UX fix: when the user clicks on the search input, don't move the cursor at the end

Related to https://github.com/searxng/searxng/pull/1153#issuecomment-1154247988

searx/static/themes/simple/src/js/main/keyboard.js

@@ -317,7 +317,12 @@ searxng.ready(function () {
 
   function searchInputFocus () {
     window.scrollTo(0, 0);
-    document.querySelector('#q').focus();
+    var q = document.querySelector('#q');
+    q.focus();
+    if (q.setSelectionRange) {
+      var len = q.value.length;
+      q.setSelectionRange(len, len);
+    }
   }
 
   function openResult (newTab) {

searx/static/themes/simple/src/js/main/search.js

@@ -3,17 +3,10 @@
 (function (w, d, searxng) {
   'use strict';
 
-  var firstFocus = true, qinput_id = "q", qinput;
+  var qinput_id = "q", qinput;
 
   const isMobile = window.matchMedia("only screen and (max-width: 50em)").matches;
 
-  function placeCursorAtEnd (element) {
-    if (element.setSelectionRange) {
-      var len = element.value.length;
-      element.setSelectionRange(len, len);
-    }
-  }
-
   function submitIfQuery () {
     if (qinput.value.length  > 0) {
       var search = document.getElementById('search');
@@ -45,15 +38,6 @@
   searxng.ready(function () {
     qinput = d.getElementById(qinput_id);
 
-    function placeCursorAtEndOnce () {
-      if (firstFocus) {
-        placeCursorAtEnd(qinput);
-        firstFocus = false;
-      } else {
-        // e.preventDefault();
-      }
-    }
-
     if (qinput !== null) {
       // clear button
       createClearButton(qinput);
@@ -84,8 +68,6 @@
         }, "#" + qinput_id);
       }
 
-      qinput.addEventListener('focus', placeCursorAtEndOnce, false);
-
       if (!isMobile && document.querySelector('.index_endpoint')) {
         qinput.focus();
       }