751     out_slice: &mut [u8],  in transfer()
757     debug_assert!(out_pos + match_len <= out_slice.len());  in transfer()
760         out_slice[out_pos] = out_slice[source_pos & out_buf_size_mask];  in transfer()
761         out_slice[out_pos + 1] = out_slice[(source_pos + 1) & out_buf_size_mask];  in transfer()
762         out_slice[out_pos + 2] = out_slice[(source_pos + 2) & out_buf_size_mask];  in transfer()
763         out_slice[out_pos + 3] = out_slice[(source_pos + 3) & out_buf_size_mask];  in transfer()
770         1 => out_slice[out_pos] = out_slice[source_pos & out_buf_size_mask],  in transfer()
772             out_slice[out_pos] = out_slice[source_pos & out_buf_size_mask];  in transfer()
773             out_slice[out_pos + 1] = out_slice[(source_pos + 1) & out_buf_size_mask];  in transfer()
776             out_slice[out_pos] = out_slice[source_pos & out_buf_size_mask];  in transfer()
777             out_slice[out_pos + 1] = out_slice[(source_pos + 1) & out_buf_size_mask];  in transfer()
778             out_slice[out_pos + 2] = out_slice[(source_pos + 2) & out_buf_size_mask];  in transfer()
787     out_slice: &mut [u8],  in apply_match()
793     debug_assert!(out_pos + match_len <= out_slice.len());  in apply_match()
799         out_slice[out_pos] = out_slice[source_pos];  in apply_match()
800         out_slice[out_pos + 1] = out_slice[(source_pos + 1) & out_buf_size_mask];  in apply_match()
801         out_slice[out_pos + 2] = out_slice[(source_pos + 2) & out_buf_size_mask];  in apply_match()
807         transfer(out_slice, source_pos, out_pos, match_len, out_buf_size_mask);  in apply_match()
812         transfer(out_slice, source_pos, out_pos, match_len, out_buf_size_mask);  in apply_match()
813     } else if match_len <= dist && source_pos + match_len < out_slice.len() {  in apply_match()
816             let (from_slice, to_slice) = out_slice.split_at_mut(out_pos);  in apply_match()
819             let (to_slice, from_slice) = out_slice.split_at_mut(source_pos);  in apply_match()
823         transfer(out_slice, source_pos, out_pos, match_len, out_buf_size_mask);  in apply_match()