GNU bug report logs - #72117
Command doesn't execute correctly in eshell

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From: Jim Porter <jporterbugs <at> gmail.com>
To: the_wurfkreuz <the_wurfkreuz <at> proton.me>, 72117 <at> debbugs.gnu.org
Subject: bug#72117: Command doesn't execute correctly in eshell
Date: Sun, 14 Jul 2024 18:01:09 -0700

[Message part 1 (text/plain, inline)]

On 7/14/2024 12:33 PM, the_wurfkreuz via Bug reports for GNU Emacs, the 
Swiss army knife of text editors wrote:
> First of all, i can't execute 'sudo lsof | grep delete | head -10' in
> eshell.

'sudo -S' should help here: it'll output the sudo password prompt on 
stderr so that Eshell can see it and handle password entry. (You should 
be able to enter your password anyway, but without the -S it would just 
be echoed to the screen.)

 But that's not the most interesting part. I can execute the
> command with 'eshell/sudo'. But after the command execution emacs will
> take the whole CPU processing time if i have 
> '(global-display-line-numbers-mode 1)'
> option enabled.

I can't reproduce this particular issue, but I can reproduce *an* issue. 
It seems to be due to "head -10" exiting early (as it should), which 
results in a broken pipe. However, Eshell's broken pipe handling wasn't 
properly cleaning up the process ("grep" in this example).

[0001-Use-kill-process-as-a-fallback-when-a-pipe-gets-brok.patch (text/plain, attachment)]

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