616   LBUFFER *first, *last, *tmp;  in pipe_lines()  local
624   tmp = xmalloc (sizeof (LBUFFER));  in pipe_lines()
629       n_read = safe_read (fd, tmp->buffer, BUFSIZ);  in pipe_lines()
632       tmp->nbytes = n_read;  in pipe_lines()
634       tmp->nlines = 0;  in pipe_lines()
635       tmp->next = nullptr;  in pipe_lines()
639         char const *buffer_end = tmp->buffer + n_read;  in pipe_lines()
640         char const *p = tmp->buffer;  in pipe_lines()
644             ++tmp->nlines;  in pipe_lines()
647       total_lines += tmp->nlines;  in pipe_lines()
652       if (tmp->nbytes + last->nbytes < BUFSIZ)  in pipe_lines()
654           memcpy (&last->buffer[last->nbytes], tmp->buffer, tmp->nbytes);  in pipe_lines()
655           last->nbytes += tmp->nbytes;  in pipe_lines()
656           last->nlines += tmp->nlines;  in pipe_lines()
665           last = last->next = tmp;  in pipe_lines()
668               tmp = first;  in pipe_lines()
673             tmp = xmalloc (sizeof (LBUFFER));  in pipe_lines()
677   free (tmp);  in pipe_lines()
703   for (tmp = first; total_lines - tmp->nlines > n_lines; tmp = tmp->next)  in pipe_lines()
704     total_lines -= tmp->nlines;  in pipe_lines()
708     char const *beg = tmp->buffer;  in pipe_lines()
709     char const *buffer_end = tmp->buffer + tmp->nbytes;  in pipe_lines()
725   for (tmp = tmp->next; tmp; tmp = tmp->next)  in pipe_lines()
726     xwrite_stdout (tmp->buffer, tmp->nbytes);  in pipe_lines()
731       tmp = first->next;  in pipe_lines()
733       first = tmp;  in pipe_lines()
753   CBUFFER *first, *last, *tmp;  in pipe_bytes()  local
762   tmp = xmalloc (sizeof (CBUFFER));  in pipe_bytes()
767       n_read = safe_read (fd, tmp->buffer, BUFSIZ);  in pipe_bytes()
771       tmp->nbytes = n_read;  in pipe_bytes()
772       tmp->next = nullptr;  in pipe_bytes()
774       total_bytes += tmp->nbytes;  in pipe_bytes()
778       if (tmp->nbytes + last->nbytes < BUFSIZ)  in pipe_bytes()
780           memcpy (&last->buffer[last->nbytes], tmp->buffer, tmp->nbytes);  in pipe_bytes()
781           last->nbytes += tmp->nbytes;  in pipe_bytes()
790           last = last->next = tmp;  in pipe_bytes()
793               tmp = first;  in pipe_bytes()
799               tmp = xmalloc (sizeof (CBUFFER));  in pipe_bytes()
804   free (tmp);  in pipe_bytes()
815   for (tmp = first; total_bytes - tmp->nbytes > n_bytes; tmp = tmp->next)  in pipe_bytes()
816     total_bytes -= tmp->nbytes;  in pipe_bytes()
824   xwrite_stdout (&tmp->buffer[i], tmp->nbytes - i);  in pipe_bytes()
826   for (tmp = tmp->next; tmp; tmp = tmp->next)  in pipe_bytes()
827     xwrite_stdout (tmp->buffer, tmp->nbytes);  in pipe_bytes()
832       tmp = first->next;  in pipe_bytes()
834       first = tmp;  in pipe_bytes()