Limit the number of selections displayed in the footer

kittens/choose_files/footer.go

@@ -72,13 +72,18 @@ func (h *Handler) draw_footer() (num_lines int, err error) {
 			flush()
 		}
 		if len(h.state.selections) > 0 {
+			before := len(lines)
 			w("", "  Selected:", nil, "", nil)
-			for _, s := range h.state.selections {
+			for i, s := range h.state.selections {
 				text := s
 				if rel, rerr := filepath.Rel(h.state.CurrentDir(), s); rerr == nil {
 					text = rel
 				}
 				w("  ", text, nil, s, func(abspath string) { h.state.ToggleSelection(abspath) })
+				if len(lines)-before > 2 && len(h.state.selections)-i-1 > 3 {
+					w("  ", fmt.Sprintf("and %d more…", len(h.state.selections)-1-i), nil, "", nil)
+					break
+				}
 			}
 			flush()
 		}