status: work-in-progress The default "release" search on fatcat.wiki currently uses the elasticsearch built-in `query_string` parser, which is explicitly not recommended for public/production use. The best way forward is likely a custom query parser (eg, PEG-generated parser) that generates a complete elasticsearch query JSON structure. A couple search issues this would help with: - better parsing of keywords (year, year-range, DOI, ISSN, etc) in complex queries and turning these in to keyword term sub-queries - queries including terms from multiple fields which aren't explicitly tagged (eg, "lovelace computer" vs. "author:lovelace title:computer") - avoiding unsustainably expensive queries (eg, prefix wildcard, regex) - handling single-character mispellings and synonyms - collapsing multiple releases under the same work in search results In the near future, we may also create a fulltext search index, which will have it's own issues.