "cobra_annotation_bash_completion_subdirs_in_dir"
 )
 
-func preamble(out *bytes.Buffer) {
+func writePreamble(buf *bytes.Buffer, name string) {
-	fmt.Fprintf(out, `#!/bin/bash
+	buf.WriteString(fmt.Sprintf("# bash completion for %-36s -*- shell-script -*-\n", name))
-
+	buf.WriteString(fmt.Sprintf(`
-__debug()
+__%[1]s_debug()
 {
     if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
         echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
@@ -28,13 +31,13 @@ __debug()
 
 # Homebrew on Macs have version 1.3 of bash-completion which doesn't include
 # _init_completion. This is a very minimal version of that function.
-__my_init_completion()
+__%[1]s_init_completion()
 {
     COMPREPLY=()
-    _get_comp_words_by_ref cur prev words cword
+    _get_comp_words_by_ref "$@" cur prev words cword
 }
 
-__index_of_word()
+__%[1]s_index_of_word()
 {
     local w word=$1
     shift
@@ -46,7 +49,7 @@ __index_of_word()
     index=-1
 }
 
-__contains_word()
+__%[1]s_contains_word()
 {
     local w word=$1; shift
     for w in "$@"; do
@@ -55,9 +58,9 @@ __contains_word()
     return 1
 }
 
-__handle_reply()
+__%[1]s_handle_reply()
 {
-    __debug "${FUNCNAME}"
+    __%[1]s_debug "${FUNCNAME[0]}"
     case $cur in
         -*)
             if [[ $(type -t compopt) = "builtin" ]]; then
@@ -71,7 +74,28 @@ __handle_reply()
             fi
             COMPREPLY=( $(compgen -W "${allflags[*]}" -- "$cur") )
             if [[ $(type -t compopt) = "builtin" ]]; then
-                [[ $COMPREPLY == *= ]] || compopt +o nospace
+                [[ "${COMPREPLY[0]}" == *= ]] || compopt +o nospace
+            fi
+
+            # complete after --flag=abc
+            if [[ $cur == *=* ]]; then
+                if [[ $(type -t compopt) = "builtin" ]]; then
+                    compopt +o nospace
+                fi
+
+                local index flag
+                flag="${cur%%=*}"
+                __%[1]s_index_of_word "${flag}" "${flags_with_completion[@]}"
+                COMPREPLY=()
+                if [[ ${index} -ge 0 ]]; then
+                    PREFIX=""
+                    cur="${cur#*=}"
+                    ${flags_completion[${index}]}
+                    if [ -n "${ZSH_VERSION}" ]; then
+                        # zsh completion needs --flag= prefix
+                        eval "COMPREPLY=( \"\${COMPREPLY[@]/#/${flag}=}\" )"
+                    fi
+                fi
             fi
             return 0;
             ;;
@@ -79,7 +103,7 @@ __handle_reply()
 
     # check if we are handling a flag with special work handling
     local index
-    __index_of_word "${prev}" "${flags_with_completion[@]}"
+    __%[1]s_index_of_word "${prev}" "${flags_with_completion[@]}"
     if [[ ${index} -ge 0 ]]; then
         ${flags_completion[${index}]}
         return
@@ -91,51 +115,85 @@ __handle_reply()
     fi
 
     local completions
-    if [[ ${#must_have_one_flag[@]} -ne 0 ]]; then
-        completions=("${must_have_one_flag[@]}")
-    elif [[ ${#must_have_one_noun[@]} -ne 0 ]]; then
-        completions=("${must_have_one_noun[@]}")
-    else
     completions=("${commands[@]}")
+    if [[ ${#must_have_one_noun[@]} -ne 0 ]]; then
+        completions=("${must_have_one_noun[@]}")
+    fi
+    if [[ ${#must_have_one_flag[@]} -ne 0 ]]; then
+        completions+=("${must_have_one_flag[@]}")
     fi
     COMPREPLY=( $(compgen -W "${completions[*]}" -- "$cur") )
 
+    if [[ ${#COMPREPLY[@]} -eq 0 && ${#noun_aliases[@]} -gt 0 && ${#must_have_one_noun[@]} -ne 0 ]]; then
+        COMPREPLY=( $(compgen -W "${noun_aliases[*]}" -- "$cur") )
+    fi
+
     if [[ ${#COMPREPLY[@]} -eq 0 ]]; then
         declare -F __custom_func >/dev/null && __custom_func
     fi
+
+    # available in bash-completion >= 2, not always present on macOS
+    if declare -F __ltrim_colon_completions >/dev/null; then
+        __ltrim_colon_completions "$cur"
+    fi
+
+    # If there is only 1 completion and it is a flag with an = it will be completed
+    # but we don't want a space after the =
+    if [[ "${#COMPREPLY[@]}" -eq "1" ]] && [[ $(type -t compopt) = "builtin" ]] && [[ "${COMPREPLY[0]}" == --*= ]]; then
+       compopt -o nospace
+    fi
 }
 
 # The arguments should be in the form "ext1|ext2|extn"
-__handle_filename_extension_flag()
+__%[1]s_handle_filename_extension_flag()
 {
     local ext="$1"
     _filedir "@(${ext})"
 }
 
-__handle_subdirs_in_dir_flag()
+__%[1]s_handle_subdirs_in_dir_flag()
 {
     local dir="$1"
     pushd "${dir}" >/dev/null 2>&1 && _filedir -d && popd >/dev/null 2>&1
 }
 
-__handle_flag()
+__%[1]s_handle_flag()
 {
-    __debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
+    __%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
 
     # if a command required a flag, and we found it, unset must_have_one_flag()
     local flagname=${words[c]}
+    local flagvalue
     # if the word contained an =
     if [[ ${words[c]} == *"="* ]]; then
+        flagvalue=${flagname#*=} # take in as flagvalue after the =
         flagname=${flagname%%=*} # strip everything after the =
         flagname="${flagname}=" # but put the = back
     fi
-    __debug "${FUNCNAME}: looking for ${flagname}"
+    __%[1]s_debug "${FUNCNAME[0]}: looking for ${flagname}"
-    if __contains_word "${flagname}" "${must_have_one_flag[@]}"; then
+    if __%[1]s_contains_word "${flagname}" "${must_have_one_flag[@]}"; then
         must_have_one_flag=()
     fi
 
+    # if you set a flag which only applies to this command, don't show subcommands
+    if __%[1]s_contains_word "${flagname}" "${local_nonpersistent_flags[@]}"; then
+      commands=()
+    fi
+
+    # keep flag value with flagname as flaghash
+    # flaghash variable is an associative array which is only supported in bash > 3.
+    if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then
+        if [ -n "${flagvalue}" ] ; then
+            flaghash[${flagname}]=${flagvalue}
+        elif [ -n "${words[ $((c+1)) ]}" ] ; then
+            flaghash[${flagname}]=${words[ $((c+1)) ]}
+        else
+            flaghash[${flagname}]="true" # pad "true" for bool flag
+        fi
+    fi
+
     # skip the argument to a two word flag
-    if __contains_word "${words[c]}" "${two_word_flags[@]}"; then
+    if __%[1]s_contains_word "${words[c]}" "${two_word_flags[@]}"; then
         c=$((c+1))
         # if we are looking for a flags value, don't show commands
         if [[ $c -eq $cword ]]; then
@@ -143,16 +201,17 @@ __handle_flag()
         fi
     fi
 
-    # skip the flag itself
     c=$((c+1))
 
 }
 
-__handle_noun()
+__%[1]s_handle_noun()
 {
-    __debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
+    __%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
 
-    if __contains_word "${words[c]}" "${must_have_one_noun[@]}"; then
+    if __%[1]s_contains_word "${words[c]}" "${must_have_one_noun[@]}"; then
+        must_have_one_noun=()
+    elif __%[1]s_contains_word "${words[c]}" "${noun_aliases[@]}"; then
         must_have_one_noun=()
     fi
 
@@ -160,262 +219,327 @@ __handle_noun()
     c=$((c+1))
 }
 
-__handle_command()
+__%[1]s_handle_command()
 {
-    __debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
+    __%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
 
     local next_command
     if [[ -n ${last_command} ]]; then
-        next_command="_${last_command}_${words[c]}"
+        next_command="_${last_command}_${words[c]//:/__}"
     else
-        next_command="_${words[c]}"
+        if [[ $c -eq 0 ]]; then
+            next_command="_%[1]s_root_command"
+        else
+            next_command="_${words[c]//:/__}"
+        fi
     fi
     c=$((c+1))
-    __debug "${FUNCNAME}: looking for ${next_command}"
+    __%[1]s_debug "${FUNCNAME[0]}: looking for ${next_command}"
-    declare -F $next_command >/dev/null && $next_command
+    declare -F "$next_command" >/dev/null && $next_command
 }
 
-__handle_word()
+__%[1]s_handle_word()
 {
     if [[ $c -ge $cword ]]; then
-        __handle_reply
+        __%[1]s_handle_reply
         return
     fi
-    __debug "${FUNCNAME}: c is $c words[c] is ${words[c]}"
+    __%[1]s_debug "${FUNCNAME[0]}: c is $c words[c] is ${words[c]}"
     if [[ "${words[c]}" == -* ]]; then
-        __handle_flag
+        __%[1]s_handle_flag
-    elif __contains_word "${words[c]}" "${commands[@]}"; then
+    elif __%[1]s_contains_word "${words[c]}" "${commands[@]}"; then
-        __handle_command
+        __%[1]s_handle_command
+    elif [[ $c -eq 0 ]]; then
+        __%[1]s_handle_command
     else
-        __handle_noun
+        __%[1]s_handle_noun
     fi
-    __handle_word
+    __%[1]s_handle_word
 }
 
-`)
+`, name))
 }
 
-func postscript(out *bytes.Buffer, name string) {
+func writePostscript(buf *bytes.Buffer, name string) {
-	fmt.Fprintf(out, "__start_%s()\n", name)
+	name = strings.Replace(name, ":", "__", -1)
-	fmt.Fprintf(out, `{
+	buf.WriteString(fmt.Sprintf("__start_%s()\n", name))
+	buf.WriteString(fmt.Sprintf(`{
     local cur prev words cword
+    declare -A flaghash 2>/dev/null || :
     if declare -F _init_completion >/dev/null 2>&1; then
         _init_completion -s || return
     else
-        __my_init_completion || return
+        __%[1]s_init_completion -n "=" || return
     fi
 
     local c=0
     local flags=()
     local two_word_flags=()
+    local local_nonpersistent_flags=()
     local flags_with_completion=()
     local flags_completion=()
-    local commands=("%s")
+    local commands=("%[1]s")
     local must_have_one_flag=()
     local must_have_one_noun=()
     local last_command
     local nouns=()
 
-    __handle_word
+    __%[1]s_handle_word
 }
 
-`, name)
+`, name))
-	fmt.Fprintf(out, `if [[ $(type -t compopt) = "builtin" ]]; then
+	buf.WriteString(fmt.Sprintf(`if [[ $(type -t compopt) = "builtin" ]]; then
-    complete -F __start_%s %s
+    complete -o default -F __start_%s %s
 else
-    complete -o nospace -F __start_%s %s
+    complete -o default -o nospace -F __start_%s %s
 fi
 
-`, name, name, name, name)
+`, name, name, name, name))
-	fmt.Fprintf(out, "# ex: ts=4 sw=4 et filetype=sh\n")
+	buf.WriteString("# ex: ts=4 sw=4 et filetype=sh\n")
 }
 
-func writeCommands(cmd *Command, out *bytes.Buffer) {
+func writeCommands(buf *bytes.Buffer, cmd *Command) {
-	fmt.Fprintf(out, "    commands=()\n")
+	buf.WriteString("    commands=()\n")
 	for _, c := range cmd.Commands() {
 		if !c.IsAvailableCommand() || c == cmd.helpCommand {
 			continue
 		}
-		fmt.Fprintf(out, "    commands+=(%q)\n", c.Name())
+		buf.WriteString(fmt.Sprintf("    commands+=(%q)\n", c.Name()))
 	}
-	fmt.Fprintf(out, "\n")
+	buf.WriteString("\n")
 }
 
-func writeFlagHandler(name string, annotations map[string][]string, out *bytes.Buffer) {
+func writeFlagHandler(buf *bytes.Buffer, name string, annotations map[string][]string, cmd *Command) {
 	for key, value := range annotations {
 		switch key {
 		case BashCompFilenameExt:
-			fmt.Fprintf(out, "    flags_with_completion+=(%q)\n", name)
+			buf.WriteString(fmt.Sprintf("    flags_with_completion+=(%q)\n", name))
 
+			var ext string
 			if len(value) > 0 {
-				ext := "__handle_filename_extension_flag " + strings.Join(value, "|")
+				ext = fmt.Sprintf("__%s_handle_filename_extension_flag ", cmd.Root().Name()) + strings.Join(value, "|")
-				fmt.Fprintf(out, "    flags_completion+=(%q)\n", ext)
 			} else {
-				ext := "_filedir"
+				ext = "_filedir"
-				fmt.Fprintf(out, "    flags_completion+=(%q)\n", ext)
+			}
+			buf.WriteString(fmt.Sprintf("    flags_completion+=(%q)\n", ext))
+		case BashCompCustom:
+			buf.WriteString(fmt.Sprintf("    flags_with_completion+=(%q)\n", name))
+			if len(value) > 0 {
+				handlers := strings.Join(value, "; ")
+				buf.WriteString(fmt.Sprintf("    flags_completion+=(%q)\n", handlers))
+			} else {
+				buf.WriteString("    flags_completion+=(:)\n")
 			}
 		case BashCompSubdirsInDir:
-			fmt.Fprintf(out, "    flags_with_completion+=(%q)\n", name)
+			buf.WriteString(fmt.Sprintf("    flags_with_completion+=(%q)\n", name))
 
+			var ext string
 			if len(value) == 1 {
-				ext := "__handle_subdirs_in_dir_flag " + value[0]
+				ext = fmt.Sprintf("__%s_handle_subdirs_in_dir_flag ", cmd.Root().Name()) + value[0]
-				fmt.Fprintf(out, "    flags_completion+=(%q)\n", ext)
 			} else {
-				ext := "_filedir -d"
+				ext = "_filedir -d"
-				fmt.Fprintf(out, "    flags_completion+=(%q)\n", ext)
 			}
+			buf.WriteString(fmt.Sprintf("    flags_completion+=(%q)\n", ext))
 		}
 	}
 }
 
-func writeShortFlag(flag *pflag.Flag, out *bytes.Buffer) {
+func writeShortFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) {
-	b := (flag.Value.Type() == "bool")
 	name := flag.Shorthand
 	format := "    "
-	if !b {
+	if len(flag.NoOptDefVal) == 0 {
 		format += "two_word_"
 	}
 	format += "flags+=(\"-%s\")\n"
-	fmt.Fprintf(out, format, name)
+	buf.WriteString(fmt.Sprintf(format, name))
-	writeFlagHandler("-"+name, flag.Annotations, out)
+	writeFlagHandler(buf, "-"+name, flag.Annotations, cmd)
 }
 
-func writeFlag(flag *pflag.Flag, out *bytes.Buffer) {
+func writeFlag(buf *bytes.Buffer, flag *pflag.Flag, cmd *Command) {
-	b := (flag.Value.Type() == "bool")
 	name := flag.Name
 	format := "    flags+=(\"--%s"
-	if !b {
+	if len(flag.NoOptDefVal) == 0 {
 		format += "="
 	}
 	format += "\")\n"
-	fmt.Fprintf(out, format, name)
+	buf.WriteString(fmt.Sprintf(format, name))
-	writeFlagHandler("--"+name, flag.Annotations, out)
+	writeFlagHandler(buf, "--"+name, flag.Annotations, cmd)
 }
 
-func writeFlags(cmd *Command, out *bytes.Buffer) {
+func writeLocalNonPersistentFlag(buf *bytes.Buffer, flag *pflag.Flag) {
-	fmt.Fprintf(out, `    flags=()
+	name := flag.Name
+	format := "    local_nonpersistent_flags+=(\"--%s"
+	if len(flag.NoOptDefVal) == 0 {
+		format += "="
+	}
+	format += "\")\n"
+	buf.WriteString(fmt.Sprintf(format, name))
+}
+
+func writeFlags(buf *bytes.Buffer, cmd *Command) {
+	buf.WriteString(`    flags=()
     two_word_flags=()
+    local_nonpersistent_flags=()
     flags_with_completion=()
     flags_completion=()
 
 `)
+	localNonPersistentFlags := cmd.LocalNonPersistentFlags()
 	cmd.NonInheritedFlags().VisitAll(func(flag *pflag.Flag) {
-		writeFlag(flag, out)
+		if nonCompletableFlag(flag) {
+			return
+		}
+		writeFlag(buf, flag, cmd)
 		if len(flag.Shorthand) > 0 {
-			writeShortFlag(flag, out)
+			writeShortFlag(buf, flag, cmd)
+		}
+		if localNonPersistentFlags.Lookup(flag.Name) != nil {
+			writeLocalNonPersistentFlag(buf, flag)
 		}
 	})
 	cmd.InheritedFlags().VisitAll(func(flag *pflag.Flag) {
-		writeFlag(flag, out)
+		if nonCompletableFlag(flag) {
+			return
+		}
+		writeFlag(buf, flag, cmd)
 		if len(flag.Shorthand) > 0 {
-			writeShortFlag(flag, out)
+			writeShortFlag(buf, flag, cmd)
 		}
 	})
 
-	fmt.Fprintf(out, "\n")
+	buf.WriteString("\n")
 }
 
-func writeRequiredFlag(cmd *Command, out *bytes.Buffer) {
+func writeRequiredFlag(buf *bytes.Buffer, cmd *Command) {
-	fmt.Fprintf(out, "    must_have_one_flag=()\n")
+	buf.WriteString("    must_have_one_flag=()\n")
 	flags := cmd.NonInheritedFlags()
 	flags.VisitAll(func(flag *pflag.Flag) {
+		if nonCompletableFlag(flag) {
+			return
+		}
 		for key := range flag.Annotations {
 			switch key {
 			case BashCompOneRequiredFlag:
 				format := "    must_have_one_flag+=(\"--%s"
-				b := (flag.Value.Type() == "bool")
+				if flag.Value.Type() != "bool" {
-				if !b {
 					format += "="
 				}
 				format += "\")\n"
-				fmt.Fprintf(out, format, flag.Name)
+				buf.WriteString(fmt.Sprintf(format, flag.Name))
 
 				if len(flag.Shorthand) > 0 {
-					fmt.Fprintf(out, "    must_have_one_flag+=(\"-%s\")\n", flag.Shorthand)
+					buf.WriteString(fmt.Sprintf("    must_have_one_flag+=(\"-%s\")\n", flag.Shorthand))
 				}
 			}
 		}
 	})
 }
 
-func writeRequiredNoun(cmd *Command, out *bytes.Buffer) {
+func writeRequiredNouns(buf *bytes.Buffer, cmd *Command) {
-	fmt.Fprintf(out, "    must_have_one_noun=()\n")
+	buf.WriteString("    must_have_one_noun=()\n")
 	sort.Sort(sort.StringSlice(cmd.ValidArgs))
 	for _, value := range cmd.ValidArgs {
-		fmt.Fprintf(out, "    must_have_one_noun+=(%q)\n", value)
+		buf.WriteString(fmt.Sprintf("    must_have_one_noun+=(%q)\n", value))
 	}
 }
 
-func gen(cmd *Command, out *bytes.Buffer) {
+func writeArgAliases(buf *bytes.Buffer, cmd *Command) {
+	buf.WriteString("    noun_aliases=()\n")
+	sort.Sort(sort.StringSlice(cmd.ArgAliases))
+	for _, value := range cmd.ArgAliases {
+		buf.WriteString(fmt.Sprintf("    noun_aliases+=(%q)\n", value))
+	}
+}
+
+func gen(buf *bytes.Buffer, cmd *Command) {
 	for _, c := range cmd.Commands() {
 		if !c.IsAvailableCommand() || c == cmd.helpCommand {
 			continue
 		}
-		gen(c, out)
+		gen(buf, c)
 	}
 	commandName := cmd.CommandPath()
 	commandName = strings.Replace(commandName, " ", "_", -1)
-	fmt.Fprintf(out, "_%s()\n{\n", commandName)
+	commandName = strings.Replace(commandName, ":", "__", -1)
-	fmt.Fprintf(out, "    last_command=%q\n", commandName)
-	writeCommands(cmd, out)
-	writeFlags(cmd, out)
-	writeRequiredFlag(cmd, out)
-	writeRequiredNoun(cmd, out)
-	fmt.Fprintf(out, "}\n\n")
-}
 
-func (cmd *Command) GenBashCompletion(out *bytes.Buffer) {
+	if cmd.Root() == cmd {
-	preamble(out)
+		buf.WriteString(fmt.Sprintf("_%s_root_command()\n{\n", commandName))
-	if len(cmd.BashCompletionFunction) > 0 {
+	} else {
-		fmt.Fprintf(out, "%s\n", cmd.BashCompletionFunction)
+		buf.WriteString(fmt.Sprintf("_%s()\n{\n", commandName))
 	}
-	gen(cmd, out)
+
-	postscript(out, cmd.Name())
+	buf.WriteString(fmt.Sprintf("    last_command=%q\n", commandName))
+	writeCommands(buf, cmd)
+	writeFlags(buf, cmd)
+	writeRequiredFlag(buf, cmd)
+	writeRequiredNouns(buf, cmd)
+	writeArgAliases(buf, cmd)
+	buf.WriteString("}\n\n")
 }
 
-func (cmd *Command) GenBashCompletionFile(filename string) error {
+// GenBashCompletion generates bash completion file and writes to the passed writer.
-	out := new(bytes.Buffer)
+func (c *Command) GenBashCompletion(w io.Writer) error {
+	buf := new(bytes.Buffer)
+	writePreamble(buf, c.Name())
+	if len(c.BashCompletionFunction) > 0 {
+		buf.WriteString(c.BashCompletionFunction + "\n")
+	}
+	gen(buf, c)
+	writePostscript(buf, c.Name())
 
-	cmd.GenBashCompletion(out)
+	_, err := buf.WriteTo(w)
+	return err
+}
 
+func nonCompletableFlag(flag *pflag.Flag) bool {
+	return flag.Hidden || len(flag.Deprecated) > 0
+}
+
+// GenBashCompletionFile generates bash completion file.
+func (c *Command) GenBashCompletionFile(filename string) error {
 	outFile, err := os.Create(filename)
 	if err != nil {
 		return err
 	}
 	defer outFile.Close()
 
-	_, err = outFile.Write(out.Bytes())
+	return c.GenBashCompletion(outFile)
-	if err != nil {
-		return err
-	}
-	return nil
 }
 
-// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag, if it exists.
+// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists,
-func (cmd *Command) MarkFlagRequired(name string) error {
+// and causes your command to report an error if invoked without the flag.
-	return MarkFlagRequired(cmd.Flags(), name)
+func (c *Command) MarkFlagRequired(name string) error {
+	return MarkFlagRequired(c.Flags(), name)
 }
 
-// MarkPersistentFlagRequired adds the BashCompOneRequiredFlag annotation to the named persistent flag, if it exists.
+// MarkPersistentFlagRequired adds the BashCompOneRequiredFlag annotation to the named persistent flag if it exists,
-func (cmd *Command) MarkPersistentFlagRequired(name string) error {
+// and causes your command to report an error if invoked without the flag.
-	return MarkFlagRequired(cmd.PersistentFlags(), name)
+func (c *Command) MarkPersistentFlagRequired(name string) error {
+	return MarkFlagRequired(c.PersistentFlags(), name)
 }
 
-// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag in the flag set, if it exists.
+// MarkFlagRequired adds the BashCompOneRequiredFlag annotation to the named flag if it exists,
+// and causes your command to report an error if invoked without the flag.
 func MarkFlagRequired(flags *pflag.FlagSet, name string) error {
 	return flags.SetAnnotation(name, BashCompOneRequiredFlag, []string{"true"})
 }
 
 // MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag, if it exists.
 // Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided.
-func (cmd *Command) MarkFlagFilename(name string, extensions ...string) error {
+func (c *Command) MarkFlagFilename(name string, extensions ...string) error {
-	return MarkFlagFilename(cmd.Flags(), name, extensions...)
+	return MarkFlagFilename(c.Flags(), name, extensions...)
+}
+
+// MarkFlagCustom adds the BashCompCustom annotation to the named flag, if it exists.
+// Generated bash autocompletion will call the bash function f for the flag.
+func (c *Command) MarkFlagCustom(name string, f string) error {
+	return MarkFlagCustom(c.Flags(), name, f)
 }
 
 // MarkPersistentFlagFilename adds the BashCompFilenameExt annotation to the named persistent flag, if it exists.
 // Generated bash autocompletion will select filenames for the flag, limiting to named extensions if provided.
-func (cmd *Command) MarkPersistentFlagFilename(name string, extensions ...string) error {
+func (c *Command) MarkPersistentFlagFilename(name string, extensions ...string) error {
-	return MarkFlagFilename(cmd.PersistentFlags(), name, extensions...)
+	return MarkFlagFilename(c.PersistentFlags(), name, extensions...)
 }
 
 // MarkFlagFilename adds the BashCompFilenameExt annotation to the named flag in the flag set, if it exists.
@@ -423,3 +547,9 @@ func (cmd *Command) MarkPersistentFlagFilename(name string, extensions ...string
 func MarkFlagFilename(flags *pflag.FlagSet, name string, extensions ...string) error {
 	return flags.SetAnnotation(name, BashCompFilenameExt, extensions)
 }
+
+// MarkFlagCustom adds the BashCompCustom annotation to the named flag in the flag set, if it exists.
+// Generated bash autocompletion will call the bash function f for the flag.
+func MarkFlagCustom(flags *pflag.FlagSet, name string, f string) error {
+	return flags.SetAnnotation(name, BashCompCustom, []string{f})
+}

vendor/github.com/spf13/cobra/cobra.go

@@ -26,9 +26,11 @@ import (
 	"unicode"
 )
 
-var templateFuncs template.FuncMap = template.FuncMap{
+var templateFuncs = template.FuncMap{
 	"trim":                    strings.TrimSpace,
 	"trimRightSpace":          trimRightSpace,
+	"trimTrailingWhitespaces": trimRightSpace,
+	"appendIfNotPresent":      appendIfNotPresent,
 	"rpad":                    rpad,
 	"gt":                      Gt,
 	"eq":                      Eq,
@@ -36,42 +38,49 @@ var templateFuncs template.FuncMap = template.FuncMap{
 
 var initializers []func()
 
-// automatic prefix matching can be a dangerous thing to automatically enable in CLI tools.
+// EnablePrefixMatching allows to set automatic prefix matching. Automatic prefix matching can be a dangerous thing
-// Set this to true to enable it
+// to automatically enable in CLI tools.
-var EnablePrefixMatching bool = false
+// Set this to true to enable it.
+var EnablePrefixMatching = false
 
-// enables an information splash screen on Windows if the CLI is started from explorer.exe.
+// EnableCommandSorting controls sorting of the slice of commands, which is turned on by default.
-var EnableWindowsMouseTrap bool = true
+// To disable sorting, set it to false.
+var EnableCommandSorting = true
 
-var MousetrapHelpText string = `This is a command line tool
+// MousetrapHelpText enables an information splash screen on Windows
+// if the CLI is started from explorer.exe.
+// To disable the mousetrap, just set this variable to blank string ("").
+// Works only on Microsoft Windows.
+var MousetrapHelpText string = `This is a command line tool.
 
 You need to open cmd.exe and run it from there.
 `
 
-//AddTemplateFunc adds a template function that's available to Usage and Help
+// AddTemplateFunc adds a template function that's available to Usage and Help
-//template generation.
+// template generation.
 func AddTemplateFunc(name string, tmplFunc interface{}) {
 	templateFuncs[name] = tmplFunc
 }
 
-//AddTemplateFuncs adds multiple template functions availalble to Usage and
+// AddTemplateFuncs adds multiple template functions that are available to Usage and
-//Help template generation.
+// Help template generation.
 func AddTemplateFuncs(tmplFuncs template.FuncMap) {
 	for k, v := range tmplFuncs {
 		templateFuncs[k] = v
 	}
 }
 
-//OnInitialize takes a series of func() arguments and appends them to a slice of func().
+// OnInitialize sets the passed functions to be run when each command's
+// Execute method is called.
 func OnInitialize(y ...func()) {
-	for _, x := range y {
+	initializers = append(initializers, y...)
-		initializers = append(initializers, x)
-	}
 }
 
-//Gt takes two types and checks whether the first type is greater than the second. In case of types Arrays, Chans,
+// FIXME Gt is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
-//Maps and Slices, Gt will compare their lengths. Ints are compared directly while strings are first parsed as
+
-//ints and then compared.
+// Gt takes two types and checks whether the first type is greater than the second. In case of types Arrays, Chans,
+// Maps and Slices, Gt will compare their lengths. Ints are compared directly while strings are first parsed as
+// ints and then compared.
 func Gt(a interface{}, b interface{}) bool {
 	var left, right int64
 	av := reflect.ValueOf(a)
@@ -99,7 +108,9 @@ func Gt(a interface{}, b interface{}) bool {
 	return left > right
 }
 
-//Eq takes two types and checks whether they are equal. Supported types are int and string. Unsupported types will panic.
+// FIXME Eq is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
+
+// Eq takes two types and checks whether they are equal. Supported types are int and string. Unsupported types will panic.
 func Eq(a interface{}, b interface{}) bool {
 	av := reflect.ValueOf(a)
 	bv := reflect.ValueOf(b)
@@ -119,7 +130,17 @@ func trimRightSpace(s string) string {
 	return strings.TrimRightFunc(s, unicode.IsSpace)
 }
 
-//rpad adds padding to the right of a string
+// FIXME appendIfNotPresent is unused by cobra and should be removed in a version 2. It exists only for compatibility with users of cobra.
+
+// appendIfNotPresent will append stringToAppend to the end of s, but only if it's not yet present in s.
+func appendIfNotPresent(s, stringToAppend string) string {
+	if strings.Contains(s, stringToAppend) {
+		return s
+	}
+	return s + " " + stringToAppend
+}
+
+// rpad adds padding to the right of a string.
 func rpad(s string, padding int) string {
 	template := fmt.Sprintf("%%-%ds", padding)
 	return fmt.Sprintf(template, s)
@@ -133,7 +154,7 @@ func tmpl(w io.Writer, text string, data interface{}) error {
 	return t.Execute(w, data)
 }
 
-// ld compares two strings and returns the levenshtein distance between them
+// ld compares two strings and returns the levenshtein distance between them.
 func ld(s, t string, ignoreCase bool) int {
 	if ignoreCase {
 		s = strings.ToLower(s)
@@ -168,3 +189,12 @@ func ld(s, t string, ignoreCase bool) int {
 	}
 	return d[len(s)][len(t)]
 }
+
+func stringInSlice(a string, list []string) bool {
+	for _, b := range list {
+		if b == a {
+			return true
+		}
+	}
+	return false
+}

vendor/github.com/spf13/cobra/command_notwin.go

@@ -0,0 +1,5 @@
+// +build !windows
+
+package cobra
+
+var preExecHookFn func(*Command)

vendor/github.com/spf13/cobra/command_win.go

@@ -0,0 +1,20 @@
+// +build windows
+
+package cobra
+
+import (
+	"os"
+	"time"
+
+	"github.com/inconshreveable/mousetrap"
+)
+
+var preExecHookFn = preExecHook
+
+func preExecHook(c *Command) {
+	if MousetrapHelpText != "" && mousetrap.StartedByExplorer() {
+		c.Print(MousetrapHelpText)
+		time.Sleep(5 * time.Second)
+		os.Exit(1)
+	}
+}

vendor/github.com/spf13/cobra/doc_util.go

@@ -1,34 +0,0 @@
-// Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package cobra
-
-// Test to see if we have a reason to print See Also information in docs
-// Basically this is a test for a parent commend or a subcommand which is
-// both not deprecated and not the autogenerated help command.
-func (cmd *Command) hasSeeAlso() bool {
-	if cmd.HasParent() {
-		return true
-	}
-	children := cmd.Commands()
-	if len(children) == 0 {
-		return false
-	}
-	for _, c := range children {
-		if !c.IsAvailableCommand() || c == cmd.helpCommand {
-			continue
-		}
-		return true
-	}
-	return false
-}

vendor/github.com/spf13/cobra/man_docs.go

@@ -1,227 +0,0 @@
-// Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package cobra
-
-import (
-	"bytes"
-	"fmt"
-	"os"
-	"sort"
-	"strings"
-	"time"
-
-	mangen "github.com/cpuguy83/go-md2man/md2man"
-	"github.com/spf13/pflag"
-)
-
-// GenManTree will call cmd.GenManTree(header, dir)
-func GenManTree(cmd *Command, header *GenManHeader, dir string) {
-	cmd.GenManTree(header, dir)
-}
-
-// GenManTree will generate a man page for this command and all decendants
-// in the directory given. The header may be nil. This function may not work
-// correctly if your command names have - in them. If you have `cmd` with two
-// subcmds, `sub` and `sub-third`. And `sub` has a subcommand called `third`
-// it is undefined which help output will be in the file `cmd-sub-third.1`.
-func (cmd *Command) GenManTree(header *GenManHeader, dir string) {
-	if header == nil {
-		header = &GenManHeader{}
-	}
-	for _, c := range cmd.Commands() {
-		if !c.IsAvailableCommand() || c == cmd.helpCommand {
-			continue
-		}
-		GenManTree(c, header, dir)
-	}
-	out := new(bytes.Buffer)
-
-	needToResetTitle := header.Title == ""
-
-	cmd.GenMan(header, out)
-
-	if needToResetTitle {
-		header.Title = ""
-	}
-
-	filename := cmd.CommandPath()
-	filename = dir + strings.Replace(filename, " ", "-", -1) + ".1"
-	outFile, err := os.Create(filename)
-	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-	defer outFile.Close()
-	_, err = outFile.Write(out.Bytes())
-	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-}
-
-// GenManHeader is a lot like the .TH header at the start of man pages. These
-// include the title, section, date, source, and manual. We will use the
-// current time if Date if unset and will use "Auto generated by spf13/cobra"
-// if the Source is unset.
-type GenManHeader struct {
-	Title   string
-	Section string
-	Date    *time.Time
-	date    string
-	Source  string
-	Manual  string
-}
-
-// GenMan will call cmd.GenMan(header, out)
-func GenMan(cmd *Command, header *GenManHeader, out *bytes.Buffer) {
-	cmd.GenMan(header, out)
-}
-
-// GenMan will generate a man page for the given command in the out buffer.
-// The header argument may be nil, however obviously out may not.
-func (cmd *Command) GenMan(header *GenManHeader, out *bytes.Buffer) {
-	if header == nil {
-		header = &GenManHeader{}
-	}
-	buf := genMarkdown(cmd, header)
-	final := mangen.Render(buf)
-	out.Write(final)
-}
-
-func fillHeader(header *GenManHeader, name string) {
-	if header.Title == "" {
-		header.Title = strings.ToUpper(strings.Replace(name, " ", "\\-", -1))
-	}
-	if header.Section == "" {
-		header.Section = "1"
-	}
-	if header.Date == nil {
-		now := time.Now()
-		header.Date = &now
-	}
-	header.date = (*header.Date).Format("Jan 2006")
-	if header.Source == "" {
-		header.Source = "Auto generated by spf13/cobra"
-	}
-}
-
-func manPreamble(out *bytes.Buffer, header *GenManHeader, name, short, long string) {
-	dashName := strings.Replace(name, " ", "-", -1)
-	fmt.Fprintf(out, `%% %s(%s)%s
-%% %s
-%% %s
-# NAME
-`, header.Title, header.Section, header.date, header.Source, header.Manual)
-	fmt.Fprintf(out, "%s \\- %s\n\n", dashName, short)
-	fmt.Fprintf(out, "# SYNOPSIS\n")
-	fmt.Fprintf(out, "**%s** [OPTIONS]\n\n", name)
-	fmt.Fprintf(out, "# DESCRIPTION\n")
-	fmt.Fprintf(out, "%s\n\n", long)
-}
-
-func manPrintFlags(out *bytes.Buffer, flags *pflag.FlagSet) {
-	flags.VisitAll(func(flag *pflag.Flag) {
-		if len(flag.Deprecated) > 0 || flag.Hidden {
-			return
-		}
-		format := ""
-		if len(flag.Shorthand) > 0 {
-			format = "**-%s**, **--%s**"
-		} else {
-			format = "%s**--%s**"
-		}
-		if len(flag.NoOptDefVal) > 0 {
-			format = format + "["
-		}
-		if flag.Value.Type() == "string" {
-			// put quotes on the value
-			format = format + "=%q"
-		} else {
-			format = format + "=%s"
-		}
-		if len(flag.NoOptDefVal) > 0 {
-			format = format + "]"
-		}
-		format = format + "\n\t%s\n\n"
-		fmt.Fprintf(out, format, flag.Shorthand, flag.Name, flag.DefValue, flag.Usage)
-	})
-}
-
-func manPrintOptions(out *bytes.Buffer, command *Command) {
-	flags := command.NonInheritedFlags()
-	if flags.HasFlags() {
-		fmt.Fprintf(out, "# OPTIONS\n")
-		manPrintFlags(out, flags)
-		fmt.Fprintf(out, "\n")
-	}
-	flags = command.InheritedFlags()
-	if flags.HasFlags() {
-		fmt.Fprintf(out, "# OPTIONS INHERITED FROM PARENT COMMANDS\n")
-		manPrintFlags(out, flags)
-		fmt.Fprintf(out, "\n")
-	}
-}
-
-func genMarkdown(cmd *Command, header *GenManHeader) []byte {
-	// something like `rootcmd subcmd1 subcmd2`
-	commandName := cmd.CommandPath()
-	// something like `rootcmd-subcmd1-subcmd2`
-	dashCommandName := strings.Replace(commandName, " ", "-", -1)
-
-	fillHeader(header, commandName)
-
-	buf := new(bytes.Buffer)
-
-	short := cmd.Short
-	long := cmd.Long
-	if len(long) == 0 {
-		long = short
-	}
-
-	manPreamble(buf, header, commandName, short, long)
-	manPrintOptions(buf, cmd)
-	if len(cmd.Example) > 0 {
-		fmt.Fprintf(buf, "# EXAMPLE\n")
-		fmt.Fprintf(buf, "```\n%s\n```\n", cmd.Example)
-	}
-	if cmd.hasSeeAlso() {
-		fmt.Fprintf(buf, "# SEE ALSO\n")
-		if cmd.HasParent() {
-			parentPath := cmd.Parent().CommandPath()
-			dashParentPath := strings.Replace(parentPath, " ", "-", -1)
-			fmt.Fprintf(buf, "**%s(%s)**", dashParentPath, header.Section)
-			cmd.VisitParents(func(c *Command) {
-				if c.DisableAutoGenTag {
-					cmd.DisableAutoGenTag = c.DisableAutoGenTag
-				}
-			})
-		}
-		children := cmd.Commands()
-		sort.Sort(byName(children))
-		for i, c := range children {
-			if !c.IsAvailableCommand() || c == cmd.helpCommand {
-				continue
-			}
-			if cmd.HasParent() || i > 0 {
-				fmt.Fprintf(buf, ", ")
-			}
-			fmt.Fprintf(buf, "**%s-%s(%s)**", dashCommandName, c.Name(), header.Section)
-		}
-		fmt.Fprintf(buf, "\n")
-	}
-	if !cmd.DisableAutoGenTag {
-		fmt.Fprintf(buf, "# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006"))
-	}
-	return buf.Bytes()
-}

vendor/github.com/spf13/cobra/md_docs.go

@@ -1,162 +0,0 @@
-//Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package cobra
-
-import (
-	"bytes"
-	"fmt"
-	"os"
-	"sort"
-	"strings"
-	"time"
-)
-
-func printOptions(out *bytes.Buffer, cmd *Command, name string) {
-	flags := cmd.NonInheritedFlags()
-	flags.SetOutput(out)
-	if flags.HasFlags() {
-		fmt.Fprintf(out, "### Options\n\n```\n")
-		flags.PrintDefaults()
-		fmt.Fprintf(out, "```\n\n")
-	}
-
-	parentFlags := cmd.InheritedFlags()
-	parentFlags.SetOutput(out)
-	if parentFlags.HasFlags() {
-		fmt.Fprintf(out, "### Options inherited from parent commands\n\n```\n")
-		parentFlags.PrintDefaults()
-		fmt.Fprintf(out, "```\n\n")
-	}
-}
-
-type byName []*Command
-
-func (s byName) Len() int           { return len(s) }
-func (s byName) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() }
-
-func GenMarkdown(cmd *Command, out *bytes.Buffer) {
-	cmd.GenMarkdown(out)
-}
-
-func (cmd *Command) GenMarkdown(out *bytes.Buffer) {
-	cmd.GenMarkdownCustom(out, func(s string) string { return s })
-}
-
-func GenMarkdownCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string) string) {
-	cmd.GenMarkdownCustom(out, linkHandler)
-}
-
-func (cmd *Command) GenMarkdownCustom(out *bytes.Buffer, linkHandler func(string) string) {
-	name := cmd.CommandPath()
-
-	short := cmd.Short
-	long := cmd.Long
-	if len(long) == 0 {
-		long = short
-	}
-
-	fmt.Fprintf(out, "## %s\n\n", name)
-	fmt.Fprintf(out, "%s\n\n", short)
-	fmt.Fprintf(out, "### Synopsis\n\n")
-	fmt.Fprintf(out, "\n%s\n\n", long)
-
-	if cmd.Runnable() {
-		fmt.Fprintf(out, "```\n%s\n```\n\n", cmd.UseLine())
-	}
-
-	if len(cmd.Example) > 0 {
-		fmt.Fprintf(out, "### Examples\n\n")
-		fmt.Fprintf(out, "```\n%s\n```\n\n", cmd.Example)
-	}
-
-	printOptions(out, cmd, name)
-	if cmd.hasSeeAlso() {
-		fmt.Fprintf(out, "### SEE ALSO\n")
-		if cmd.HasParent() {
-			parent := cmd.Parent()
-			pname := parent.CommandPath()
-			link := pname + ".md"
-			link = strings.Replace(link, " ", "_", -1)
-			fmt.Fprintf(out, "* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short)
-			cmd.VisitParents(func(c *Command) {
-				if c.DisableAutoGenTag {
-					cmd.DisableAutoGenTag = c.DisableAutoGenTag
-				}
-			})
-		}
-
-		children := cmd.Commands()
-		sort.Sort(byName(children))
-
-		for _, child := range children {
-			if !child.IsAvailableCommand() || child == cmd.helpCommand {
-				continue
-			}
-			cname := name + " " + child.Name()
-			link := cname + ".md"
-			link = strings.Replace(link, " ", "_", -1)
-			fmt.Fprintf(out, "* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short)
-		}
-		fmt.Fprintf(out, "\n")
-	}
-	if !cmd.DisableAutoGenTag {
-		fmt.Fprintf(out, "###### Auto generated by spf13/cobra on %s\n", time.Now().Format("2-Jan-2006"))
-	}
-}
-
-func GenMarkdownTree(cmd *Command, dir string) {
-	cmd.GenMarkdownTree(dir)
-}
-
-func (cmd *Command) GenMarkdownTree(dir string) {
-	identity := func(s string) string { return s }
-	emptyStr := func(s string) string { return "" }
-	cmd.GenMarkdownTreeCustom(dir, emptyStr, identity)
-}
-
-func GenMarkdownTreeCustom(cmd *Command, dir string, filePrepender func(string) string, linkHandler func(string) string) {
-	cmd.GenMarkdownTreeCustom(dir, filePrepender, linkHandler)
-}
-
-func (cmd *Command) GenMarkdownTreeCustom(dir string, filePrepender func(string) string, linkHandler func(string) string) {
-	for _, c := range cmd.Commands() {
-		if !c.IsAvailableCommand() || c == cmd.helpCommand {
-			continue
-		}
-		c.GenMarkdownTreeCustom(dir, filePrepender, linkHandler)
-	}
-	out := new(bytes.Buffer)
-
-	cmd.GenMarkdownCustom(out, linkHandler)
-
-	filename := cmd.CommandPath()
-	filename = dir + strings.Replace(filename, " ", "_", -1) + ".md"
-	outFile, err := os.Create(filename)
-	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-	defer outFile.Close()
-	_, err = outFile.WriteString(filePrepender(filename))
-	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-	_, err = outFile.Write(out.Bytes())
-	if err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-}

vendor/github.com/spf13/cobra/zsh_completions.go

@@ -0,0 +1,126 @@
+package cobra
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+// GenZshCompletionFile generates zsh completion file.
+func (c *Command) GenZshCompletionFile(filename string) error {
+	outFile, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer outFile.Close()
+
+	return c.GenZshCompletion(outFile)
+}
+
+// GenZshCompletion generates a zsh completion file and writes to the passed writer.
+func (c *Command) GenZshCompletion(w io.Writer) error {
+	buf := new(bytes.Buffer)
+
+	writeHeader(buf, c)
+	maxDepth := maxDepth(c)
+	writeLevelMapping(buf, maxDepth)
+	writeLevelCases(buf, maxDepth, c)
+
+	_, err := buf.WriteTo(w)
+	return err
+}
+
+func writeHeader(w io.Writer, cmd *Command) {
+	fmt.Fprintf(w, "#compdef %s\n\n", cmd.Name())
+}
+
+func maxDepth(c *Command) int {
+	if len(c.Commands()) == 0 {
+		return 0
+	}
+	maxDepthSub := 0
+	for _, s := range c.Commands() {
+		subDepth := maxDepth(s)
+		if subDepth > maxDepthSub {
+			maxDepthSub = subDepth
+		}
+	}
+	return 1 + maxDepthSub
+}
+
+func writeLevelMapping(w io.Writer, numLevels int) {
+	fmt.Fprintln(w, `_arguments \`)
+	for i := 1; i <= numLevels; i++ {
+		fmt.Fprintf(w, `  '%d: :->level%d' \`, i, i)
+		fmt.Fprintln(w)
+	}
+	fmt.Fprintf(w, `  '%d: :%s'`, numLevels+1, "_files")
+	fmt.Fprintln(w)
+}
+
+func writeLevelCases(w io.Writer, maxDepth int, root *Command) {
+	fmt.Fprintln(w, "case $state in")
+	defer fmt.Fprintln(w, "esac")
+
+	for i := 1; i <= maxDepth; i++ {
+		fmt.Fprintf(w, "  level%d)\n", i)
+		writeLevel(w, root, i)
+		fmt.Fprintln(w, "  ;;")
+	}
+	fmt.Fprintln(w, "  *)")
+	fmt.Fprintln(w, "    _arguments '*: :_files'")
+	fmt.Fprintln(w, "  ;;")
+}
+
+func writeLevel(w io.Writer, root *Command, i int) {
+	fmt.Fprintf(w, "    case $words[%d] in\n", i)
+	defer fmt.Fprintln(w, "    esac")
+
+	commands := filterByLevel(root, i)
+	byParent := groupByParent(commands)
+
+	for p, c := range byParent {
+		names := names(c)
+		fmt.Fprintf(w, "      %s)\n", p)
+		fmt.Fprintf(w, "        _arguments '%d: :(%s)'\n", i, strings.Join(names, " "))
+		fmt.Fprintln(w, "      ;;")
+	}
+	fmt.Fprintln(w, "      *)")
+	fmt.Fprintln(w, "        _arguments '*: :_files'")
+	fmt.Fprintln(w, "      ;;")
+
+}
+
+func filterByLevel(c *Command, l int) []*Command {
+	cs := make([]*Command, 0)
+	if l == 0 {
+		cs = append(cs, c)
+		return cs
+	}
+	for _, s := range c.Commands() {
+		cs = append(cs, filterByLevel(s, l-1)...)
+	}
+	return cs
+}
+
+func groupByParent(commands []*Command) map[string][]*Command {
+	m := make(map[string][]*Command)
+	for _, c := range commands {
+		parent := c.Parent()
+		if parent == nil {
+			continue
+		}
+		m[parent.Name()] = append(m[parent.Name()], c)
+	}
+	return m
+}
+
+func names(commands []*Command) []string {
+	ns := make([]string, len(commands))
+	for i, c := range commands {
+		ns[i] = c.Name()
+	}
+	return ns
+}

vendor/github.com/spf13/pflag/bytes.go

@@ -0,0 +1,105 @@
+package pflag
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strings"
+)
+
+// BytesHex adapts []byte for use as a flag. Value of flag is HEX encoded
+type bytesHexValue []byte
+
+func (bytesHex bytesHexValue) String() string {
+	return fmt.Sprintf("%X", []byte(bytesHex))
+}
+
+func (bytesHex *bytesHexValue) Set(value string) error {
+	bin, err := hex.DecodeString(strings.TrimSpace(value))
+
+	if err != nil {
+		return err
+	}
+
+	*bytesHex = bin
+
+	return nil
+}
+
+func (*bytesHexValue) Type() string {
+	return "bytesHex"
+}
+
+func newBytesHexValue(val []byte, p *[]byte) *bytesHexValue {
+	*p = val
+	return (*bytesHexValue)(p)
+}
+
+func bytesHexConv(sval string) (interface{}, error) {
+
+	bin, err := hex.DecodeString(sval)
+
+	if err == nil {
+		return bin, nil
+	}
+
+	return nil, fmt.Errorf("invalid string being converted to Bytes: %s %s", sval, err)
+}
+
+// GetBytesHex return the []byte value of a flag with the given name
+func (f *FlagSet) GetBytesHex(name string) ([]byte, error) {
+	val, err := f.getFlagType(name, "bytesHex", bytesHexConv)
+
+	if err != nil {
+		return []byte{}, err
+	}
+
+	return val.([]byte), nil
+}
+
+// BytesHexVar defines an []byte flag with specified name, default value, and usage string.
+// The argument p points to an []byte variable in which to store the value of the flag.
+func (f *FlagSet) BytesHexVar(p *[]byte, name string, value []byte, usage string) {
+	f.VarP(newBytesHexValue(value, p), name, "", usage)
+}
+
+// BytesHexVarP is like BytesHexVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BytesHexVarP(p *[]byte, name, shorthand string, value []byte, usage string) {
+	f.VarP(newBytesHexValue(value, p), name, shorthand, usage)
+}
+
+// BytesHexVar defines an []byte flag with specified name, default value, and usage string.
+// The argument p points to an []byte variable in which to store the value of the flag.
+func BytesHexVar(p *[]byte, name string, value []byte, usage string) {
+	CommandLine.VarP(newBytesHexValue(value, p), name, "", usage)
+}
+
+// BytesHexVarP is like BytesHexVar, but accepts a shorthand letter that can be used after a single dash.
+func BytesHexVarP(p *[]byte, name, shorthand string, value []byte, usage string) {
+	CommandLine.VarP(newBytesHexValue(value, p), name, shorthand, usage)
+}
+
+// BytesHex defines an []byte flag with specified name, default value, and usage string.
+// The return value is the address of an []byte variable that stores the value of the flag.
+func (f *FlagSet) BytesHex(name string, value []byte, usage string) *[]byte {
+	p := new([]byte)
+	f.BytesHexVarP(p, name, "", value, usage)
+	return p
+}
+
+// BytesHexP is like BytesHex, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BytesHexP(name, shorthand string, value []byte, usage string) *[]byte {
+	p := new([]byte)
+	f.BytesHexVarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// BytesHex defines an []byte flag with specified name, default value, and usage string.
+// The return value is the address of an []byte variable that stores the value of the flag.
+func BytesHex(name string, value []byte, usage string) *[]byte {
+	return CommandLine.BytesHexP(name, "", value, usage)
+}
+
+// BytesHexP is like BytesHex, but accepts a shorthand letter that can be used after a single dash.
+func BytesHexP(name, shorthand string, value []byte, usage string) *[]byte {
+	return CommandLine.BytesHexP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/count.go

@@ -11,13 +11,13 @@ func newCountValue(val int, p *int) *countValue {
 }
 
 func (i *countValue) Set(s string) error {
-	v, err := strconv.ParseInt(s, 0, 64)
+	// "+1" means that no specific value was passed, so increment
-	// -1 means that no specific value was passed, so increment
+	if s == "+1" {
-	if v == -1 {
 		*i = countValue(*i + 1)
-	} else {
+		return nil
-		*i = countValue(v)
 	}
+	v, err := strconv.ParseInt(s, 0, 0)
+	*i = countValue(v)
 	return err
 }
 
@@ -54,7 +54,7 @@ func (f *FlagSet) CountVar(p *int, name string, usage string) {
 // CountVarP is like CountVar only take a shorthand for the flag name.
 func (f *FlagSet) CountVarP(p *int, name, shorthand string, usage string) {
 	flag := f.VarPF(newCountValue(0, p), name, shorthand, usage)
-	flag.NoOptDefVal = "-1"
+	flag.NoOptDefVal = "+1"
 }
 
 // CountVar like CountVar only the flag is placed on the CommandLine instead of a given flag set

vendor/github.com/spf13/pflag/duration_slice.go

@@ -0,0 +1,128 @@
+package pflag
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// -- durationSlice Value
+type durationSliceValue struct {
+	value   *[]time.Duration
+	changed bool
+}
+
+func newDurationSliceValue(val []time.Duration, p *[]time.Duration) *durationSliceValue {
+	dsv := new(durationSliceValue)
+	dsv.value = p
+	*dsv.value = val
+	return dsv
+}
+
+func (s *durationSliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]time.Duration, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = time.ParseDuration(d)
+		if err != nil {
+			return err
+		}
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *durationSliceValue) Type() string {
+	return "durationSlice"
+}
+
+func (s *durationSliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%s", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func durationSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []time.Duration{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]time.Duration, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = time.ParseDuration(d)
+		if err != nil {
+			return nil, err
+		}
+
+	}
+	return out, nil
+}
+
+// GetDurationSlice returns the []time.Duration value of a flag with the given name
+func (f *FlagSet) GetDurationSlice(name string) ([]time.Duration, error) {
+	val, err := f.getFlagType(name, "durationSlice", durationSliceConv)
+	if err != nil {
+		return []time.Duration{}, err
+	}
+	return val.([]time.Duration), nil
+}
+
+// DurationSliceVar defines a durationSlice flag with specified name, default value, and usage string.
+// The argument p points to a []time.Duration variable in which to store the value of the flag.
+func (f *FlagSet) DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
+	f.VarP(newDurationSliceValue(value, p), name, "", usage)
+}
+
+// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
+	f.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
+}
+
+// DurationSliceVar defines a duration[] flag with specified name, default value, and usage string.
+// The argument p points to a duration[] variable in which to store the value of the flag.
+func DurationSliceVar(p *[]time.Duration, name string, value []time.Duration, usage string) {
+	CommandLine.VarP(newDurationSliceValue(value, p), name, "", usage)
+}
+
+// DurationSliceVarP is like DurationSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func DurationSliceVarP(p *[]time.Duration, name, shorthand string, value []time.Duration, usage string) {
+	CommandLine.VarP(newDurationSliceValue(value, p), name, shorthand, usage)
+}
+
+// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a []time.Duration variable that stores the value of the flag.
+func (f *FlagSet) DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
+	p := []time.Duration{}
+	f.DurationSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
+	p := []time.Duration{}
+	f.DurationSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// DurationSlice defines a []time.Duration flag with specified name, default value, and usage string.
+// The return value is the address of a []time.Duration variable that stores the value of the flag.
+func DurationSlice(name string, value []time.Duration, usage string) *[]time.Duration {
+	return CommandLine.DurationSliceP(name, "", value, usage)
+}
+
+// DurationSliceP is like DurationSlice, but accepts a shorthand letter that can be used after a single dash.
+func DurationSliceP(name, shorthand string, value []time.Duration, usage string) *[]time.Duration {
+	return CommandLine.DurationSliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/flag.go

@@ -101,6 +101,7 @@ package pflag
 import (
 	"bytes"
 	"errors"
+	goflag "flag"
 	"fmt"
 	"io"
 	"os"
@@ -123,6 +124,12 @@ const (
 	PanicOnError
 )
 
+// ParseErrorsWhitelist defines the parsing errors that can be ignored
+type ParseErrorsWhitelist struct {
+	// UnknownFlags will ignore unknown flags errors and continue parsing rest of the flags
+	UnknownFlags bool
+}
+
 // NormalizedName is a flag name that has been normalized according to rules
 // for the FlagSet (e.g. making '-' and '_' equivalent).
 type NormalizedName string
@@ -138,6 +145,9 @@ type FlagSet struct {
 	// help/usage messages.
 	SortFlags bool
 
+	// ParseErrorsWhitelist is used to configure a whitelist of errors
+	ParseErrorsWhitelist ParseErrorsWhitelist
+
 	name              string
 	parsed            bool
 	actual            map[NormalizedName]*Flag
@@ -153,6 +163,8 @@ type FlagSet struct {
 	output            io.Writer // nil means stderr; use out() accessor
 	interspersed      bool      // allow interspersed option/non-option args
 	normalizeNameFunc func(f *FlagSet, name string) NormalizedName
+
+	addedGoFlagSets []*goflag.FlagSet
 }
 
 // A Flag represents the state of a flag.
@@ -202,12 +214,18 @@ func sortFlags(flags map[NormalizedName]*Flag) []*Flag {
 func (f *FlagSet) SetNormalizeFunc(n func(f *FlagSet, name string) NormalizedName) {
 	f.normalizeNameFunc = n
 	f.sortedFormal = f.sortedFormal[:0]
-	for k, v := range f.orderedFormal {
+	for fname, flag := range f.formal {
-		delete(f.formal, NormalizedName(v.Name))
+		nname := f.normalizeFlagName(flag.Name)
-		nname := f.normalizeFlagName(v.Name)
+		if fname == nname {
-		v.Name = string(nname)
+			continue
-		f.formal[nname] = v
+		}
-		f.orderedFormal[k] = v
+		flag.Name = string(nname)
+		delete(f.formal, fname)
+		f.formal[nname] = flag
+		if _, set := f.actual[fname]; set {
+			delete(f.actual, fname)
+			f.actual[nname] = flag
+		}
 	}
 }
 
@@ -440,6 +458,7 @@ func (f *FlagSet) Set(name, value string) error {
 		return fmt.Errorf("invalid argument %q for %q flag: %v", value, flagName, err)
 	}
 
+	if !flag.Changed {
 		if f.actual == nil {
 			f.actual = make(map[NormalizedName]*Flag)
 		}
@@ -447,6 +466,7 @@ func (f *FlagSet) Set(name, value string) error {
 		f.orderedActual = append(f.orderedActual, flag)
 
 		flag.Changed = true
+	}
 
 	if flag.Deprecated != "" {
 		fmt.Fprintf(f.out(), "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
@@ -556,6 +576,14 @@ func UnquoteUsage(flag *Flag) (name string, usage string) {
 		name = "int"
 	case "uint64":
 		name = "uint"
+	case "stringSlice":
+		name = "strings"
+	case "intSlice":
+		name = "ints"
+	case "uintSlice":
+		name = "uints"
+	case "boolSlice":
+		name = "bools"
 	}
 
 	return
@@ -570,11 +598,14 @@ func wrapN(i, slop int, s string) (string, string) {
 		return s, ""
 	}
 
-	w := strings.LastIndexAny(s[:i], " \t")
+	w := strings.LastIndexAny(s[:i], " \t\n")
 	if w <= 0 {
 		return s, ""
 	}
-
+	nlPos := strings.LastIndex(s[:i], "\n")
+	if nlPos > 0 && nlPos < w {
+		return s[:nlPos], s[nlPos+1:]
+	}
 	return s[:w], s[w+1:]
 }
 
@@ -583,7 +614,7 @@ func wrapN(i, slop int, s string) (string, string) {
 // caller). Pass `w` == 0 to do no wrapping
 func wrap(i, w int, s string) string {
 	if w == 0 {
-		return s
+		return strings.Replace(s, "\n", "\n"+strings.Repeat(" ", i), -1)
 	}
 
 	// space between indent i and end of line width w into which
@@ -601,7 +632,7 @@ func wrap(i, w int, s string) string {
 	}
 	// If still not enough space then don't even try to wrap.
 	if wrap < 24 {
-		return s
+		return strings.Replace(s, "\n", r, -1)
 	}
 
 	// Try to avoid short orphan words on the final line, by
@@ -613,14 +644,14 @@ func wrap(i, w int, s string) string {
 	// Handle first line, which is indented by the caller (or the
 	// special case above)
 	l, s = wrapN(wrap, slop, s)
-	r = r + l
+	r = r + strings.Replace(l, "\n", "\n"+strings.Repeat(" ", i), -1)
 
 	// Now wrap the rest
 	for s != "" {
 		var t string
 
 		t, s = wrapN(wrap, slop, s)
-		r = r + "\n" + strings.Repeat(" ", i) + t
+		r = r + "\n" + strings.Repeat(" ", i) + strings.Replace(t, "\n", "\n"+strings.Repeat(" ", i), -1)
 	}
 
 	return r
@@ -660,6 +691,10 @@ func (f *FlagSet) FlagUsagesWrapped(cols int) string {
 				if flag.NoOptDefVal != "true" {
 					line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
 				}
+			case "count":
+				if flag.NoOptDefVal != "+1" {
+					line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
+				}
 			default:
 				line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
 			}
@@ -857,8 +892,10 @@ func VarP(value Value, name, shorthand, usage string) {
 // returns the error.
 func (f *FlagSet) failf(format string, a ...interface{}) error {
 	err := fmt.Errorf(format, a...)
+	if f.errorHandling != ContinueOnError {
 		fmt.Fprintln(f.out(), err)
 		f.usage()
+	}
 	return err
 }
 
@@ -874,6 +911,25 @@ func (f *FlagSet) usage() {
 	}
 }
 
+//--unknown (args will be empty)
+//--unknown --next-flag ... (args will be --next-flag ...)
+//--unknown arg ... (args will be arg ...)
+func stripUnknownFlagValue(args []string) []string {
+	if len(args) == 0 {
+		//--unknown
+		return args
+	}
+
+	first := args[0]
+	if first[0] == '-' {
+		//--unknown --next-flag ...
+		return args
+	}
+
+	//--unknown arg ... (args will be arg ...)
+	return args[1:]
+}
+
 func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []string, err error) {
 	a = args
 	name := s[2:]
@@ -885,14 +941,25 @@ func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []strin
 	split := strings.SplitN(name, "=", 2)
 	name = split[0]
 	flag, exists := f.formal[f.normalizeFlagName(name)]
+
 	if !exists {
-		if name == "help" { // special case for nice help message.
+		switch {
+		case name == "help":
 			f.usage()
 			return a, ErrHelp
+		case f.ParseErrorsWhitelist.UnknownFlags:
+			// --unknown=unknownval arg ...
+			// we do not want to lose arg in this case
+			if len(split) >= 2 {
+				return a, nil
 			}
+
+			return stripUnknownFlagValue(a), nil
+		default:
 			err = f.failf("unknown flag: --%s", name)
 			return
 		}
+	}
 
 	var value string
 	if len(split) == 2 {
@@ -912,6 +979,9 @@ func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []strin
 	}
 
 	err = fn(flag, value)
+	if err != nil {
+		f.failf(err.Error())
+	}
 	return
 }
 
@@ -926,14 +996,26 @@ func (f *FlagSet) parseSingleShortArg(shorthands string, args []string, fn parse
 
 	flag, exists := f.shorthands[c]
 	if !exists {
-		if c == 'h' { // special case for nice help message.
+		switch {
+		case c == 'h':
 			f.usage()
 			err = ErrHelp
 			return
+		case f.ParseErrorsWhitelist.UnknownFlags:
+			// '-f=arg arg ...'
+			// we do not want to lose arg in this case
+			if len(shorthands) > 2 && shorthands[1] == '=' {
+				outShorts = ""
+				return
 			}
+
+			outArgs = stripUnknownFlagValue(outArgs)
+			return
+		default:
 			err = f.failf("unknown shorthand flag: %q in -%s", c, shorthands)
 			return
 		}
+	}
 
 	var value string
 	if len(shorthands) > 2 && shorthands[1] == '=' {
@@ -962,6 +1044,9 @@ func (f *FlagSet) parseSingleShortArg(shorthands string, args []string, fn parse
 	}
 
 	err = fn(flag, value)
+	if err != nil {
+		f.failf(err.Error())
+	}
 	return
 }
 
@@ -1016,6 +1101,11 @@ func (f *FlagSet) parseArgs(args []string, fn parseFunc) (err error) {
 // are defined and before flags are accessed by the program.
 // The return value will be ErrHelp if -help was set but not defined.
 func (f *FlagSet) Parse(arguments []string) error {
+	if f.addedGoFlagSets != nil {
+		for _, goFlagSet := range f.addedGoFlagSets {
+			goFlagSet.Parse(nil)
+		}
+	}
 	f.parsed = true
 
 	if len(arguments) < 0 {
@@ -1034,6 +1124,7 @@ func (f *FlagSet) Parse(arguments []string) error {
 		case ContinueOnError:
 			return err
 		case ExitOnError:
+			fmt.Println(err)
 			os.Exit(2)
 		case PanicOnError:
 			panic(err)

vendor/github.com/spf13/pflag/golangflag.go

@@ -98,4 +98,8 @@ func (f *FlagSet) AddGoFlagSet(newSet *goflag.FlagSet) {
 	newSet.VisitAll(func(goflag *goflag.Flag) {
 		f.AddGoFlag(goflag)
 	})
+	if f.addedGoFlagSets == nil {
+		f.addedGoFlagSets = make([]*goflag.FlagSet, 0)
+	}
+	f.addedGoFlagSets = append(f.addedGoFlagSets, newSet)
 }

vendor/github.com/spf13/pflag/int16.go

@@ -0,0 +1,88 @@
+package pflag
+
+import "strconv"
+
+// -- int16 Value
+type int16Value int16
+
+func newInt16Value(val int16, p *int16) *int16Value {
+	*p = val
+	return (*int16Value)(p)
+}
+
+func (i *int16Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 16)
+	*i = int16Value(v)
+	return err
+}
+
+func (i *int16Value) Type() string {
+	return "int16"
+}
+
+func (i *int16Value) String() string { return strconv.FormatInt(int64(*i), 10) }
+
+func int16Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseInt(sval, 0, 16)
+	if err != nil {
+		return 0, err
+	}
+	return int16(v), nil
+}
+
+// GetInt16 returns the int16 value of a flag with the given name
+func (f *FlagSet) GetInt16(name string) (int16, error) {
+	val, err := f.getFlagType(name, "int16", int16Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int16), nil
+}
+
+// Int16Var defines an int16 flag with specified name, default value, and usage string.
+// The argument p points to an int16 variable in which to store the value of the flag.
+func (f *FlagSet) Int16Var(p *int16, name string, value int16, usage string) {
+	f.VarP(newInt16Value(value, p), name, "", usage)
+}
+
+// Int16VarP is like Int16Var, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int16VarP(p *int16, name, shorthand string, value int16, usage string) {
+	f.VarP(newInt16Value(value, p), name, shorthand, usage)
+}
+
+// Int16Var defines an int16 flag with specified name, default value, and usage string.
+// The argument p points to an int16 variable in which to store the value of the flag.
+func Int16Var(p *int16, name string, value int16, usage string) {
+	CommandLine.VarP(newInt16Value(value, p), name, "", usage)
+}
+
+// Int16VarP is like Int16Var, but accepts a shorthand letter that can be used after a single dash.
+func Int16VarP(p *int16, name, shorthand string, value int16, usage string) {
+	CommandLine.VarP(newInt16Value(value, p), name, shorthand, usage)
+}
+
+// Int16 defines an int16 flag with specified name, default value, and usage string.
+// The return value is the address of an int16 variable that stores the value of the flag.
+func (f *FlagSet) Int16(name string, value int16, usage string) *int16 {
+	p := new(int16)
+	f.Int16VarP(p, name, "", value, usage)
+	return p
+}
+
+// Int16P is like Int16, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Int16P(name, shorthand string, value int16, usage string) *int16 {
+	p := new(int16)
+	f.Int16VarP(p, name, shorthand, value, usage)
+	return p
+}
+
+// Int16 defines an int16 flag with specified name, default value, and usage string.
+// The return value is the address of an int16 variable that stores the value of the flag.
+func Int16(name string, value int16, usage string) *int16 {
+	return CommandLine.Int16P(name, "", value, usage)
+}
+
+// Int16P is like Int16, but accepts a shorthand letter that can be used after a single dash.
+func Int16P(name, shorthand string, value int16, usage string) *int16 {
+	return CommandLine.Int16P(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/string_array.go

@@ -52,7 +52,7 @@ func (f *FlagSet) GetStringArray(name string) ([]string, error) {
 
 // StringArrayVar defines a string flag with specified name, default value, and usage string.
 // The argument p points to a []string variable in which to store the values of the multiple flags.
-// The value of each argument will not try to be separated by comma
+// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
 func (f *FlagSet) StringArrayVar(p *[]string, name string, value []string, usage string) {
 	f.VarP(newStringArrayValue(value, p), name, "", usage)
 }
@@ -64,7 +64,7 @@ func (f *FlagSet) StringArrayVarP(p *[]string, name, shorthand string, value []s
 
 // StringArrayVar defines a string flag with specified name, default value, and usage string.
 // The argument p points to a []string variable in which to store the value of the flag.
-// The value of each argument will not try to be separated by comma
+// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
 func StringArrayVar(p *[]string, name string, value []string, usage string) {
 	CommandLine.VarP(newStringArrayValue(value, p), name, "", usage)
 }
@@ -76,7 +76,7 @@ func StringArrayVarP(p *[]string, name, shorthand string, value []string, usage
 
 // StringArray defines a string flag with specified name, default value, and usage string.
 // The return value is the address of a []string variable that stores the value of the flag.
-// The value of each argument will not try to be separated by comma
+// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
 func (f *FlagSet) StringArray(name string, value []string, usage string) *[]string {
 	p := []string{}
 	f.StringArrayVarP(&p, name, "", value, usage)
@@ -92,7 +92,7 @@ func (f *FlagSet) StringArrayP(name, shorthand string, value []string, usage str
 
 // StringArray defines a string flag with specified name, default value, and usage string.
 // The return value is the address of a []string variable that stores the value of the flag.
-// The value of each argument will not try to be separated by comma
+// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
 func StringArray(name string, value []string, usage string) *[]string {
 	return CommandLine.StringArrayP(name, "", value, usage)
 }

vendor/github.com/spf13/pflag/string_slice.go

@@ -82,6 +82,11 @@ func (f *FlagSet) GetStringSlice(name string) ([]string, error) {
 
 // StringSliceVar defines a string flag with specified name, default value, and usage string.
 // The argument p points to a []string variable in which to store the value of the flag.
+// Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
+// For example:
+//   --ss="v1,v2" -ss="v3"
+// will result in
+//   []string{"v1", "v2", "v3"}
 func (f *FlagSet) StringSliceVar(p *[]string, name string, value []string, usage string) {
 	f.VarP(newStringSliceValue(value, p), name, "", usage)
 }
@@ -93,6 +98,11 @@ func (f *FlagSet) StringSliceVarP(p *[]string, name, shorthand string, value []s
 
 // StringSliceVar defines a string flag with specified name, default value, and usage string.
 // The argument p points to a []string variable in which to store the value of the flag.
+// Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
+// For example:
+//   --ss="v1,v2" -ss="v3"
+// will result in
+//   []string{"v1", "v2", "v3"}
 func StringSliceVar(p *[]string, name string, value []string, usage string) {
 	CommandLine.VarP(newStringSliceValue(value, p), name, "", usage)
 }
@@ -104,6 +114,11 @@ func StringSliceVarP(p *[]string, name, shorthand string, value []string, usage
 
 // StringSlice defines a string flag with specified name, default value, and usage string.
 // The return value is the address of a []string variable that stores the value of the flag.
+// Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
+// For example:
+//   --ss="v1,v2" -ss="v3"
+// will result in
+//   []string{"v1", "v2", "v3"}
 func (f *FlagSet) StringSlice(name string, value []string, usage string) *[]string {
 	p := []string{}
 	f.StringSliceVarP(&p, name, "", value, usage)
@@ -119,6 +134,11 @@ func (f *FlagSet) StringSliceP(name, shorthand string, value []string, usage str
 
 // StringSlice defines a string flag with specified name, default value, and usage string.
 // The return value is the address of a []string variable that stores the value of the flag.
+// Compared to StringArray flags, StringSlice flags take comma-separated value as arguments and split them accordingly.
+// For example:
+//   --ss="v1,v2" -ss="v3"
+// will result in
+//   []string{"v1", "v2", "v3"}
 func StringSlice(name string, value []string, usage string) *[]string {
 	return CommandLine.StringSliceP(name, "", value, usage)
 }