When I double click a file,
pcmanfm launch the default application to open it,
like launch OO.o to open a *.doc file.
If I remove OO.o then double click a *.doc file,
Nothing will happen becouse OO.o is removed.
It sometimes confuse me.
I think pcmanfm should alert when trying to launch a
application, like /usr/bin/ooffice to open a *.doc but
the application doesn't exit.
Please consider to support it. Thanks.