#!/bin/bash
#
# $Id: Isabelle,v 1.15 1999/10/20 16:58:15 wenzelm Exp $
#
# Isabelle interface startup script.


## settings

PRG=$(basename $0)

ISABELLE_HOME=$(dirname $0)/..
. $ISABELLE_HOME/lib/scripts/getsettings || \
  { echo "$PRG probably not called from its original place!"; exit 2; }


## diagnostics

function fail()
{
  echo "$1" >&2
  exit 2
}


## main

case "$ISABELLE_INTERFACE" in
  none)
    INTERFACE=$ISABELLE
    ;;
  */*)
    INTERFACE="$ISABELLE_INTERFACE"
    ;;
  *)
    INTERFACE="$ISABELLE_HOME/lib/scripts/isa-$ISABELLE_INTERFACE"
    ;;
esac

[ ! -x "$INTERFACE" ] && fail "Bad Isabelle interface: \"$ISABELLE_INTERFACE\""

exec $INTERFACE "$@"
