supported_extensions = get_supported_image_extensions ();
for (i = 0; cbr_files[i] != NULL; i++) {
gchar *suffix = g_strrstr (cbr_files[i], ".");
supported_extensions = get_supported_image_extensions ();
for (i = 0; cbr_files[i] != NULL; i++) {
gchar *suffix = g_strrstr (cbr_files[i], ".");