Allow regex parentheses (#6926)

* Allow regex parentheses
While waiting for a new better search parser, auto-escape parentheses in regex expressions to allow them like in `/^(ab|cd)/`

* Allow escaped parenthesis in regex

* A couple more tests

1 files changed, 1 insertions, 0 deletions

diff --git a/app/Models/Search.php b/app/Models/Search.php
index 0e2f5da6f..45fa742be 100644
--- a/app/Models/Search.php
+++ b/app/Models/Search.php
@@ -94,6 +94,7 @@ class FreshRSS_Search {
 	public function __construct(string $input) {
 		$input = self::cleanSearch($input);
 		$input = self::unescape($input);
+		$input = FreshRSS_BooleanSearch::unescapeRegexParentheses($input);
 		$this->raw_input = $input;
 
 		$input = $this->parseNotEntryIds($input);