Subject: bug#29668: grep: Fatal problem with (big) file

From: Paul Eggert <[email-masked]>
Date: Tue, 12 Dec 2017 16:28:09 -0800

On 12/11/2017 03:36 PM, Norihiro Tanaka wrote:
> Perhaps, characters not to be able to recognize in your locale included
> in Tieliikenne 5.0.csv and volvot.csv are included.

Yes, that's the problem. The original 'grep' output ended in "Binary 
file Tieliikenne5.0.csv matches" but the user didn't see that. Perhaps 
we should send that diagnostic to stderr as well.