Implement basic tab completion support

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

1 files changed, 12 insertions, 3 deletions

diff --git a/commands/account/select.go b/commands/account/select.go
index 707f6c9..70e08ac 100644
--- a/commands/account/select.go
+++ b/commands/account/select.go
@@ -7,12 +7,21 @@ import (
 	"git.sr.ht/~sircmpwn/aerc/widgets"
 )
 
+type SelectMessage struct{}
+
 func init() {
-	register("select", SelectMessage)
-	register("select-message", SelectMessage)
+	register(SelectMessage{})
+}
+
+func (_ SelectMessage) Aliases() []string {
+	return []string{"select", "select-message"}
+}
+
+func (_ SelectMessage) Complete(aerc *widgets.Aerc, args []string) []string {
+	return nil
 }
 
-func SelectMessage(aerc *widgets.Aerc, args []string) error {
+func (_ SelectMessage) Execute(aerc *widgets.Aerc, args []string) error {
 	if len(args) != 2 {
 		return errors.New("Usage: :select-message <n>")
 	}