mgrep

#!/bin/bash
# Multiple grep. Like an OR of each of the individual expressions.
# Options (some of them affect grep, others affect h):
#  -nc     No color
#  -n      Invert colors
#  -A n    Print n lines after every match
#  -B n    Print n lines before every match

HIGHLIGHT=1
GREP_OPTS=() # Empty array

while true
do
 case "$1" in
 -nc)
  HIGHLIGHT=0
  shift
  ;;
 -[AB])
  GREP_OPTS+="$1"
  GREP_OPTS+="$2"
  shift
  shift
  ;;
 *)
  break;
  ;;
 esac
done

EXPR=""
for x in "$@"
do
 EXPR="${EXPR}|(${x})"
done

# Omit the first character ("|")
EXPR="${EXPR:1}"

if [ ${HIGHLIGHT} == 1 ]
then
 egrep -i "${EXPR}" "${GREP_OPTS[@]}" | h -i "$@"
else
 egrep -i "${EXPR}" "${GREP_OPTS[@]}"
fi