I just resolved a nagging issue with WP/TF not changing straight quotes to curly ones - the documentation of TF tips makes it seem that it's an option to preserve straight quotes, but the code in functions.php makes it a default.
As I want fancy/curly/typographical quotes by default, I have to disable the function 'remove_filter()' in functions.php. This will get overwritten by at least some theme updates, right? I looked at the child theme functions.php, but there's no code related to that function. How do I go about making a change to the main-theme functions.php persistent over theme updates? Or otherwise force the theme to leave quote conversion alone so that both posts and comments use curly quotes?