From 27fb33c6c94973ce62ffb2b8ee0d867a40176536 Mon Sep 17 00:00:00 2001
From: James Jiang <jiangjames1998@gmail.com>
Date: Sat, 15 Aug 2026 15:28:32 +1000
Subject: [PATCH] fix(nav): guard postNav against nil main menu

postNav.html computed len($menus) directly, panicking when
Site.Menus.main is nil (e.g. 404.html, or any content-less site).
nav.html was already patched for this in fix/nil-menu-guard, but
postNav.html was added afterward without the same guard.
---
 layouts/partials/postNav.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/layouts/partials/postNav.html b/layouts/partials/postNav.html
index 1144f262..0824c36a 100644
--- a/layouts/partials/postNav.html
+++ b/layouts/partials/postNav.html
@@ -10,7 +10,7 @@
     {{- $index := 0 -}}
     {{- $cur := .RelPermalink | relLangURL -}}
     {{- $menus := .Site.Menus.main -}}
-    {{- $len := len $menus -}}
+    {{- $len := 0 -}}{{- with $menus }}{{ $len = len . }}{{- end -}}
     {{- range $menus -}}
       <a
         href="{{- .URL | relURL -}}"