Maybe it could be made an option to pg_dump? Some users and their systems might not even have overloaded functions, and these users will of course prefer a nice looking filename, i.e. all functions having the same name kept in the same file. Which for them will mean only one function per file anyway.
pg_dump --split --overloaded-functions-to-same-file Other users and their systems might have a lot of overloaded functions, like the equal() example mentioned, they will of course prefer to keep all functions in separate files. pg_dump --split --overloaded-functions-to-separate-files Then, one can discuss which one should be the default option for --split, I would prefer the same file variant, and think most other users would too, except for users with a lot of overloaded functions.
