MDL-11992: adding course tagging patch, by John Beedell. This feature is not

active by default at this time. Related help files are not included in this
commit, as they are being revised (see issue 15385) and will be sent in soon.

lib/moodlelib.php

@@ -154,8 +154,8 @@ define('PARAM_FILE',     0x0010);
 define('PARAM_TAG',   0x0011);
 
 /**
- * PARAM_TAGLIST - list of tags separated by commas (interests, blogs, etc.) 	
- */ 	
+ * PARAM_TAGLIST - list of tags separated by commas (interests, blogs, etc.)
+ */
 define('PARAM_TAGLIST',   0x0012);
 
 /**
@@ -2817,7 +2817,7 @@ function update_user_record($username, $authplugin) {
 }
 
 /**
- * will truncate userinfo as it comes from auth_get_userinfo (from external auth) 
+ * will truncate userinfo as it comes from auth_get_userinfo (from external auth)
  * which may have large fields
  */
 function truncate_userinfo($info) {
@@ -3543,6 +3543,10 @@ function remove_course_contents($courseid, $showfeedback=true) {
     remove_course_grades($courseid, $showfeedback);
     remove_grade_letters($context, $showfeedback);
 
+/// Delete course tags
+    require_once($CFG->dirroot.'/tag/coursetagslib.php');
+    coursetag_delete_course_tags($course->id, $showfeedback);
+
     return $result;
 }