23 Jul
2022
23 Jul
'22
7:36 p.m.
Hi Rob,
Very odd. I thought so too, but the 8th Edition manual
says pr -n
prints in n columns, while the 9th and 10th say it numbers the lines.
8th Edition's pr.c has -n and -x which both turn on line numbers.
The optional argument gives the width used for the line number.
https://minnie.tuhs.org/cgi-bin/utree.pl?file=V8/usr/src/cmd/pr.c
case 'n':
case 'x': /* retained for historical reasons */
++Lnumb;
if ((Numw = intopt(argv, &Nsepc)) <= 0)
Numw = NUMW;
if (Lnumb && C != EOF && (colno == 0 || Multi == 'a')) {
if (Page >= Fpage) {
putspace();
printf("%*ld", Numw, Buffer ?
Colpts[colno].c_lno++ : Lnumb);
Outpos += Numw;
put(Nsepc);
}
++Lnumb;
}
I think -n and -x are undocumented in the matching man page.
https://minnie.tuhs.org/cgi-bin/utree.pl?file=V8/usr/man/man1/pr.1
The -n you're referring to is an italic ‘n’, e.g. -3 for three columns.
.TP
.BI \- n
Produce
.IR n -column
output.
--
Cheers, Ralph.