From 8ee2f2657a088851d0aa75736c7b0305a10522f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mislav=20Marohnic=CC=81?= <mislav.marohnic@gmail.com>
Date: Sat, 29 Dec 2012 00:17:01 +0100
Subject: [PATCH] avoid prepending system ruby to PATH

System ruby is already on PATH (that's the definition of system ruby) and by
duplicating its path by putting it in front, we can break the user's
environment.

Fixes #275
---
 libexec/rbenv-exec | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libexec/rbenv-exec b/libexec/rbenv-exec
index 92ecb72b..5c1aacd8 100755
--- a/libexec/rbenv-exec
+++ b/libexec/rbenv-exec
@@ -7,7 +7,9 @@ if [ "$1" = "--complete" ]; then
   exec rbenv shims --short
 fi
 
+export RBENV_VERSION="$(rbenv-version-name)"
 RBENV_COMMAND="$1"
+
 if [ -z "$RBENV_COMMAND" ]; then
   echo "usage: rbenv exec COMMAND [arg1 arg2...]" >&2
   exit 1
@@ -21,5 +23,7 @@ for script in $(rbenv-hooks exec); do
 done
 
 shift 1
-export PATH="${RBENV_BIN_PATH}:${PATH}"
+if [ "$RBENV_VERSION" != "system" ]; then
+  export PATH="${RBENV_BIN_PATH}:${PATH}"
+fi
 exec -a "$RBENV_COMMAND" "$RBENV_COMMAND_PATH" "$@"