From 2d82095aa1bad0b91abe413573dea2e05dde7433 Mon Sep 17 00:00:00 2001
From: David Little <david.frank.little@gmail.com>
Date: Fri, 20 Aug 2021 14:36:18 -0400
Subject: [PATCH] fix: graceful REPL injection recovery

---
 src/Alert.jl | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Alert.jl b/src/Alert.jl
index 92b61b3..aec06a5 100644
--- a/src/Alert.jl
+++ b/src/Alert.jl
@@ -263,7 +263,14 @@ end
 
 function init_alert_REPL!()
     if VERSION >= v"1.5"
-        push!(Base.active_repl_backend.ast_transforms, with_repl_alert)
+        try
+            push!(Base.active_repl_backend.ast_transforms, with_repl_alert)
+        catch e
+            @error "Unable to load REPL backend for Alert: \n"*                    
+                mapreduce(*, Base.catch_stack()) do (e, bt)
+                    sprint(showerror, e, bt)
+                end
+            end
     end
 end