From 3efdf6a2430b72bc5f6fe2c25752619d28fd9661 Mon Sep 17 00:00:00 2001
From: Sam Stephenson <sam@37signals.com>
Date: Sun, 14 Aug 2011 14:16:26 -0500
Subject: [PATCH] Guard against nonexistent entries in $PATH

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

diff --git a/libexec/rbenv-which b/libexec/rbenv-which
index 5e605628..0f8fd2c5 100755
--- a/libexec/rbenv-which
+++ b/libexec/rbenv-which
@@ -2,6 +2,10 @@
 set -e
 
 expand_path() {
+  if [ ! -d "$1" ]; then
+    return 1
+  fi
+
   local cwd="$(pwd)"
   cd "$1"
   pwd
@@ -14,7 +18,7 @@ remove_from_path() {
 
   for path in ${PATH//:/$'\n'}; do
     path="$(expand_path "$path" || true)"
-    if [ "$path" != "$path_to_remove" ]; then
+    if [ -n "$path" ] && [ "$path" != "$path_to_remove" ]; then
       result="${result}${path}:"
     fi
   done