GNU bug report logs - #64461
strange output of "diff -l -y"

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Package: diffutils;

Reported by: Bruno Haible <bruno <at> clisp.org>

Date: Tue, 4 Jul 2023 16:48:01 UTC

Severity: normal

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

Bug is archived. No further changes may be made.

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Report forwarded to bug-diffutils <at> gnu.org:
bug#64461; Package diffutils. (Tue, 04 Jul 2023 16:48:01 GMT) Full text and rfc822 format available.
Acknowledgement sent to Bruno Haible <bruno <at> clisp.org>:
New bug report received and forwarded. Copy sent to bug-diffutils <at> gnu.org. (Tue, 04 Jul 2023 16:48:01 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Bruno Haible <bruno <at> clisp.org>
To: bug-diffutils <at> gnu.org
Subject: strange output of "diff -l -y"
Date: Tue, 04 Jul 2023 18:47:04 +0200

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

Seen with diffutils 'master' branch today:

$ cat foo1.txt
你好
$ cat foo2.txt
早晨, 你好
$ src/diff -y foo1.txt foo2.txt
你好                                                          | 早晨, 你好
$ src/diff -l -y foo1.txt foo2.txt


2023-07-04 18:41           diff -l -y foo1.txt foo2.txt           Page 1


                                                              | , 




























































你好早晨你好

(and the last line is not terminated by a newline).

This is strange, isn't it? 'diff' has separate the ASCII from the
non-ASCII parts of the input. With the attached patch, the output becomes:

$ src/diff -l -y foo1.txt foo2.txt


2023-07-04 18:42           diff -l -y foo1.txt foo2.txt           Page 1


你好                                                          | 早晨, 你好





























































(which is more what I had expected).


[0001-diff-Fix-output-of-diff-l-y-for-non-ASCII-input-file.patch (text/x-patch, attachment)]
Reply sent to Paul Eggert <eggert <at> cs.ucla.edu>:
You have taken responsibility. (Tue, 04 Jul 2023 17:48:02 GMT) Full text and rfc822 format available.
Notification sent to Bruno Haible <bruno <at> clisp.org>:
bug acknowledged by developer. (Tue, 04 Jul 2023 17:48:02 GMT) Full text and rfc822 format available.

Message #10 received at 64461-done <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Bruno Haible <bruno <at> clisp.org>
Cc: 64461-done <at> debbugs.gnu.org
Subject: Re: [bug-diffutils] bug#64461: strange output of "diff -l -y"
Date: Tue, 4 Jul 2023 10:47:35 -0700

[Message part 1 (text/plain, inline)]
Thanks, I installed that, followed by the attached NEWS update. Luckily 
nobody uses diff -ly.
[0001-doc-mention-bug-64461-in-NEWS.patch (text/x-patch, attachment)]
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 02 Aug 2023 11:24:04 GMT) Full text and rfc822 format available.
This bug report was last modified 2 years and 38 days ago.

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