Re: using libmagic in Emacs?

[Richard Stallman]

    > `mailcap-file-default-commands' is not infrastructure.  It's one
    > small feature.

    A feature is something that stands on its own.  I don't think
    `mailcap-file-default-commands' qualifies, nor would any other
    function that returns something related to a file's type.  A feature
    would _use_ these to actually do something useful with the file.

You're right; but the point is that this is used in very specific
features, not in something general and basic such as find-file.