#!/bin/sh
#
# $Id$
#

config_functions=1

if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
    ac_n= ac_c='
' ac_t='        '
  else
    ac_n=-n ac_c= ac_t=
  fi
else
  ac_n= ac_c='\c' ac_t=
fi

echon ()
{
  echo $ac_n "$*"$ac_c
}

merge_lists ()
{
  res="$1"
  for arg1 in $2; do
    match=no
    for arg2 in $1; do
      if [ "$arg1" = "$arg2" ]; then
        match=yes
      fi
    done
    if [ "$match" = "no" ]; then res="$res $arg1"; fi
  done
  echo $res
}

absolute_path ()
{
  case "$1" in
    /*) dir="$1";;
    *) dir="`pwd`/$1";;
  esac
  while [ "$tmp_dir" != "$dir" ]; do
    tmp_dir="$dir"
    dir="`echo $dir | sed 's@/\.\?/@/@g'`"
  done
  case "$dir" in
    */) ;;
    *) dir="$dir/";;
  esac
  tmp_dir=""
  while [ "$tmp_dir" != "$dir" ]; do
    tmp_dir="$dir"
    dir="`echo $dir | sed 's@\(.*\)/\([^/]*[^./][^/]*\|[^/]\{3,\}\)/\.\./\(.*\)@\1/\3@'`"
  done
  echo "$dir"
}