my .emacs looks like this: 

;; Open in ConTeXt mode

(add-hook 'LaTeX-mode-hook 'TeX-PDF-mode) ;; AucTeX turn on PDF mode by default

(add-hook 'LaTeX-mode-hook (function turn-on-reftex)) ;; Turn on RefTeX when AucTeX loads

(add-hook 'ConTeXt-mode-hook 'yas/minor-mode-on) ;; Turn on YaSnippet minor mode in ConTeXt-en-mode

(add-hook 'ConTeXt-mode-hook (function turn-on-reftex)) ;; Turn on RefTeX when AucTeX loads

(setq TeX-default-mode 'context-mode) ;; Make context-mode the default tex-mode

(setq reftex-plug-into-AUCTeX t) ;; Turn on RefTeX when AucTeX loads

(add-hook 'TeX-mode-hook '(lambda () (TeX-fold-mode 1)))

;; Add option for MKIV and make it the default for C-c C-c

(add-hook 'ConTeXt-mode-hook (lambda()

(add-to-list 'TeX-command-list '("ConTeXt MKIV" "context %t" TeX-run-TeX nil (context-mode) ))

(setq TeX-command-default "ConTeXt MKIV")

(setq TeX-save-query  nil )

))

On Fri, Jan 10, 2014 at 1:37 PM, Peter Münster <pmlists@free.fr> wrote:

On Fri, Jan 10 2014, Fabrice Couvreur wrote:

> %%% Local Variables:
> %%% Mode: LaTeX
> %%% LaTeX-command "LuaLaTeX-shell-escape"
> %%% End:

%%% Local Variables:

%%% Mode: context
%%% End:

For using "context" instead of "texexec", put this in your init-file:

(eval-after-load 'tex
  '(add-to-list
      'TeX-command-list
      '("ConTeXt" "context --nonstopmode %t"
        TeX-run-TeX nil (context-mode) :help "Run ConTeXt")))

If you prefer to use context-mode by default for every file with ".tex" as
suffix, then you can add this to your init-file:

(add-to-list 'auto-mode-alist '("\\.tex\\'" . context-mode))

Then you won't need the "Local Variables" section at the end of each
ConTeXt-file.

--
           Peter

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___________________________________________________________________________________
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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________