This is from several helps and how-tos:

First, make same safe-guarding:
   > sudo cp /usr/share/mime/packages/freedesktop.org.xml 
/usr/share/mime/packages/freedesktop.org.xml_backup

Then, open  freedeskop.org.xml to edit mime:
   > sudo gedit /usr/share/mime/packages/freedesktop.org.xml

Now, you should find the end of one mime-specification and the beginning 
of next. I did mine just after Python Python mime-specification. Last 
two lines are:
   <glob pattern="*.py"/>
   </mime-type>
And the next mime-type begins with:
   <mime-type type=SOMETHING BLAH>

So, between the </mime-type> and <mime-type type=SOMETHING BLAH> insert 
this:
  <mime-type type="text/x-R">
    <sub-class-of type="text/plain"/>
    <comment>R code</comment>
    <comment xml:lang="az">R kodu</comment>
    <comment xml:lang="bg">??? ?? R</comment>
    <comment xml:lang="cs">Kód R</comment>
    <comment xml:lang="cy">Côd R</comment>
    <comment xml:lang="de">R-Befehle</comment>
    <comment xml:lang="el">??????? R</comment>
    <comment xml:lang="eo">R-kodo</comment>
    <comment xml:lang="es">Código R</comment>
    <comment xml:lang="eu">R kodea</comment>
    <comment xml:lang="fi">R-koodi</comment>
    <comment xml:lang="fr">code R</comment>
    <comment xml:lang="hu">R-kód</comment>
    <comment xml:lang="it">Codice R</comment>
    <comment xml:lang="ja">R ???</comment>
    <comment xml:lang="ko">R ??</comment>
    <comment xml:lang="ms">Kod R</comment>
    <comment xml:lang="nb">R-kildekode</comment>
    <comment xml:lang="nl">R-code</comment>
    <comment xml:lang="nn">R-kode</comment>
    <comment xml:lang="no">R-kildekode</comment>
    <comment xml:lang="pl">Kod R</comment>
    <comment xml:lang="pt">código R</comment>
    <comment xml:lang="pt_BR">Código R</comment>
    <comment xml:lang="sq">Kod R</comment>
    <comment xml:lang="sr">R ????</comment>
    <comment xml:lang="sv">R-kod</comment>
    <comment xml:lang="uk">??? R</comment>
    <comment xml:lang="zh_CN">R ??</comment>
    <glob pattern="*.R"/>
    <glob pattern="*.r"/>
  </mime-type>

Finally, update mime:
   > sudo update-mime-database /usr/share/mime/

That's it!

Best,
PM


Matthieu Stigler wrote:
>
>> I would like to recomment Gnome's editor: GEdit. It has some really 
>> nice Plugins, for LaTeX, Python etc. It also has Rgedit among other 
>> goodies. Go and check: http://live.gnome.org/Gedit/Plugins
>>
>> Good luck! And: Hello to Debian! :-)
>>
>> PM
>>   
> Btw, did anyone succeed in having gedit recognize .R files?
>
> For me (Ubuntu 9.10), it does only with .r files, using then the 
> appropriate code coloration mode, but not with .R files... Do yo uhave 
> the same problem? And found a solution?
>
> Thanks!
>
> Matthieu
>

-- 
#####################################################################################
Petar Milin
Department of Psychology, University of Novi Sad, Serbia
 &
Laboratory for Experimental Psychology, University of Belgrade, Serbia

Address:   Dr Zorana Dindica 2, Novi Sad 21000, Serbia
E-mail:    pmilin <AT> ff.uns.ac.rs
Tel.&Fax:  +381 21 458 948

Official homepage (in Serbian):
http://www.ff.uns.ac.rs/fakultet/ljudi/fakultet_odseci_psihologija_petar_milin.html

Personal homepage:
http://sites.google.com/site/pmilin/
#####################################################################################




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