[LUCENE-10402] Intervals.prefix() handles multicharacter unicode incorrectly

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.1
• Lucene Fields: New
• Assignee: Alan Woodward
• Reporter: Alan Woodward
• Created: 03/Feb/22 15:10
• Updated: 28/Aug/22 16:35
• Resolved: 04/Feb/22 15:30

Description

Intervals.prefix() takes its input and builds a CompiledAutomaton, before passing this on to a new MultiTermAutomatonIntervalsSource.  However, while PrefixQuery.toAutomaton() builds a binary automaton, we don't tell CompiledAutomaton this and so it (incorrectly) does some unicode conversion on its input.

Issue Links

• links to: GitHub Pull Request #646