Make the Inkscape application run as a single instance... expect if --gapplication-app-id is set.

This avoids potential problems with copying between documents and prevents race conditions in saving preferences.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/inkscape-application.cpp b/src/inkscape-application.cpp
index 1ba4cd0b6..97233f32b 100644
--- a/src/inkscape-application.cpp
+++ b/src/inkscape-application.cpp
@@ -436,7 +436,11 @@ template<class T>
 ConcreteInkscapeApplication<T>::ConcreteInkscapeApplication()
     : T("org.inkscape.application.with_gui",
                        Gio::APPLICATION_HANDLES_OPEN | // Use default file opening.
-                       Gio::APPLICATION_NON_UNIQUE   ) // Allows different instances of Inkscape to run at same time.
+                       Gio::APPLICATION_CAN_OVERRIDE_APP_ID ) // Allows different instances of
+                                                              // Inkscape to run at same time using
+                                                              // --gapplication-app-id (useful for
+                                                              // debugging different versions of
+                                                              // Inkscape).
     , InkscapeApplication()
 {