Subject: Re: bug#29154: 25.3; Eshell: Pipes seem to hang or corrupt data when text chunk is large (>10k lines)

From: Noam Postavsky <[email-masked]>
Date: Sun, 05 Nov 2017 06:45:53 -0500

close 29154
merge 29154 25549
quit

Pierre Neidhardt <[email-masked]> writes:

> - emacs -Q
> - M-x eshell
>
> 	~ $ time cat /usr/share/dict/words | wc -l
> 	234937
> 	12.005 secs
> 	~ $ time cat /usr/share/dict/words | wc -l
> 	234937
> 	12.010 secs
> 	~ $ time cat /usr/share/dict/words | wc -l
> 	234937
> 	11.321 secs
> 	~ $ time cat /usr/share/dict/words | wc -l
> 	234937
> 	11.861 secs
> 	~ $ time cat /usr/share/dict/words | wc -l
> 	188508
> 	3.734 secs
> 	~ $ 
>
> Notice in the last case that the output is wrong.
>
> Sometimes the above command seeminly never terminates, or maybe it's
> just taking too long for my patience.
>
> Because of its randomness, it's hard to reproduce.

This is Bug#25549, it should already be fixed in the 26.0.90 pretest
release.