Make "BoolFlag" booleans not require =true

docs/user-guide/kubectl/kubectl_config_set-cluster.md

@@ -64,8 +64,8 @@ $ kubectl config set-cluster e2e --insecure-skip-tls-verify=true
 ```
       --api-version="": api-version for the cluster entry in kubeconfig
       --certificate-authority="": path to certificate-authority for the cluster entry in kubeconfig
-      --embed-certs=false: embed-certs for the cluster entry in kubeconfig
-      --insecure-skip-tls-verify=false: insecure-skip-tls-verify for the cluster entry in kubeconfig
+      --embed-certs[=false]: embed-certs for the cluster entry in kubeconfig
+      --insecure-skip-tls-verify[=false]: insecure-skip-tls-verify for the cluster entry in kubeconfig
       --server="": server for the cluster entry in kubeconfig
 ```
 
@@ -97,7 +97,7 @@ $ kubectl config set-cluster e2e --insecure-skip-tls-verify=true
 
 * [kubectl config](kubectl_config.md)	 - config modifies kubeconfig files
 
-###### Auto generated by spf13/cobra on 8-Dec-2015
+###### Auto generated by spf13/cobra on 8-Jan-2016
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_config_set-cluster.md?pixel)]()

docs/user-guide/kubectl/kubectl_config_set-credentials.md

@@ -77,7 +77,7 @@ $ kubectl config set-credentials cluster-admin --client-certificate=~/.kube/admi
 ```
       --client-certificate="": path to client-certificate for the user entry in kubeconfig
       --client-key="": path to client-key for the user entry in kubeconfig
-      --embed-certs=false: embed client cert/key for the user entry in kubeconfig
+      --embed-certs[=false]: embed client cert/key for the user entry in kubeconfig
       --password="": password for the user entry in kubeconfig
       --token="": token for the user entry in kubeconfig
       --username="": username for the user entry in kubeconfig
@@ -110,7 +110,7 @@ $ kubectl config set-credentials cluster-admin --client-certificate=~/.kube/admi
 
 * [kubectl config](kubectl_config.md)	 - config modifies kubeconfig files
 
-###### Auto generated by spf13/cobra on 8-Dec-2015
+###### Auto generated by spf13/cobra on 8-Jan-2016
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_config_set-credentials.md?pixel)]()

docs/user-guide/kubectl/kubectl_config_view.md

@@ -61,7 +61,7 @@ $ kubectl config view -o template --template='{{range .users}}{{ if eq .name "e2
 
 ```
       --flatten[=false]: flatten the resulting kubeconfig file into self contained output (useful for creating portable kubeconfig files)
-      --merge=true: merge together the full hierarchy of kubeconfig files
+      --merge[=true]: merge together the full hierarchy of kubeconfig files
       --minify[=false]: remove all information not used by current-context from the output
       --no-headers[=false]: When using the default output, don't print headers.
   -o, --output="": Output format. One of: json|yaml|wide|name|go-template=...|go-template-file=...|jsonpath=...|jsonpath-file=... See golang template [http://golang.org/pkg/text/template/#pkg-overview] and jsonpath template [http://releases.k8s.io/HEAD/docs/user-guide/jsonpath.md].
@@ -104,7 +104,7 @@ $ kubectl config view -o template --template='{{range .users}}{{ if eq .name "e2
 
 * [kubectl config](kubectl_config.md)	 - config modifies kubeconfig files
 
-###### Auto generated by spf13/cobra on 8-Dec-2015
+###### Auto generated by spf13/cobra on 8-Jan-2016
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_config_view.md?pixel)]()

pkg/kubectl/cmd/config/create_authinfo.go

@@ -95,7 +95,8 @@ func NewCmdConfigSetAuthInfo(out io.Writer, configAccess ConfigAccess) *cobra.Co
 	cmd.Flags().Var(&options.token, clientcmd.FlagBearerToken, clientcmd.FlagBearerToken+" for the user entry in kubeconfig")
 	cmd.Flags().Var(&options.username, clientcmd.FlagUsername, clientcmd.FlagUsername+" for the user entry in kubeconfig")
 	cmd.Flags().Var(&options.password, clientcmd.FlagPassword, clientcmd.FlagPassword+" for the user entry in kubeconfig")
-	cmd.Flags().Var(&options.embedCertData, clientcmd.FlagEmbedCerts, "embed client cert/key for the user entry in kubeconfig")
+	f := cmd.Flags().VarPF(&options.embedCertData, clientcmd.FlagEmbedCerts, "", "embed client cert/key for the user entry in kubeconfig")
+	f.NoOptDefVal = "true"
 
 	return cmd
 }

pkg/kubectl/cmd/config/create_cluster.go

@@ -79,9 +79,11 @@ func NewCmdConfigSetCluster(out io.Writer, configAccess ConfigAccess) *cobra.Com
 
 	cmd.Flags().Var(&options.server, clientcmd.FlagAPIServer, clientcmd.FlagAPIServer+" for the cluster entry in kubeconfig")
 	cmd.Flags().Var(&options.apiVersion, clientcmd.FlagAPIVersion, clientcmd.FlagAPIVersion+" for the cluster entry in kubeconfig")
-	cmd.Flags().Var(&options.insecureSkipTLSVerify, clientcmd.FlagInsecure, clientcmd.FlagInsecure+" for the cluster entry in kubeconfig")
+	f := cmd.Flags().VarPF(&options.insecureSkipTLSVerify, clientcmd.FlagInsecure, "", clientcmd.FlagInsecure+" for the cluster entry in kubeconfig")
+	f.NoOptDefVal = "true"
 	cmd.Flags().Var(&options.certificateAuthority, clientcmd.FlagCAFile, "path to "+clientcmd.FlagCAFile+" for the cluster entry in kubeconfig")
-	cmd.Flags().Var(&options.embedCAData, clientcmd.FlagEmbedCerts, clientcmd.FlagEmbedCerts+" for the cluster entry in kubeconfig")
+	f = cmd.Flags().VarPF(&options.embedCAData, clientcmd.FlagEmbedCerts, "", clientcmd.FlagEmbedCerts+" for the cluster entry in kubeconfig")
+	f.NoOptDefVal = "true"
 
 	return cmd
 }

pkg/kubectl/cmd/config/view.go

@@ -82,7 +82,8 @@ func NewCmdConfigView(out io.Writer, ConfigAccess ConfigAccess) *cobra.Command {
 	cmd.Flags().Set("output", defaultOutputFormat)
 
 	options.Merge.Default(true)
-	cmd.Flags().Var(&options.Merge, "merge", "merge together the full hierarchy of kubeconfig files")
+	f := cmd.Flags().VarPF(&options.Merge, "merge", "", "merge together the full hierarchy of kubeconfig files")
+	f.NoOptDefVal = "true"
 	cmd.Flags().BoolVar(&options.RawByteData, "raw", false, "display raw byte data")
 	cmd.Flags().BoolVar(&options.Flatten, "flatten", false, "flatten the resulting kubeconfig file into self contained output (useful for creating portable kubeconfig files)")
 	cmd.Flags().BoolVar(&options.Minify, "minify", false, "remove all information not used by current-context from the output")

pkg/util/bool_flag.go

@@ -22,8 +22,9 @@ import (
 )
 
 // BoolFlag is a boolean flag compatible with flags and pflags that keeps track of whether it had a value supplied or not.
-// Beware!  If you use this type, you must actually specify --flag-name=true, you cannot leave it as --flag-name and still have
-// the value set
+// Getting this flag to act like a normal bool, where true/false are not required needs a little bit of extra code, example:
+//    f := cmd.Flags().VarPF(&BoolFlagVar, "flagname", "", "help about the flag")
+//    f.NoOptDefVal = "true"
 type BoolFlag struct {
 	// If Set has been invoked this value is true
 	provided bool