AutoCompletion in chained Velocity methods is wrongly triggered in parameters

In a chained Velocity method, if the user types a "." in a parameter, autocomplete is triggered with a wrong value.

Steps to reproduce :

• Edit a page with the AutoCompletion Application installed in the wiki
• In a Velocity macro, type: $services.localization.render("my.key")
  When you press the dot in "my.key", the text will be transformed into :
  $services.localization.renderenderkey")