From: Johannes Thyssen Tishman <jtt@openbsd.org>
Subject: Re: cal: add option to highlight the current day
To: Walter Alejandro Iglesias <wai@roquesor.com>
Cc: tech@openbsd.org
Date: Sun, 5 Jul 2026 11:06:19 +0000

2026-07-05T12:38:13+0200 Walter Alejandro Iglesias <wai@roquesor.com>:
> On Sat, Jul 04, 2026 at 07:25:20AM -0600, Theo de Raadt wrote:
> > Calling tgetent() late is bizzare, and it made you do this:
> > 
> > -       if (pledge("stdio", NULL) == -1)
> > +       if (pledge("stdio rpath tty", NULL) == -1)
> >                 err(1, "pledge");
> > 
> > In a word: Nope.
> > 
> > 
> 
> I've had this patch for a while.  I didn't post it here because I
> thought no one would be interested.  Now I've updated it with the latest
> sources.
> 
> When you pipe the output to a file it does not send the highlight code.
> 
> It also corrects separation between rows of months with cal -y.

Hi Walter, thanks for sharing. I see that you did some things
differently in your patch. Perhaps you could send these as suggestions
to the patch I sent if you prefer them? This way we can avoid splitting
the thread.

I've also thought about printing the calendar day by day directly in the
loop instead filling a buffer first. Perhaps others have an opinion on
this. However, I think it's better to get the escape sequences with
tgetstr instead of hardcoding them, as this honors termcap.

Regarding the separation between rows of months with cal -y, I see your
point. However, the rows all have a hight of 8 lines. Yes, there's not
always an empty line between months, but I think I prefer a consistent
grid. Perhaps this could be discussed in a separate thread.