Serkan Mulayim wrote on 6/8/17 7:12 PM:
afaik there is no C implementation of the Regex query. I wrote the Perl version.https://metacpan.org/release/LucyX-Search-WildcardQuery
You will be *much* happier with storing the file extension as a separate field
and searching on that. Far far more efficient at search time than munging a regex.
Peter Karman . https://karpet.github.io