Implement basic tab completion support

Tab completion currently only works on commands. Contextual completion
will be added in the future.

1 files changed, 13 insertions, 3 deletions

diff --git a/commands/help.go b/commands/help.go
index e269fcf..c4ed4ff 100644
--- a/commands/help.go
+++ b/commands/help.go
@@ -6,16 +6,26 @@ import (
 	"git.sr.ht/~sircmpwn/aerc/widgets"
 )
 
+type Help struct{}
+
 func init() {
-	register("help", Help)
+	register(Help{})
+}
+
+func (_ Help) Aliases() []string {
+	return []string{"help"}
+}
+
+func (_ Help) Complete(aerc *widgets.Aerc, args []string) []string {
+	return nil
 }
 
-func Help(aerc *widgets.Aerc, args []string) error {
+func (_ Help) Execute(aerc *widgets.Aerc, args []string) error {
 	page := "aerc"
 	if len(args) == 2 {
 		page = "aerc-" + args[1]
 	} else if len(args) > 2 {
 		return errors.New("Usage: help [topic]")
 	}
-	return Term(aerc, []string{"term", "man", page})
+	return TermCore(aerc, []string{"term", "man", page})
 }