From 93f95e32690ce499e5babf9062bfd9b1becec2af Mon Sep 17 00:00:00 2001
From: defnlnotme <187655089+defnlnotme@users.noreply.github.com>
Date: Thu, 9 Oct 2025 06:23:16 +0200
Subject: [PATCH] fix active repl check

fixes execution on julia 1.12
---
 src/alert_repl.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/alert_repl.jl b/src/alert_repl.jl
index e4e0a51..834ff57 100644
--- a/src/alert_repl.jl
+++ b/src/alert_repl.jl
@@ -46,7 +46,7 @@ end
 
 function init_alert_REPL!()
     if VERSION >= v"1.5"
-        if isdefined(Base, :active_repl_backend)
+        if isdefined(Base, :active_repl_backend) && !isnothing(Base.active_repl_backend)
             pushfirst!(Base.active_repl_backend.ast_transforms, with_repl_alert)
         else
             pushfirst!(REPL.repl_ast_transforms, with_repl_alert)