From 892aea138e84c43126ee26cba817c6aaf5a9f084 Mon Sep 17 00:00:00 2001
From: Sam Stephenson <sam@37signals.com>
Date: Wed, 23 Jan 2013 19:05:26 -0600
Subject: [PATCH] Export PS4 when RBENV_DEBUG is set for more informative debug
 output

---
 libexec/rbenv | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libexec/rbenv b/libexec/rbenv
index 76928647..93089fe9 100755
--- a/libexec/rbenv
+++ b/libexec/rbenv
@@ -1,7 +1,11 @@
 #!/usr/bin/env bash
 set -e
-[ -n "$RBENV_DEBUG" ] && set -x
 
+
+if [ -n "$RBENV_DEBUG" ]; then
+  export PS4='+ [${BASH_SOURCE##*/}:${LINENO}] '
+  set -x
+fi
 resolve_link() {
   $(type -p greadlink readlink | head -1) "$1"
 }