From 2c79c214b5757de8beed5721cafcb0842b553a2a Mon Sep 17 00:00:00 2001
From: Aaron Kalin <akalin@martinisoftware.com>
Date: Tue, 29 Mar 2016 23:07:31 -0500
Subject: [PATCH] Don't trap with a non-existent command

This fixes #3655
---
 scripts/functions/environment | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/functions/environment b/scripts/functions/environment
index 1bfb22a929..6499ac9dcb 100644
--- a/scripts/functions/environment
+++ b/scripts/functions/environment
@@ -278,7 +278,7 @@ __rvm_teardown()
 
   if
     [[ "${_system_name}" == "OSX" ]] && __rvm_version_compare "${_system_version}" -ge 10.11 &&
-    [[ -n "$BASH" ]] && [[ ! -f "${HOME}/.bash_sessions_disable" ]]
+    [[ -n "$BASH" ]] && [[ ! -f "${HOME}/.bash_sessions_disable" ]] && is_a_function shell_session_update
   then trap 'shell_session_update' EXIT
   fi