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GApplication: Beef up the local_command_line() docs
This adds some details, such as the meaning of @argc, @argv and @status, even though gtk-doc does not make it easy to document vfunc arguments. Requested in https://bugzilla.gnome.org/show_bug.cgi?id=643478
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@ -1165,9 +1165,19 @@ g_application_open (GApplication *application,
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* is intended to be returned by main().
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*
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* First, the local_command_line() virtual function is invoked.
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* This function always runs on the local instance. If it returns
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* %FALSE then the application is registered and the
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* #GApplication::command-line signal is emitted in the primary
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* This function always runs on the local instance. It gets passed
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* pointers to @argc and @argv and is expected to remove the arguments
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* that it handled from @argv (shifting up remaining arguments, and
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* reducing @argc accordingly). See <xref linkend="gapplication-example-cmdline2"/> for an example. The last argument to local_command_line() is a
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* pointer to the @status variable which can used to set the exit
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* status that is returned from g_application_run().
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*
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* If local_command_line() returns %TRUE, the command line is expected
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* to be completely handled, including possibly registering as the primary
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* instance, calling g_application_activate() or g_application_open(), etc.
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*
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* If local_command_line() returns %FALSE then the application is registered
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* and the #GApplication::command-line signal is emitted in the primary
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* instance (which may or may not be this instance).
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*
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* If the application has the %G_APPLICATION_HANDLES_COMMAND_LINE
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@ -1186,7 +1196,9 @@ g_application_open (GApplication *application,
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*
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* If you are interested in doing more complicated local handling of the
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* commandline then you should implement your own #GApplication subclass
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* and override local_command_line(). See
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* and override local_command_line(). In this case, you most likely want
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* to return %TRUE from your local_command_line() implementation to
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* suppress the default handling. See
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* <xref linkend="gapplication-example-cmdline2"/> for an example.
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*
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* If, after the above is done, the use count of the application is zero
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