Should escape grep in copy-packages.

nvm.sh

@@ -748,7 +748,7 @@ nvm() {
 
       # declare local INSTALLS first, otherwise it doesn't work in zsh
       local INSTALLS
-      INSTALLS=$(nvm use $VERSION > /dev/null && npm list --global --parseable --depth=0 2> /dev/null | tail -n +2 | grep -o -e '/[^/]*$' | cut -c 2- | xargs)
+      INSTALLS=$(nvm use $VERSION > /dev/null && npm list --global --parseable --depth=0 2> /dev/null | tail -n +2 | \grep -o -e '/[^/]*$' | cut -c 2- | xargs)
 
       npm install -g --quiet $INSTALLS
     ;;