bug#19261: Recursive grep even when content on stdin

[santiago]

Hi,

I'm forwarding a bug report filed in debian. Is this the expected
behavior? 

/tmp/greptest %  dpkg -l | grep -r grep
wtf:hello grep
/tmp/greptest %  dpkg -l | grep grep   
ii  grep                                                        2.21-1
amd64        GNU grep, egrep and fgrep

grep -r takes the current dir as input instead of stdin.

Regards,

Santiago

----- Forwarded message from address@hidden -----

Date: Tue, 2 Dec 2014 21:38:51 +0200
From: address@hidden
To: address@hidden
Subject: Bug#414168: Recursive grep even when content on stdin
X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.22; amd64-portbld-freebsd9.3)

Hello

Since wheezy (grep 2.12-2) a patch like this has apparently been merged.
I'm not seeing it documented on the man page. (Shouldn't it be?)

This is undesirable for those of us who use shell aliases.

For example, I use
alias grep='grep -rI --exclude-dir=.svn'


Try the following sequence of commands:

mkdir /tmp/greptest
cd /tmp/greptest
echo hello grep > wtf
alias grep='grep -r'
dpkg -l | grep grep


Expected results:
ii  grep    2.12-2   amd64   GNU grep, egrep and fgrep

Actual results:
wtf:hello grep


It seems GREP_OPTIONS is special-cased, and I can move the switches
there as a workaround.


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