TowyTowy 8c5bd58808 Fix SQL errors breaking regex search on MySQL / MariaDB (#9036) ...

On MySQL and MariaDB (the compressed content_bin code path,
isCompressed() === true), three of the four regex-search constructions
in FreshRSS_EntryDAO::sqlBooleanSearch() generated invalid SQL, so the
query failed and the search silently returned zero articles:

* intext:/regex/ appended a stray closing parenthesis after
  sqlRegex(...) (MySQL error 1248);
* -intext:/regex/ had the same stray parenthesis;
* -/regex/ emitted ' ANT NOT ' instead of ' AND NOT '
  (MySQL error 1064).

sqlRegex() already returns a self-contained, balanced expression
(REGEXP_LIKE(expr, ?, 'flags') or expr REGEXP ?), so no extra
parenthesis is needed, matching the uncompressed (SQLite / PostgreSQL)
branches.

The existing MySQL / MariaDB unit tests for intext:/regex/ had
captured the buggy unbalanced SQL as their expected strings; they are
corrected, and new cases are added for -intext:/regex/ and -/regex/
on both flavours.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

2026-07-21 17:50:16 +02:00

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