GTK Printing Demo updates patch review request

[Timothy Arceri <t_arceri yahoo com au>]

Hi Guys,

              I uploaded a patch a couple of month ago to reduce the amount of code used in the GTK printing demo when implementing a custom name for the print to file. This new code is based on the new GTK_PRINT_SETTINGS_OUTPUT_BASENAME print setting.

Is someone able to review this patch and if its acceptable push to master?

https://bugzilla.gnome.org/show_bug.cgi?id=676787

Thanks,

Tim