From 75013db3cc5b99dfe65ba064c37747eb0c4af7ee Mon Sep 17 00:00:00 2001
From: Patrick Ferris <patrick@sirref.org>
Date: Sat, 7 Feb 2026 13:33:51 +0000
Subject: [PATCH] Built_in: recognise 0 as EXIT for trap

---
 src/lib/built_ins.ml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib/built_ins.ml b/src/lib/built_ins.ml
index 9f88937..5b6251d 100644
--- a/src/lib/built_ins.ml
+++ b/src/lib/built_ins.ml
@@ -354,6 +354,7 @@ module Trap = struct
         let s = String.lowercase_ascii s in
         try
           match int_of_string_opt s with
+          | Some 0 -> Ok `Exit
           | Some n -> Ok (`Signal (Eunix.Signals.of_int n))
           | None -> (
               match s with
-- 
2.51.2