sanitize pdf filename to remove special characters

bluegeek9 → closed merge request !17

Thanks for your patch.

I think I'd prefer to use the core functionality for sanitising filenames, rather than rolling our own, if that's possible. I've found https://www.drupal.org/node/3032541 → and will follow the trail there to see how we can use that sanitisation.

Merged into 3.x branch, thanks. Used core event in place of rolling our own sanitisation.

Automatically closed - issue fixed for 2 weeks with no activity.