Newbie question and after reading the docs
https://manual.calibre-ebook.com/template_lang.html on functions and I had no clue how to get it implemented!
How can I concatenate arguments in a replace function when saving to disk template?
Lets say I want to replace the punctuation signs ! and ? with an underscore from the title field when saving to disk using template.
this works for one...
how can I also replace ? with an underscore in the same field ?