From d76f3d236914073057cb9b3c8e9bfde169d030c8 Mon Sep 17 00:00:00 2001
From: Ryan Caloras <rcaloras@gmail.com>
Date: Sun, 24 Jul 2016 20:16:23 -0400
Subject: [PATCH] Add option to disable subshells to help with #25

---
 bash-preexec.sh | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/bash-preexec.sh b/bash-preexec.sh
index 31aa937..13db194 100644
--- a/bash-preexec.sh
+++ b/bash-preexec.sh
@@ -11,7 +11,7 @@
 # Author: Ryan Caloras (ryan@bashhub.com)
 # Forked from Original Author: Glyph Lefkowitz
 #
-# V0.3.0
+# V0.3.1
 #
 
 # General Usage:
@@ -234,9 +234,17 @@ __bp_install() {
     # Adjust our HISTCONTROL Variable if needed.
     __bp_adjust_histcontrol
 
-    # Set so debug trap will work be invoked in subshells.
-    set -o functrace > /dev/null 2>&1
-    shopt -s extdebug > /dev/null 2>&1
+
+    # Issue #25. Setting debug trap for subshells causes sessions to exit for
+    # backgrounded subshell commands (e.g. (pwd)& ). Believe this is a bug in Bash.
+    #
+    # This option allows you to disable subshells.
+    if [[ -z "$__bp_disable_subshells" ]]; then
+
+        # Set so debug trap will work be invoked in subshells.
+        set -o functrace > /dev/null 2>&1
+        shopt -s extdebug > /dev/null 2>&1
+    fi;
 
 
     local existing_prompt_command