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bug#16586: bug#17245: GREP BUG: grep -P and binary files
From: |
Jim Meyering |
Subject: |
bug#16586: bug#17245: GREP BUG: grep -P and binary files |
Date: |
Thu, 24 Apr 2014 08:29:07 -0700 |
On Wed, Apr 23, 2014 at 10:39 PM, Paul Eggert <address@hidden> wrote:
> Jim Meyering wrote:
>>
>> anyone using grep -P to search data that is even a tiny bit
>> inconsistent with their UTF-8 locale will now get an exit status of
>> 2 rather than the matches they used to get.
>
>
> Yes, I don't like that either, but <http://bugs.exim.org/1468> says libpcre
Oh! I had not read that. That is disappointing.
> intends to have undefined behavior here. If so, it wouldn't help to wait
> until the next libprce release, which may well have a serious bug of this
> form in a different area, a bug that's not easy to test for.
Indeed.
> Perhaps somebody should modify grep -P to discard input lines containing
> non-UTF-8 data instead of presenting them to libprce. That way, it would be
> safe for grep -P to use PCRE_NO_UTF8_CHECK. Although grep -P should report
> an error and exit with status 2 if it discards input due to encoding errors,
> it can also report matches in lines that do not contain encoding errors, so
> that users can see both the error messages and the matches.
That sounds reasonable, but I don't like the requirement that
one make two passes over each subject text.
- bug#17245: GREP BUG: grep -P and binary files, (continued)
- bug#17245: GREP BUG: grep -P and binary files, Jim Meyering, 2014/04/13
- bug#17245: GREP BUG: grep -P and binary files, Jim Meyering, 2014/04/13
- bug#17245: GREP BUG: grep -P and binary files, Norihiro Tanaka, 2014/04/15
- bug#17245: GREP BUG: grep -P and binary files, Paul Eggert, 2014/04/15
- bug#17245: GREP BUG: grep -P and binary files, Jim Meyering, 2014/04/15
- bug#17245: GREP BUG: grep -P and binary files, Norihiro Tanaka, 2014/04/16
- bug#16586: bug#17245: GREP BUG: grep -P and binary files, Paul Eggert, 2014/04/21
- bug#17245: GREP BUG: grep -P and binary files, Norihiro Tanaka, 2014/04/21
- bug#16586: bug#17245: GREP BUG: grep -P and binary files, Jim Meyering, 2014/04/23
- bug#16586: bug#17245: GREP BUG: grep -P and binary files, Paul Eggert, 2014/04/24
- bug#16586: bug#17245: GREP BUG: grep -P and binary files,
Jim Meyering <=