From fdd88e0af62bd7d9702f5743b7f68d03a1483a2f Mon Sep 17 00:00:00 2001
From: Suzanne Soy <ligo@suzanne.soy>
Date: Thu, 24 Jun 2021 03:07:31 +0100
Subject: [PATCH] bugfix for zip export

---
 git-tutorial.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/git-tutorial.js b/git-tutorial.js
index de9da3d..1b0aee1 100644
--- a/git-tutorial.js
+++ b/git-tutorial.js
@@ -600,9 +600,12 @@ function ___copyzip_click(id) {
     }
     if (fs[paths[i]] === null) {
       // directory
-      h.subfolders[path_components[path_components.length - 1]] = {
-        subfolders: {},
-        files: []
+      var last_component = path_components[path_components.length - 1];
+      if (!h.subfolders.hasOwnProperty(last_component)) {
+        h.subfolders[last_component] = {
+          subfolders: {},
+          files: []
+        };
       }
     } else {
       // file