accerlate nvm invoke when change directory

README.markdown

@@ -316,9 +316,16 @@ Put this into your `$HOME/.zshrc` to call `nvm use` automatically whenever you e
 # place this after nvm initialization!
 autoload -U add-zsh-hook
 load-nvmrc() {
-  if [[ -f .nvmrc && -r .nvmrc ]]; then
+  local node_version="$(nvm version)"
+  local nvmrc_path="$(nvm_find_nvmrc)"
+
+  if [ -n "$nvmrc_path" ]; then
+    local nvmrc_node_version=$(nvm version "$(cat "${nvmrc_path}")")
+
+    if [ "$nvmrc_node_version" != "N/A" ] && [ "$nvmrc_node_version" != "$node_version" ]; then
       nvm use 
-  elif [[ $(nvm version) != $(nvm version default)  ]]; then
+    fi
+  elif [ "$node_version" != "$(nvm version default)" ]; then
     echo "Reverting to nvm default version"
     nvm use default
   fi