GNU bug report logs - #18402
Wrong output for single character files without newline

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Package: diffutils;

Reported by: Eric Blake <eblake <at> redhat.com>

Date: Wed, 3 Sep 2014 21:05:02 UTC

Severity: normal

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Jim Meyering <jim <at> meyering.net>, 18402 <at> debbugs.gnu.org
Subject: bug#18402: [bug-diffutils] bug#18402: bug#18402: Wrong output for single character files without newline
Date: Wed, 03 Sep 2014 17:20:08 -0700

Jim Meyering wrote:
> can you give performance deltas on moderate
> or pathologically affected inputs?

Maybe something like this:

diff --horizon-lines=100000000000000000000 gnulib/ChangeLog /tmp/ChangeLog

where the two files are copies.  The bug fix sped up performance about 
5x on my platform, which is Fedora 20 x86-64, AMD Phenom II X4 910e.
This bug report was last modified 10 years and 321 days ago.

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