Re: treat .xpi as archive file

[Juri Linkov]

> Files with extension .xpi should be treated like .jar,
> i.e. should be opened in Archive mode.  (This extension
> indicates Mozilla extensions.)

We could add .xpi to `auto-mode-alist' to treat like .jar/.ear/.war.
But wouldn't it be better instead of these extension to add ZIP magic
string "PK^C^D" to `magic-mode-alist' to recognize archive files for
any possible extension?  The only problem I see is that archive files
should have `no-conversion' property in `auto-coding-alist' to open
correctly in Archive mode.  Maybe Archive mode should always revisit
files with `no-conversion' when archive-mode was called by rules in
`magic-mode-alist'.

-- 
Juri Linkov
http://www.jurta.org/emacs/