From 7faff21eb3c8384706014c77bdd119cd1f774766 Mon Sep 17 00:00:00 2001
From: Casper van Zoest <167522110+casper-embion@users.noreply.github.com>
Date: Wed, 20 Nov 2024 15:29:21 +0000
Subject: [PATCH] Allow default when (custom) function returns null

---
 src/renderer/processor.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/renderer/processor.rs b/src/renderer/processor.rs
index 56c6c486..932910b0 100644
--- a/src/renderer/processor.rs
+++ b/src/renderer/processor.rs
@@ -410,7 +410,12 @@ impl<'a> Processor<'a> {
                 }
             }
             ExprVal::FunctionCall(ref fn_call) => {
-                self.eval_tera_fn_call(fn_call, &mut needs_escape)?
+                let result = self.eval_tera_fn_call(fn_call, &mut needs_escape)?;
+                if result.is_null() && expr.has_default_filter() {
+                    self.get_default_value(expr)?
+                } else {
+                    result
+                }
             }
             ExprVal::MacroCall(ref macro_call) => {
                 let val = render_to_string(