diff --git a/dist/cache-save/index.js b/dist/cache-save/index.js
index de26f2f1..d763cfbc 100644
--- a/dist/cache-save/index.js
+++ b/dist/cache-save/index.js
@@ -52855,7 +52855,7 @@ function expand(str, isTop) {
   var isOptions = m.body.indexOf(',') >= 0;
   if (!isSequence && !isOptions) {
     // {a},b}
-    if (m.post.match(/,(?!,).*\}/)) {
+    if (m.post.match(/,.*\}/)) {
       str = m.pre + '{' + m.body + escClose + m.post;
       return expand(str);
     }
diff --git a/dist/setup/index.js b/dist/setup/index.js
index fd03fd71..b3162493 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -58171,7 +58171,7 @@ function expand(str, isTop) {
   var isOptions = m.body.indexOf(',') >= 0;
   if (!isSequence && !isOptions) {
     // {a},b}
-    if (m.post.match(/,(?!,).*\}/)) {
+    if (m.post.match(/,.*\}/)) {
       str = m.pre + '{' + m.body + escClose + m.post;
       return expand(str);
     }