From 77f089a240a86856c4c571e35eb2f1d24988a287 Mon Sep 17 00:00:00 2001
From: Michiel Borkent <michielborkent@gmail.com>
Date: Mon, 5 Oct 2015 20:04:10 +0200
Subject: [PATCH] CLJS-1463: (js-debugger) should generate nil-returning
 expression

js-debugger macro can now be used in last position of an (implicit)
do. Previously this was not possible, because "return debugger;" was
generated, resulting in an js syntax error.
---
 src/main/clojure/cljs/core.cljc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/clojure/cljs/core.cljc b/src/main/clojure/cljs/core.cljc
index 8bd2ed3ff5..699af97610 100644
--- a/src/main/clojure/cljs/core.cljc
+++ b/src/main/clojure/cljs/core.cljc
@@ -864,9 +864,11 @@
   (core/list 'js* "~{} in ~{}" key obj))
 
 (core/defmacro js-debugger
-  "Emit JavaScript \"debugger;\" statement."
+  "Emit JavaScript \"debugger;\" statement"
   []
-  (core/list 'js* "debugger;"))
+  (core/list 'do
+             (core/list 'js* "debugger")
+             nil))
 
 (core/defmacro js-comment
   "Emit a top-level JavaScript multi-line comment. New lines will create a