GNU bug report logs - #11894
24.1.50; [PATCH] diff-apply-hunk can be off by 1 line when the hunk is 0-context pure removal

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From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: 11894 <at> debbugs.gnu.org, Dmitry Gutov <dgutov <at> yandex.ru>
Subject: bug#11894: 24.1.50; [PATCH] diff-apply-hunk can be off by 1 line when the hunk is 0-context pure removal
Date: Thu, 19 Jul 2012 10:40:57 +0200

Stefan Monnier <monnier <at> IRO.UMontreal.CA> writes:

>>> This looks like a bug in those versions of diff (not that I know
>>> a non-buggy version, tho).
>> Maybe, but that's how POSIX wants it:
>
>>     The ending line number of an empty range shall be the number of the
>>     preceding line, or 0 if the range is at the start of the file.
>
> Hmm... but the number we're talking about is the starting-line-number,
> isn't it?

There is no starting-line-number.

    Next, the range of lines in file1 shall be written in the following
    format if the range contains two or more lines:

    "*** %d,%d ****\n", <beginning line number>, <ending line number>

    and the following format otherwise:

    "*** %d ****\n", <ending line number>

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
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