civicrm/civicrm-core — pull request #1624 by pratik-joshi (2013-09-11 11:31:28+00:00)
Title: CRM-10760 : adding lcMessages to CRM.config setting so that can be used inside .js file

The issue for 'delay' (property of autocomplete field) breaking is due to introduction of onChange(0, true); which you can see at line no. 202 packages/jquery/plugins/jquery.autocomplete.js also a warning comment has been put above that code snippet about 'delay' break .

This code was introduced for CRM-6135 issue break fix (chinese character search not triggering) .

This PR including one more PR sent inside packages repo - combines the fix for this issue : For fixing checked if the 'chinese' language is selected by default in multi-lingual site and if it is then only expose onChange(0, true); for execution.