I wouldn't mention asc, that one is just bad, especially on non-windows boxen because of gpg default extensions. 

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> On Oct 11, 2013, at 23:14, Dan Allen <notifications@github.com> wrote:
> 
> In file_types.md:
> 
> > @@ -66,6 +66,12 @@ Ruby `String`, allowing for expressions such as
> >  
> >      # This is the \#{page.title}
> >  
> > +### AsciiDoc (`.adoc`)
> It hasn't caught on because GitHub basically said no. Otherwise, I would have switched everything to it. You are right, though, that adoc is gaining the adoption. I think it's still worth mentioning that we support the other ones, so perhaps we can list them in priority order.
> 
> .adoc, .asciidoc, .ad, .asc
> 
> \
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