How to open some files based on extension rather than mime type?

[John Hupp]

OK, a happy discovery.  LxSession Default Apps does not do the same 
thing as R-Click: Open With: <app> + checking "Always use ..."

If I do the latter with an .odt file, then LxSession Default Apps still 
has Documents: AbiWord, but odt docs open with LibreOffice. And abw docs 
open with AbiWord.

I see now also that the properties of an odt file show File Type: 
OpenDocument Text.  The format has its own mime type which can be used 
(but is not used by default) as the basis for the kind of granular 
control I wanted.

So lxsession-default-apps and pcmanfm are apparently doing something 
different in the back end with mime types.  I read somewhere that there 
are perhaps 4 different mime type configuration files which are 
respected in some hierarchy.

On 1/15/2015 10:17 AM, Andre Rodovalho wrote:
> You can set this at*lxsession-default-apps*
> *Menu > Preferences > LxSession Default Apps
> *
> OR
>
> *Right click* on the file you want to set. Let say, a Document.odt. On 
> the menu, choose *Properties*. At the Properties windows, select the 
> software you want to open as default on the "*Open With*" combobox 
> (drop down menu)... Then hit *OK*.
>
> Double click the file to see if works...
>
>
>
> 2015-01-14 17:57 GMT-02:00 John Hupp <lubuntu at prpcompany.com 
> <mailto:lubuntu at prpcompany.com>>:
>
>     I don't understand mime types very well, but it seems like the net
>     effect as implemented is that they don't result in very granular
>     control.
>
>     To be specific, I find that if I use LibreOffice Writer to create
>     an .odt file, a double-click on the file in pcmanfm results in
>     AbiWord opening the file.
>
>     I would like LibreOffice to open odt files, AbiWord to open abw
>     files, and leafpad to open plain text files.  But
>     lxsession-default-apps merely sets a "Document" launcher.
>
>     Can set up finer control to open some files according to their
>     extension?
>
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