Bug 179698

Summary:

grep -w broken in multibyte locales

Product:

[Fedora] Fedora

Reporter:

Tim Robbins <tim>

Component:

grep

Assignee:

Tim Waugh <twaugh>

Status:

CLOSED RAWHIDE

QA Contact:

Mike McLean <mikem>

Severity:

medium

Docs Contact:

Priority:

medium

Version:

Target Milestone:

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Target Release:

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Hardware:

i386

OS:

Linux

Whiteboard:

Fixed In Version:

2.5.1-53

Doc Type:

Bug Fix

Doc Text:

Story Points:

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Clone Of:

Clones:

574350 (view as bug list)

Environment:

Last Closed:

2006-02-20 14:51:45 UTC

Type:

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Regression:

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Mount Type:

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Documentation:

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CRM:

Verified Versions:

Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Bug Depends On:

Bug Blocks:

574350

Attachments:

Description	Flags
Potential fix for grep -w problem	none

Description Tim Robbins 2006-02-02 04:53:43 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/417.9 (KHTML, like Gecko) Safari/417.8

Description of problem:
grep -w appears not to work for any non-UTF-8 multibyte locale; matches are often not reported when 
they should be.

Version-Release number of selected component (if applicable):
grep-2.5.1-48.2

How reproducible:
Always

Steps to Reproduce:
echo za a | LANG=ja_JP.eucjp grep -w a

Actual Results:  No output.

Expected Results:  Output: "za a".

Additional info:

The command gives the expected output on FC3.

Comment 1 Tim Waugh 2006-02-03 17:26:02 UTC

Thanks for the report.

Corrections:

* this is for non-UTF-8 multibyte locales.  UTF-8 input works correctly.
* FC-3 gives the same output for me (grep-2.5.1-31.4).

Comment 2 Tim Robbins 2006-02-19 22:52:40 UTC

Created attachment 124869 [details]
Potential fix for grep -w problem

This is a potential fix for the grep -w problem in non-UTF-8 multibyte locales.
It attempts to correctly locate the multibyte character preceeding the matched
string by (slowly) scanning forward from the start of the buffer until it
reaches the match position. Using "last_char" instead of performing this search
seems to be incorrect.

Comment 3 Tim Waugh 2006-02-20 14:51:45 UTC

Thanks!  Fixed in grep-2.5.1-53.