Re: treat .xpi as archive file

[Jason Rumney]

Richard Stallman <address@hidden> writes:

>     Yes, in principle (like compressed files), but please don't mess with
>     that now.
>
> I tend to agree it is better to recognize these by filenames.  That is
> because there is a very strong convention to use those filenames for
> these files.  People won't, and shouldn't, expect Emacs to treat
> something as a ZIP file if it doesn't have the right file name.

I disagree. While we might not want to mess with this before release,
the file extensions used for zip files are multiplying, and I don't
think we should expect users to know that a file with the extension
.xpi, .jar, .ear, .war or whatever else comes in future (are Open
Office files also zip files?) is actually a zip file so they can set
Emacs up to recognize it correctly. I don't think we can guess all the
extensions that developers will use for zip archives with specific
meaning to their program.