From 778f022e8a913fafc7986bb8eec01e96ee30f1cb Mon Sep 17 00:00:00 2001
From: Janusz Kaczmarek <januszop@gmail.com>
Date: Tue, 8 Aug 2023 08:41:53 +0000
Subject: [PATCH] Bug 33406: Filter out some known isolated trouble makers

Test plan:
1) Launch k-t-d with ES:
-- ktd --es7 pull
-- ktd --es7 up
2) Visit /cgi-bin/koha/authorities/authorities-home.pl and search for 'tim'
3) Edit that, add a dash '-' to 100$a, like 'Bunce, Tim - name'"
4) Do a authority search for 'tim - name', notice it errors out
5) Apply patch
6) Perform the same search, notice it doesn't error and returns the correct record

Signed-off-by: Pedro Amorim <pedro.amorim@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 27c6171222bf3abb5ed91e399bb2663579e8e367)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 14487cd5e06cc8e5da133194f8d31e60b03fab9b)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
---
 Koha/SearchEngine/Elasticsearch/QueryBuilder.pm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
index 3237bbc5e8..015f7b42ed 100644
--- a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
+++ b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
@@ -1235,6 +1235,9 @@ sub _split_query {
     # Filter out empty values
     @tokens = grep( /\S/, @tokens );
 
+    # Filter out some known isolated trouble makers: -, ^, \, ~, +
+    @tokens = grep( !/^[-\^\\~\+]*$/, @tokens );
+
     return @tokens;
 }
 
-- 
2.39.5