Add editor packages

internal/editor/prompt.go

@@ -0,0 +1,33 @@
+package editor
+
+import (
+	"fmt"
+
+	"code.chimeric.al/dwrz/wen/internal/editor/buffer/line"
+	"code.chimeric.al/dwrz/wen/internal/editor/event"
+)
+
+func (e *Editor) saveAs(l line.Line) error {
+	if err := e.renameBuffer(e.active, l.String()); err != nil {
+		return fmt.Errorf("failed to save: %v", err)
+	}
+
+	return nil
+}
+
+func (e *Editor) quit(l line.Line) error {
+	switch l.String() {
+	case "y":
+		go func() {
+			e.events <- event.NewQuit()
+		}()
+
+		return nil
+
+	case "n":
+		return nil
+
+	default:
+		return fmt.Errorf("invalid selection")
+	}
+}