From f6796075f39779ccce4a5ce88efa0b28788aa354 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Mengu=C3=A9?= <dolmen@cpan.org>
Date: Mon, 20 Jan 2014 19:54:50 +0100
Subject: [PATCH] Use shell built-in matching instead of 'expr' external

---
 nvm.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/nvm.sh b/nvm.sh
index c8739a9..70b4966 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -428,10 +428,10 @@ nvm() {
         nvm use $VERSION
         if ! nvm_has "npm" ; then
           echo "Installing npm..."
-          if [ "`expr "$VERSION" : '\(^v0\.1\.\)'`" != '' ]; then
+          if [[ $VERSION == v0.1.* ]]; then
             echo "npm requires node v0.2.3 or higher" >&2
-          elif [ "`expr "$VERSION" : '\(^v0\.2\.\)'`" != '' ]; then
-            if [ "`expr "$VERSION" : '\(^v0\.2\.[0-2]$\)'`" != '' ]; then
+          elif [[ $VERSION == v0.2.* ]]; then
+            if [[ $VERSION == v0.2.[0-2] ]]; then
               echo "npm requires node v0.2.3 or higher" >&2
             else
               nvm_download https://npmjs.org/install.sh -o - | clean=yes npm_install=0.2.19 sh