#!/bin/sh

# Translate argument list to individual function calls with one argument.
trap_with_arg() {
    func="$1"
    shift
    for sig; do
        trap "$func $sig" "$sig"
    done
}

# register signal handlers with the custom trap_with_arg function.
# translates to:
#   trap _trap HUP
#   trap _trap INT
#   ...
trap_with_arg _trap HUP INT WINCH QUIT TERM INFO USR1 USR2

# the trap function get's the signal as argument now
_trap() {
    echo "Caught signal: $1"
    case $1 in
        INT) exit 1 ;;
       QUIT) exit 0 ;;
      WINCH) echo "Resize: $(tput cols)x$(tput lines)" ;;
    esac
}

# main program... just waiting.
while true
do 
    sleep 0.1
done