js: Prep mouse_find_predicate for drag selection

We don't want to bail if we bottomed out, unless an amount was
specified.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/templates/script.ts b/templates/script.ts
index 3557357f46f08e0e6f298e210ed5e548285a9981..dc63f2f4a7163c5e5bf4c7892d7ba4961d278c61 100644 (file)
--- a/templates/script.ts
+++ b/templates/script.ts
@@ -861,8 +861,11 @@ function mouse_find_predicate(
     let i = clicked.length;
     uelem = uelem.previousElementSibling as any;
     if (uelem == pieces_marker) {
-      add_log_message(`Not enough pieces!  Stopped after ${i}.`);
-      return null;
+      if (wanted != null) {
+       add_log_message(`Not enough pieces!  Stopped after ${i}.`);
+       return null;
+      }
+      break;
     }
     let piece = uelem.dataset.piece!;
     let p = pieces[piece];