It has been confirmed to me that the CloudElastic service supports all the same filtering options that CirrusSearch does. We should add all applicable options to the Global Search UI. Ideally, we can also make the "Query" field act the same as the on-wiki search, whereby you can use filters like intitle:foo. This way, one can easily re-use a local query in their global searches.

Requested at https://meta.wikimedia.org/wiki/Special:Permalink/25428347#Help_with_Global-Search_Tool

Related resources:

• https://www.mediawiki.org/wiki/Extension:CirrusSearch/Schema
• https://www.mediawiki.org/wiki/Help:CirrusSearch (what we should attempt to mimic)