Having several re() in a backup template

Hello,

I would like to know how to combine these two backup templates:

{author_sort}/{title:re(:, -)} - {authors}
{author_sort}/{title:re(',)} - {outside}

I can't chain the re() : {author_sort}/{title:re(:, -):re(',)} - {authors} returns an error.

If anyone could help me, that would be great! Sorry for any translation errors.
Thanks a lot.