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From: Jim <linux.tech.guy@gmail.com>
To: Roman Perepelitsa <roman.perepelitsa@gmail.com>
Cc: zsh <zsh-users@zsh.org>
Subject: Re: strange interaction between read command and pipe to less from function
Date: Sun, 26 Mar 2023 10:28:26 -0500	[thread overview]
Message-ID: <CA+rB6GKWVJ2C1pxzykWHMT-GzmcSo0GzBmS0TSAe2PpnOvGxww@mail.gmail.com> (raw)
In-Reply-To: <CAN=4vMpUG2xqpsOFg-o_9LaO_j5eMTFgErjaUfvTQSonqETetQ@mail.gmail.com>

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On Sun, Mar 26, 2023 at 9:56 AM Roman Perepelitsa <
roman.perepelitsa@gmail.com> wrote:

> On Sun, Mar 26, 2023 at 4:34 PM Jim <linux.tech.guy@gmail.com> wrote:
> >
> > [...] a function I am testing [...] has the following read statement
> which is part of a loop:
> >
> > for N ({0..255}) {
> >   read -s -t1 -d $'\a' $'c?\e]4;'${N}$';?\a' && XC+=("$N ${c##*;}")
> > }
> >
> > The issue is when the output of my function is piped to less.
>
> Both the function and less read from the TTY. Which of them will
> succeed when you press a key is anyone's guess.
>
> Roman.
>

OK, but if the read is already completed, shouldn't less be in control?
I just added 'sleep 2' before the print statement and still see the same
result.
Even if the last read didn't receive any input it should have timed
out(-t1).
What am I not understanding?  Using command as follows:

cvt_256_colors_2_rgb_hex_fmt | less

Thanks for the quick response.

Jim

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  reply	other threads:[~2023-03-26 15:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-26 14:33 Jim
2023-03-26 14:55 ` Roman Perepelitsa
2023-03-26 15:28   ` Jim [this message]
2023-03-26 15:49     ` Roman Perepelitsa
2023-03-26 17:04       ` Jim
2023-03-26 17:23         ` Roman Perepelitsa
2023-03-26 23:50           ` Lawrence Velázquez

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