installer.rb in u3d-1.0.3

- old
+ new

@@ -19,10 +19,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 ## --- END LICENSE BLOCK ---
 
 require 'u3d/utils'
+require 'u3d_core/core_ext/string'
 require 'u3d/installation'
 require 'fileutils'
 require 'file-tail'
 
 module U3d
@@ -227,11 +228,11 @@
       parent = File.expand_path('..', source_path)
       new_path = File.join(parent, UNITY_DIR % unity.version)
 
       source_path.tr!('/', '\\')
       new_path.tr!('/', '\\')
-      source_path = "\"" + source_path + "\"" if source_path =~ / /
-      new_path = "\"" + new_path + "\"" if new_path =~ / /
+      source_path = source_path.argescape
+      new_path = new_path.argescape
 
       command = "move #{source_path} #{new_path}"
 
       CommonInstaller.sanitize_install(source_path, new_path, command, dry_run: dry_run)
     end