Change the inkthemes-functions.php from child

This is possible but a bit messy IMO.

Copy the entire onepage_breadcrumbs() function code from inkthemes-functions.php to your child theme’s functions.php.

Change the name of this function to custom_onepage_breadcrumbs(). Copy the following files from the parent to the child theme’s directory:

./author.php
./single.php
./index.php
./blog.php
./404.php
./page.php

Find all occurrences of onepage_breadcrumbs() and change them to custom_onepage_breadcrumbs().

It works. Thank you very much!

Having so many files copied to the child theme renders any updates of the parent a bit useless though…

You’re welcome!

Yes, you’ll have to check if those files were updated and manually copy them over and make these changes.

If the author adds a if ( ! function_exists( 'onepage_breadcrumbs' ) ) condition above this function it’ll make things a lot easier.

Indeed that would be the best way for users like me!
I’ll take note of what I did and be careful of the next releases.
Thanks!