Why should the on-disk format of a programming language have anything coupled to a specific use-case for browsing that code? If viewing just the definitions of

Why should the on-disk format of a programming language have anything coupled to a specific use-case for browsing that code? If viewing just the definitions of a method is useful (ie, viewing the header file) then your editor should just let you do so. Letting that bleed into the way the files are organized on disk at the cost of DRY seems a terrible design choice as it serves no purpose other than to make up for poor tooling.