In my Moodle 3 config.php file I have
$CFG->customscripts = dirname(__FILE__).'/local/customscripts';In my /local/customscripts/ folder I have
mod/scorm/player.php
In player.php I have thrown everything out and written
<?php echo "hi there"; exit;
But when I open a scorm page, it still loads. Tried with other paths (e.g. /course/view.php). Verified permissions on disk are correct, purged caches.
Negative. I just checked and it works as expected.
In my config.php I have
$CFG->customscripts = __DIR__.'/local/customscripts';
When the file ./local/customscripts/course/view.php exists, it is correctly loaded at the top of the standard file as a part of the setup - see lib/setup.php#L945.
You may want to try to debug this by adding something like print_object(custom_script_path()); die(); near that line no. 945 there.