GNU bug report logs - #47243
pr lacks -p

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From: Stan Marsh <gazelle <at> xmission.com>
To: 47243 <at> debbugs.gnu.org
Subject: bug#47243: pr lacks -p
Date: Mon, 28 Jul 2025 08:41:00 -0600

>Paul Eggert <eggert <at> cs.ucla.edu> writes:

>Thanks for looking into that. Unfortunately POSIX says -p should be
>ignored only if standard output is a terminal, and that newline should
-----------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Shouldn't this be "ignored unless standard output is a terminal" ?

>be read from /dev/tty, not from standard input. This is so that users
>can pipe into 'pr -p'. So the proposed patch needs some changes. Here
>are the issues I found:

Then	Pádraig Brady wrote:
>Reading POSIX more closely I see there is also pause logic for the first page 
>only:
>  -f    [XSI] [Option Start] Use a <form-feed> for new pages, instead of the default 
>behavior that uses a sequence of <newline> characters.
>        Pause before beginning the first page if the standard output is 
>associated with a terminal. [Option End]

How can it be both?

And, one wonders, why do both -F and -f do the same thing?
(The man page on my system says they do...)

Note: I've been using -F with pr since forever; I had no idea (until now) that -f
did the same thing.

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