writer_default_would_drop

Check whether writer_default and default_handler would ignore a message with the given domain and level.

As with default_handler, this function drops debug and informational messages unless their log domain (or `all`) is listed in the space-separated `G_MESSAGES_DEBUG` environment variable.

This can be used when implementing log writers with the same filtering behaviour as the default, but a different destination or output format:

	if (g_log_writer_default_would_drop (log_level, log_domain))
		return G_LOG_WRITER_HANDLED;

or to skip an expensive computation if it is only needed for a debugging message, and `G_MESSAGES_DEBUG` is not set:

	if (!g_log_writer_default_would_drop (G_LOG_LEVEL_DEBUG, G_LOG_DOMAIN))
		{
			gchar *result = expensive_computation (my_object);

			g_debug ("my_object result: %s", result);
			g_free (result);
		}

Parameters:

log_level	log level, either from LogLevelFlags, or a user-defined level
log_domain	log domain

Returns:

true if the log message would be dropped by GLib's default log handlers