From a2a255a2411c7e2b006fb2b067634607719eb716 Mon Sep 17 00:00:00 2001
From: Isaac Hill <71404865+isaachilly@users.noreply.github.com>
Date: Wed, 5 Aug 2026 17:27:29 +0200
Subject: [PATCH 1/2] Use a more extensive URI encoder that covers special
 characters such as plusses

`+` does not get encoded by the minimal `encodeURI` method. The `encodeURIComponent` method is more suitable for encoding individual query parameters.
---
 InfoLogger/public/logFilter/LogFilter.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/InfoLogger/public/logFilter/LogFilter.js b/InfoLogger/public/logFilter/LogFilter.js
index cf83a3fc1..29c45b0cc 100644
--- a/InfoLogger/public/logFilter/LogFilter.js
+++ b/InfoLogger/public/logFilter/LogFilter.js
@@ -142,7 +142,7 @@ export default class LogFilter extends Observable {
           delete criterias[field][operator];
         } else if (operator === 'match' || operator === 'exclude') {
           // encode potential breaking characters and escape double quotes as are used by browser by default
-          criterias[field][operator] = encodeURI(criterias[field][operator].replace(/["]+/g, '\\"'));
+          criterias[field][operator] = encodeURIComponent(criterias[field][operator].replace(/["]+/g, '\\"'));
         }
 
         // remove empty fields

From e0bbb4dcddd4698bb944b03e6ed2c1e089dabe41 Mon Sep 17 00:00:00 2001
From: Isaac Hill <71404865+isaachilly@users.noreply.github.com>
Date: Wed, 5 Aug 2026 17:37:21 +0200
Subject: [PATCH 2/2] Adds tests that cover the correct encoding/decoding of
 special characters in filters

---
 .../test/public/log-filter-actions-mocha.js   | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/InfoLogger/test/public/log-filter-actions-mocha.js b/InfoLogger/test/public/log-filter-actions-mocha.js
index 6f7da8e8b..cab6a8768 100644
--- a/InfoLogger/test/public/log-filter-actions-mocha.js
+++ b/InfoLogger/test/public/log-filter-actions-mocha.js
@@ -249,6 +249,30 @@ describe('Filter actions test-suite', async () => {
     assert.deepStrictEqual($in, ['I', 'W', 'E', 'F']);
   });
 
+  it('should encode special characters correctly into the URL', async () => {
+    const pidMatch = await page.evaluate(() => {
+      window.model.log.filter.setCriteria('pid', 'match', 'a+b c %d #anchor & = héllo wörld 日本語');
+      return window.model.log.filter.criterias.pid.$match;
+    });
+
+    assert.strictEqual(pidMatch, 'a+b c %d #anchor & = héllo wörld 日本語');
+
+    const searchParams = await page.evaluate(() => {
+      window.model.updateRouteOnModelChange();
+      return window.location.search;
+    });
+
+    assert.ok(searchParams.includes('a%2Bb%20c%20%25d%20%23anchor%20%26%20%3D%20h%C3%A9llo%20w%C3%B6rld%20%E6%97%A5%E6%9C%AC%E8%AA%9E'));
+  });
+
+  it('should decode special characters correctly from the URL', async () => {
+    await page.goto(`${baseUrl}?q={%22pid%22:{%22match%22:%22a%2Bb%20c%20%25d%20%23anchor%20%26%20%3D%20h%C3%A9llo%20w%C3%B6rld%20%E6%97%A5%E6%9C%AC%E8%AA%9E%22}}`, { waitUntil: 'networkidle0' });
+
+    const pidMatch = await page.evaluate(() => window.model.log.filter.criterias.pid.$match);
+
+    assert.strictEqual(pidMatch, 'a+b c %d #anchor & = héllo wörld 日本語');
+  });
+
   it('should reset filters and set them again', async () => {
     const criterias = await page.evaluate(() => {
       window.model.log.filter.resetCriteria();