Use StringArrayVarP for --include and --exclude flags (#196)

* Use StringArrayVarP for --include/--exclude

Replace `StringSliceVarP` with `StringArrayVarP` for the --include and
--exclude flags so regex strings can contain colons.

* Update README.md

Co-authored-by: Kazuki Suda <kazuki.suda@gmail.com>

README.md

@@ -70,11 +70,11 @@ The `pod` query is a regular expression so you could provide `"web-\w"` to tail
  `--container-state`         | `running` | Tail containers with state in running, waiting or terminated. To specify multiple states, repeat this or set comma-separated value.
  `--context`                 |           | Kubernetes context to use. Default to current context configured in kubeconfig.
  `--ephemeral-containers`    | `true`    | Include or exclude ephemeral containers.
- `--exclude`, `-e`           |           | Log lines to exclude. (regular expression)
+ `--exclude`, `-e`           | `[]`      | Log lines to exclude. (regular expression)
  `--exclude-container`, `-E` |           | Container name to exclude when multiple containers in pod. (regular expression)
  `--exclude-pod`             |           | Pod name to exclude. (regular expression)
  `--field-selector`          |           | Selector (field query) to filter on. If present, default to ".*" for the pod-query.
- `--include`, `-i`           |           | Log lines to include. (regular expression)
+ `--include`, `-i`           | `[]`      | Log lines to include. (regular expression)
  `--init-containers`         | `true`    | Include or exclude init containers.
  `--kubeconfig`              |           | Path to kubeconfig file to use. Default to KUBECONFIG variable then ~/.kube/config path.
  `--namespace`, `-n`         |           | Kubernetes namespace to use. Default to namespace configured in kubernetes context. To specify multiple namespaces, repeat this or set comma-separated value.

cmd/cmd.go

@@ -325,10 +325,10 @@ func (o *options) AddFlags(fs *pflag.FlagSet) {
 	fs.StringVarP(&o.container, "container", "c", o.container, "Container name when multiple containers in pod. (regular expression)")
 	fs.StringSliceVar(&o.containerStates, "container-state", o.containerStates, "Tail containers with state in running, waiting or terminated. To specify multiple states, repeat this or set comma-separated value.")
 	fs.StringVar(&o.context, "context", o.context, "Kubernetes context to use. Default to current context configured in kubeconfig.")
-	fs.StringSliceVarP(&o.exclude, "exclude", "e", o.exclude, "Log lines to exclude. (regular expression)")
+	fs.StringArrayVarP(&o.exclude, "exclude", "e", o.exclude, "Log lines to exclude. (regular expression)")
 	fs.StringVarP(&o.excludeContainer, "exclude-container", "E", o.excludeContainer, "Container name to exclude when multiple containers in pod. (regular expression)")
 	fs.StringVar(&o.excludePod, "exclude-pod", o.excludePod, "Pod name to exclude. (regular expression)")
-	fs.StringSliceVarP(&o.include, "include", "i", o.include, "Log lines to include. (regular expression)")
+	fs.StringArrayVarP(&o.include, "include", "i", o.include, "Log lines to include. (regular expression)")
 	fs.BoolVar(&o.initContainers, "init-containers", o.initContainers, "Include or exclude init containers.")
 	fs.BoolVar(&o.ephemeralContainers, "ephemeral-containers", o.ephemeralContainers, "Include or exclude ephemeral containers.")
 	fs.StringVar(&o.kubeConfig, "kubeconfig", o.kubeConfig, "Path to kubeconfig file to use. Default to KUBECONFIG variable then ~/.kube/config path.")