Comment 1 for bug 1487274

For testing purposes, here are a few sample words (in page titles, artefact titles, and user names) that have caused Elasticsearch to choke:

João
Jiménez
Māori

It's not clear from our situation whether the problem lies in our Elasticsearch setup, or in Mahara's code. I think it may be something peculiar to our server setup because I haven't been able to replicate the problem on my local machine.