mintmenu crashed if exec line in desktop files didn't work

[raveit65]

fedora bugzilla report:
https://bugzilla.redhat.com/show_bug.cgi?id=1054781

my test results with using mate-panel-test-applets:
gnome-weather.desktop
Icon=org.gnome.Weather.Application
Exec=/usr/share/org.gnome.Weather.Application/org.gnome.Weather.Application
DBusActivatable=true
StartupNotify=true

terminal output:
(mintMenu.py:32449): Gtk-WARNING **: Failed to set text from markup due to error parsing markup: Fehler in Zeile 1: Entität endete nicht mit einem Semikolon; wahrscheinlich haben Sie ein &-Zeichen benutzt, ohne eine Entität beginnen zu wollen - umschreiben Sie das »&« als &
Binding to Hot Key: Super_L
/usr/share/org.gnome.Weather.Application/org.gnome.Weather.Application

Unfortunately there isn't more output, gnome-weather simply doesn't start.

fedorautils.destop (which needs a terminal)
[Desktop Entry]
Name=Fedora Utils
GenericName=Fedora Utils
Icon=fedorautils
Comment=Software, Codec Installs & System Tweaks
Exec=fedorautils
Terminal=true
Type=Application
Categories=System;Utility;X-Fedora;
Keywords=clean;codec;fix;postinstall;propietary;repo;

terminal output:

(mintMenu.py:32449): Gtk-WARNING **: Failed to set text from markup due to error parsing markup: Fehler in Zeile 1: Entität endete nicht mit einem Semikolon; wahrscheinlich haben Sie ein &-Zeichen benutzt, ohne eine Entität beginnen zu wollen - umschreiben Sie das »&« als &
running manually...
sh: x-terminal-emulator: Kommando nicht gefunden.

Note, in fedora we don't have this command.

google translation:
(mintMenu.py: 32449): Gtk-WARNING **: Failed to set text from markup due to error parsing markup: Error on line 1: Entity did not end with a semicolon; most likely you used an ampersand without an entity want to start - you rewrite the "&" as &

[clefebvre]

Fixed the crash.
Fixed using x-terminal-emulator instead of mate-terminal.
Didn't add support for DbusActivatable, I found the spec on freedesktop but I couldn't find any implementation anywhere. If somebody wants to do the ground work and come back to me with either a pull request, a patch, or even a "dbus-send" command I can run, I'd be happy to fix this as well.

[raveit65]

Thx Clem, i will try out to find the right dbus-send command

[stefano-k]

@NiceandGently @clefebvre maybe it will be useful:
https://bugs.freedesktop.org/show_bug.cgi?id=64066
https://bugs.freedesktop.org/attachment.cgi?id=81915