From 5e52fae7c175c653d95e80435584754f2b418e0f Mon Sep 17 00:00:00 2001
From: Sam Stephenson <sam@37signals.com>
Date: Sun, 30 Dec 2012 19:01:30 -0600
Subject: [PATCH] Accept "ruby-" version prefix but print a warning to stderr

---
 libexec/rbenv-version-name | 12 ++++++++++--
 libexec/rbenv-versions     |  2 +-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/libexec/rbenv-version-name b/libexec/rbenv-version-name
index cd1d18fd..46e3ae7c 100755
--- a/libexec/rbenv-version-name
+++ b/libexec/rbenv-version-name
@@ -13,10 +13,18 @@ if [ -z "$RBENV_VERSION" ] || [ "$RBENV_VERSION" = "system" ]; then
   exit
 fi
 
-RBENV_VERSION_PATH="${RBENV_ROOT}/versions/${RBENV_VERSION}"
+version_exists() {
+  local version="$1"
+  [ -d "${RBENV_ROOT}/versions/${version}" ]
+}
 
-if [ -d "$RBENV_VERSION_PATH" ]; then
+if version_exists "$RBENV_VERSION"; then
   echo "$RBENV_VERSION"
+elif version_exists "${RBENV_VERSION#ruby-}"; then
+  {  echo "rbenv: ignoring extraneous \`ruby-' prefix in version \`${RBENV_VERSION}'"
+     echo "(set by $(rbenv-version-origin))"
+  } >&2
+  echo "${RBENV_VERSION#ruby-}"
 else
   echo "rbenv: version \`$RBENV_VERSION' is not installed" >&2
   exit 1
diff --git a/libexec/rbenv-versions b/libexec/rbenv-versions
index 5bfa72e9..ea28e5cd 100755
--- a/libexec/rbenv-versions
+++ b/libexec/rbenv-versions
@@ -21,7 +21,7 @@ fi
 
 print_version() {
   if [ "$1" == "$current_version" ]; then
-    echo "${hit_prefix}$(rbenv-version)"
+    echo "${hit_prefix}$(rbenv-version 2>/dev/null)"
   else
     echo "${miss_prefix}$1"
   fi