From 91c4605e6efd356ee719a290b306fefa68fc3d2d Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Fri, 9 Jul 2021 08:42:38 +0200
Subject: [PATCH] Bump github.com/alecthomas/kong from 0.2.16 to 0.2.17 (#18)

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.2.16 to 0.2.17.
- [Release notes](https://github.com/alecthomas/kong/releases)
- [Commits](https://github.com/alecthomas/kong/compare/v0.2.16...v0.2.17)

---
updated-dependencies:
- dependency-name: github.com/alecthomas/kong
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
---
 go.mod                                       |  2 +-
 go.sum                                       | 12 +++---
 vendor/github.com/alecthomas/kong/README.md  | 19 +++++----
 vendor/github.com/alecthomas/kong/build.go   |  1 +
 vendor/github.com/alecthomas/kong/context.go | 45 ++++++++++++--------
 vendor/github.com/alecthomas/kong/go.mod     |  6 +--
 vendor/github.com/alecthomas/kong/go.sum     | 15 +++++--
 vendor/github.com/alecthomas/kong/help.go    | 15 ++++++-
 vendor/github.com/alecthomas/kong/kong.go    | 15 +++++++
 vendor/github.com/alecthomas/kong/mapper.go  |  3 +-
 vendor/github.com/alecthomas/kong/model.go   | 22 ++++++++--
 vendor/github.com/alecthomas/kong/options.go | 33 +++++++++++++-
 vendor/github.com/alecthomas/kong/tag.go     |  6 +++
 vendor/modules.txt                           |  2 +-
 14 files changed, 148 insertions(+), 48 deletions(-)

diff --git a/go.mod b/go.mod
index 86a9c18..0cb865c 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/moia-oss/aws-cfg-generator
 go 1.16
 
 require (
-	github.com/alecthomas/kong v0.2.16
+	github.com/alecthomas/kong v0.2.17
 	github.com/aws/aws-sdk-go v1.38.51
 	github.com/rs/zerolog v1.22.0
 	github.com/smartystreets/goconvey v1.6.4 // indirect
diff --git a/go.sum b/go.sum
index c8edf82..c41431a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/alecthomas/kong v0.2.16 h1:F232CiYSn54Tnl1sJGTeHmx4vJDNLVP2b9yCVMOQwHQ=
-github.com/alecthomas/kong v0.2.16/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
+github.com/alecthomas/kong v0.2.17 h1:URDISCI96MIgcIlQyoCAlhOmrSw6pZScBNkctg8r0W0=
+github.com/alecthomas/kong v0.2.17/go.mod h1:ka3VZ8GZNPXv9Ov+j4YNLkI8mTuhXyr/0ktSlqIydQQ=
 github.com/aws/aws-sdk-go v1.38.51 h1:aKQmbVbwOCuQSd8+fm/MR3bq0QOsu9Q7S+/QEND36oQ=
 github.com/aws/aws-sdk-go v1.38.51/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -14,7 +14,6 @@ github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGw
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -27,8 +26,8 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
@@ -59,3 +58,6 @@ gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU=
 gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/vendor/github.com/alecthomas/kong/README.md b/vendor/github.com/alecthomas/kong/README.md
index 47bd1cb..6339210 100644
--- a/vendor/github.com/alecthomas/kong/README.md
+++ b/vendor/github.com/alecthomas/kong/README.md
@@ -420,14 +420,14 @@ interface it will be used to decode arguments into the field.
 Tags can be in two forms:
 
 1. Standard Go syntax, eg. `kong:"required,name='foo'"`.
-2. Bare tags, eg. `required name:"foo"`
+2. Bare tags, eg. `required:"" name:"foo"`
 
 Both can coexist with standard Tag parsing.
 
 Tag                    | Description
 -----------------------| -------------------------------------------
-`cmd`                  | If present, struct is a command.
-`arg`                  | If present, field is an argument.
+`cmd:""`               | If present, struct is a command.
+`arg:""`               | If present, field is an argument.
 `env:"X"`              | Specify envar to use for default value.
 `name:"X"`             | Long name, for overriding field name.
 `help:"X"`             | Help text.
@@ -437,10 +437,10 @@ Tag                    | Description
 `default:"1"`          | On a command, make it the default.
 `short:"X"`            | Short name, if flag.
 `aliases:"X,Y"`        | One or more aliases (for cmd).
-`required`             | If present, flag/arg is required.
-`optional`             | If present, flag/arg is optional.
-`hidden`               | If present, command or flag is hidden.
-`negatable`            | If present on a `bool` field, supports prefixing a flag with `--no-` to invert the default value
+`required:""`          | If present, flag/arg is required.
+`optional:""`          | If present, flag/arg is optional.
+`hidden:""`            | If present, command or flag is hidden.
+`negatable:""`         | If present on a `bool` field, supports prefixing a flag with `--no-` to invert the default value
 `format:"X"`           | Format for parsing input, if supported.
 `sep:"X"`              | Separator for sequences (defaults to ","). May be `none` to disable splitting.
 `mapsep:"X"`           | Separator for maps (defaults to ";"). May be `none` to disable splitting.
@@ -449,8 +449,9 @@ Tag                    | Description
 `xor:"X"`              | Exclusive OR group for flags. Only one flag in the group can be used which is restricted within the same command.
 `prefix:"X"`           | Prefix for all sub-flags.
 `set:"K=V"`            | Set a variable for expansion by child elements. Multiples can occur.
-`embed`                | If present, this field's children will be embedded in the parent. Useful for composition.
-`-`                    | Ignore the field. Useful for adding non-CLI fields to a configuration struct.
+`embed:""`             | If present, this field's children will be embedded in the parent. Useful for composition.
+`passthrough:""`       | If present, this positional argument stops flag parsing when encountered, as if `--` was processed before. Useful for external command wrappers, like `exec`.
+`-`                    | Ignore the field. Useful for adding non-CLI fields to a configuration struct. e.g `` `kong:"-"` ``
 
 ## Plugins
 
diff --git a/vendor/github.com/alecthomas/kong/build.go b/vendor/github.com/alecthomas/kong/build.go
index 0e3bc5f..4d9081a 100644
--- a/vendor/github.com/alecthomas/kong/build.go
+++ b/vendor/github.com/alecthomas/kong/build.go
@@ -195,6 +195,7 @@ func buildField(k *Kong, node *Node, v reflect.Value, ft reflect.StructField, fv
 		Tag:          tag,
 		Target:       fv,
 		Enum:         tag.Enum,
+		Passthrough:  tag.Passthrough,
 
 		// Flags are optional by default, and args are required by default.
 		Required: (!tag.Arg && tag.Required) || (tag.Arg && !tag.Optional),
diff --git a/vendor/github.com/alecthomas/kong/context.go b/vendor/github.com/alecthomas/kong/context.go
index 554e8b1..d132b7d 100644
--- a/vendor/github.com/alecthomas/kong/context.go
+++ b/vendor/github.com/alecthomas/kong/context.go
@@ -324,6 +324,21 @@ func (c *Context) Reset() error {
 	})
 }
 
+func (c *Context) endParsing() {
+	args := []string{}
+	for {
+		token := c.scan.Pop()
+		if token.Type == EOLToken {
+			break
+		}
+		args = append(args, token.String())
+	}
+	// Note: tokens must be pushed in reverse order.
+	for i := range args {
+		c.scan.PushTyped(args[len(args)-1-i], PositionalArgumentToken)
+	}
+}
+
 func (c *Context) trace(node *Node) (err error) { // nolint: gocyclo
 	positional := 0
 
@@ -349,18 +364,7 @@ func (c *Context) trace(node *Node) (err error) { // nolint: gocyclo
 				// Indicates end of parsing. All remaining arguments are treated as positional arguments only.
 				case v == "--":
 					c.scan.Pop()
-					args := []string{}
-					for {
-						token = c.scan.Pop()
-						if token.Type == EOLToken {
-							break
-						}
-						args = append(args, token.String())
-					}
-					// Note: tokens must be pushed in reverse order.
-					for i := range args {
-						c.scan.PushTyped(args[len(args)-1-i], PositionalArgumentToken)
-					}
+					c.endParsing()
 
 				// Long flag.
 				case strings.HasPrefix(v, "--"):
@@ -413,6 +417,11 @@ func (c *Context) trace(node *Node) (err error) { // nolint: gocyclo
 			// Ensure we've consumed all positional arguments.
 			if positional < len(node.Positional) {
 				arg := node.Positional[positional]
+
+				if arg.Passthrough {
+					c.endParsing()
+				}
+
 				err := arg.Parse(c.scan, c.getValue(arg))
 				if err != nil {
 					return err
@@ -626,12 +635,7 @@ func (c *Context) Apply() (string, error) {
 			panic("unsupported path ?!")
 		}
 		if value != nil {
-			v := c.getValue(value)
-			if value.Flag != nil && value.Flag.Negated {
-				v.SetBool(!v.Bool())
-			}
-
-			value.Apply(v)
+			value.Apply(c.getValue(value))
 		}
 	}
 
@@ -664,6 +668,11 @@ func (c *Context) parseFlag(flags []*Flag, match string) (err error) {
 			}
 			return err
 		}
+		if flag.Negated {
+			value := c.getValue(flag.Value)
+			value.SetBool(!value.Bool())
+			flag.Value.Apply(value)
+		}
 		c.Path = append(c.Path, &Path{Flag: flag})
 		return nil
 	}
diff --git a/vendor/github.com/alecthomas/kong/go.mod b/vendor/github.com/alecthomas/kong/go.mod
index 8bbc12d..9362c5c 100644
--- a/vendor/github.com/alecthomas/kong/go.mod
+++ b/vendor/github.com/alecthomas/kong/go.mod
@@ -2,9 +2,9 @@ module github.com/alecthomas/kong
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/pkg/errors v0.8.1
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/testify v1.2.2
+	github.com/pkg/errors v0.9.1
+	github.com/stretchr/testify v1.7.0
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )
 
 go 1.13
diff --git a/vendor/github.com/alecthomas/kong/go.sum b/vendor/github.com/alecthomas/kong/go.sum
index c935d68..d06ab36 100644
--- a/vendor/github.com/alecthomas/kong/go.sum
+++ b/vendor/github.com/alecthomas/kong/go.sum
@@ -1,8 +1,15 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/vendor/github.com/alecthomas/kong/help.go b/vendor/github.com/alecthomas/kong/help.go
index d9f65bf..2a9985f 100644
--- a/vendor/github.com/alecthomas/kong/help.go
+++ b/vendor/github.com/alecthomas/kong/help.go
@@ -48,6 +48,9 @@ type HelpOptions struct {
 	// The following exported templates can be used: kong.SpaceIndenter, kong.LineIndenter, kong.TreeIndenter
 	// The kong.SpaceIndenter will be used by default.
 	Indenter HelpIndenter
+
+	// Don't show the help associated with subcommands
+	NoExpandSubcommands bool
 }
 
 // Apply options to Kong as a configuration option.
@@ -62,6 +65,11 @@ type HelpProvider interface {
 	Help() string
 }
 
+// PlaceHolderProvider can be implemented by mappers to provide custom placeholder text.
+type PlaceHolderProvider interface {
+	PlaceHolder(flag *Flag) string
+}
+
 // HelpIndenter is used to indent new layers in the help tree.
 type HelpIndenter func(prefix string) string
 
@@ -180,7 +188,12 @@ func printNodeDetail(w *helpWriter, node *Node, hide bool) {
 	if !w.FlagsLast {
 		printFlags()
 	}
-	cmds := node.Leaves(hide)
+	var cmds []*Node
+	if w.NoExpandSubcommands {
+		cmds = node.Children
+	} else {
+		cmds = node.Leaves(hide)
+	}
 	if len(cmds) > 0 {
 		iw := w.Indent()
 		if w.Tree {
diff --git a/vendor/github.com/alecthomas/kong/kong.go b/vendor/github.com/alecthomas/kong/kong.go
index b59d61c..9c0e437 100644
--- a/vendor/github.com/alecthomas/kong/kong.go
+++ b/vendor/github.com/alecthomas/kong/kong.go
@@ -66,6 +66,7 @@ type Kong struct {
 
 	// Set temporarily by Options. These are applied after build().
 	postBuildOptions []Option
+	dynamicCommands  []*dynamicCommand
 }
 
 // New creates a new Kong parser on grammar.
@@ -106,6 +107,20 @@ func New(grammar interface{}, options ...Option) (*Kong, error) {
 	k.Model = model
 	k.Model.HelpFlag = k.helpFlag
 
+	// Synthesise command nodes.
+	for _, dcmd := range k.dynamicCommands {
+		tag := newEmptyTag()
+		tag.Name = dcmd.name
+		tag.Help = dcmd.help
+		tag.Group = dcmd.group
+		tag.Cmd = true
+		v := reflect.Indirect(reflect.ValueOf(dcmd.cmd))
+		buildChild(k, k.Model.Node, CommandNode, reflect.Value{}, reflect.StructField{
+			Name: dcmd.name,
+			Type: v.Type(),
+		}, v, tag, dcmd.name, map[string]bool{})
+	}
+
 	for _, option := range k.postBuildOptions {
 		if err = option.Apply(k); err != nil {
 			return nil, err
diff --git a/vendor/github.com/alecthomas/kong/mapper.go b/vendor/github.com/alecthomas/kong/mapper.go
index 7eb77fb..f5e1a3f 100644
--- a/vendor/github.com/alecthomas/kong/mapper.go
+++ b/vendor/github.com/alecthomas/kong/mapper.go
@@ -43,6 +43,7 @@ func (r *DecodeContext) WithScanner(scan *Scanner) *DecodeContext {
 }
 
 // MapperValue may be implemented by fields in order to provide custom mapping.
+// Mappers may additionally implement PlaceHolderProvider to provide custom placeholder text.
 type MapperValue interface {
 	Decode(ctx *DecodeContext) error
 }
@@ -84,7 +85,7 @@ func (m *binaryUnmarshalerAdapter) Decode(ctx *DecodeContext, target reflect.Val
 	if err != nil {
 		return err
 	}
-	if target.Type().Implements(textUnmarshalerType) {
+	if target.Type().Implements(binaryUnmarshalerType) {
 		return target.Interface().(encoding.BinaryUnmarshaler).UnmarshalBinary([]byte(value))
 	}
 	return target.Addr().Interface().(encoding.BinaryUnmarshaler).UnmarshalBinary([]byte(value))
diff --git a/vendor/github.com/alecthomas/kong/model.go b/vendor/github.com/alecthomas/kong/model.go
index 4ce2456..da64356 100644
--- a/vendor/github.com/alecthomas/kong/model.go
+++ b/vendor/github.com/alecthomas/kong/model.go
@@ -146,11 +146,17 @@ func (n *Node) Summary() string {
 		summary += " " + flags
 	}
 	args := []string{}
+	optional := 0
 	for _, arg := range n.Positional {
-		args = append(args, arg.Summary())
+		argSummary := arg.Summary()
+		if arg.Tag.Optional {
+			optional++
+			argSummary = strings.TrimRight(argSummary, "]")
+		}
+		args = append(args, argSummary)
 	}
 	if len(args) != 0 {
-		summary += " " + strings.Join(args, " ")
+		summary += " " + strings.Join(args, " ") + strings.Repeat("]", optional)
 	} else if len(n.Children) > 0 {
 		summary += " <command>"
 	}
@@ -230,6 +236,7 @@ type Value struct {
 	Set          bool   // Set to true when this value is set through some mechanism.
 	Format       string // Formatting directive, if applicable.
 	Position     int    // Position (for positional arguments).
+	Passthrough  bool   // Set to true to stop flag parsing when encountered.
 }
 
 // EnumMap returns a map of the enums in this value.
@@ -298,6 +305,11 @@ func (v *Value) IsBool() bool {
 	return v.Target.Kind() == reflect.Bool
 }
 
+// IsCounter returns true if the value is a counter.
+func (v *Value) IsCounter() bool {
+	return v.Tag.Type == "counter"
+}
+
 // Parse tokens into value, parse, and validate, but do not write to the field.
 func (v *Value) Parse(scan *Scanner, target reflect.Value) (err error) {
 	defer func() {
@@ -377,7 +389,7 @@ func (f *Flag) String() string {
 	if f.Short != 0 {
 		out = fmt.Sprintf("-%c, %s", f.Short, out)
 	}
-	if !f.IsBool() {
+	if !f.IsBool() && !f.IsCounter() {
 		out += "=" + f.FormatPlaceHolder()
 	}
 	return out
@@ -385,6 +397,10 @@ func (f *Flag) String() string {
 
 // FormatPlaceHolder formats the placeholder string for a Flag.
 func (f *Flag) FormatPlaceHolder() string {
+	placeholderHelper, ok := f.Value.Mapper.(PlaceHolderProvider)
+	if ok {
+		return placeholderHelper.PlaceHolder(f)
+	}
 	tail := ""
 	if f.Value.IsSlice() && f.Value.Tag.Sep != -1 {
 		tail += string(f.Value.Tag.Sep) + "..."
diff --git a/vendor/github.com/alecthomas/kong/options.go b/vendor/github.com/alecthomas/kong/options.go
index ef83970..b7c4364 100644
--- a/vendor/github.com/alecthomas/kong/options.go
+++ b/vendor/github.com/alecthomas/kong/options.go
@@ -54,6 +54,28 @@ func Exit(exit func(int)) Option {
 	})
 }
 
+type dynamicCommand struct {
+	name  string
+	help  string
+	group string
+	cmd   interface{}
+}
+
+// DynamicCommand registers a dynamically constructed command with the root of the CLI.
+//
+// This is useful for command-line structures that are extensible via user-provided plugins.
+func DynamicCommand(name, help, group string, cmd interface{}) Option {
+	return OptionFunc(func(k *Kong) error {
+		k.dynamicCommands = append(k.dynamicCommands, &dynamicCommand{
+			name:  name,
+			help:  help,
+			group: group,
+			cmd:   cmd,
+		})
+		return nil
+	})
+}
+
 // NoDefaultHelp disables the default help flags.
 func NoDefaultHelp() Option {
 	return OptionFunc(func(k *Kong) error {
@@ -307,9 +329,16 @@ func Configuration(loader ConfigurationLoader, paths ...string) Option {
 	return OptionFunc(func(k *Kong) error {
 		k.loader = loader
 		for _, path := range paths {
-			if _, err := os.Stat(ExpandPath(path)); os.IsNotExist(err) {
-				continue
+			f, err := os.Open(ExpandPath(path))
+			if err != nil {
+				if os.IsNotExist(err) || os.IsPermission(err) {
+					continue
+				}
+
+				return err
 			}
+			f.Close()
+
 			resolver, err := k.LoadConfig(path)
 			if err != nil {
 				return errors.Wrap(err, path)
diff --git a/vendor/github.com/alecthomas/kong/tag.go b/vendor/github.com/alecthomas/kong/tag.go
index deffd86..4d640c9 100644
--- a/vendor/github.com/alecthomas/kong/tag.go
+++ b/vendor/github.com/alecthomas/kong/tag.go
@@ -34,6 +34,7 @@ type Tag struct {
 	Embed       bool
 	Aliases     []string
 	Negatable   bool
+	Passthrough bool
 
 	// Storage for all tag keys for arbitrary lookups.
 	items map[string][]string
@@ -184,6 +185,11 @@ func parseTag(fv reflect.Value, ft reflect.StructField) *Tag {
 		t.PlaceHolder = strings.ToUpper(dashedString(fv.Type().Name()))
 	}
 	t.Enum = t.Get("enum")
+	passthrough := t.Has("passthrough")
+	if passthrough && !t.Arg {
+		fail("passthrough only makes sense for positional arguments")
+	}
+	t.Passthrough = passthrough
 	return t
 }
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 4ee75a4..691194f 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1,4 +1,4 @@
-# github.com/alecthomas/kong v0.2.16
+# github.com/alecthomas/kong v0.2.17
 ## explicit
 github.com/alecthomas/kong
 # github.com/aws/aws-sdk-go v1.38.51