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From: "Christopher M. Miles" <numbchild@gmail.com>
To: Ihor Radchenko <yantar92@posteo.net>
Cc: "Christopher M. Miles" <numbchild@gmail.com>,
	Org-mode <emacs-orgmode@gnu.org>, Matt <matt@excalamus.com>
Subject: Re: ob-shell sessions will send final echo '...' as input key sequence when previous command reads input interactively
Date: Mon, 01 May 2023 20:50:15 +0800	[thread overview]
Message-ID: <m2fs8gnr9g.fsf@numbchild@gmail.com> (raw)
In-Reply-To: <877cts8emr.fsf@localhost>

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Ihor Radchenko <yantar92@posteo.net> writes:

> "Christopher M. Miles" <numbchild@gmail.com> writes:
>
>>> So, it looks to me like mpv is somehow trying to interpret "echo" commands the
>>> ob-shell is sending after "mpv ...." is executed:
>> ...
>> Don't know ob-shell which part did your said "echo" commands. I don't
>> know where to dig this issue. Hope you can help. Thanks for your
>> reproducing problem and dive in.
>
> The underlying issue lies within how comint works + the fact that mpv
> reads key input from terminal.
>
> Try the following:
>
> 1. emacs -Q
> 2. M-x shell
> 3. cd /path/to/your/video <RET>
> 4. Copy the following into kill ring
> -----
> mpv "枕刀歌/《枕刀歌》SE05 江海阔 歌谣哼唱.mp4"
> m_
> -----
> 5. (in the shell buffer): C-y <RET>
> 6. Observe mpv playing no sound and video
> 7. Press m_ to restore video and sound.
>

I reproduced same now. Thanks for your guide.

> I am not sure if we can do much about this though.
> We run async shell commands in sessions using
>
> (insert (format ob-shell-async-indicator "start" uuid))
> (comint-send-input nil t)
> (insert (org-trim body))
> (comint-send-input nil t)
> (insert (format ob-shell-async-indicator "end" uuid))
> (comint-send-input nil t)
>
> which sends
>
> "echo '....'
> <your command>
> echo '...'"
>
> to comint terminal session.
>
> The last echo '...' in this case is interpreted as key input by mpv -
> symbol by symbol.
>
> The only way I know how to work around this is a giant one-liner like
> echo '....'; <your command>; echo '...'
>

I understand the process now, it is wrapped by ob-shell-async-indicator echo command.

> However, (1) ";" may not work in some shells; (2) <your command> may
> contain multiple lines, leading to the same issue.

I tested it (using ";") now, not working.

I might consider to use another language like python instead of sh to
execute command to play video to get around this issue. I will update
here if I success.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

Blog: https://stardiviner.github.io/
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  reply	other threads:[~2023-05-01 12:58 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-30  4:27 [Need Help] Error to evaluate "mpv" command in inline src block stardiviner
2023-04-30  4:46 ` Ruijie Yu via General discussions about Org-mode.
2023-04-30 10:59   ` Christopher M. Miles
2023-04-30 14:52 ` Ihor Radchenko
2023-05-01  3:39   ` Christopher M. Miles
2023-05-01  7:45     ` Ihor Radchenko
2023-05-01 10:46       ` Christopher M. Miles
2023-05-01 11:39         ` ob-shell sessions will send final echo '...' as input key sequence when previous command reads input interactively (was: [Need Help] Error to evaluate "mpv" command in inline src block) Ihor Radchenko
2023-05-01 12:50           ` Christopher M. Miles [this message]
2023-05-01 13:14             ` ob-shell sessions will send final echo '...' as input key sequence when previous command reads input interactively Ihor Radchenko
2023-05-01 13:41               ` Christopher M. Miles
2023-05-01 14:20                 ` Ihor Radchenko
2023-05-01 19:06                   ` Christopher M. Miles
2023-05-01 13:08           ` [SOLUTION] a temporary workaround solution using another language like "python" Christopher M. Miles
     [not found]           ` <35881.2693202466$1682946783@news.gmane.org>
2023-05-01 13:35             ` Max Nikulin
2023-05-01 19:01               ` Christopher M. Miles
2023-05-01 19:16                 ` Ihor Radchenko
2023-05-02  4:17                   ` [CLOSED] [ANSWER] " Christopher M. Miles
2023-05-02 20:31           ` ob-shell sessions will send final echo '...' as input key sequence when previous command reads input interactively (was: [Need Help] Error to evaluate "mpv" command in inline src block) Matt
2023-05-03 10:41             ` Ihor Radchenko
2023-05-03 11:01               ` ob-shell sessions will send final echo '...' as input key sequence when previous command reads input interactively Christopher M. Miles
2023-05-03 12:01                 ` Ihor Radchenko
2023-05-03 16:31                   ` Christopher M. Miles
2023-05-01 10:50       ` [Need Help] Error to evaluate "mpv" command in inline src block Christopher M. Miles

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