chore(cli): upgrade urfave/cli to v2 version (#85)

chore(cli): upgrade urfave/cli to v2 version

Co-authored-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Andrew Thornton <art27@cantab.net>

cmd/flags.go

@@ -7,7 +7,7 @@ package cmd
 import (
 	"log"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // create global variables for global Flags to simplify
@@ -52,8 +52,8 @@ var OutputFlag = cli.StringFlag{
 // subcommand to work around issue and provide --login and --output:
 // https://github.com/urfave/cli/issues/585
 var LoginOutputFlags = []cli.Flag{
-	LoginFlag,
+	&LoginFlag,
-	OutputFlag,
+	&OutputFlag,
 }
 
 // LoginRepoFlags defines login and repo flags that should
@@ -61,9 +61,9 @@ var LoginOutputFlags = []cli.Flag{
 // the subcommand to work around issue and provide --login and --repo:
 // https://github.com/urfave/cli/issues/585
 var LoginRepoFlags = []cli.Flag{
-	LoginFlag,
+	&LoginFlag,
-	RepoFlag,
+	&RepoFlag,
-	RemoteFlag,
+	&RemoteFlag,
 }
 
 // AllDefaultFlags defines flags that should be available
@@ -71,8 +71,8 @@ var LoginRepoFlags = []cli.Flag{
 // to work around issue and provide --login, --repo and --output:
 // https://github.com/urfave/cli/issues/585
 var AllDefaultFlags = append([]cli.Flag{
-	RepoFlag,
+	&RepoFlag,
-	RemoteFlag,
+	&RemoteFlag,
 }, LoginOutputFlags...)
 
 // initCommand returns repository and *Login based on flags

cmd/issues.go

@@ -13,7 +13,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdIssues represents to login a gitea server.
@@ -22,9 +22,9 @@ var CmdIssues = cli.Command{
 	Usage:       "List and create issues",
 	Description: `List and create issues`,
 	Action:      runIssues,
-	Subcommands: []cli.Command{
+	Subcommands: []*cli.Command{
-		CmdIssuesList,
+		&CmdIssuesList,
-		CmdIssuesCreate,
+		&CmdIssuesCreate,
 	},
 	Flags: AllDefaultFlags,
 }
@@ -124,11 +124,11 @@ var CmdIssuesCreate = cli.Command{
 	Description: `Create an issue on repository`,
 	Action:      runIssuesCreate,
 	Flags: append([]cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "title, t",
 			Usage: "issue title to create",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "body, b",
 			Usage: "issue body to create",
 		},

cmd/labels.go

@@ -14,7 +14,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdLabels represents to operate repositories' labels.
@@ -23,13 +23,13 @@ var CmdLabels = cli.Command{
 	Usage:       "Manage issue labels",
 	Description: `Manage issue labels`,
 	Action:      runLabels,
-	Subcommands: []cli.Command{
+	Subcommands: []*cli.Command{
-		CmdLabelCreate,
+		&CmdLabelCreate,
-		CmdLabelUpdate,
+		&CmdLabelUpdate,
-		CmdLabelDelete,
+		&CmdLabelDelete,
 	},
 	Flags: append([]cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "save, s",
 			Usage: "Save all the labels as a file",
 		},
@@ -94,19 +94,19 @@ var CmdLabelCreate = cli.Command{
 	Description: `Create a label`,
 	Action:      runLabelCreate,
 	Flags: []cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "name",
 			Usage: "label name",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "color",
 			Usage: "label color value",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "description",
 			Usage: "label description",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "file",
 			Usage: "indicate a label file",
 		},
@@ -186,19 +186,19 @@ var CmdLabelUpdate = cli.Command{
 	Description: `Update a label`,
 	Action:      runLabelUpdate,
 	Flags: []cli.Flag{
-		cli.IntFlag{
+		&cli.IntFlag{
 			Name:  "id",
 			Usage: "label id",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "name",
 			Usage: "label name",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "color",
 			Usage: "label color value",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "description",
 			Usage: "label description",
 		},
@@ -246,7 +246,7 @@ var CmdLabelDelete = cli.Command{
 	Description: `Delete a label`,
 	Action:      runLabelCreate,
 	Flags: []cli.Flag{
-		cli.IntFlag{
+		&cli.IntFlag{
 			Name:  "id",
 			Usage: "label id",
 		},

cmd/login.go

@@ -13,7 +13,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdLogin represents to login a gitea server.
@@ -21,9 +21,9 @@ var CmdLogin = cli.Command{
 	Name:        "login",
 	Usage:       "Log in to a Gitea server",
 	Description: `Log in to a Gitea server`,
-	Subcommands: []cli.Command{
+	Subcommands: []*cli.Command{
-		cmdLoginList,
+		&cmdLoginList,
-		cmdLoginAdd,
+		&cmdLoginAdd,
 	},
 }
 
@@ -33,23 +33,23 @@ var cmdLoginAdd = cli.Command{
 	Usage:       "Add a Gitea login",
 	Description: `Add a Gitea login`,
 	Flags: []cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "name, n",
 			Usage: "Login name",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:    "url, u",
 			Value:   "https://try.gitea.io",
-			EnvVar: "GITEA_SERVER_URL",
+			EnvVars: []string{"GITEA_SERVER_URL"},
 			Usage:   "Server URL",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:    "token, t",
 			Value:   "",
-			EnvVar: "GITEA_SERVER_TOKEN",
+			EnvVars: []string{"GITEA_SERVER_TOKEN"},
 			Usage:   "Access token. Can be obtained from Settings > Applications",
 		},
-		cli.BoolFlag{
+		&cli.BoolFlag{
 			Name:  "insecure, i",
 			Usage: "Disable TLS verification",
 		},

cmd/logout.go

@@ -9,7 +9,7 @@ import (
 	"log"
 	"os"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdLogout represents to logout a gitea server.
@@ -19,7 +19,7 @@ var CmdLogout = cli.Command{
 	Description: `Log out from a Gitea server`,
 	Action:      runLogout,
 	Flags: []cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "name, n",
 			Usage: "Login name to remove",
 		},

cmd/pulls.go

@@ -10,7 +10,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdPulls represents to login a gitea server.

cmd/releases.go

@@ -11,7 +11,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdReleases represents to login a gitea server.
@@ -20,8 +20,8 @@ var CmdReleases = cli.Command{
 	Usage:       "Create releases",
 	Description: `Create releases`,
 	Action:      runReleases,
-	Subcommands: []cli.Command{
+	Subcommands: []*cli.Command{
-		CmdReleaseCreate,
+		&CmdReleaseCreate,
 	},
 	Flags: AllDefaultFlags,
 }
@@ -71,31 +71,31 @@ var CmdReleaseCreate = cli.Command{
 	Description: `Create a release`,
 	Action:      runReleaseCreate,
 	Flags: append([]cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "tag",
 			Usage: "Tag name",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "target",
 			Usage: "Target refs, branch name or commit id",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "title, t",
 			Usage: "Release title",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "note, n",
 			Usage: "Release notes",
 		},
-		cli.BoolFlag{
+		&cli.BoolFlag{
 			Name:  "draft, d",
 			Usage: "Is a draft",
 		},
-		cli.BoolFlag{
+		&cli.BoolFlag{
 			Name:  "prerelease, p",
 			Usage: "Is a pre-release",
 		},
-		cli.StringSliceFlag{
+		&cli.StringSliceFlag{
 			Name:  "asset, a",
 			Usage: "List of files to attach",
 		},

cmd/repos.go

@@ -9,7 +9,7 @@ import (
 
 	"code.gitea.io/sdk/gitea"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // CmdRepos represents to login a gitea server.
@@ -18,8 +18,8 @@ var CmdRepos = cli.Command{
 	Usage:       "Operate with repositories",
 	Description: `Operate with repositories`,
 	Action:      runReposList,
-	Subcommands: []cli.Command{
+	Subcommands: []*cli.Command{
-		CmdReposList,
+		&CmdReposList,
 	},
 	Flags: LoginOutputFlags,
 }
@@ -31,15 +31,15 @@ var CmdReposList = cli.Command{
 	Description: `List available repositories`,
 	Action:      runReposList,
 	Flags: append([]cli.Flag{
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "mode",
 			Usage: "Filter listed repositories based on mode, optional - fork, mirror, source",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "org",
 			Usage: "Filter listed repositories based on organization, optional",
 		},
-		cli.StringFlag{
+		&cli.StringFlag{
 			Name:  "user",
 			Usage: "Filter listed repositories absed on user, optional",
 		},

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/olekukonko/tablewriter v0.0.1
 	github.com/stretchr/testify v1.4.0
-	github.com/urfave/cli v1.22.2
+	github.com/urfave/cli/v2 v2.1.1
 	gopkg.in/src-d/go-git.v4 v4.13.1
 	gopkg.in/yaml.v2 v2.2.7 // indirect
 )

go.sum

@@ -62,8 +62,8 @@ github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/urfave/cli v1.22.2 h1:gsqYFH8bb9ekPA12kRo0hfjngWQjkJPlN9R0N78BoUo=
+github.com/urfave/cli/v2 v2.1.1 h1:Qt8FeAtxE/vfdrLmR3rxR6JRE0RoVmbXu8+6kZtYU4k=
-github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
+github.com/urfave/cli/v2 v2.1.1/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
 github.com/xanzy/ssh-agent v0.2.1 h1:TCbipTQL2JiiCprBWx9frJ2eJlCYT00NmctrHxVAr70=
 github.com/xanzy/ssh-agent v0.2.1/go.mod h1:mLlQY/MoOhWBj+gOGMQkOeiEvkx+8pJSI+0Bx9h2kr4=
 golang.org/x/crypto v0.0.0-20190219172222-a4c6cb3142f2/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=

main.go

@@ -13,7 +13,7 @@ import (
 	"code.gitea.io/tea/cmd"
 	"code.gitea.io/tea/modules/setting"
 
-	"github.com/urfave/cli"
+	"github.com/urfave/cli/v2"
 )
 
 // Version holds the current Gitea version
@@ -33,14 +33,14 @@ func main() {
 	app.Usage = "Command line tool to interact with Gitea"
 	app.Description = ``
 	app.Version = Version + formatBuiltWith(Tags)
-	app.Commands = []cli.Command{
+	app.Commands = []*cli.Command{
-		cmd.CmdLogin,
+		&cmd.CmdLogin,
-		cmd.CmdLogout,
+		&cmd.CmdLogout,
-		cmd.CmdIssues,
+		&cmd.CmdIssues,
-		cmd.CmdPulls,
+		&cmd.CmdPulls,
-		cmd.CmdReleases,
+		&cmd.CmdReleases,
-		cmd.CmdRepos,
+		&cmd.CmdRepos,
-		cmd.CmdLabels,
+		&cmd.CmdLabels,
 	}
 	app.EnableBashCompletion = true
 	err := app.Run(os.Args)

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

@@ -1,35 +0,0 @@
-language: go
-sudo: false
-dist: bionic
-osx_image: xcode10
-go:
-  - 1.11.x
-  - 1.12.x
-  - 1.13.x
-
-os:
-  - linux
-  - osx
-
-env:
-  GO111MODULE=on
-  GOPROXY=https://proxy.golang.org
-
-cache:
-  directories:
-    - node_modules
-
-before_script:
-  - go get github.com/urfave/gfmrun/cmd/gfmrun
-  - go get golang.org/x/tools/cmd/goimports
-  - npm install markdown-toc
-  - go mod tidy
-
-script:
-  - go run build.go vet
-  - go run build.go test
-  - go run build.go gfmrun docs/v1/manual.md
-  - go run build.go toc docs/v1/manual.md
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash)

vendor/github.com/urfave/cli/category.go

@@ -1,44 +0,0 @@
-package cli
-
-// CommandCategories is a slice of *CommandCategory.
-type CommandCategories []*CommandCategory
-
-// CommandCategory is a category containing commands.
-type CommandCategory struct {
-	Name     string
-	Commands Commands
-}
-
-func (c CommandCategories) Less(i, j int) bool {
-	return lexicographicLess(c[i].Name, c[j].Name)
-}
-
-func (c CommandCategories) Len() int {
-	return len(c)
-}
-
-func (c CommandCategories) Swap(i, j int) {
-	c[i], c[j] = c[j], c[i]
-}
-
-// AddCommand adds a command to a category.
-func (c CommandCategories) AddCommand(category string, command Command) CommandCategories {
-	for _, commandCategory := range c {
-		if commandCategory.Name == category {
-			commandCategory.Commands = append(commandCategory.Commands, command)
-			return c
-		}
-	}
-	return append(c, &CommandCategory{Name: category, Commands: []Command{command}})
-}
-
-// VisibleCommands returns a slice of the Commands with Hidden=false
-func (c *CommandCategory) VisibleCommands() []Command {
-	ret := []Command{}
-	for _, command := range c.Commands {
-		if !command.Hidden {
-			ret = append(ret, command)
-		}
-	}
-	return ret
-}

vendor/github.com/urfave/cli/context.go

@@ -1,339 +0,0 @@
-package cli
-
-import (
-	"errors"
-	"flag"
-	"fmt"
-	"os"
-	"reflect"
-	"strings"
-	"syscall"
-)
-
-// Context is a type that is passed through to
-// each Handler action in a cli application. Context
-// can be used to retrieve context-specific Args and
-// parsed command-line options.
-type Context struct {
-	App           *App
-	Command       Command
-	shellComplete bool
-	flagSet       *flag.FlagSet
-	setFlags      map[string]bool
-	parentContext *Context
-}
-
-// NewContext creates a new context. For use in when invoking an App or Command action.
-func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context {
-	c := &Context{App: app, flagSet: set, parentContext: parentCtx}
-
-	if parentCtx != nil {
-		c.shellComplete = parentCtx.shellComplete
-	}
-
-	return c
-}
-
-// NumFlags returns the number of flags set
-func (c *Context) NumFlags() int {
-	return c.flagSet.NFlag()
-}
-
-// Set sets a context flag to a value.
-func (c *Context) Set(name, value string) error {
-	c.setFlags = nil
-	return c.flagSet.Set(name, value)
-}
-
-// GlobalSet sets a context flag to a value on the global flagset
-func (c *Context) GlobalSet(name, value string) error {
-	globalContext(c).setFlags = nil
-	return globalContext(c).flagSet.Set(name, value)
-}
-
-// IsSet determines if the flag was actually set
-func (c *Context) IsSet(name string) bool {
-	if c.setFlags == nil {
-		c.setFlags = make(map[string]bool)
-
-		c.flagSet.Visit(func(f *flag.Flag) {
-			c.setFlags[f.Name] = true
-		})
-
-		c.flagSet.VisitAll(func(f *flag.Flag) {
-			if _, ok := c.setFlags[f.Name]; ok {
-				return
-			}
-			c.setFlags[f.Name] = false
-		})
-
-		// XXX hack to support IsSet for flags with EnvVar
-		//
-		// There isn't an easy way to do this with the current implementation since
-		// whether a flag was set via an environment variable is very difficult to
-		// determine here. Instead, we intend to introduce a backwards incompatible
-		// change in version 2 to add `IsSet` to the Flag interface to push the
-		// responsibility closer to where the information required to determine
-		// whether a flag is set by non-standard means such as environment
-		// variables is available.
-		//
-		// See https://github.com/urfave/cli/issues/294 for additional discussion
-		flags := c.Command.Flags
-		if c.Command.Name == "" { // cannot == Command{} since it contains slice types
-			if c.App != nil {
-				flags = c.App.Flags
-			}
-		}
-		for _, f := range flags {
-			eachName(f.GetName(), func(name string) {
-				if isSet, ok := c.setFlags[name]; isSet || !ok {
-					return
-				}
-
-				val := reflect.ValueOf(f)
-				if val.Kind() == reflect.Ptr {
-					val = val.Elem()
-				}
-
-				filePathValue := val.FieldByName("FilePath")
-				if filePathValue.IsValid() {
-					eachName(filePathValue.String(), func(filePath string) {
-						if _, err := os.Stat(filePath); err == nil {
-							c.setFlags[name] = true
-							return
-						}
-					})
-				}
-
-				envVarValue := val.FieldByName("EnvVar")
-				if envVarValue.IsValid() {
-					eachName(envVarValue.String(), func(envVar string) {
-						envVar = strings.TrimSpace(envVar)
-						if _, ok := syscall.Getenv(envVar); ok {
-							c.setFlags[name] = true
-							return
-						}
-					})
-				}
-			})
-		}
-	}
-
-	return c.setFlags[name]
-}
-
-// GlobalIsSet determines if the global flag was actually set
-func (c *Context) GlobalIsSet(name string) bool {
-	ctx := c
-	if ctx.parentContext != nil {
-		ctx = ctx.parentContext
-	}
-
-	for ; ctx != nil; ctx = ctx.parentContext {
-		if ctx.IsSet(name) {
-			return true
-		}
-	}
-	return false
-}
-
-// FlagNames returns a slice of flag names used in this context.
-func (c *Context) FlagNames() (names []string) {
-	for _, f := range c.Command.Flags {
-		name := strings.Split(f.GetName(), ",")[0]
-		if name == "help" {
-			continue
-		}
-		names = append(names, name)
-	}
-	return
-}
-
-// GlobalFlagNames returns a slice of global flag names used by the app.
-func (c *Context) GlobalFlagNames() (names []string) {
-	for _, f := range c.App.Flags {
-		name := strings.Split(f.GetName(), ",")[0]
-		if name == "help" || name == "version" {
-			continue
-		}
-		names = append(names, name)
-	}
-	return
-}
-
-// Parent returns the parent context, if any
-func (c *Context) Parent() *Context {
-	return c.parentContext
-}
-
-// value returns the value of the flag coressponding to `name`
-func (c *Context) value(name string) interface{} {
-	return c.flagSet.Lookup(name).Value.(flag.Getter).Get()
-}
-
-// Args contains apps console arguments
-type Args []string
-
-// Args returns the command line arguments associated with the context.
-func (c *Context) Args() Args {
-	args := Args(c.flagSet.Args())
-	return args
-}
-
-// NArg returns the number of the command line arguments.
-func (c *Context) NArg() int {
-	return len(c.Args())
-}
-
-// Get returns the nth argument, or else a blank string
-func (a Args) Get(n int) string {
-	if len(a) > n {
-		return a[n]
-	}
-	return ""
-}
-
-// First returns the first argument, or else a blank string
-func (a Args) First() string {
-	return a.Get(0)
-}
-
-// Tail returns the rest of the arguments (not the first one)
-// or else an empty string slice
-func (a Args) Tail() []string {
-	if len(a) >= 2 {
-		return []string(a)[1:]
-	}
-	return []string{}
-}
-
-// Present checks if there are any arguments present
-func (a Args) Present() bool {
-	return len(a) != 0
-}
-
-// Swap swaps arguments at the given indexes
-func (a Args) Swap(from, to int) error {
-	if from >= len(a) || to >= len(a) {
-		return errors.New("index out of range")
-	}
-	a[from], a[to] = a[to], a[from]
-	return nil
-}
-
-func globalContext(ctx *Context) *Context {
-	if ctx == nil {
-		return nil
-	}
-
-	for {
-		if ctx.parentContext == nil {
-			return ctx
-		}
-		ctx = ctx.parentContext
-	}
-}
-
-func lookupGlobalFlagSet(name string, ctx *Context) *flag.FlagSet {
-	if ctx.parentContext != nil {
-		ctx = ctx.parentContext
-	}
-	for ; ctx != nil; ctx = ctx.parentContext {
-		if f := ctx.flagSet.Lookup(name); f != nil {
-			return ctx.flagSet
-		}
-	}
-	return nil
-}
-
-func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) {
-	switch ff.Value.(type) {
-	case *StringSlice:
-	default:
-		_ = set.Set(name, ff.Value.String())
-	}
-}
-
-func normalizeFlags(flags []Flag, set *flag.FlagSet) error {
-	visited := make(map[string]bool)
-	set.Visit(func(f *flag.Flag) {
-		visited[f.Name] = true
-	})
-	for _, f := range flags {
-		parts := strings.Split(f.GetName(), ",")
-		if len(parts) == 1 {
-			continue
-		}
-		var ff *flag.Flag
-		for _, name := range parts {
-			name = strings.Trim(name, " ")
-			if visited[name] {
-				if ff != nil {
-					return errors.New("Cannot use two forms of the same flag: " + name + " " + ff.Name)
-				}
-				ff = set.Lookup(name)
-			}
-		}
-		if ff == nil {
-			continue
-		}
-		for _, name := range parts {
-			name = strings.Trim(name, " ")
-			if !visited[name] {
-				copyFlag(name, ff, set)
-			}
-		}
-	}
-	return nil
-}
-
-type requiredFlagsErr interface {
-	error
-	getMissingFlags() []string
-}
-
-type errRequiredFlags struct {
-	missingFlags []string
-}
-
-func (e *errRequiredFlags) Error() string {
-	numberOfMissingFlags := len(e.missingFlags)
-	if numberOfMissingFlags == 1 {
-		return fmt.Sprintf("Required flag %q not set", e.missingFlags[0])
-	}
-	joinedMissingFlags := strings.Join(e.missingFlags, ", ")
-	return fmt.Sprintf("Required flags %q not set", joinedMissingFlags)
-}
-
-func (e *errRequiredFlags) getMissingFlags() []string {
-	return e.missingFlags
-}
-
-func checkRequiredFlags(flags []Flag, context *Context) requiredFlagsErr {
-	var missingFlags []string
-	for _, f := range flags {
-		if rf, ok := f.(RequiredFlag); ok && rf.IsRequired() {
-			var flagPresent bool
-			var flagName string
-			for _, key := range strings.Split(f.GetName(), ",") {
-				if len(key) > 1 {
-					flagName = key
-				}
-
-				if context.IsSet(strings.TrimSpace(key)) {
-					flagPresent = true
-				}
-			}
-
-			if !flagPresent && flagName != "" {
-				missingFlags = append(missingFlags, flagName)
-			}
-		}
-	}
-
-	if len(missingFlags) != 0 {
-		return &errRequiredFlags{missingFlags: missingFlags}
-	}
-
-	return nil
-}

vendor/github.com/urfave/cli/flag_bool_t.go

@@ -1,110 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"strconv"
-)
-
-// BoolTFlag is a flag with type bool that is true by default
-type BoolTFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	FilePath    string
-	Required    bool
-	Hidden      bool
-	Destination *bool
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f BoolTFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f BoolTFlag) GetName() string {
-	return f.Name
-}
-
-// IsRequired returns whether or not the flag is required
-func (f BoolTFlag) IsRequired() bool {
-	return f.Required
-}
-
-// TakesValue returns true of the flag takes a value, otherwise false
-func (f BoolTFlag) TakesValue() bool {
-	return false
-}
-
-// GetUsage returns the usage string for the flag
-func (f BoolTFlag) GetUsage() string {
-	return f.Usage
-}
-
-// GetValue returns the flags value as string representation and an empty
-// string if the flag takes no value at all.
-func (f BoolTFlag) GetValue() string {
-	return ""
-}
-
-// BoolT looks up the value of a local BoolTFlag, returns
-// false if not found
-func (c *Context) BoolT(name string) bool {
-	return lookupBoolT(name, c.flagSet)
-}
-
-// GlobalBoolT looks up the value of a global BoolTFlag, returns
-// false if not found
-func (c *Context) GlobalBoolT(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupBoolT(name, fs)
-	}
-	return false
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolTFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := true
-
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		if envVal == "" {
-			val = false
-		} else {
-			envValBool, err := strconv.ParseBool(envVal)
-			if err != nil {
-				return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-			}
-			val = envValBool
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
-func lookupBoolT(name string, set *flag.FlagSet) bool {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseBool(f.Value.String())
-		if err != nil {
-			return false
-		}
-		return parsed
-	}
-	return false
-}

vendor/github.com/urfave/cli/flag_int64_slice.go

@@ -1,141 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type Int64Slice []int64
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *Int64Slice) Set(value string) error {
-	tmp, err := strconv.ParseInt(value, 10, 64)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *Int64Slice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *Int64Slice) Value() []int64 {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *Int64Slice) Get() interface{} {
-	return *f
-}
-
-// Int64SliceFlag is a flag with type *Int64Slice
-type Int64SliceFlag struct {
-	Name     string
-	Usage    string
-	EnvVar   string
-	FilePath string
-	Required bool
-	Hidden   bool
-	Value    *Int64Slice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Int64SliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Int64SliceFlag) GetName() string {
-	return f.Name
-}
-
-// IsRequired returns whether or not the flag is required
-func (f Int64SliceFlag) IsRequired() bool {
-	return f.Required
-}
-
-// TakesValue returns true of the flag takes a value, otherwise false
-func (f Int64SliceFlag) TakesValue() bool {
-	return true
-}
-
-// GetUsage returns the usage string for the flag
-func (f Int64SliceFlag) GetUsage() string {
-	return f.Usage
-}
-
-// GetValue returns the flags value as string representation and an empty
-// string if the flag takes no value at all.
-func (f Int64SliceFlag) GetValue() string {
-	if f.Value != nil {
-		return f.Value.String()
-	}
-	return ""
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		newVal := &Int64Slice{}
-		for _, s := range strings.Split(envVal, ",") {
-			s = strings.TrimSpace(s)
-			if err := newVal.Set(s); err != nil {
-				return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err)
-			}
-		}
-		if f.Value == nil {
-			f.Value = newVal
-		} else {
-			*f.Value = *newVal
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &Int64Slice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-	return nil
-}
-
-// Int64Slice looks up the value of a local Int64SliceFlag, returns
-// nil if not found
-func (c *Context) Int64Slice(name string) []int64 {
-	return lookupInt64Slice(name, c.flagSet)
-}
-
-// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns
-// nil if not found
-func (c *Context) GlobalInt64Slice(name string) []int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt64Slice(name, fs)
-	}
-	return nil
-}
-
-func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}

vendor/github.com/urfave/cli/flag_int_slice.go

@@ -1,142 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type IntSlice []int
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *IntSlice) Set(value string) error {
-	tmp, err := strconv.Atoi(value)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *IntSlice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *IntSlice) Value() []int {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *IntSlice) Get() interface{} {
-	return *f
-}
-
-// IntSliceFlag is a flag with type *IntSlice
-type IntSliceFlag struct {
-	Name     string
-	Usage    string
-	EnvVar   string
-	FilePath string
-	Required bool
-	Hidden   bool
-	Value    *IntSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f IntSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f IntSliceFlag) GetName() string {
-	return f.Name
-}
-
-// IsRequired returns whether or not the flag is required
-func (f IntSliceFlag) IsRequired() bool {
-	return f.Required
-}
-
-// TakesValue returns true of the flag takes a value, otherwise false
-func (f IntSliceFlag) TakesValue() bool {
-	return true
-}
-
-// GetUsage returns the usage string for the flag
-func (f IntSliceFlag) GetUsage() string {
-	return f.Usage
-}
-
-// GetValue returns the flags value as string representation and an empty
-// string if the flag takes no value at all.
-func (f IntSliceFlag) GetValue() string {
-	if f.Value != nil {
-		return f.Value.String()
-	}
-	return ""
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f IntSliceFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		newVal := &IntSlice{}
-		for _, s := range strings.Split(envVal, ",") {
-			s = strings.TrimSpace(s)
-			if err := newVal.Set(s); err != nil {
-				return fmt.Errorf("could not parse %s as int slice value for flag %s: %s", envVal, f.Name, err)
-			}
-		}
-		if f.Value == nil {
-			f.Value = newVal
-		} else {
-			*f.Value = *newVal
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &IntSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// IntSlice looks up the value of a local IntSliceFlag, returns
-// nil if not found
-func (c *Context) IntSlice(name string) []int {
-	return lookupIntSlice(name, c.flagSet)
-}
-
-// GlobalIntSlice looks up the value of a global IntSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalIntSlice(name string) []int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupIntSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupIntSlice(name string, set *flag.FlagSet) []int {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}

vendor/github.com/urfave/cli/flag_string_slice.go

@@ -1,138 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"strings"
-)
-
-// StringSlice is an opaque type for []string to satisfy flag.Value and flag.Getter
-type StringSlice []string
-
-// Set appends the string value to the list of values
-func (f *StringSlice) Set(value string) error {
-	*f = append(*f, value)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *StringSlice) String() string {
-	return fmt.Sprintf("%s", *f)
-}
-
-// Value returns the slice of strings set by this flag
-func (f *StringSlice) Value() []string {
-	return *f
-}
-
-// Get returns the slice of strings set by this flag
-func (f *StringSlice) Get() interface{} {
-	return *f
-}
-
-// StringSliceFlag is a flag with type *StringSlice
-type StringSliceFlag struct {
-	Name      string
-	Usage     string
-	EnvVar    string
-	FilePath  string
-	Required  bool
-	Hidden    bool
-	TakesFile bool
-	Value     *StringSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f StringSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f StringSliceFlag) GetName() string {
-	return f.Name
-}
-
-// IsRequired returns whether or not the flag is required
-func (f StringSliceFlag) IsRequired() bool {
-	return f.Required
-}
-
-// TakesValue returns true of the flag takes a value, otherwise false
-func (f StringSliceFlag) TakesValue() bool {
-	return true
-}
-
-// GetUsage returns the usage string for the flag
-func (f StringSliceFlag) GetUsage() string {
-	return f.Usage
-}
-
-// GetValue returns the flags value as string representation and an empty
-// string if the flag takes no value at all.
-func (f StringSliceFlag) GetValue() string {
-	if f.Value != nil {
-		return f.Value.String()
-	}
-	return ""
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f StringSliceFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		newVal := &StringSlice{}
-		for _, s := range strings.Split(envVal, ",") {
-			s = strings.TrimSpace(s)
-			if err := newVal.Set(s); err != nil {
-				return fmt.Errorf("could not parse %s as string value for flag %s: %s", envVal, f.Name, err)
-			}
-		}
-		if f.Value == nil {
-			f.Value = newVal
-		} else {
-			*f.Value = *newVal
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &StringSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// StringSlice looks up the value of a local StringSliceFlag, returns
-// nil if not found
-func (c *Context) StringSlice(name string) []string {
-	return lookupStringSlice(name, c.flagSet)
-}
-
-// GlobalStringSlice looks up the value of a global StringSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalStringSlice(name string) []string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupStringSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupStringSlice(name string, set *flag.FlagSet) []string {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*StringSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}

vendor/github.com/urfave/cli/v2/.gitignore

@@ -1,3 +1,5 @@
 *.coverprofile
+*.orig
 node_modules/
 vendor
+.idea

vendor/github.com/urfave/cli/v2/README.md

@@ -1,7 +1,6 @@
 cli
 ===
 
-[![Build Status](https://travis-ci.org/urfave/cli.svg?branch=master)](https://travis-ci.org/urfave/cli)
 [![Windows Build Status](https://ci.appveyor.com/api/projects/status/rtgk5xufi932pb2v?svg=true)](https://ci.appveyor.com/project/urfave/cli)
 
 [![GoDoc](https://godoc.org/github.com/urfave/cli?status.svg)](https://godoc.org/github.com/urfave/cli)
@@ -15,15 +14,44 @@ applications in an expressive way.
 
 ## Usage Documentation
 
-Usage documentation exists for each major version
+Usage documentation exists for each major version. Don't know what version you're on? You're probably using the version from the `master` branch, which is currently `v2`.
 
+- `v2` - [./docs/v2/manual.md](./docs/v2/manual.md)
 - `v1` - [./docs/v1/manual.md](./docs/v1/manual.md)
-- `v2` - 🚧 documentation for `v2` is WIP 🚧
 
 ## Installation
 
-Make sure you have a working Go environment.  Go version 1.10+ is supported.  [See
+Make sure you have a working Go environment.  Go version 1.11+ is supported. [See the install instructions for Go](http://golang.org/doc/install.html).
-the install instructions for Go](http://golang.org/doc/install.html).
+
+Go Modules are strongly recommended when using this package. [See the go blog guide on using Go Modules](https://blog.golang.org/using-go-modules).
+
+### Using `v2` releases
+
+```
+$ GO111MODULE=on go get github.com/urfave/cli/v2
+```
+
+```go
+...
+import (
+  "github.com/urfave/cli/v2" // imports as package "cli"
+)
+...
+```
+
+### Using `v1` releases
+
+```
+$ GO111MODULE=on go get github.com/urfave/cli
+```
+
+```go
+...
+import (
+  "github.com/urfave/cli"
+)
+...
+```
 
 ### GOPATH
 
@@ -36,35 +64,5 @@ export PATH=$PATH:$GOPATH/bin
 ### Supported platforms
 
 cli is tested against multiple versions of Go on Linux, and against the latest
-released version of Go on OS X and Windows.  For full details, see
+released version of Go on OS X and Windows. This project uses Github Actions for
-[`./.travis.yml`](./.travis.yml) and [`./appveyor.yml`](./appveyor.yml).
+builds. For more build info, please look at the [./.github/workflows/cli.yml](https://github.com/urfave/cli/blob/master/.github/workflows/cli.yml).
-
-### Using `v1` releases
-
-```
-$ go get github.com/urfave/cli
-```
-
-```go
-...
-import (
-  "github.com/urfave/cli"
-)
-...
-```
-
-### Using `v2` releases
-
-**Warning**: `v2` is in a pre-release state.
-
-```
-$ go get github.com/urfave/cli.v2
-```
-
-```go
-...
-import (
-  "github.com/urfave/cli.v2" // imports as package "cli"
-)
-...
-```

vendor/github.com/urfave/cli/v2/app.go

@@ -1,23 +1,21 @@
 package cli
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
+	"reflect"
 	"sort"
 	"time"
 )
 
 var (
-	changeLogURL            = "https://github.com/urfave/cli/blob/master/CHANGELOG.md"
+	changeLogURL            = "https://github.com/urfave/cli/blob/master/docs/CHANGELOG.md"
 	appActionDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL)
-	// unused variable. commented for now. will remove in future if agreed upon by everyone
-	//runAndExitOnErrorDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-runandexitonerror", changeLogURL)
-
 	contactSysadmin         = "This is an error in the application.  Please contact the distributor of this application if this is not you."
-
 	errInvalidActionType    = NewExitError("ERROR invalid Action type. "+
 		fmt.Sprintf("Must be `func(*Context`)` or `func(*Context) error).  %s", contactSysadmin)+
 		fmt.Sprintf("See %s", appActionDeprecationURL), 2)
@@ -41,7 +39,7 @@ type App struct {
 	// Description of the program
 	Description string
 	// List of commands to execute
-	Commands []Command
+	Commands []*Command
 	// List of flags to parse
 	Flags []Flag
 	// Boolean to enable bash completion commands
@@ -50,9 +48,9 @@ type App struct {
 	HideHelp bool
 	// Boolean to hide built-in version flag and the VERSION section of help
 	HideVersion bool
-	// Populate on app startup, only gettable through method Categories()
+	// categories contains the categorized commands and is populated on app startup
 	categories CommandCategories
-	// An action to execute when the bash-completion flag is set
+	// An action to execute when the shell completion flag is set
 	BashComplete BashCompleteFunc
 	// An action to execute before any subcommands are run, but after the context is ready
 	// If a non-nil error is returned, no subcommands are run
@@ -60,12 +58,8 @@ type App struct {
 	// An action to execute after any subcommands are run, but after the subcommand has finished
 	// It is run even if Action() panics
 	After AfterFunc
-
 	// The action to execute when no subcommands are specified
-	// Expects a `cli.ActionFunc` but will accept the *deprecated* signature of `func(*cli.Context) {}`
+	Action ActionFunc
-	// *Note*: support for the deprecated `Action` signature will be removed in a future version
-	Action interface{}
-
 	// Execute this function if the proper command cannot be found
 	CommandNotFound CommandNotFoundFunc
 	// Execute this function if an usage error occurs
@@ -73,13 +67,9 @@ type App struct {
 	// Compilation date
 	Compiled time.Time
 	// List of all authors who contributed
-	Authors []Author
+	Authors []*Author
 	// Copyright of the binary if any
 	Copyright string
-	// Name of Author (Note: Use App.Authors, this is deprecated)
-	Author string
-	// Email of Author (Note: Use App.Authors, this is deprecated)
-	Email string
 	// Writer writer to write output to
 	Writer io.Writer
 	// ErrWriter writes error output
@@ -96,7 +86,7 @@ type App struct {
 	// render custom help text by setting this variable.
 	CustomAppHelpTemplate string
 	// Boolean to enable short-option handling so user can combine several
-	// single-character bool arguements into one
+	// single-character bool arguments into one
 	// i.e. foobar -o -v -> foobar -ov
 	UseShortOptionHandling bool
 
@@ -121,7 +111,6 @@ func NewApp() *App {
 		HelpName:     filepath.Base(os.Args[0]),
 		Usage:        "A new cli application",
 		UsageText:    "",
-		Version:      "0.0.0",
 		BashComplete: DefaultAppComplete,
 		Action:       helpCommand.Action,
 		Compiled:     compileTime(),
@@ -139,22 +128,52 @@ func (a *App) Setup() {
 
 	a.didSetup = true
 
-	if a.Author != "" || a.Email != "" {
+	if a.Name == "" {
-		a.Authors = append(a.Authors, Author{Name: a.Author, Email: a.Email})
+		a.Name = filepath.Base(os.Args[0])
 	}
 
-	var newCmds []Command
+	if a.HelpName == "" {
+		a.HelpName = filepath.Base(os.Args[0])
+	}
+
+	if a.Usage == "" {
+		a.Usage = "A new cli application"
+	}
+
+	if a.Version == "" {
+		a.HideVersion = true
+	}
+
+	if a.BashComplete == nil {
+		a.BashComplete = DefaultAppComplete
+	}
+
+	if a.Action == nil {
+		a.Action = helpCommand.Action
+	}
+
+	if a.Compiled == (time.Time{}) {
+		a.Compiled = compileTime()
+	}
+
+	if a.Writer == nil {
+		a.Writer = os.Stdout
+	}
+
+	var newCommands []*Command
+
 	for _, c := range a.Commands {
 		if c.HelpName == "" {
 			c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name)
 		}
-		newCmds = append(newCmds, c)
+		newCommands = append(newCommands, c)
 	}
-	a.Commands = newCmds
+	a.Commands = newCommands
 
 	if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-		a.Commands = append(a.Commands, helpCommand)
+		a.appendCommand(helpCommand)
-		if (HelpFlag != BoolFlag{}) {
+
+		if HelpFlag != nil {
 			a.appendFlag(HelpFlag)
 		}
 	}
@@ -163,11 +182,11 @@ func (a *App) Setup() {
 		a.appendFlag(VersionFlag)
 	}
 
-	a.categories = CommandCategories{}
+	a.categories = newCommandCategories()
 	for _, command := range a.Commands {
-		a.categories = a.categories.AddCommand(command.Category, command)
+		a.categories.AddCommand(command.Category, command)
 	}
-	sort.Sort(a.categories)
+	sort.Sort(a.categories.(*commandCategories))
 
 	if a.Metadata == nil {
 		a.Metadata = make(map[string]interface{})
@@ -189,6 +208,13 @@ func (a *App) useShortOptionHandling() bool {
 // Run is the entry point to the cli app. Parses the arguments slice and routes
 // to the proper flag/args combination
 func (a *App) Run(arguments []string) (err error) {
+	return a.RunContext(context.Background(), arguments)
+}
+
+// RunContext is like Run except it takes a Context that will be
+// passed to its commands and sub-commands. Through this, you can
+// propagate timeouts and cancellation requests
+func (a *App) RunContext(ctx context.Context, arguments []string) (err error) {
 	a.Setup()
 
 	// handle the completion flag separately from the flagset since
@@ -204,9 +230,9 @@ func (a *App) Run(arguments []string) (err error) {
 		return err
 	}
 
-	err = parseIter(set, a, arguments[1:])
+	err = parseIter(set, a, arguments[1:], shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
-	context := NewContext(a, set, nil)
+	context := NewContext(a, set, &Context{Context: ctx})
 	if nerr != nil {
 		_, _ = fmt.Fprintln(a.Writer, nerr)
 		_ = ShowAppHelp(context)
@@ -249,7 +275,7 @@ func (a *App) Run(arguments []string) (err error) {
 		defer func() {
 			if afterErr := a.After(context); afterErr != nil {
 				if err != nil {
-					err = NewMultiError(err, afterErr)
+					err = newMultiError(err, afterErr)
 				} else {
 					err = afterErr
 				}
@@ -282,7 +308,7 @@ func (a *App) Run(arguments []string) (err error) {
 	}
 
 	// Run default Action
-	err = HandleAction(a.Action, context)
+	err = a.Action(context)
 
 	a.handleExitCoder(context, err)
 	return err
@@ -303,17 +329,20 @@ func (a *App) RunAndExitOnError() {
 // RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() to
 // generate command-specific flags
 func (a *App) RunAsSubcommand(ctx *Context) (err error) {
+	a.Setup()
+
 	// append help to commands
 	if len(a.Commands) > 0 {
 		if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-			a.Commands = append(a.Commands, helpCommand)
+			a.appendCommand(helpCommand)
-			if (HelpFlag != BoolFlag{}) {
+
+			if HelpFlag != nil {
 				a.appendFlag(HelpFlag)
 			}
 		}
 	}
 
-	newCmds := []Command{}
+	var newCmds []*Command
 	for _, c := range a.Commands {
 		if c.HelpName == "" {
 			c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name)
@@ -327,7 +356,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 		return err
 	}
 
-	err = parseIter(set, a, ctx.Args().Tail())
+	err = parseIter(set, a, ctx.Args().Tail(), ctx.shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
 	context := NewContext(a, set, ctx)
 
@@ -379,7 +408,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 			if afterErr != nil {
 				a.handleExitCoder(context, err)
 				if err != nil {
-					err = NewMultiError(err, afterErr)
+					err = newMultiError(err, afterErr)
 				} else {
 					err = afterErr
 				}
@@ -406,7 +435,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	}
 
 	// Run default Action
-	err = HandleAction(a.Action, context)
+	err = a.Action(context)
 
 	a.handleExitCoder(context, err)
 	return err
@@ -416,29 +445,22 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 func (a *App) Command(name string) *Command {
 	for _, c := range a.Commands {
 		if c.HasName(name) {
-			return &c
+			return c
 		}
 	}
 
 	return nil
 }
 
-// Categories returns a slice containing all the categories with the commands they contain
-func (a *App) Categories() CommandCategories {
-	return a.categories
-}
-
 // VisibleCategories returns a slice of categories and commands that are
 // Hidden=false
-func (a *App) VisibleCategories() []*CommandCategory {
+func (a *App) VisibleCategories() []CommandCategory {
-	ret := []*CommandCategory{}
+	ret := []CommandCategory{}
-	for _, category := range a.categories {
+	for _, category := range a.categories.Categories() {
-		if visible := func() *CommandCategory {
+		if visible := func() CommandCategory {
-			for _, command := range category.Commands {
+			if len(category.VisibleCommands()) > 0 {
-				if !command.Hidden {
 				return category
 			}
-			}
 			return nil
 		}(); visible != nil {
 			ret = append(ret, visible)
@@ -448,8 +470,8 @@ func (a *App) VisibleCategories() []*CommandCategory {
 }
 
 // VisibleCommands returns a slice of the Commands with Hidden=false
-func (a *App) VisibleCommands() []Command {
+func (a *App) VisibleCommands() []*Command {
-	var ret []Command
+	var ret []*Command
 	for _, command := range a.Commands {
 		if !command.Hidden {
 			ret = append(ret, command)
@@ -465,7 +487,7 @@ func (a *App) VisibleFlags() []Flag {
 
 func (a *App) hasFlag(flag Flag) bool {
 	for _, f := range a.Flags {
-		if flag == f {
+		if reflect.DeepEqual(flag, f) {
 			return true
 		}
 	}
@@ -482,9 +504,15 @@ func (a *App) errWriter() io.Writer {
 	return a.ErrWriter
 }
 
-func (a *App) appendFlag(flag Flag) {
+func (a *App) appendFlag(fl Flag) {
-	if !a.hasFlag(flag) {
+	if !hasFlag(a.Flags, fl) {
-		a.Flags = append(a.Flags, flag)
+		a.Flags = append(a.Flags, fl)
+	}
+}
+
+func (a *App) appendCommand(c *Command) {
+	if !hasCommand(a.Commands, c) {
+		a.Commands = append(a.Commands, c)
 	}
 }
 
@@ -503,7 +531,7 @@ type Author struct {
 }
 
 // String makes Author comply to the Stringer interface, to allow an easy print in the templating process
-func (a Author) String() string {
+func (a *Author) String() string {
 	e := ""
 	if a.Email != "" {
 		e = " <" + a.Email + ">"

vendor/github.com/urfave/cli/v2/appveyor.yml

@@ -20,7 +20,7 @@ install:
   - go version
   - go env
   - go get github.com/urfave/gfmrun/cmd/gfmrun
-  - go mod vendor
+  - go mod tidy
 
 build_script:
   - go run build.go vet

vendor/github.com/urfave/cli/v2/args.go

@@ -0,0 +1,54 @@
+package cli
+
+type Args interface {
+	// Get returns the nth argument, or else a blank string
+	Get(n int) string
+	// First returns the first argument, or else a blank string
+	First() string
+	// Tail returns the rest of the arguments (not the first one)
+	// or else an empty string slice
+	Tail() []string
+	// Len returns the length of the wrapped slice
+	Len() int
+	// Present checks if there are any arguments present
+	Present() bool
+	// Slice returns a copy of the internal slice
+	Slice() []string
+}
+
+type args []string
+
+func (a *args) Get(n int) string {
+	if len(*a) > n {
+		return (*a)[n]
+	}
+	return ""
+}
+
+func (a *args) First() string {
+	return a.Get(0)
+}
+
+func (a *args) Tail() []string {
+	if a.Len() >= 2 {
+		tail := []string((*a)[1:])
+		ret := make([]string, len(tail))
+		copy(ret, tail)
+		return ret
+	}
+	return []string{}
+}
+
+func (a *args) Len() int {
+	return len(*a)
+}
+
+func (a *args) Present() bool {
+	return a.Len() != 0
+}
+
+func (a *args) Slice() []string {
+	ret := make([]string, len(*a))
+	copy(ret, *a)
+	return ret
+}

vendor/github.com/urfave/cli/v2/category.go

@@ -0,0 +1,79 @@
+package cli
+
+// CommandCategories interface allows for category manipulation
+type CommandCategories interface {
+	// AddCommand adds a command to a category, creating a new category if necessary.
+	AddCommand(category string, command *Command)
+	// categories returns a copy of the category slice
+	Categories() []CommandCategory
+}
+
+type commandCategories []*commandCategory
+
+func newCommandCategories() CommandCategories {
+	ret := commandCategories([]*commandCategory{})
+	return &ret
+}
+
+func (c *commandCategories) Less(i, j int) bool {
+	return lexicographicLess((*c)[i].Name(), (*c)[j].Name())
+}
+
+func (c *commandCategories) Len() int {
+	return len(*c)
+}
+
+func (c *commandCategories) Swap(i, j int) {
+	(*c)[i], (*c)[j] = (*c)[j], (*c)[i]
+}
+
+func (c *commandCategories) AddCommand(category string, command *Command) {
+	for _, commandCategory := range []*commandCategory(*c) {
+		if commandCategory.name == category {
+			commandCategory.commands = append(commandCategory.commands, command)
+			return
+		}
+	}
+	newVal := append(*c,
+		&commandCategory{name: category, commands: []*Command{command}})
+	*c = newVal
+}
+
+func (c *commandCategories) Categories() []CommandCategory {
+	ret := make([]CommandCategory, len(*c))
+	for i, cat := range *c {
+		ret[i] = cat
+	}
+	return ret
+}
+
+// CommandCategory is a category containing commands.
+type CommandCategory interface {
+	// Name returns the category name string
+	Name() string
+	// VisibleCommands returns a slice of the Commands with Hidden=false
+	VisibleCommands() []*Command
+}
+
+type commandCategory struct {
+	name     string
+	commands []*Command
+}
+
+func (c *commandCategory) Name() string {
+	return c.name
+}
+
+func (c *commandCategory) VisibleCommands() []*Command {
+	if c.commands == nil {
+		c.commands = []*Command{}
+	}
+
+	var ret []*Command
+	for _, command := range c.commands {
+		if !command.Hidden {
+			ret = append(ret, command)
+		}
+	}
+	return ret
+}

vendor/github.com/urfave/cli/v2/cli.go

@@ -2,17 +2,18 @@
 // Go applications. cli is designed to be easy to understand and write, the most simple
 // cli application can be written as follows:
 //   func main() {
-//     cli.NewApp().Run(os.Args)
+//     (&cli.App{}).Run(os.Args)
 //   }
 //
 // Of course this application does not do much, so let's make this an actual application:
 //   func main() {
-//     app := cli.NewApp()
+//     app := &cli.App{
-//     app.Name = "greet"
+//			 Name: "greet",
-//     app.Usage = "say a greeting"
+//			 Usage: "say a greeting",
-//     app.Action = func(c *cli.Context) error {
+//			 Action: func(c *cli.Context) error {
-//       println("Greetings")
+//				 fmt.Println("Greetings")
 //				 return nil
+//			 },
 //		 }
 //
 //     app.Run(os.Args)

vendor/github.com/urfave/cli/v2/command.go

@@ -11,8 +11,6 @@ import (
 type Command struct {
 	// The name of the command
 	Name string
-	// short name of the command. Typically one character (deprecated, use `Aliases`)
-	ShortName string
 	// A list of aliases for the command
 	Aliases []string
 	// A short description of the usage of this command
@@ -34,23 +32,15 @@ type Command struct {
 	// It is run even if Action() panics
 	After AfterFunc
 	// The function to call when this command is invoked
-	Action interface{}
+	Action ActionFunc
-	// TODO: replace `Action: interface{}` with `Action: ActionFunc` once some kind
-	// of deprecation period has passed, maybe?
-
 	// Execute this function if a usage error occurs.
 	OnUsageError OnUsageErrorFunc
 	// List of child commands
-	Subcommands Commands
+	Subcommands []*Command
 	// List of flags to parse
 	Flags []Flag
 	// Treat all flags as normal arguments if true
 	SkipFlagParsing bool
-	// Skip argument reordering which attempts to move flags before arguments,
-	// but only works if all flags appear after all arguments. This behavior was
-	// removed n version 2 since it only works under specific conditions so we
-	// backport here by exposing it as an option for compatibility.
-	SkipArgReorder bool
 	// Boolean to hide built-in help command
 	HideHelp bool
 	// Boolean to hide this command from help or completion
@@ -70,7 +60,9 @@ type Command struct {
 	CustomHelpTemplate string
 }
 
-type CommandsByName []Command
+type Commands []*Command
+
+type CommandsByName []*Command
 
 func (c CommandsByName) Len() int {
 	return len(c)
@@ -86,35 +78,29 @@ func (c CommandsByName) Swap(i, j int) {
 
 // FullName returns the full name of the command.
 // For subcommands this ensures that parent commands are part of the command path
-func (c Command) FullName() string {
+func (c *Command) FullName() string {
 	if c.commandNamePath == nil {
 		return c.Name
 	}
 	return strings.Join(c.commandNamePath, " ")
 }
 
-// Commands is a slice of Command
-type Commands []Command
-
 // Run invokes the command given the context, parses ctx.Args() to generate command-specific flags
-func (c Command) Run(ctx *Context) (err error) {
+func (c *Command) Run(ctx *Context) (err error) {
 	if len(c.Subcommands) > 0 {
 		return c.startApp(ctx)
 	}
 
-	if !c.HideHelp && (HelpFlag != BoolFlag{}) {
+	if !c.HideHelp && HelpFlag != nil {
 		// append help to flags
-		c.Flags = append(
+		c.appendFlag(HelpFlag)
-			c.Flags,
-			HelpFlag,
-		)
 	}
 
 	if ctx.App.UseShortOptionHandling {
 		c.UseShortOptionHandling = true
 	}
 
-	set, err := c.parseFlags(ctx.Args().Tail())
+	set, err := c.parseFlags(ctx.Args(), ctx.shellComplete)
 
 	context := NewContext(ctx.App, set, ctx)
 	context.Command = c
@@ -124,7 +110,7 @@ func (c Command) Run(ctx *Context) (err error) {
 
 	if err != nil {
 		if c.OnUsageError != nil {
-			err := c.OnUsageError(context, err, false)
+			err = c.OnUsageError(context, err, false)
 			context.App.handleExitCoder(context, err)
 			return err
 		}
@@ -150,7 +136,7 @@ func (c Command) Run(ctx *Context) (err error) {
 			if afterErr != nil {
 				context.App.handleExitCoder(context, err)
 				if err != nil {
-					err = NewMultiError(err, afterErr)
+					err = newMultiError(err, afterErr)
 				} else {
 					err = afterErr
 				}
@@ -171,7 +157,8 @@ func (c Command) Run(ctx *Context) (err error) {
 		c.Action = helpSubcommand.Action
 	}
 
-	err = HandleAction(c.Action, context)
+	context.Command = c
+	err = c.Action(context)
 
 	if err != nil {
 		context.App.handleExitCoder(context, err)
@@ -179,26 +166,25 @@ func (c Command) Run(ctx *Context) (err error) {
 	return err
 }
 
-func (c *Command) parseFlags(args Args) (*flag.FlagSet, error) {
+func (c *Command) newFlagSet() (*flag.FlagSet, error) {
+	return flagSet(c.Name, c.Flags)
+}
+
+func (c *Command) useShortOptionHandling() bool {
+	return c.UseShortOptionHandling
+}
+
+func (c *Command) parseFlags(args Args, shellComplete bool) (*flag.FlagSet, error) {
+	set, err := c.newFlagSet()
+	if err != nil {
+		return nil, err
+	}
+
 	if c.SkipFlagParsing {
-		set, err := c.newFlagSet()
+		return set, set.Parse(append([]string{"--"}, args.Tail()...))
-		if err != nil {
-			return nil, err
 	}
 
-		return set, set.Parse(append([]string{"--"}, args...))
+	err = parseIter(set, c, args.Tail(), shellComplete)
-	}
-
-	if !c.SkipArgReorder {
-		args = reorderArgs(c.Flags, args)
-	}
-
-	set, err := c.newFlagSet()
-	if err != nil {
-		return nil, err
-	}
-
-	err = parseIter(set, c, args)
 	if err != nil {
 		return nil, err
 	}
@@ -211,96 +197,13 @@ func (c *Command) parseFlags(args Args) (*flag.FlagSet, error) {
 	return set, nil
 }
 
-func (c *Command) newFlagSet() (*flag.FlagSet, error) {
-	return flagSet(c.Name, c.Flags)
-}
-
-func (c *Command) useShortOptionHandling() bool {
-	return c.UseShortOptionHandling
-}
-
-// reorderArgs moves all flags (via reorderedArgs) before the rest of
-// the arguments (remainingArgs) as this is what flag expects.
-func reorderArgs(commandFlags []Flag, args []string) []string {
-	var remainingArgs, reorderedArgs []string
-
-	nextIndexMayContainValue := false
-	for i, arg := range args {
-
-		// dont reorder any args after a --
-		// read about -- here:
-		// https://unix.stackexchange.com/questions/11376/what-does-double-dash-mean-also-known-as-bare-double-dash
-		if arg == "--" {
-			remainingArgs = append(remainingArgs, args[i:]...)
-			break
-
-			// checks if this arg is a value that should be re-ordered next to its associated flag
-		} else if nextIndexMayContainValue && !strings.HasPrefix(arg, "-") {
-			nextIndexMayContainValue = false
-			reorderedArgs = append(reorderedArgs, arg)
-
-			// checks if this is an arg that should be re-ordered
-		} else if argIsFlag(commandFlags, arg) {
-			// we have determined that this is a flag that we should re-order
-			reorderedArgs = append(reorderedArgs, arg)
-			// if this arg does not contain a "=", then the next index may contain the value for this flag
-			nextIndexMayContainValue = !strings.Contains(arg, "=")
-
-			// simply append any remaining args
-		} else {
-			remainingArgs = append(remainingArgs, arg)
-		}
-	}
-
-	return append(reorderedArgs, remainingArgs...)
-}
-
-// argIsFlag checks if an arg is one of our command flags
-func argIsFlag(commandFlags []Flag, arg string) bool {
-	// checks if this is just a `-`, and so definitely not a flag
-	if arg == "-" {
-		return false
-	}
-	// flags always start with a -
-	if !strings.HasPrefix(arg, "-") {
-		return false
-	}
-	// this line turns `--flag` into `flag`
-	if strings.HasPrefix(arg, "--") {
-		arg = strings.Replace(arg, "-", "", 2)
-	}
-	// this line turns `-flag` into `flag`
-	if strings.HasPrefix(arg, "-") {
-		arg = strings.Replace(arg, "-", "", 1)
-	}
-	// this line turns `flag=value` into `flag`
-	arg = strings.Split(arg, "=")[0]
-	// look through all the flags, to see if the `arg` is one of our flags
-	for _, flag := range commandFlags {
-		for _, key := range strings.Split(flag.GetName(), ",") {
-			key := strings.TrimSpace(key)
-			if key == arg {
-				return true
-			}
-		}
-	}
-	// return false if this arg was not one of our flags
-	return false
-}
-
 // Names returns the names including short names and aliases.
-func (c Command) Names() []string {
+func (c *Command) Names() []string {
-	names := []string{c.Name}
+	return append([]string{c.Name}, c.Aliases...)
-
-	if c.ShortName != "" {
-		names = append(names, c.ShortName)
-	}
-
-	return append(names, c.Aliases...)
 }
 
-// HasName returns true if Command.Name or Command.ShortName matches given name
+// HasName returns true if Command.Name matches given name
-func (c Command) HasName(name string) bool {
+func (c *Command) HasName(name string) bool {
 	for _, n := range c.Names() {
 		if n == name {
 			return true
@@ -309,12 +212,12 @@ func (c Command) HasName(name string) bool {
 	return false
 }
 
-func (c Command) startApp(ctx *Context) error {
+func (c *Command) startApp(ctx *Context) error {
-	app := NewApp()
+	app := &App{
-	app.Metadata = ctx.App.Metadata
+		Metadata: ctx.App.Metadata,
-	app.ExitErrHandler = ctx.App.ExitErrHandler
+		Name:     fmt.Sprintf("%s %s", ctx.App.Name, c.Name),
-	// set the name and usage
+	}
-	app.Name = fmt.Sprintf("%s %s", ctx.App.Name, c.Name)
+
 	if c.HelpName == "" {
 		app.HelpName = c.HelpName
 	} else {
@@ -337,18 +240,17 @@ func (c Command) startApp(ctx *Context) error {
 	app.Version = ctx.App.Version
 	app.HideVersion = ctx.App.HideVersion
 	app.Compiled = ctx.App.Compiled
-	app.Author = ctx.App.Author
-	app.Email = ctx.App.Email
 	app.Writer = ctx.App.Writer
 	app.ErrWriter = ctx.App.ErrWriter
+	app.ExitErrHandler = ctx.App.ExitErrHandler
 	app.UseShortOptionHandling = ctx.App.UseShortOptionHandling
 
-	app.categories = CommandCategories{}
+	app.categories = newCommandCategories()
 	for _, command := range c.Subcommands {
-		app.categories = app.categories.AddCommand(command.Category, command)
+		app.categories.AddCommand(command.Category, command)
 	}
 
-	sort.Sort(app.categories)
+	sort.Sort(app.categories.(*commandCategories))
 
 	// bash completion
 	app.EnableBashCompletion = ctx.App.EnableBashCompletion
@@ -374,6 +276,22 @@ func (c Command) startApp(ctx *Context) error {
 }
 
 // VisibleFlags returns a slice of the Flags with Hidden=false
-func (c Command) VisibleFlags() []Flag {
+func (c *Command) VisibleFlags() []Flag {
 	return visibleFlags(c.Flags)
 }
+
+func (c *Command) appendFlag(fl Flag) {
+	if !hasFlag(c.Flags, fl) {
+		c.Flags = append(c.Flags, fl)
+	}
+}
+
+func hasCommand(commands []*Command, command *Command) bool {
+	for _, existing := range commands {
+		if command == existing {
+			return true
+		}
+	}
+
+	return false
+}

vendor/github.com/urfave/cli/v2/context.go

@@ -0,0 +1,274 @@
+package cli
+
+import (
+	"context"
+	"errors"
+	"flag"
+	"fmt"
+	"strings"
+)
+
+// Context is a type that is passed through to
+// each Handler action in a cli application. Context
+// can be used to retrieve context-specific args and
+// parsed command-line options.
+type Context struct {
+	context.Context
+	App           *App
+	Command       *Command
+	shellComplete bool
+	setFlags      map[string]bool
+	flagSet       *flag.FlagSet
+	parentContext *Context
+}
+
+// NewContext creates a new context. For use in when invoking an App or Command action.
+func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context {
+	c := &Context{App: app, flagSet: set, parentContext: parentCtx}
+	if parentCtx != nil {
+		c.Context = parentCtx.Context
+		c.shellComplete = parentCtx.shellComplete
+		if parentCtx.flagSet == nil {
+			parentCtx.flagSet = &flag.FlagSet{}
+		}
+	}
+
+	c.Command = &Command{}
+
+	if c.Context == nil {
+		c.Context = context.Background()
+	}
+
+	return c
+}
+
+// NumFlags returns the number of flags set
+func (c *Context) NumFlags() int {
+	return c.flagSet.NFlag()
+}
+
+// Set sets a context flag to a value.
+func (c *Context) Set(name, value string) error {
+	return c.flagSet.Set(name, value)
+}
+
+// IsSet determines if the flag was actually set
+func (c *Context) IsSet(name string) bool {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		if fs := lookupFlagSet(name, c); fs != nil {
+			isSet := false
+			fs.Visit(func(f *flag.Flag) {
+				if f.Name == name {
+					isSet = true
+				}
+			})
+			if isSet {
+				return true
+			}
+		}
+
+		f := lookupFlag(name, c)
+		if f == nil {
+			return false
+		}
+
+		return f.IsSet()
+	}
+
+	return false
+}
+
+// LocalFlagNames returns a slice of flag names used in this context.
+func (c *Context) LocalFlagNames() []string {
+	var names []string
+	c.flagSet.Visit(makeFlagNameVisitor(&names))
+	return names
+}
+
+// FlagNames returns a slice of flag names used by the this context and all of
+// its parent contexts.
+func (c *Context) FlagNames() []string {
+	var names []string
+	for _, ctx := range c.Lineage() {
+		ctx.flagSet.Visit(makeFlagNameVisitor(&names))
+	}
+	return names
+}
+
+// Lineage returns *this* context and all of its ancestor contexts in order from
+// child to parent
+func (c *Context) Lineage() []*Context {
+	var lineage []*Context
+
+	for cur := c; cur != nil; cur = cur.parentContext {
+		lineage = append(lineage, cur)
+	}
+
+	return lineage
+}
+
+// Value returns the value of the flag corresponding to `name`
+func (c *Context) Value(name string) interface{} {
+	return c.flagSet.Lookup(name).Value.(flag.Getter).Get()
+}
+
+// Args returns the command line arguments associated with the context.
+func (c *Context) Args() Args {
+	ret := args(c.flagSet.Args())
+	return &ret
+}
+
+// NArg returns the number of the command line arguments.
+func (c *Context) NArg() int {
+	return c.Args().Len()
+}
+
+func lookupFlag(name string, ctx *Context) Flag {
+	for _, c := range ctx.Lineage() {
+		if c.Command == nil {
+			continue
+		}
+
+		for _, f := range c.Command.Flags {
+			for _, n := range f.Names() {
+				if n == name {
+					return f
+				}
+			}
+		}
+	}
+
+	if ctx.App != nil {
+		for _, f := range ctx.App.Flags {
+			for _, n := range f.Names() {
+				if n == name {
+					return f
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+func lookupFlagSet(name string, ctx *Context) *flag.FlagSet {
+	for _, c := range ctx.Lineage() {
+		if f := c.flagSet.Lookup(name); f != nil {
+			return c.flagSet
+		}
+	}
+
+	return nil
+}
+
+func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) {
+	switch ff.Value.(type) {
+	case Serializer:
+		_ = set.Set(name, ff.Value.(Serializer).Serialize())
+	default:
+		_ = set.Set(name, ff.Value.String())
+	}
+}
+
+func normalizeFlags(flags []Flag, set *flag.FlagSet) error {
+	visited := make(map[string]bool)
+	set.Visit(func(f *flag.Flag) {
+		visited[f.Name] = true
+	})
+	for _, f := range flags {
+		parts := f.Names()
+		if len(parts) == 1 {
+			continue
+		}
+		var ff *flag.Flag
+		for _, name := range parts {
+			name = strings.Trim(name, " ")
+			if visited[name] {
+				if ff != nil {
+					return errors.New("Cannot use two forms of the same flag: " + name + " " + ff.Name)
+				}
+				ff = set.Lookup(name)
+			}
+		}
+		if ff == nil {
+			continue
+		}
+		for _, name := range parts {
+			name = strings.Trim(name, " ")
+			if !visited[name] {
+				copyFlag(name, ff, set)
+			}
+		}
+	}
+	return nil
+}
+
+func makeFlagNameVisitor(names *[]string) func(*flag.Flag) {
+	return func(f *flag.Flag) {
+		nameParts := strings.Split(f.Name, ",")
+		name := strings.TrimSpace(nameParts[0])
+
+		for _, part := range nameParts {
+			part = strings.TrimSpace(part)
+			if len(part) > len(name) {
+				name = part
+			}
+		}
+
+		if name != "" {
+			*names = append(*names, name)
+		}
+	}
+}
+
+type requiredFlagsErr interface {
+	error
+	getMissingFlags() []string
+}
+
+type errRequiredFlags struct {
+	missingFlags []string
+}
+
+func (e *errRequiredFlags) Error() string {
+	numberOfMissingFlags := len(e.missingFlags)
+	if numberOfMissingFlags == 1 {
+		return fmt.Sprintf("Required flag %q not set", e.missingFlags[0])
+	}
+	joinedMissingFlags := strings.Join(e.missingFlags, ", ")
+	return fmt.Sprintf("Required flags %q not set", joinedMissingFlags)
+}
+
+func (e *errRequiredFlags) getMissingFlags() []string {
+	return e.missingFlags
+}
+
+func checkRequiredFlags(flags []Flag, context *Context) requiredFlagsErr {
+	var missingFlags []string
+	for _, f := range flags {
+		if rf, ok := f.(RequiredFlag); ok && rf.IsRequired() {
+			var flagPresent bool
+			var flagName string
+
+			for _, key := range f.Names() {
+				if len(key) > 1 {
+					flagName = key
+				}
+
+				if context.IsSet(strings.TrimSpace(key)) {
+					flagPresent = true
+				}
+			}
+
+			if !flagPresent && flagName != "" {
+				missingFlags = append(missingFlags, flagName)
+			}
+		}
+	}
+
+	if len(missingFlags) != 0 {
+		return &errRequiredFlags{missingFlags: missingFlags}
+	}
+
+	return nil
+}

vendor/github.com/urfave/cli/v2/docs.go

@@ -48,15 +48,14 @@ func (a *App) writeDocTemplate(w io.Writer) error {
 	return t.ExecuteTemplate(w, name, &cliTemplate{
 		App:          a,
 		Commands:     prepareCommands(a.Commands, 0),
-		GlobalArgs:   prepareArgsWithValues(a.Flags),
+		GlobalArgs:   prepareArgsWithValues(a.VisibleFlags()),
-		SynopsisArgs: prepareArgsSynopsis(a.Flags),
+		SynopsisArgs: prepareArgsSynopsis(a.VisibleFlags()),
 	})
 }
 
-func prepareCommands(commands []Command, level int) []string {
+func prepareCommands(commands []*Command, level int) []string {
-	coms := []string{}
+	var coms []string
-	for i := range commands {
+	for _, command := range commands {
-		command := &commands[i]
 		if command.Hidden {
 			continue
 		}
@@ -110,7 +109,8 @@ func prepareFlags(
 			continue
 		}
 		modifiedArg := opener
-		for _, s := range strings.Split(flag.GetName(), ",") {
+
+		for _, s := range flag.Names() {
 			trimmed := strings.TrimSpace(s)
 			if len(modifiedArg) > len(opener) {
 				modifiedArg += sep

vendor/github.com/urfave/cli/v2/errors.go

@@ -15,25 +15,40 @@ var OsExiter = os.Exit
 var ErrWriter io.Writer = os.Stderr
 
 // MultiError is an error that wraps multiple errors.
-type MultiError struct {
+type MultiError interface {
-	Errors []error
+	error
+	// Errors returns a copy of the errors slice
+	Errors() []error
 }
 
 // NewMultiError creates a new MultiError. Pass in one or more errors.
-func NewMultiError(err ...error) MultiError {
+func newMultiError(err ...error) MultiError {
-	return MultiError{Errors: err}
+	ret := multiError(err)
+	return &ret
 }
 
+type multiError []error
+
 // Error implements the error interface.
-func (m MultiError) Error() string {
+func (m *multiError) Error() string {
-	errs := make([]string, len(m.Errors))
+	errs := make([]string, len(*m))
-	for i, err := range m.Errors {
+	for i, err := range *m {
 		errs[i] = err.Error()
 	}
 
 	return strings.Join(errs, "\n")
 }
 
+// Errors returns a copy of the errors slice
+func (m *multiError) Errors() []error {
+	errs := make([]error, len(*m))
+	for _, err := range *m {
+		errs = append(errs, err)
+	}
+	return errs
+}
+
+// ErrorFormatter is the interface that will suitably format the error output
 type ErrorFormatter interface {
 	Format(s fmt.State, verb rune)
 }
@@ -45,29 +60,30 @@ type ExitCoder interface {
 	ExitCode() int
 }
 
-// ExitError fulfills both the builtin `error` interface and `ExitCoder`
+type exitError struct {
-type ExitError struct {
 	exitCode int
 	message  interface{}
 }
 
-// NewExitError makes a new *ExitError
+// NewExitError makes a new *exitError
-func NewExitError(message interface{}, exitCode int) *ExitError {
+func NewExitError(message interface{}, exitCode int) ExitCoder {
-	return &ExitError{
+	return Exit(message, exitCode)
-		exitCode: exitCode,
+}
+
+// Exit wraps a message and exit code into an ExitCoder suitable for handling by
+// HandleExitCoder
+func Exit(message interface{}, exitCode int) ExitCoder {
+	return &exitError{
 		message:  message,
+		exitCode: exitCode,
 	}
 }
 
-// Error returns the string message, fulfilling the interface required by
+func (ee *exitError) Error() string {
-// `error`
-func (ee *ExitError) Error() string {
 	return fmt.Sprintf("%v", ee.message)
 }
 
-// ExitCode returns the exit code, fulfilling the interface required by
+func (ee *exitError) ExitCode() int {
-// `ExitCoder`
-func (ee *ExitError) ExitCode() int {
 	return ee.exitCode
 }
 
@@ -83,9 +99,9 @@ func HandleExitCoder(err error) {
 	if exitErr, ok := err.(ExitCoder); ok {
 		if err.Error() != "" {
 			if _, ok := exitErr.(ErrorFormatter); ok {
-				fmt.Fprintf(ErrWriter, "%+v\n", err)
+				_, _ = fmt.Fprintf(ErrWriter, "%+v\n", err)
 			} else {
-				fmt.Fprintln(ErrWriter, err)
+				_, _ = fmt.Fprintln(ErrWriter, err)
 			}
 		}
 		OsExiter(exitErr.ExitCode())
@@ -101,10 +117,10 @@ func HandleExitCoder(err error) {
 
 func handleMultiError(multiErr MultiError) int {
 	code := 1
-	for _, merr := range multiErr.Errors {
+	for _, merr := range multiErr.Errors() {
 		if multiErr2, ok := merr.(MultiError); ok {
 			code = handleMultiError(multiErr2)
-		} else {
+		} else if merr != nil {
 			fmt.Fprintln(ErrWriter, merr)
 			if exitErr, ok := merr.(ExitCoder); ok {
 				code = exitErr.ExitCode()

vendor/github.com/urfave/cli/v2/fish.go

@@ -64,11 +64,9 @@ func (a *App) writeFishCompletionTemplate(w io.Writer) error {
 	})
 }
 
-func (a *App) prepareFishCommands(commands []Command, allCommands *[]string, previousCommands []string) []string {
+func (a *App) prepareFishCommands(commands []*Command, allCommands *[]string, previousCommands []string) []string {
 	completions := []string{}
-	for i := range commands {
+	for _, command := range commands {
-		command := &commands[i]
-
 		if command.Hidden {
 			continue
 		}
@@ -131,7 +129,7 @@ func (a *App) prepareFishFlags(flags []Flag, previousCommands []string) []string
 
 		fishAddFileFlag(f, completion)
 
-		for idx, opt := range strings.Split(flag.GetName(), ",") {
+		for idx, opt := range flag.Names() {
 			if idx == 0 {
 				completion.WriteString(fmt.Sprintf(
 					" -l %s", strings.TrimSpace(opt),
@@ -161,15 +159,15 @@ func (a *App) prepareFishFlags(flags []Flag, previousCommands []string) []string
 
 func fishAddFileFlag(flag Flag, completion *strings.Builder) {
 	switch f := flag.(type) {
-	case GenericFlag:
+	case *GenericFlag:
 		if f.TakesFile {
 			return
 		}
-	case StringFlag:
+	case *StringFlag:
 		if f.TakesFile {
 			return
 		}
-	case StringSliceFlag:
+	case *StringSliceFlag:
 		if f.TakesFile {
 			return
 		}

vendor/github.com/urfave/cli/v2/flag.go

@@ -5,31 +5,41 @@ import (
 	"fmt"
 	"io/ioutil"
 	"reflect"
+	"regexp"
 	"runtime"
 	"strconv"
 	"strings"
 	"syscall"
+	"time"
 )
 
 const defaultPlaceholder = "value"
 
+var (
+	slPfx = fmt.Sprintf("sl:::%d:::", time.Now().UTC().UnixNano())
+
+	commaWhitespace = regexp.MustCompile("[, ]+.*")
+)
+
 // BashCompletionFlag enables bash-completion for all commands and subcommands
-var BashCompletionFlag Flag = BoolFlag{
+var BashCompletionFlag Flag = &BoolFlag{
 	Name:   "generate-bash-completion",
 	Hidden: true,
 }
 
 // VersionFlag prints the version for the application
-var VersionFlag Flag = BoolFlag{
+var VersionFlag Flag = &BoolFlag{
-	Name:  "version, v",
+	Name:    "version",
+	Aliases: []string{"v"},
 	Usage:   "print the version",
 }
 
-// HelpFlag prints the help for all commands and subcommands
+// HelpFlag prints the help for all commands and subcommands.
-// Set to the zero value (BoolFlag{}) to disable flag -- keeps subcommand
+// Set to nil to disable the flag.  The subcommand
-// unless HideHelp is set to true)
+// will still be added unless HideHelp is set to true.
-var HelpFlag Flag = BoolFlag{
+var HelpFlag Flag = &BoolFlag{
-	Name:  "help, h",
+	Name:    "help",
+	Aliases: []string{"h"},
 	Usage:   "show help",
 }
 
@@ -37,6 +47,11 @@ var HelpFlag Flag = BoolFlag{
 // to display a flag.
 var FlagStringer FlagStringFunc = stringifyFlag
 
+// Serializer is used to circumvent the limitations of flag.FlagSet.Set
+type Serializer interface {
+	Serialize() string
+}
+
 // FlagNamePrefixer converts a full flag name and its placeholder into the help
 // message flag prefix. This is used by the default FlagStringer.
 var FlagNamePrefixer FlagNamePrefixFunc = prefixedNames
@@ -57,7 +72,12 @@ func (f FlagsByName) Len() int {
 }
 
 func (f FlagsByName) Less(i, j int) bool {
-	return lexicographicLess(f[i].GetName(), f[j].GetName())
+	if len(f[j].Names()) == 0 {
+		return false
+	} else if len(f[i].Names()) == 0 {
+		return true
+	}
+	return lexicographicLess(f[i].Names()[0], f[j].Names()[0])
 }
 
 func (f FlagsByName) Swap(i, j int) {
@@ -70,8 +90,9 @@ func (f FlagsByName) Swap(i, j int) {
 type Flag interface {
 	fmt.Stringer
 	// Apply Flag settings to the given flag set
-	Apply(*flag.FlagSet)
+	Apply(*flag.FlagSet) error
-	GetName() string
+	Names() []string
+	IsSet() bool
 }
 
 // RequiredFlag is an interface that allows us to mark flags as required
@@ -97,40 +118,18 @@ type DocGenerationFlag interface {
 	GetValue() string
 }
 
-// errorableFlag is an interface that allows us to return errors during apply
-// it allows flags defined in this library to return errors in a fashion backwards compatible
-// TODO remove in v2 and modify the existing Flag interface to return errors
-type errorableFlag interface {
-	Flag
-
-	ApplyWithError(*flag.FlagSet) error
-}
-
 func flagSet(name string, flags []Flag) (*flag.FlagSet, error) {
 	set := flag.NewFlagSet(name, flag.ContinueOnError)
 
 	for _, f := range flags {
-		//TODO remove in v2 when errorableFlag is removed
+		if err := f.Apply(set); err != nil {
-		if ef, ok := f.(errorableFlag); ok {
-			if err := ef.ApplyWithError(set); err != nil {
 			return nil, err
 		}
-		} else {
-			f.Apply(set)
-		}
 	}
 	set.SetOutput(ioutil.Discard)
 	return set, nil
 }
 
-func eachName(longName string, fn func(string)) {
-	parts := strings.Split(longName, ",")
-	for _, name := range parts {
-		name = strings.Trim(name, " ")
-		fn(name)
-	}
-}
-
 func visibleFlags(fl []Flag) []Flag {
 	var visible []Flag
 	for _, f := range fl {
@@ -169,25 +168,27 @@ func unquoteUsage(usage string) (string, string) {
 	return "", usage
 }
 
-func prefixedNames(fullName, placeholder string) string {
+func prefixedNames(names []string, placeholder string) string {
 	var prefixed string
-	parts := strings.Split(fullName, ",")
+	for i, name := range names {
-	for i, name := range parts {
+		if name == "" {
-		name = strings.Trim(name, " ")
+			continue
+		}
+
 		prefixed += prefixFor(name) + name
 		if placeholder != "" {
 			prefixed += " " + placeholder
 		}
-		if i < len(parts)-1 {
+		if i < len(names)-1 {
 			prefixed += ", "
 		}
 	}
 	return prefixed
 }
 
-func withEnvHint(envVar, str string) string {
+func withEnvHint(envVars []string, str string) string {
 	envText := ""
-	if envVar != "" {
+	if envVars != nil && len(envVars) > 0 {
 		prefix := "$"
 		suffix := ""
 		sep := ", $"
@@ -196,11 +197,51 @@ func withEnvHint(envVar, str string) string {
 			suffix = "%"
 			sep = "%, %"
 		}
-		envText = " [" + prefix + strings.Join(strings.Split(envVar, ","), sep) + suffix + "]"
+
+		envText = fmt.Sprintf(" [%s%s%s]", prefix, strings.Join(envVars, sep), suffix)
 	}
 	return str + envText
 }
 
+func flagNames(f Flag) []string {
+	var ret []string
+
+	name := flagStringField(f, "Name")
+	aliases := flagStringSliceField(f, "Aliases")
+
+	for _, part := range append([]string{name}, aliases...) {
+		// v1 -> v2 migration warning zone:
+		// Strip off anything after the first found comma or space, which
+		// *hopefully* makes it a tiny bit more obvious that unexpected behavior is
+		// caused by using the v1 form of stringly typed "Name".
+		ret = append(ret, commaWhitespace.ReplaceAllString(part, ""))
+	}
+
+	return ret
+}
+
+func flagStringSliceField(f Flag, name string) []string {
+	fv := flagValue(f)
+	field := fv.FieldByName(name)
+
+	if field.IsValid() {
+		return field.Interface().([]string)
+	}
+
+	return []string{}
+}
+
+func flagStringField(f Flag, name string) string {
+	fv := flagValue(f)
+	field := fv.FieldByName(name)
+
+	if field.IsValid() {
+		return field.String()
+	}
+
+	return ""
+}
+
 func withFileHint(filePath, str string) string {
 	fileText := ""
 	if filePath != "" {
@@ -221,39 +262,27 @@ func stringifyFlag(f Flag) string {
 	fv := flagValue(f)
 
 	switch f.(type) {
-	case IntSliceFlag:
+	case *IntSliceFlag:
-		return FlagFileHinter(
+		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			fv.FieldByName("FilePath").String(),
+			stringifyIntSliceFlag(f.(*IntSliceFlag)))
-			FlagEnvHinter(
+	case *Int64SliceFlag:
-				fv.FieldByName("EnvVar").String(),
+		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-				stringifyIntSliceFlag(f.(IntSliceFlag)),
+			stringifyInt64SliceFlag(f.(*Int64SliceFlag)))
-			),
+	case *Float64SliceFlag:
-		)
+		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-	case Int64SliceFlag:
+			stringifyFloat64SliceFlag(f.(*Float64SliceFlag)))
-		return FlagFileHinter(
+	case *StringSliceFlag:
-			fv.FieldByName("FilePath").String(),
+		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			FlagEnvHinter(
+			stringifyStringSliceFlag(f.(*StringSliceFlag)))
-				fv.FieldByName("EnvVar").String(),
-				stringifyInt64SliceFlag(f.(Int64SliceFlag)),
-			),
-		)
-	case StringSliceFlag:
-		return FlagFileHinter(
-			fv.FieldByName("FilePath").String(),
-			FlagEnvHinter(
-				fv.FieldByName("EnvVar").String(),
-				stringifyStringSliceFlag(f.(StringSliceFlag)),
-			),
-		)
 	}
 
 	placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String())
 
 	needsPlaceholder := false
 	defaultValueString := ""
-
+	val := fv.FieldByName("Value")
-	if val := fv.FieldByName("Value"); val.IsValid() {
+	if val.IsValid() {
-		needsPlaceholder = true
+		needsPlaceholder = val.Kind() != reflect.Bool
 		defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface())
 
 		if val.Kind() == reflect.String && val.String() != "" {
@@ -261,6 +290,12 @@ func stringifyFlag(f Flag) string {
 		}
 	}
 
+	helpText := fv.FieldByName("DefaultText")
+	if helpText.IsValid() && helpText.String() != "" {
+		needsPlaceholder = val.Kind() != reflect.Bool
+		defaultValueString = fmt.Sprintf(" (default: %s)", helpText.String())
+	}
+
 	if defaultValueString == " (default: )" {
 		defaultValueString = ""
 	}
@@ -271,16 +306,11 @@ func stringifyFlag(f Flag) string {
 
 	usageWithDefault := strings.TrimSpace(usage + defaultValueString)
 
-	return FlagFileHinter(
+	return withEnvHint(flagStringSliceField(f, "EnvVars"),
-		fv.FieldByName("FilePath").String(),
+		fmt.Sprintf("%s\t%s", prefixedNames(f.Names(), placeholder), usageWithDefault))
-		FlagEnvHinter(
-			fv.FieldByName("EnvVar").String(),
-			FlagNamePrefixer(fv.FieldByName("Name").String(), placeholder)+"\t"+usageWithDefault,
-		),
-	)
 }
 
-func stringifyIntSliceFlag(f IntSliceFlag) string {
+func stringifyIntSliceFlag(f *IntSliceFlag) string {
 	var defaultVals []string
 	if f.Value != nil && len(f.Value.Value()) > 0 {
 		for _, i := range f.Value.Value() {
@@ -288,10 +318,10 @@ func stringifyIntSliceFlag(f IntSliceFlag) string {
 		}
 	}
 
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+	return stringifySliceFlag(f.Usage, f.Names(), defaultVals)
 }
 
-func stringifyInt64SliceFlag(f Int64SliceFlag) string {
+func stringifyInt64SliceFlag(f *Int64SliceFlag) string {
 	var defaultVals []string
 	if f.Value != nil && len(f.Value.Value()) > 0 {
 		for _, i := range f.Value.Value() {
@@ -299,10 +329,22 @@ func stringifyInt64SliceFlag(f Int64SliceFlag) string {
 		}
 	}
 
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+	return stringifySliceFlag(f.Usage, f.Names(), defaultVals)
 }
 
-func stringifyStringSliceFlag(f StringSliceFlag) string {
+func stringifyFloat64SliceFlag(f *Float64SliceFlag) string {
+	var defaultVals []string
+
+	if f.Value != nil && len(f.Value.Value()) > 0 {
+		for _, i := range f.Value.Value() {
+			defaultVals = append(defaultVals, strings.TrimRight(strings.TrimRight(fmt.Sprintf("%f", i), "0"), "."))
+		}
+	}
+
+	return stringifySliceFlag(f.Usage, f.Names(), defaultVals)
+}
+
+func stringifyStringSliceFlag(f *StringSliceFlag) string {
 	var defaultVals []string
 	if f.Value != nil && len(f.Value.Value()) > 0 {
 		for _, s := range f.Value.Value() {
@@ -312,10 +354,10 @@ func stringifyStringSliceFlag(f StringSliceFlag) string {
 		}
 	}
 
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+	return stringifySliceFlag(f.Usage, f.Names(), defaultVals)
 }
 
-func stringifySliceFlag(usage, name string, defaultVals []string) string {
+func stringifySliceFlag(usage string, names, defaultVals []string) string {
 	placeholder, usage := unquoteUsage(usage)
 	if placeholder == "" {
 		placeholder = defaultPlaceholder
@@ -326,15 +368,25 @@ func stringifySliceFlag(usage, name string, defaultVals []string) string {
 		defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", "))
 	}
 
-	usageWithDefault := strings.TrimSpace(usage + defaultVal)
+	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultVal))
-	return FlagNamePrefixer(name, placeholder) + "\t" + usageWithDefault
+	return fmt.Sprintf("%s\t%s", prefixedNames(names, placeholder), usageWithDefault)
 }
 
-func flagFromFileEnv(filePath, envName string) (val string, ok bool) {
+func hasFlag(flags []Flag, fl Flag) bool {
-	for _, envVar := range strings.Split(envName, ",") {
+	for _, existing := range flags {
+		if fl == existing {
+			return true
+		}
+	}
+
+	return false
+}
+
+func flagFromEnvOrFile(envVars []string, filePath string) (val string, ok bool) {
+	for _, envVar := range envVars {
 		envVar = strings.TrimSpace(envVar)
-		if envVal, ok := syscall.Getenv(envVar); ok {
+		if val, ok := syscall.Getenv(envVar); ok {
-			return envVal, true
+			return val, true
 		}
 	}
 	for _, fileVar := range strings.Split(filePath, ",") {

vendor/github.com/urfave/cli/v2/flag_bool.go

@@ -9,93 +9,90 @@ import (
 // BoolFlag is a flag with type bool
 type BoolFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
+	Value       bool
+	DefaultText string
 	Destination *bool
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *BoolFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f BoolFlag) String() string {
+func (f *BoolFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f BoolFlag) GetName() string {
+func (f *BoolFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f BoolFlag) IsRequired() bool {
+func (f *BoolFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f BoolFlag) TakesValue() bool {
+func (f *BoolFlag) TakesValue() bool {
 	return false
 }
 
 // GetUsage returns the usage string for the flag
-func (f BoolFlag) GetUsage() string {
+func (f *BoolFlag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f BoolFlag) GetValue() string {
+func (f *BoolFlag) GetValue() string {
 	return ""
 }
 
+// Apply populates the flag given the flag set and environment
+func (f *BoolFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if val != "" {
+			valBool, err := strconv.ParseBool(val)
+
+			if err != nil {
+				return fmt.Errorf("could not parse %q as bool value for flag %s: %s", val, f.Name, err)
+			}
+
+			f.Value = valBool
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
+		if f.Destination != nil {
+			set.BoolVar(f.Destination, name, f.Value, f.Usage)
+			continue
+		}
+		set.Bool(name, f.Value, f.Usage)
+	}
+
+	return nil
+}
+
 // Bool looks up the value of a local BoolFlag, returns
 // false if not found
 func (c *Context) Bool(name string) bool {
-	return lookupBool(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalBool looks up the value of a global BoolFlag, returns
-// false if not found
-func (c *Context) GlobalBool(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupBool(name, fs)
 	}
 	return false
 }
 
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := false
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		if envVal == "" {
-			val = false
-		} else {
-			envValBool, err := strconv.ParseBool(envVal)
-			if err != nil {
-				return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-			}
-			val = envValBool
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
 func lookupBool(name string, set *flag.FlagSet) bool {
 	f := set.Lookup(name)
 	if f != nil {

vendor/github.com/urfave/cli/v2/flag_duration.go

@@ -9,90 +9,89 @@ import (
 // DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration)
 type DurationFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       time.Duration
+	DefaultText string
 	Destination *time.Duration
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *DurationFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f DurationFlag) String() string {
+func (f *DurationFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f DurationFlag) GetName() string {
+func (f *DurationFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f DurationFlag) IsRequired() bool {
+func (f *DurationFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f DurationFlag) TakesValue() bool {
+func (f *DurationFlag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f DurationFlag) GetUsage() string {
+func (f *DurationFlag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f DurationFlag) GetValue() string {
+func (f *DurationFlag) GetValue() string {
 	return f.Value.String()
 }
 
+// Apply populates the flag given the flag set and environment
+func (f *DurationFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if val != "" {
+			valDuration, err := time.ParseDuration(val)
+
+			if err != nil {
+				return fmt.Errorf("could not parse %q as duration value for flag %s: %s", val, f.Name, err)
+			}
+
+			f.Value = valDuration
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
+		if f.Destination != nil {
+			set.DurationVar(f.Destination, name, f.Value, f.Usage)
+			continue
+		}
+		set.Duration(name, f.Value, f.Usage)
+	}
+	return nil
+}
+
 // Duration looks up the value of a local DurationFlag, returns
 // 0 if not found
 func (c *Context) Duration(name string) time.Duration {
-	return lookupDuration(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalDuration looks up the value of a global DurationFlag, returns
-// 0 if not found
-func (c *Context) GlobalDuration(name string) time.Duration {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupDuration(name, fs)
 	}
 	return 0
 }
 
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f DurationFlag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValDuration, err := time.ParseDuration(envVal)
-		if err != nil {
-			return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err)
-		}
-
-		f.Value = envValDuration
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.DurationVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Duration(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
 func lookupDuration(name string, set *flag.FlagSet) time.Duration {
 	f := set.Lookup(name)
 	if f != nil {

vendor/github.com/urfave/cli/v2/flag_float64.go

@@ -9,90 +9,90 @@ import (
 // Float64Flag is a flag with type float64
 type Float64Flag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       float64
+	DefaultText string
 	Destination *float64
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *Float64Flag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f Float64Flag) String() string {
+func (f *Float64Flag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f Float64Flag) GetName() string {
+func (f *Float64Flag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f Float64Flag) IsRequired() bool {
+func (f *Float64Flag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f Float64Flag) TakesValue() bool {
+func (f *Float64Flag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f Float64Flag) GetUsage() string {
+func (f *Float64Flag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f Float64Flag) GetValue() string {
+func (f *Float64Flag) GetValue() string {
 	return fmt.Sprintf("%f", f.Value)
 }
 
+// Apply populates the flag given the flag set and environment
+func (f *Float64Flag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if val != "" {
+			valFloat, err := strconv.ParseFloat(val, 10)
+
+			if err != nil {
+				return fmt.Errorf("could not parse %q as float64 value for flag %s: %s", val, f.Name, err)
+			}
+
+			f.Value = valFloat
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
+		if f.Destination != nil {
+			set.Float64Var(f.Destination, name, f.Value, f.Usage)
+			continue
+		}
+		set.Float64(name, f.Value, f.Usage)
+	}
+
+	return nil
+}
+
 // Float64 looks up the value of a local Float64Flag, returns
 // 0 if not found
 func (c *Context) Float64(name string) float64 {
-	return lookupFloat64(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalFloat64 looks up the value of a global Float64Flag, returns
-// 0 if not found
-func (c *Context) GlobalFloat64(name string) float64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupFloat64(name, fs)
 	}
 	return 0
 }
 
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Float64Flag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Float64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValFloat, err := strconv.ParseFloat(envVal, 10)
-		if err != nil {
-			return fmt.Errorf("could not parse %s as float64 value for flag %s: %s", envVal, f.Name, err)
-		}
-
-		f.Value = envValFloat
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Float64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Float64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
 func lookupFloat64(name string, set *flag.FlagSet) float64 {
 	f := set.Lookup(name)
 	if f != nil {

vendor/github.com/urfave/cli/v2/flag_float64_slice.go

@@ -0,0 +1,165 @@
+package cli
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Float64Slice wraps []float64 to satisfy flag.Value
+type Float64Slice struct {
+	slice      []float64
+	hasBeenSet bool
+}
+
+// NewFloat64Slice makes a *Float64Slice with default values
+func NewFloat64Slice(defaults ...float64) *Float64Slice {
+	return &Float64Slice{slice: append([]float64{}, defaults...)}
+}
+
+// Set parses the value into a float64 and appends it to the list of values
+func (f *Float64Slice) Set(value string) error {
+	if !f.hasBeenSet {
+		f.slice = []float64{}
+		f.hasBeenSet = true
+	}
+
+	if strings.HasPrefix(value, slPfx) {
+		// Deserializing assumes overwrite
+		_ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &f.slice)
+		f.hasBeenSet = true
+		return nil
+	}
+
+	tmp, err := strconv.ParseFloat(value, 64)
+	if err != nil {
+		return err
+	}
+
+	f.slice = append(f.slice, tmp)
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (f *Float64Slice) String() string {
+	return fmt.Sprintf("%#v", f.slice)
+}
+
+// Serialize allows Float64Slice to fulfill Serializer
+func (f *Float64Slice) Serialize() string {
+	jsonBytes, _ := json.Marshal(f.slice)
+	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
+}
+
+// Value returns the slice of float64s set by this flag
+func (f *Float64Slice) Value() []float64 {
+	return f.slice
+}
+
+// Get returns the slice of float64s set by this flag
+func (f *Float64Slice) Get() interface{} {
+	return *f
+}
+
+// Float64SliceFlag is a flag with type *Float64Slice
+type Float64SliceFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       *Float64Slice
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *Float64SliceFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *Float64SliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *Float64SliceFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *Float64SliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true if the flag takes a value, otherwise false
+func (f *Float64SliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *Float64SliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *Float64SliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if val != "" {
+			f.Value = &Float64Slice{}
+
+			for _, s := range strings.Split(val, ",") {
+				if err := f.Value.Set(strings.TrimSpace(s)); err != nil {
+					return fmt.Errorf("could not parse %q as float64 slice value for flag %s: %s", f.Value, f.Name, err)
+				}
+			}
+
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
+		if f.Value == nil {
+			f.Value = &Float64Slice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	}
+
+	return nil
+}
+
+// Float64Slice looks up the value of a local Float64SliceFlag, returns
+// nil if not found
+func (c *Context) Float64Slice(name string) []float64 {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupFloat64Slice(name, fs)
+	}
+	return nil
+}
+
+func lookupFloat64Slice(name string, set *flag.FlagSet) []float64 {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := (f.Value.(*Float64Slice)).Value(), error(nil)
+		if err != nil {
+			return nil
+		}
+		return parsed
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_generic.go

@@ -14,44 +14,52 @@ type Generic interface {
 // GenericFlag is a flag with type Generic
 type GenericFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar    string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	TakesFile   bool
 	Value       Generic
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *GenericFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f GenericFlag) String() string {
+func (f *GenericFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f GenericFlag) GetName() string {
+func (f *GenericFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f GenericFlag) IsRequired() bool {
+func (f *GenericFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f GenericFlag) TakesValue() bool {
+func (f *GenericFlag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f GenericFlag) GetUsage() string {
+func (f *GenericFlag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f GenericFlag) GetValue() string {
+func (f *GenericFlag) GetValue() string {
 	if f.Value != nil {
 		return f.Value.String()
 	}
@@ -60,24 +68,20 @@ func (f GenericFlag) GetValue() string {
 
 // Apply takes the flagset and calls Set on the generic flag with the value
 // provided by the user for parsing by the flag
-// Ignores parsing errors
+func (f GenericFlag) Apply(set *flag.FlagSet) error {
-func (f GenericFlag) Apply(set *flag.FlagSet) {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
-	_ = f.ApplyWithError(set)
+		if val != "" {
-}
+			if err := f.Value.Set(val); err != nil {
+				return fmt.Errorf("could not parse %q as value for flag %s: %s", val, f.Name, err)
+			}
 
-// ApplyWithError takes the flagset and calls Set on the generic flag with the value
+			f.HasBeenSet = true
-// provided by the user for parsing by the flag
-func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := f.Value
-	if fileEnvVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		if err := val.Set(fileEnvVal); err != nil {
-			return fmt.Errorf("could not parse %s as value for flag %s: %s", fileEnvVal, f.Name, err)
 		}
 	}
 
-	eachName(f.Name, func(name string) {
+	for _, name := range f.Names() {
 		set.Var(f.Value, name, f.Usage)
-	})
+	}
 
 	return nil
 }
@@ -85,13 +89,7 @@ func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error {
 // Generic looks up the value of a local GenericFlag, returns
 // nil if not found
 func (c *Context) Generic(name string) interface{} {
-	return lookupGeneric(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalGeneric looks up the value of a global GenericFlag, returns
-// nil if not found
-func (c *Context) GlobalGeneric(name string) interface{} {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupGeneric(name, fs)
 	}
 	return nil

vendor/github.com/urfave/cli/v2/flag_int.go

@@ -9,70 +9,77 @@ import (
 // IntFlag is a flag with type int
 type IntFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       int
+	DefaultText string
 	Destination *int
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *IntFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f IntFlag) String() string {
+func (f *IntFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f IntFlag) GetName() string {
+func (f *IntFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f IntFlag) IsRequired() bool {
+func (f *IntFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f IntFlag) TakesValue() bool {
+func (f *IntFlag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f IntFlag) GetUsage() string {
+func (f *IntFlag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f IntFlag) GetValue() string {
+func (f *IntFlag) GetValue() string {
 	return fmt.Sprintf("%d", f.Value)
 }
 
 // Apply populates the flag given the flag set and environment
-// Ignores errors
+func (f *IntFlag) Apply(set *flag.FlagSet) error {
-func (f IntFlag) Apply(set *flag.FlagSet) {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
-	_ = f.ApplyWithError(set)
+		if val != "" {
-}
+			valInt, err := strconv.ParseInt(val, 0, 64)
 
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValInt, err := strconv.ParseInt(envVal, 0, 64)
 			if err != nil {
-			return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
+				return fmt.Errorf("could not parse %q as int value for flag %s: %s", val, f.Name, err)
-		}
-		f.Value = int(envValInt)
 			}
 
-	eachName(f.Name, func(name string) {
+			f.Value = int(valInt)
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
 		if f.Destination != nil {
 			set.IntVar(f.Destination, name, f.Value, f.Usage)
-			return
+			continue
 		}
 		set.Int(name, f.Value, f.Usage)
-	})
+	}
 
 	return nil
 }
@@ -80,13 +87,7 @@ func (f IntFlag) ApplyWithError(set *flag.FlagSet) error {
 // Int looks up the value of a local IntFlag, returns
 // 0 if not found
 func (c *Context) Int(name string) int {
-	return lookupInt(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalInt looks up the value of a global IntFlag, returns
-// 0 if not found
-func (c *Context) GlobalInt(name string) int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupInt(name, fs)
 	}
 	return 0

vendor/github.com/urfave/cli/v2/flag_int64.go

@@ -9,85 +9,84 @@ import (
 // Int64Flag is a flag with type int64
 type Int64Flag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       int64
+	DefaultText string
 	Destination *int64
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *Int64Flag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f Int64Flag) String() string {
+func (f *Int64Flag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f Int64Flag) GetName() string {
+func (f *Int64Flag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f Int64Flag) IsRequired() bool {
+func (f *Int64Flag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f Int64Flag) TakesValue() bool {
+func (f *Int64Flag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f Int64Flag) GetUsage() string {
+func (f *Int64Flag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f Int64Flag) GetValue() string {
+func (f *Int64Flag) GetValue() string {
 	return fmt.Sprintf("%d", f.Value)
 }
 
 // Apply populates the flag given the flag set and environment
-// Ignores errors
+func (f *Int64Flag) Apply(set *flag.FlagSet) error {
-func (f Int64Flag) Apply(set *flag.FlagSet) {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
-	_ = f.ApplyWithError(set)
+		if val != "" {
-}
+			valInt, err := strconv.ParseInt(val, 0, 64)
 
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValInt, err := strconv.ParseInt(envVal, 0, 64)
 			if err != nil {
-			return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
+				return fmt.Errorf("could not parse %q as int value for flag %s: %s", val, f.Name, err)
 			}
 
-		f.Value = envValInt
+			f.Value = valInt
+			f.HasBeenSet = true
+		}
 	}
 
-	eachName(f.Name, func(name string) {
+	for _, name := range f.Names() {
 		if f.Destination != nil {
 			set.Int64Var(f.Destination, name, f.Value, f.Usage)
-			return
+			continue
 		}
 		set.Int64(name, f.Value, f.Usage)
-	})
+	}
-
 	return nil
 }
 
 // Int64 looks up the value of a local Int64Flag, returns
 // 0 if not found
 func (c *Context) Int64(name string) int64 {
-	return lookupInt64(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalInt64 looks up the value of a global Int64Flag, returns
-// 0 if not found
-func (c *Context) GlobalInt64(name string) int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupInt64(name, fs)
 	}
 	return 0

vendor/github.com/urfave/cli/v2/flag_int64_slice.go

@@ -0,0 +1,161 @@
+package cli
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Int64Slice wraps []int64 to satisfy flag.Value
+type Int64Slice struct {
+	slice      []int64
+	hasBeenSet bool
+}
+
+// NewInt64Slice makes an *Int64Slice with default values
+func NewInt64Slice(defaults ...int64) *Int64Slice {
+	return &Int64Slice{slice: append([]int64{}, defaults...)}
+}
+
+// Set parses the value into an integer and appends it to the list of values
+func (i *Int64Slice) Set(value string) error {
+	if !i.hasBeenSet {
+		i.slice = []int64{}
+		i.hasBeenSet = true
+	}
+
+	if strings.HasPrefix(value, slPfx) {
+		// Deserializing assumes overwrite
+		_ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &i.slice)
+		i.hasBeenSet = true
+		return nil
+	}
+
+	tmp, err := strconv.ParseInt(value, 0, 64)
+	if err != nil {
+		return err
+	}
+
+	i.slice = append(i.slice, tmp)
+
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (i *Int64Slice) String() string {
+	return fmt.Sprintf("%#v", i.slice)
+}
+
+// Serialize allows Int64Slice to fulfill Serializer
+func (i *Int64Slice) Serialize() string {
+	jsonBytes, _ := json.Marshal(i.slice)
+	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
+}
+
+// Value returns the slice of ints set by this flag
+func (i *Int64Slice) Value() []int64 {
+	return i.slice
+}
+
+// Get returns the slice of ints set by this flag
+func (i *Int64Slice) Get() interface{} {
+	return *i
+}
+
+// Int64SliceFlag is a flag with type *Int64Slice
+type Int64SliceFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       *Int64Slice
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *Int64SliceFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *Int64SliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *Int64SliceFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *Int64SliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *Int64SliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f Int64SliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *Int64SliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		f.Value = &Int64Slice{}
+
+		for _, s := range strings.Split(val, ",") {
+			if err := f.Value.Set(strings.TrimSpace(s)); err != nil {
+				return fmt.Errorf("could not parse %q as int64 slice value for flag %s: %s", val, f.Name, err)
+			}
+		}
+
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		if f.Value == nil {
+			f.Value = &Int64Slice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	}
+
+	return nil
+}
+
+// Int64Slice looks up the value of a local Int64SliceFlag, returns
+// nil if not found
+func (c *Context) Int64Slice(name string) []int64 {
+	return lookupInt64Slice(name, c.flagSet)
+}
+
+func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
+		if err != nil {
+			return nil
+		}
+		return parsed
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_int_slice.go

@@ -0,0 +1,175 @@
+package cli
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// IntSlice wraps []int to satisfy flag.Value
+type IntSlice struct {
+	slice      []int
+	hasBeenSet bool
+}
+
+// NewIntSlice makes an *IntSlice with default values
+func NewIntSlice(defaults ...int) *IntSlice {
+	return &IntSlice{slice: append([]int{}, defaults...)}
+}
+
+// TODO: Consistently have specific Set function for Int64 and Float64 ?
+// SetInt directly adds an integer to the list of values
+func (i *IntSlice) SetInt(value int) {
+	if !i.hasBeenSet {
+		i.slice = []int{}
+		i.hasBeenSet = true
+	}
+
+	i.slice = append(i.slice, value)
+}
+
+// Set parses the value into an integer and appends it to the list of values
+func (i *IntSlice) Set(value string) error {
+	if !i.hasBeenSet {
+		i.slice = []int{}
+		i.hasBeenSet = true
+	}
+
+	if strings.HasPrefix(value, slPfx) {
+		// Deserializing assumes overwrite
+		_ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &i.slice)
+		i.hasBeenSet = true
+		return nil
+	}
+
+	tmp, err := strconv.ParseInt(value, 0, 64)
+	if err != nil {
+		return err
+	}
+
+	i.slice = append(i.slice, int(tmp))
+
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (i *IntSlice) String() string {
+	return fmt.Sprintf("%#v", i.slice)
+}
+
+// Serialize allows IntSlice to fulfill Serializer
+func (i *IntSlice) Serialize() string {
+	jsonBytes, _ := json.Marshal(i.slice)
+	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
+}
+
+// Value returns the slice of ints set by this flag
+func (i *IntSlice) Value() []int {
+	return i.slice
+}
+
+// Get returns the slice of ints set by this flag
+func (i *IntSlice) Get() interface{} {
+	return *i
+}
+
+// IntSliceFlag is a flag with type *IntSlice
+type IntSliceFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       *IntSlice
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *IntSliceFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *IntSliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *IntSliceFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *IntSliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *IntSliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f IntSliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *IntSliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *IntSliceFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		f.Value = &IntSlice{}
+
+		for _, s := range strings.Split(val, ",") {
+			if err := f.Value.Set(strings.TrimSpace(s)); err != nil {
+				return fmt.Errorf("could not parse %q as int slice value for flag %s: %s", val, f.Name, err)
+			}
+		}
+
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		if f.Value == nil {
+			f.Value = &IntSlice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	}
+
+	return nil
+}
+
+// IntSlice looks up the value of a local IntSliceFlag, returns
+// nil if not found
+func (c *Context) IntSlice(name string) []int {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupIntSlice(name, c.flagSet)
+	}
+	return nil
+}
+
+func lookupIntSlice(name string, set *flag.FlagSet) []int {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
+		if err != nil {
+			return nil
+		}
+		return parsed
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_path.go

@@ -0,0 +1,95 @@
+package cli
+
+import "flag"
+
+type PathFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	TakesFile   bool
+	Value       string
+	DefaultText string
+	Destination *string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *PathFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *PathFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *PathFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *PathFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *PathFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *PathFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *PathFlag) GetValue() string {
+	return f.Value
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *PathFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		f.Value = val
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		if f.Destination != nil {
+			set.StringVar(f.Destination, name, f.Value, f.Usage)
+			continue
+		}
+		set.String(name, f.Value, f.Usage)
+	}
+
+	return nil
+}
+
+// Path looks up the value of a local PathFlag, returns
+// "" if not found
+func (c *Context) Path(name string) string {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupPath(name, fs)
+	}
+
+	return ""
+}
+
+func lookupPath(name string, set *flag.FlagSet) string {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := f.Value.String(), error(nil)
+		if err != nil {
+			return ""
+		}
+		return parsed
+	}
+	return ""
+}

vendor/github.com/urfave/cli/v2/flag_string.go

@@ -5,67 +5,70 @@ import "flag"
 // StringFlag is a flag with type string
 type StringFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	TakesFile   bool
 	Value       string
+	DefaultText string
 	Destination *string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *StringFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f StringFlag) String() string {
+func (f *StringFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f StringFlag) GetName() string {
+func (f *StringFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f StringFlag) IsRequired() bool {
+func (f *StringFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f StringFlag) TakesValue() bool {
+func (f *StringFlag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f StringFlag) GetUsage() string {
+func (f *StringFlag) GetUsage() string {
 	return f.Usage
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f StringFlag) GetValue() string {
+func (f *StringFlag) GetValue() string {
 	return f.Value
 }
 
 // Apply populates the flag given the flag set and environment
-// Ignores errors
+func (f *StringFlag) Apply(set *flag.FlagSet) error {
-func (f StringFlag) Apply(set *flag.FlagSet) {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
-	_ = f.ApplyWithError(set)
+		f.Value = val
-}
+		f.HasBeenSet = true
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		f.Value = envVal
 	}
 
-	eachName(f.Name, func(name string) {
+	for _, name := range f.Names() {
 		if f.Destination != nil {
 			set.StringVar(f.Destination, name, f.Value, f.Usage)
-			return
+			continue
 		}
 		set.String(name, f.Value, f.Usage)
-	})
+	}
 
 	return nil
 }
@@ -73,13 +76,7 @@ func (f StringFlag) ApplyWithError(set *flag.FlagSet) error {
 // String looks up the value of a local StringFlag, returns
 // "" if not found
 func (c *Context) String(name string) string {
-	return lookupString(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalString looks up the value of a global StringFlag, returns
-// "" if not found
-func (c *Context) GlobalString(name string) string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupString(name, fs)
 	}
 	return ""

vendor/github.com/urfave/cli/v2/flag_string_slice.go

@@ -0,0 +1,159 @@
+package cli
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"strings"
+)
+
+// StringSlice wraps a []string to satisfy flag.Value
+type StringSlice struct {
+	slice      []string
+	hasBeenSet bool
+}
+
+// NewStringSlice creates a *StringSlice with default values
+func NewStringSlice(defaults ...string) *StringSlice {
+	return &StringSlice{slice: append([]string{}, defaults...)}
+}
+
+// Set appends the string value to the list of values
+func (s *StringSlice) Set(value string) error {
+	if !s.hasBeenSet {
+		s.slice = []string{}
+		s.hasBeenSet = true
+	}
+
+	if strings.HasPrefix(value, slPfx) {
+		// Deserializing assumes overwrite
+		_ = json.Unmarshal([]byte(strings.Replace(value, slPfx, "", 1)), &s.slice)
+		s.hasBeenSet = true
+		return nil
+	}
+
+	s.slice = append(s.slice, value)
+
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (s *StringSlice) String() string {
+	return fmt.Sprintf("%s", s.slice)
+}
+
+// Serialize allows StringSlice to fulfill Serializer
+func (s *StringSlice) Serialize() string {
+	jsonBytes, _ := json.Marshal(s.slice)
+	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
+}
+
+// Value returns the slice of strings set by this flag
+func (s *StringSlice) Value() []string {
+	return s.slice
+}
+
+// Get returns the slice of strings set by this flag
+func (s *StringSlice) Get() interface{} {
+	return *s
+}
+
+// StringSliceFlag is a flag with type *StringSlice
+type StringSliceFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	TakesFile   bool
+	Value       *StringSlice
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *StringSliceFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *StringSliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *StringSliceFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *StringSliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *StringSliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *StringSliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *StringSliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *StringSliceFlag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		f.Value = &StringSlice{}
+
+		for _, s := range strings.Split(val, ",") {
+			if err := f.Value.Set(strings.TrimSpace(s)); err != nil {
+				return fmt.Errorf("could not parse %q as string value for flag %s: %s", val, f.Name, err)
+			}
+		}
+
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		if f.Value == nil {
+			f.Value = &StringSlice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	}
+
+	return nil
+}
+
+// StringSlice looks up the value of a local StringSliceFlag, returns
+// nil if not found
+func (c *Context) StringSlice(name string) []string {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupStringSlice(name, fs)
+	}
+	return nil
+}
+
+func lookupStringSlice(name string, set *flag.FlagSet) []string {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := (f.Value.(*StringSlice)).Value(), error(nil)
+		if err != nil {
+			return nil
+		}
+		return parsed
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_timestamp.go

@@ -0,0 +1,152 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"time"
+)
+
+// Timestamp wrap to satisfy golang's flag interface.
+type Timestamp struct {
+	timestamp  *time.Time
+	hasBeenSet bool
+	layout     string
+}
+
+// Timestamp constructor
+func NewTimestamp(timestamp time.Time) *Timestamp {
+	return &Timestamp{timestamp: &timestamp}
+}
+
+// Set the timestamp value directly
+func (t *Timestamp) SetTimestamp(value time.Time) {
+	if !t.hasBeenSet {
+		t.timestamp = &value
+		t.hasBeenSet = true
+	}
+}
+
+// Set the timestamp string layout for future parsing
+func (t *Timestamp) SetLayout(layout string) {
+	t.layout = layout
+}
+
+// Parses the string value to timestamp
+func (t *Timestamp) Set(value string) error {
+	timestamp, err := time.Parse(t.layout, value)
+	if err != nil {
+		return err
+	}
+
+	t.timestamp = &timestamp
+	t.hasBeenSet = true
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (t *Timestamp) String() string {
+	return fmt.Sprintf("%#v", t.timestamp)
+}
+
+// Value returns the timestamp value stored in the flag
+func (t *Timestamp) Value() *time.Time {
+	return t.timestamp
+}
+
+// Get returns the flag structure
+func (t *Timestamp) Get() interface{} {
+	return *t
+}
+
+// TimestampFlag is a flag with type time
+type TimestampFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Layout      string
+	Value       *Timestamp
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *TimestampFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *TimestampFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *TimestampFlag) Names() []string {
+	return flagNames(f)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *TimestampFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *TimestampFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *TimestampFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *TimestampFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.timestamp.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *TimestampFlag) Apply(set *flag.FlagSet) error {
+	if f.Layout == "" {
+		return fmt.Errorf("timestamp Layout is required")
+	}
+	f.Value = &Timestamp{}
+	f.Value.SetLayout(f.Layout)
+
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if err := f.Value.Set(val); err != nil {
+			return fmt.Errorf("could not parse %q as timestamp value for flag %s: %s", val, f.Name, err)
+		}
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		set.Var(f.Value, name, f.Usage)
+	}
+	return nil
+}
+
+// Timestamp gets the timestamp from a flag name
+func (c *Context) Timestamp(name string) *time.Time {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupTimestamp(name, fs)
+	}
+	return nil
+}
+
+// Fetches the timestamp value from the local timestampWrap
+func lookupTimestamp(name string, set *flag.FlagSet) *time.Time {
+	f := set.Lookup(name)
+	if f != nil {
+		return (f.Value.(*Timestamp)).Value()
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_uint.go

@@ -9,85 +9,84 @@ import (
 // UintFlag is a flag with type uint
 type UintFlag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       uint
+	DefaultText string
 	Destination *uint
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *UintFlag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f UintFlag) String() string {
+func (f *UintFlag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f UintFlag) GetName() string {
+func (f *UintFlag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f UintFlag) IsRequired() bool {
+func (f *UintFlag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f UintFlag) TakesValue() bool {
+func (f *UintFlag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f UintFlag) GetUsage() string {
+func (f *UintFlag) GetUsage() string {
 	return f.Usage
 }
 
 // Apply populates the flag given the flag set and environment
-// Ignores errors
+func (f *UintFlag) Apply(set *flag.FlagSet) error {
-func (f UintFlag) Apply(set *flag.FlagSet) {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
-	_ = f.ApplyWithError(set)
+		if val != "" {
-}
+			valInt, err := strconv.ParseUint(val, 0, 64)
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f UintFlag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValInt, err := strconv.ParseUint(envVal, 0, 64)
 			if err != nil {
-			return fmt.Errorf("could not parse %s as uint value for flag %s: %s", envVal, f.Name, err)
+				return fmt.Errorf("could not parse %q as uint value for flag %s: %s", val, f.Name, err)
 			}
 
-		f.Value = uint(envValInt)
+			f.Value = uint(valInt)
+			f.HasBeenSet = true
+		}
 	}
 
-	eachName(f.Name, func(name string) {
+	for _, name := range f.Names() {
 		if f.Destination != nil {
 			set.UintVar(f.Destination, name, f.Value, f.Usage)
-			return
+			continue
 		}
 		set.Uint(name, f.Value, f.Usage)
-	})
+	}
 
 	return nil
 }
 
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f UintFlag) GetValue() string {
+func (f *UintFlag) GetValue() string {
 	return fmt.Sprintf("%d", f.Value)
 }
 
 // Uint looks up the value of a local UintFlag, returns
 // 0 if not found
 func (c *Context) Uint(name string) uint {
-	return lookupUint(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalUint looks up the value of a global UintFlag, returns
-// 0 if not found
-func (c *Context) GlobalUint(name string) uint {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupUint(name, fs)
 	}
 	return 0

vendor/github.com/urfave/cli/v2/flag_uint64.go

@@ -9,85 +9,84 @@ import (
 // Uint64Flag is a flag with type uint64
 type Uint64Flag struct {
 	Name        string
+	Aliases     []string
 	Usage       string
-	EnvVar      string
+	EnvVars     []string
 	FilePath    string
 	Required    bool
 	Hidden      bool
 	Value       uint64
+	DefaultText string
 	Destination *uint64
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *Uint64Flag) IsSet() bool {
+	return f.HasBeenSet
 }
 
 // String returns a readable representation of this value
 // (for usage defaults)
-func (f Uint64Flag) String() string {
+func (f *Uint64Flag) String() string {
 	return FlagStringer(f)
 }
 
-// GetName returns the name of the flag
+// Names returns the names of the flag
-func (f Uint64Flag) GetName() string {
+func (f *Uint64Flag) Names() []string {
-	return f.Name
+	return flagNames(f)
 }
 
 // IsRequired returns whether or not the flag is required
-func (f Uint64Flag) IsRequired() bool {
+func (f *Uint64Flag) IsRequired() bool {
 	return f.Required
 }
 
 // TakesValue returns true of the flag takes a value, otherwise false
-func (f Uint64Flag) TakesValue() bool {
+func (f *Uint64Flag) TakesValue() bool {
 	return true
 }
 
 // GetUsage returns the usage string for the flag
-func (f Uint64Flag) GetUsage() string {
+func (f *Uint64Flag) GetUsage() string {
 	return f.Usage
 }
 
+// Apply populates the flag given the flag set and environment
+func (f *Uint64Flag) Apply(set *flag.FlagSet) error {
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if val != "" {
+			valInt, err := strconv.ParseUint(val, 0, 64)
+			if err != nil {
+				return fmt.Errorf("could not parse %q as uint64 value for flag %s: %s", val, f.Name, err)
+			}
+
+			f.Value = valInt
+			f.HasBeenSet = true
+		}
+	}
+
+	for _, name := range f.Names() {
+		if f.Destination != nil {
+			set.Uint64Var(f.Destination, name, f.Value, f.Usage)
+			continue
+		}
+		set.Uint64(name, f.Value, f.Usage)
+	}
+
+	return nil
+}
+
 // GetValue returns the flags value as string representation and an empty
 // string if the flag takes no value at all.
-func (f Uint64Flag) GetValue() string {
+func (f *Uint64Flag) GetValue() string {
 	return fmt.Sprintf("%d", f.Value)
 }
 
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Uint64Flag) Apply(set *flag.FlagSet) {
-	_ = f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Uint64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
-		envValInt, err := strconv.ParseUint(envVal, 0, 64)
-		if err != nil {
-			return fmt.Errorf("could not parse %s as uint64 value for flag %s: %s", envVal, f.Name, err)
-		}
-
-		f.Value = envValInt
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Uint64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Uint64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
 // Uint64 looks up the value of a local Uint64Flag, returns
 // 0 if not found
 func (c *Context) Uint64(name string) uint64 {
-	return lookupUint64(name, c.flagSet)
+	if fs := lookupFlagSet(name, c); fs != nil {
-}
-
-// GlobalUint64 looks up the value of a global Uint64Flag, returns
-// 0 if not found
-func (c *Context) GlobalUint64(name string) uint64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
 		return lookupUint64(name, fs)
 	}
 	return 0

vendor/github.com/urfave/cli/v2/funcs.go

@@ -1,6 +1,6 @@
 package cli
 
-// BashCompleteFunc is an action to execute when the bash-completion flag is set
+// BashCompleteFunc is an action to execute when the shell completion flag is set
 type BashCompleteFunc func(*Context)
 
 // BeforeFunc is an action to execute before any subcommands are run, but after
@@ -23,7 +23,7 @@ type CommandNotFoundFunc func(*Context, string)
 // is displayed and the execution is interrupted.
 type OnUsageErrorFunc func(context *Context, err error, isSubcommand bool) error
 
-// ExitErrHandlerFunc is executed if provided in order to handle ExitError values
+// ExitErrHandlerFunc is executed if provided in order to handle exitError values
 // returned by Actions and Before/After functions.
 type ExitErrHandlerFunc func(context *Context, err error)
 
@@ -33,11 +33,11 @@ type FlagStringFunc func(Flag) string
 
 // FlagNamePrefixFunc is used by the default FlagStringFunc to create prefix
 // text for a flag's full name.
-type FlagNamePrefixFunc func(fullName, placeholder string) string
+type FlagNamePrefixFunc func(fullName []string, placeholder string) string
 
 // FlagEnvHintFunc is used by the default FlagStringFunc to annotate flag help
 // with the environment variable details.
-type FlagEnvHintFunc func(envVar, str string) string
+type FlagEnvHintFunc func(envVars []string, str string) string
 
 // FlagFileHintFunc is used by the default FlagStringFunc to annotate flag help
 // with the file path details.

vendor/github.com/urfave/cli/v2/go.mod

@@ -1,4 +1,4 @@
-module github.com/urfave/cli
+module github.com/urfave/cli/v2
 
 go 1.11
 

vendor/github.com/urfave/cli/v2/help.go

@@ -10,7 +10,7 @@ import (
 	"unicode/utf8"
 )
 
-var helpCommand = Command{
+var helpCommand = &Command{
 	Name:      "help",
 	Aliases:   []string{"h"},
 	Usage:     "Shows a list of commands or help for one command",
@@ -26,7 +26,7 @@ var helpCommand = Command{
 	},
 }
 
-var helpSubcommand = Command{
+var helpSubcommand = &Command{
 	Name:      "help",
 	Aliases:   []string{"h"},
 	Usage:     "Shows a list of commands or help for one command",
@@ -97,7 +97,7 @@ func DefaultAppComplete(c *Context) {
 	DefaultCompleteWithFlags(nil)(c)
 }
 
-func printCommandSuggestions(commands []Command, writer io.Writer) {
+func printCommandSuggestions(commands []*Command, writer io.Writer) {
 	for _, command := range commands {
 		if command.Hidden {
 			continue
@@ -135,10 +135,10 @@ func printFlagSuggestions(lastArg string, flags []Flag, writer io.Writer) {
 	cur := strings.TrimPrefix(lastArg, "-")
 	cur = strings.TrimPrefix(cur, "-")
 	for _, flag := range flags {
-		if bflag, ok := flag.(BoolFlag); ok && bflag.Hidden {
+		if bflag, ok := flag.(*BoolFlag); ok && bflag.Hidden {
 			continue
 		}
-		for _, name := range strings.Split(flag.GetName(), ",") {
+		for _, name := range flag.Names() {
 			name = strings.TrimSpace(name)
 			// this will get total count utf8 letters in flag name
 			count := utf8.RuneCountInString(name)
@@ -151,7 +151,7 @@ func printFlagSuggestions(lastArg string, flags []Flag, writer io.Writer) {
 				continue
 			}
 			// match if last argument matches this flag and it is not repeated
-			if strings.HasPrefix(name, cur) && cur != name && !cliArgContains(flag.GetName()) {
+			if strings.HasPrefix(name, cur) && cur != name && !cliArgContains(name) {
 				flagCompletion := fmt.Sprintf("%s%s", strings.Repeat("-", count), name)
 				_, _ = fmt.Fprintln(writer, flagCompletion)
 			}
@@ -207,7 +207,7 @@ func ShowCommandHelp(ctx *Context, command string) error {
 	}
 
 	if ctx.App.CommandNotFound == nil {
-		return NewExitError(fmt.Sprintf("No help topic for '%v'", command), 3)
+		return Exit(fmt.Sprintf("No help topic for '%v'", command), 3)
 	}
 
 	ctx.App.CommandNotFound(ctx, command)
@@ -216,7 +216,15 @@ func ShowCommandHelp(ctx *Context, command string) error {
 
 // ShowSubcommandHelp prints help for the given subcommand
 func ShowSubcommandHelp(c *Context) error {
+	if c == nil {
+		return nil
+	}
+
+	if c.Command != nil {
 		return ShowCommandHelp(c, c.Command.Name)
+	}
+
+	return ShowCommandHelp(c, "")
 }
 
 // ShowVersion prints the version number of the App
@@ -263,6 +271,7 @@ func printHelpCustom(out io.Writer, templ string, data interface{}, customFuncs
 
 	w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0)
 	t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
+
 	err := t.Execute(w, data)
 	if err != nil {
 		// If the writer is closed, t.Execute will fail, and there's nothing
@@ -281,24 +290,20 @@ func printHelp(out io.Writer, templ string, data interface{}) {
 
 func checkVersion(c *Context) bool {
 	found := false
-	if VersionFlag.GetName() != "" {
+	for _, name := range VersionFlag.Names() {
-		eachName(VersionFlag.GetName(), func(name string) {
+		if c.Bool(name) {
-			if c.GlobalBool(name) || c.Bool(name) {
 			found = true
 		}
-		})
 	}
 	return found
 }
 
 func checkHelp(c *Context) bool {
 	found := false
-	if HelpFlag.GetName() != "" {
+	for _, name := range HelpFlag.Names() {
-		eachName(HelpFlag.GetName(), func(name string) {
+		if c.Bool(name) {
-			if c.GlobalBool(name) || c.Bool(name) {
 			found = true
 		}
-		})
 	}
 	return found
 }
@@ -329,7 +334,7 @@ func checkShellCompleteFlag(a *App, arguments []string) (bool, []string) {
 	pos := len(arguments) - 1
 	lastArg := arguments[pos]
 
-	if lastArg != "--"+BashCompletionFlag.GetName() {
+	if lastArg != "--generate-bash-completion" {
 		return false, arguments
 	}
 

vendor/github.com/urfave/cli/v2/parse.go

@@ -14,10 +14,15 @@ type iterativeParser interface {
 // iteratively catch parsing errors. This way we achieve LR parsing without
 // transforming any arguments. Otherwise, there is no way we can discriminate
 // combined short options from common arguments that should be left untouched.
-func parseIter(set *flag.FlagSet, ip iterativeParser, args []string) error {
+// Pass `shellComplete` to continue parsing options on failure during shell
+// completion when, the user-supplied options may be incomplete.
+func parseIter(set *flag.FlagSet, ip iterativeParser, args []string, shellComplete bool) error {
 	for {
 		err := set.Parse(args)
 		if !ip.useShortOptionHandling() || err == nil {
+			if shellComplete {
+				return nil
+			}
 			return err
 		}
 

vendor/github.com/urfave/cli/v2/template.go

@@ -20,7 +20,6 @@ AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}:
    {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}}
 
 COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-
    {{.Name}}:{{range .VisibleCommands}}
      {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}}
    {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
@@ -63,7 +62,6 @@ USAGE:
    {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}
 
 COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-
    {{.Name}}:{{range .VisibleCommands}}
      {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}}
    {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
@@ -73,9 +71,9 @@ OPTIONS:
    {{end}}{{end}}
 `
 
-var MarkdownDocTemplate = `% {{ .App.Name }}(8) {{ .App.Description }}
+var MarkdownDocTemplate = `% {{ .App.Name }}(8){{ if .App.Description }} {{ .App.Description }}{{ end }}
-
+{{ range $a := .App.Authors }}
-% {{ .App.Author }}
+% {{ $a }}{{ end }}
 
 # NAME
 

vendor/modules.txt

@@ -38,8 +38,8 @@ github.com/src-d/gcfg/token
 github.com/src-d/gcfg/types
 # github.com/stretchr/testify v1.4.0
 github.com/stretchr/testify/assert
-# github.com/urfave/cli v1.22.2
+# github.com/urfave/cli/v2 v2.1.1
-github.com/urfave/cli
+github.com/urfave/cli/v2
 # github.com/xanzy/ssh-agent v0.2.1
 github.com/xanzy/ssh-agent
 # golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4