" Metadata for error domain" warning when using File>New

[jazzynico]

When I open a new template with File>New (tested with different templates) or the New icon or Ctrl+N, the console shows the following message:

** (inkscape:5026): WARNING **: Metadata for error domain "inkscape_error" already registered

It doesn't occur when opening an existing document, and is not dependent on the document (new or existing) previously opened. I haven't tested it exhaustively, but it doesn't seem to affect the document or Inkscape's behavior.

Reproduced on Ubuntu 10.10, Inkscape revision 10517.
Not reproduced with 0.48.

[su_v (suv-lp)]

I only get these messages with a dbus-enabled, optimized (-O3) build on Mac OS X 10.5.8 (i386) - IIRC the dbus-enabled build also sometimes produces other (critical) console warnings when working with multiple windows (within one Inkscape instance), after closing a window.

A normally configured build (without dbus, compiled with '-O0') doesn't produce the warnings.

[su_v (suv-lp)]

AFAICT the error message is from dbus-glib:
<http://cgit.freedesktop.org/dbus/dbus-glib/tree/dbus/dbus-gobject.c#n2427>

[Marcin Floryan (mfloryan)]

Yes. I can confirm I'm running this with dbus compiled in.

[John Smith (john-smithi)]

This patch moves the function call to dbus_g_error_domain_register from the "desktop init" to the "application init", so it should only get called once per session.
Could a dbus expert check that things are still working correctly ?

[jazzynico (jazzynico)]

Tested on Ubuntu 11.04, Inkscape revision 11661.
Console message fixed, but I haven't tested dbus to confirm there's no regression.

Thanks for the patch!

[su_v (suv-lp)]

> Could a dbus expert check that things are still working correctly ?

@joakim - I'm subscribing you to this report with the hope that you - as _the_ famous dbus-expert for Inkscape (inkmacs) - would be willing to test&review the proposed patch attached to comment #4… Any feedback would be highly appreciated!

---
I'm not a dbus expert at all - my tests are basically limited to those demonstrated in 'src/extension/dbus/pytester.py'.

With r11659+818628.patch, those things I got working without the patch still work with the patch applied, e.g.:
- creating shapes/objects in the current (initial) desktop
- manipulating a current selection of the current desktop (e.g. duplicate and translate)
- opening a new desktop, and create new shapes in the second document window (desktop)
- connecting to the second document window (desktop) and manipulate a selection there [1]
- …

[ tested on OS X 10.7.4
 - GTK+/X11 2.24.10, glib 2.32.4, dbus-glib 0.100, dbus 1.4.20
 - GTK+/X11 2.24.11, glib 2.33.10, dbus-glib 0.100, dbus 1.4.20 ]

[1] Due to my lack of experience with dbus as well as python, I haven't managed yet to write a python function which queries the dbus interface for a list of available desktops, and then connects to one of them. Currently I'm using d-feet to see the object path of the second desktop opened via dbus to be able to reuse it in the script.

[John Smith (john-smithi)]

Committed to trunk as r11674.
If there are any issues, please reopen this report.