From ba1be9b4eaa1429ef61735283398ad8ff2e6002b Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Mon, 5 May 2014 22:46:46 -0700
Subject: [PATCH] Making `nvm install` use the version, even if it's already
 installed. Fixes #410

---
 nvm.sh                                        |  6 ++++-
 .../install already installed uses it         | 24 +++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100755 test/slow/nvm install/install already installed uses it

diff --git a/nvm.sh b/nvm.sh
index ec5c6e4..645de86 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -306,7 +306,11 @@ nvm() {
         shift
       done
 
-      [ -d "$NVM_DIR/$VERSION" ] && echo "$VERSION is already installed." && return
+      if [ -d "$NVM_DIR/$VERSION" ]; then
+        echo "$VERSION is already installed."
+        nvm use "$VERSION"
+        return $?
+      fi
 
       if [ "$VERSION" = "N/A" ]; then
         echo "Version '$provided_version' not found - try \`nvm ls-remote\` to browse available versions."
diff --git a/test/slow/nvm install/install already installed uses it b/test/slow/nvm install/install already installed uses it
new file mode 100755
index 0000000..7e42c07
--- /dev/null
+++ b/test/slow/nvm install/install already installed uses it	
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+die () { echo $@ ; exit 1; }
+
+. ../../../nvm.sh
+
+[ "$(nvm install invalid.invalid)" = "Version 'invalid.invalid' not found - try \`nvm ls-remote\` to browse available versions." ] || die "nvm installing an invalid version did not print a nice error message"
+
+# Remove the stuff we're clobbering.
+[ -e ../../../v0.9.7 ] && rm -R ../../../v0.9.7
+[ -e ../../../v0.9.12 ] && rm -R ../../../v0.9.12
+
+# Install from binary
+nvm install 0.9.7
+nvm install 0.9.12
+
+nvm use 0.9.7
+
+node --version | grep v0.9.7 || die "precondition failed: node doesn't start at 0.9.7"
+
+nvm install 0.9.12
+
+node --version | grep v0.9.12 || die "nvm install on already installed version doesn't use it"
+