Ok, so if you do this:
* right click on the desktop -> Create Document -> Empty file
* name it test
* right click on it -> open with -> "gedit"
* enter "zenity --calendar"
* save and quit
* right click on the file -> properties -> permissions
* activate owner "execute"
* close
* double click on it
You don't get the "Run or Display ?" dialog ? (here it works)
Ok, so if you do this:
* right click on the desktop -> Create Document -> Empty file
* name it test
* right click on it -> open with -> "gedit"
* enter "zenity --calendar"
* save and quit
* right click on the file -> properties -> permissions
* activate owner "execute"
* close
* double click on it
You don't get the "Run or Display ?" dialog ? (here it works)