Comment # 3 on bug 979265 from Wolfgang Bauer

(In reply to Enno Nagel from comment #2)
> For example if 
> 
> inode/directory=krusader.desktop

Where?

> then 
> 
> xdg-open . 
> 
> under awesome WM with the standard krusader.desktop file does not open
> Krusader.

Well, that's more a problem of xdg-open then, I suppose.
Do you get any error message?

> Now 
> 
> krusader --help 
> 
> and 
> 
> krusader --help-kde 
> 
> shows that 
> 
> krusader --caption %c 
> 
> is specific to KDE.

Yes, it is specific to KDE applications, just as e.g. "--writer" is specific to
LibreOffice.
Are applications not allowed any more to have their specific command line
options?

> Therefore, this option should only used under KDE,

This conclusion is wrong.

You can run "krusader -caption xxx" in any desktop session, just as you can run
"loffice --writer" in any desktop session.
Again, it's the application that evaluates this parameter, not the desktop
session (or xdg-open).

> ensured by renaming the current krusader.desktop file to
> kde-krusader.desktop

Now that's even more pointless IMHO, and won't do what you probably think it
would.

Btw, the correct line in mimeapps.list should probably be:
inode/directory=kde4-krusader.desktop
, because krusader.desktop is installed to /usr/share/applications/kde4/.
But krusader.desktop should find kde4/krusader.desktop as well.