MDL-62640 environment: Remove the deprecated slash argument check

.upgradenotes/MDL-62640-2024083012210854.yml

@@ -0,0 +1,7 @@
+issueNumber: MDL-62640
+notes:
+  core:
+    - message: |
+        Due to the removal of the slashargument configuration, the server check page will no longer inspect the slash argument,
+        therefore, the function check_slasharguments() is deprecated because it is no longer used.
+      type: deprecated

admin/environment.xml

@@ -4634,11 +4634,6 @@
           <ON_ERROR message="quizattemptsupgradedmessage" />
         </FEEDBACK>
       </CUSTOM_CHECK>
-      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_slasharguments" level="optional">
-        <FEEDBACK>
-          <ON_CHECK message="slashargumentswarning" />
-        </FEEDBACK>
-      </CUSTOM_CHECK>
       <CUSTOM_CHECK file="lib/upgradelib.php" function="check_database_tables_row_format" level="optional">
         <FEEDBACK>
           <ON_CHECK message="unsupporteddbtablerowformat" />

lang/en/admin.php

@@ -1310,7 +1310,6 @@ $string['sitepolicyguest_help'] = 'The URL of the site policy that all guests mu
 $string['sitesectionhelp'] = 'Display a section at the top of the page where you can add custom content.';
 $string['sixtyfourbitsrequired'] = 'It has been detected that your site is not using a 64-bit PHP version. You are required to upgrade your system (operating system, PHP...) before installing this Moodle version.';
 $string['sixtyfourbitswarning'] = 'It has been detected that your site is not using a 64-bit PHP version. It is recommended that you upgrade your site to ensure future compatibility.';
-$string['slashargumentswarning'] = 'It is recommended that the use of slash arguments is enabled. In future it will be required. For more details, see the documentation <a href="https://docs.moodle.org/en/admin/environment/slasharguments">Using slash arguments</a>.';
 $string['smallscreensonly'] = 'Small screens only';
 $string['smtp'] = 'SMTP';
 $string['smtpauthtype'] = 'SMTP Auth Type';
@@ -1664,3 +1663,4 @@ $string['registration_help'] = 'By registering:
 * You can activate mobile app push notifications from your site
 * You are contributing to our Moodle statistics of the worldwide community';
 $string['slasharguments'] = 'Use slash arguments';
+$string['slashargumentswarning'] = 'It is recommended that the use of slash arguments is enabled. In future it will be required. For more details, see the documentation <a href="https://docs.moodle.org/en/admin/environment/slasharguments">Using slash arguments</a>.';

lang/en/deprecated.txt

@@ -132,3 +132,4 @@ registration_help,core_admin
 coursemanagementoptions,core_my
 configslasharguments,core_admin
 slasharguments,core_admin
+slashargumentswarning,core_admin

lib/deprecatedlib.php

@@ -785,3 +785,30 @@ function plagiarism_get_file_results(): void {
 function plagiarism_update_status(): void {
     \core\deprecation::emit_deprecation_if_present(__FUNCTION__);
 }
+
+/**
+ * Method used to check the usage of slasharguments config and display a warning message.
+ *
+ * @param environment_results $result object to update, if relevant.
+ * @return environment_results|null updated results or null if slasharguments is disabled.
+ *
+ * @deprecated Since Moodle 4.5
+ * @todo Final deprecation on Moodle 6.0. See MDL-82768.
+ */
+#[\core\attribute\deprecated(
+    since: '4.5',
+    mdl: 'MDL-62640',
+    reason: 'Removed the option to disable slash arguments (slashargs)',
+)]
+function check_slasharguments(environment_results $result) {
+    \core\deprecation::emit_deprecation_if_present(__FUNCTION__);
+    global $CFG;
+
+    if (!during_initial_install() && empty($CFG->slasharguments)) {
+        $result->setInfo('slasharguments');
+        $result->setStatus(false);
+        return $result;
+    }
+
+    return null;
+}

lib/upgradelib.php

@@ -2272,24 +2272,6 @@ function check_database_storage_engine(environment_results $result) {
     return null;
 }
 
-/**
- * Method used to check the usage of slasharguments config and display a warning message.
- *
- * @param environment_results $result object to update, if relevant.
- * @return environment_results|null updated results or null if slasharguments is disabled.
- */
-function check_slasharguments(environment_results $result){
-    global $CFG;
-
-    if (!during_initial_install() && empty($CFG->slasharguments)) {
-        $result->setInfo('slasharguments');
-        $result->setStatus(false);
-        return $result;
-    }
-
-    return null;
-}
-
 /**
  * This function verifies if the database has tables using innoDB Antelope row format.
  *