Is there a way to make it so any custom field will accept and process shortcodes? I’ve seen countless threads on this topic all around the Web with ways to make WordPress process shortcodes if you explicitly identify each field by name. I’m wondering if there’s a way to make it so all custom fields will accept shortcodes without needing to set up a function naming each one.
I’d like to retrofit a bunch of sites with a function to process shortcodes, and it would take weeks to run through every site, get the name of every field and script out each one by name. Is there any way to do this across the board, so I can drop in the function on 40-50 sites and all fields are now able to use them? For example, I have a simple shortcode – [tm] – that spits out <sup>™</sup>. I want client to be able to add [tm] into any field, and get the HTML equivalent.