Setup  Install this plugin to help testing: https://github.com/catalyst/moodle-tool_testtasks on this commit: https://github.com/catalyst/moodle-tool_testtasks/commit/d1966cea4742741bf7304d9946736b529a8eac4c git clone https: //github.com/catalyst/moodle-tool_testtasks admin/tool/testtasks cd admin/tool/testtasks git checkout d1966cea4742741bf7304d9946736b529a8eac4c Login as admin, go to Site administration > Server > System paths and set "Path to PHP CLI" with the proper value. Testing instructions  Login as admin Visit /admin/tool/task/schedule_task.php?task=tool_testtasks%5Ctask%5Cmtrace_task Click Run now Confirm the task incrementally emits lines over about a second Confirm that various urls are auto linked and open in a new window Confirm that emails are auto linked and open in a new window Confirm that there is no alert Run this on the cli to queue up some similar adhoc tasks: php admin/tool/testtasks/cli/queue_adhoc_tasks.php --class='tool_testtasks\task\mtrace_task_adhoc' -n=3 Visit /admin/tool/task/adhoctasks.php?classname=%5Ctool_testtasks%5Ctask%5Cmtrace_task_adhoc Click 'Run all' and 'Run ad hoc tasks now?' Confirm the task incrementally emits lines over about a second Confirm that various urls are auto linked and open in a new window Confirm that emails are auto linked and open in a new window Confirm that there is no alert