Iobuf.Blit_consumeBlit_consume copies between iobufs and advances src but does not advance dst.
val blit : src:([> Core_kernel.read ], seek) t -> dst:([> Core_kernel.write ], _) t -> dst_pos:int -> len:int -> unitval blito : src:([> Core_kernel.read ], seek) t -> ?src_len:int -> dst:([> Core_kernel.write ], _) t -> ?dst_pos:int ->
unit -> unitval unsafe_blit : src:([> Core_kernel.read ], seek) t -> dst:([> Core_kernel.write ], _) t -> dst_pos:int -> len:int ->
unitval sub : ([> Core_kernel.read ], seek) t -> len:int -> (_, _) tval subo : ?len:int -> ([> Core_kernel.read ], seek) t -> (_, _) tval blit_maximal : src:([> Core_kernel.read ], seek) t -> dst:([> Core_kernel.write ], _) t -> ?dst_pos:int -> unit -> int