Date: Sun, 20 Mar 2005 22:21:24 GMT From: martinko <gamato@pobox.sk> To: freebsd-gnats-submit@FreeBSD.org Subject: bin/79063: grep(1) - strange behaviour (most likely a bug) -- `grep -i --colour ""` Message-ID: <200503202221.j2KMLOqM088090@www.freebsd.org> Resent-Message-ID: <200503202230.j2KMU2rS067211@freefall.freebsd.org>
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>Number: 79063
>Category: bin
>Synopsis: grep(1) - strange behaviour (most likely a bug) -- `grep -i --colour ""`
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 20 22:30:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: martinko
>Release: 5.3R-p5
>Organization:
>Environment:
FreeBSD mb-aw1n-bsd 5.3-RELEASE-p5 FreeBSD 5.3-RELEASE-p5 #5: Mon Feb 14 19:45:04 CET 2005 root@mb-aw1n-bsd:/usr/obj/usr/src/sys/MB-AW1N i386
>Description:
`grep -i --colour ""` runs mad and seems to generate ansi escape codes in a (infinite?) loop. it happens only when using empty ("") search string and both parameters (-i and --colour) are used.
pls find my orginal description below as posted to freebsd-questions mailing list. i also produced a typescript with script(1) which you may find under the 2nd link/post.
http://lists.freebsd.org/pipermail/freebsd-questions/2005-March/081083.html
http://lists.freebsd.org/pipermail/freebsd-questions/2005-March/081202.html
>How-To-Repeat:
just run the following:
grep -i --colour ""
as soon as you type the first letter it gets mad and soon you'll have a huge typescript file as you can see in the link above.
codes/chars generated (as output on screen) seem to be random but i'm not sure about it.
>Fix:
sorry, i've no idea. but if you need my assistence just let me know pls.
>Release-Note:
>Audit-Trail:
>Unformatted:
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