From e7206741180ecdd777bebc48dcf395a8fa36786c Mon Sep 17 00:00:00 2001
From: Ariyo Israel Gbemisola <igbemisola53@gmail.com>
Date: Fri, 5 Jun 2026 13:01:41 -0400
Subject: [PATCH] fix: handle failed embed fetches and falsy cached() returns

- embed.js: add error handler to get().then() so a failed :include
  fetch calls next('') instead of silently stalling page rendering
- core/util/core.js: use  instead of  in
  cached() so functions that legitimately return falsy values ('' or 0)
  have their results stored and reused correctly
---
 src/core/render/embed.js | 2 +-
 src/core/util/core.js    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/render/embed.js b/src/core/render/embed.js
index 08d6c6b9a8..ed57609753 100644
--- a/src/core/render/embed.js
+++ b/src/core/render/embed.js
@@ -82,7 +82,7 @@ function walkFetchEmbed({ embedTokens, compile, fetch }, cb) {
     };
 
     if (token.embed.url) {
-      get(token.embed.url).then(next);
+      get(token.embed.url).then(next, _err => next(''));
     } else {
       next(token.embed.html);
     }
diff --git a/src/core/util/core.js b/src/core/util/core.js
index fc61809422..65f7edefbb 100644
--- a/src/core/util/core.js
+++ b/src/core/util/core.js
@@ -11,7 +11,7 @@ export function cached(fn) {
   return function (str) {
     const key = isPrimitive(str) ? str : JSON.stringify(str);
     const hit = cache[key];
-    return hit || (cache[key] = fn(str));
+    return hit !== undefined ? hit : (cache[key] = fn(str));
   };
 }