[LUCENE-8480] Completion regex query uses UTF32 automaton

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Jim Ferenczi
• Created: 03/Sep/18 20:13
• Updated: 28/Aug/22 15:35

Description

The completion regex query builds an UTF-32 automaton but the completion FST uses UTF-8 internally. This makes the matching of any non basic latin character impossible in a regex completion query.