lookup_image_type 1275 src/image.c    static struct image_type const *lookup_image_type (Lisp_Object);
lookup_image_type 1309 src/image.c    		    lookup_image_type (XCAR (tail));
lookup_image_type 1658 src/image.c      img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL));
lookup_image_type 12593 src/image.c      return lookup_image_type (type) ? Qt : Qnil;