you can add any TeX command (the ones you call with C-c C-c) to your init.el like this:

  '(add-to-list 'TeX-command-list
                '("contex"
                  "context %t --nonstopmode --purgeall" % change the command to your needs
                  TeX-run-TeX
                  nil
                  (context-mode)
                  :help "Run ConTeXt")
                t))

I run emacs25 and auctex 11.89.5 without problems.
although i use auctex only for C-c C-c.

Michael


> On 28 Oct 2016, at 23:57, Fabrice Couvreur <fabrice1.couvreur@gmail.com> wrote:
> 
> Hi Mica,
> I added this  (custom-set-variables  ' (ConTeXt-Mark-version "IV"))  in my .emacs and it seems to work, thank you. 
> Another question : when I do a C-c C-c is texlive context of 2016 is called. How to be it standalone context ? 
> Fabrice
> 
> 2016-10-28 19:07 GMT+02:00 Mica Semrick <mica@silentumbrella.com <mailto:mica@silentumbrella.com>>:
> I haven't checked in a while, since this is already set in my init.el file, but auxtex was using mkii/texexec a few years ago. Have you checked you're using mkiv/context?
> 
> On October 28, 2016 6:04:27 AM PDT, Fabrice Couvreur <fabrice1.couvreur@gmail.com <mailto:fabrice1.couvreur@gmail.com>> wrote:
> Hello,
> I just upgraded to emacs24 and am having problems compiling my files who compiled perfectly with emacs23.
> I installed AUCTeX with M-x-install package and that's it !
> I deleted my old init.el file and start over !
> The ~/.emacs.d only contains this :
> 
> fab @ debian: ~ $ cd .emacs.d /
> fab @ debian: ~ / .emacs.d $ ls -l
> total 8
> drwx ------ 2 fab fab 4096 October 28 2:37 p.m. auto-save-list
> drwxr-xr-x 5 fab fab 4096 October 28 2:26 p.m. ELPA
> fab @ debian: ~ / $ .emacs.d
> 
> Consider the following file:
> If I make a C-c C-c, all I get is the text in italics, the macro is not compiled.
> Thanks,
> Fabrice
> 
> % macros=mkvi
> 
> \setupcolors[state=start]
> \definecolor[MyColorB][c=0.00, m=0.62, y=1.00, k=0.00]
> \definecolor[MyColorA][c=0.00, m=0.10, y=0.20, k=0.00]
> 
> 
> \defineframedtext
>   [MyDefinition]
>   [before={\blank[line,halfline]},
>    after={\blank},
>    frame=off,
>    background=MyFrame,
>    width=\textwidth,
>    height=fit,
>    location=left,
>    style=italic]
> 
> \defineoverlay
>   [MyFrame]
>   [\useMPgraphic{MyFrame}]
> 
> \definelabel
>   [Définition]
>   [headstyle=\bf\smallcaps]
> 
> \startuseMPgraphic{MyFrame}
>     path b ;
>     picture p ;
>     p := textext.rt("\white\Définition") ;
>     p := p shifted (2BodyFontSize,OverlayHeight-ypart center p+.25ExHeight) ;
>     b := boundingbox p leftenlarged .5EmWidth rightenlarged .5EmWidth ;
>     fill OverlayBox withcolor \MPcolor{MyColorA} ;
>     fill b withcolor \MPcolor{MyColorB} ;
>     draw leftboundary OverlayBox ;
>     draw p ;
>     setbounds currentpicture to OverlayBox ;
>   \stopuseMPgraphic
>   
> \starttext
> \startMyDefinition
> \input knuth
> \stopMyDefinition
> 
> \stoptext
> 
> %%% Local Variables: 
> %%% mode: context
> %%% End: 
> 
> 
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> / http://www.ntg.nl/mailman/listinfo/ntg-context <http://www.ntg.nl/mailman/listinfo/ntg-context>
> webpage  : http://www.pragma-ade.nl <http://www.pragma-ade.nl/> / http://context.aanhet.net <http://context.aanhet.net/>
> archive  : https://bitbucket.org/phg/context-mirror/commits <https://bitbucket.org/phg/context-mirror/commits>/
> wiki     : http://contextgarden.net <http://contextgarden.net/>
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> / http://www.ntg.nl/mailman/listinfo/ntg-context <http://www.ntg.nl/mailman/listinfo/ntg-context>
> webpage  : http://www.pragma-ade.nl <http://www.pragma-ade.nl/> / http://context.aanhet.net <http://context.aanhet.net/>
> archive  : https://bitbucket.org/phg/context-mirror/commits/ <https://bitbucket.org/phg/context-mirror/commits/>
> wiki     : http://contextgarden.net <http://contextgarden.net/>
> ___________________________________________________________________________________
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________