Taken from wcgrep somewhere (apparently here: http://svn.apache.org/viewvc/subversion/trunk/contrib/client-side/wcgrep?revision=877789&view=markup)

wcgrep

#!/bin/bash

# Copyright 2004 Ben Reser <ben@reser.org>
# Licensed under the terms subversion ships under or GPLv2. 

# Useful for greping in a subversion working copy.
# Essentially it behaves the same way your grep command does (in fact it
# ultimately calls the grep command on your path) with a few exceptions.
# Ignores the subversion admin directories (.svn) and vi(m) backup files.
# Recursive is always on with or without -r.
# Always print filename and line numbers.
# Ignores binary files.
# If no path is given the current working directory is searched not stdin.
# Other than that it will take any parameter or pattern your standard grep
# does. 

# This script requires GNU findutils and by default GNU grep (though that
# can be changed with environment variables).
#
# Modifications to the original:
#   - Modified for use on OSX (use gfind found on Macports) and egrep
#   - Added switch to color always
#   - Added .git to the hardcoded ignores
# 
# There are three environment variables you can set that modify the default
# behavior:
#
# WCGREP_GREP      Controls what command is used for the grep command.
#                  If unset or null wcgrep will use the command named grep.
# WCGREP_GREPARGS  Controls what arguments are always passed to the grep
#                  command before the arguments given on the command line.
#                  If unset or null it defaults to -HnI (always print file
#                  names, line numbers and ignore binary files).  If you wish
#                  to set no default args set the variable to a space (" ").
# WCGREP_IGNORE    Controls what files are ignored by the grep command.
#                  This is a regex that is passed to the find command with
#                  -regex so see find's man page for details.  If unset or
#                  null defaults to '.*~$\|.*/\.svn\(/\|$\)', which will
#                  ignore vim backup files and subversion admin dirs.

arg_count=$#
for (( i=1; i <= $arg_count; i++ )); do
    arg="$1"
    shift 1
    if [ -z "$pattern" ]; then
        if [ "$arg" == "--" ]; then
            grepargs="$grepargs $arg"
            pattern="$1"
            shift 1
            ((i++))
        elif [ "${arg:0:1}" != "-" ]; then
            pattern="$arg"
        else
            grepargs="$grepargs $arg"
        fi  
    else
        pathargs="$pathargs $arg"
    fi
done

gfind $pathargs -regex ${WCGREP_IGNORE:-'.*~$\|\.\/\.git\|.*/\.svn\(/\|$\)'} -prune -o \
    -type f -print0 | gxargs -r0 ${WCGREP_GREP:-egrep} ${WCGREP_GREPARGS:--HnI --color=always} \
    $grepargs "$pattern"

Hello breser, spending your time on github searching for wcgrep thieves!? :)

Sorry, I didn't remove anything from the script. I received it second hand from someone at a previous job and I modified it for my purposes and posted it here so it would be lost if I had some disk failure. No foul play intended! I've added back your original copyright and license and added a note about what I changed. Cheers.