How to call a function in regex_replace with matches?

I'd like to use some processing function instead of replacement text in regex_replace function. Is there possible to use a function with matches as arguments, like: SELECT REGEXP_REPLACE( description, '\[([is]?:?)(\d+)\]', CONCAT_WS(' ', \1, \2), 'gi' ) FROM some_table WHERE id = 123; Of course, backreferences \1 and \2 do not work here, but is there some way to use variables instead of them? Background: description may contain more than one string with a pattern like ` or [i:12345] or [s:12345] and I'd like to process such matches into advanced strings, so I thought the best way is to write a custom function and call it with matches of regex_replace`. I just did not found in the docs, how could I use matches as variable/arguments. Is this possible or what is a better way to accomplish my goal? **EDIT** I show description field before and after: Lorem ipsum dolor sit amet , consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et magna aliqua. should be after replacements like: Lorem ipsum dolor sit amet "one-two-three", consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et "two-three-four" magna aliqua.