I have several different instances of Firefox running on different platforms under different user accounts. I have shared my bookmarks among some of them by means of Firefox sync. However, I have a big mess with the settings. I am afraid to enable "settings" in Firefox sync, because some settings are platform-specific. For example my download settings for Firefox snap under Ubuntu will not work in Firefox under Windows and vice-versa. I would nonetheless like to profit from things I have configured in some instances (e.g. search engines and some settings in about:config) without having to "reinvent the wheel" on others. I need a way to selectively merge these settings. IIRC, these settings are stored in JSON files. Is there some way for me to selectively merge their contents without breaking Firefox?
