Improve cmd.Help sections as params

cmd/help.go

@@ -7,13 +7,24 @@ import (
 	"log"
 
 	"github.com/rwxrob/bonzai"
+	"github.com/rwxrob/bonzai/comp"
 )
 
+// Help provides help documentation for the caller allowing the specific
+// section of help wanted to be passed as a tab-completable parameter.
 var Help = &bonzai.Cmd{
-	Name:    `help`,
-	Aliases: []string{"h"},
-	Call: func(none ...string) error {
-		log.Println("would print help")
+	Name: `help`,
+	Params: []string{
+		"name", "title", "summary", "params", "commands", "description",
+		"examples", "legal", "copyright", "license", "version",
+	},
+	Completer: comp.Help,
+	Call: func(caller *bonzai.Cmd, args ...string) error {
+		section := "all"
+		if len(args) > 0 {
+			section = args[0]
+		}
+		log.Printf("would show help about %v %v", caller.Name, section)
 		return nil
 	},
 }