#!/usr/bin/env bash
#
# Author: Makarius
#
# DESCRIPTION: expand old Isar command conflations 'hence' and 'thus'
## diagnostics
PRG="$(basename "$0")"
function usage()
{
echo
echo "Usage: isabelle $PRG [FILES|DIRS...]"
echo
echo " Recursively find .thy files and expand old Isar command conflations:"
echo
echo " hence ~> then have"
echo " thus ~> then show"
echo
echo " Old versions of files are preserved by appending \"~~\"."
echo
exit 1
}
## process command line
[ "$#" -eq 0 -o "$1" = "-?" ] && usage
SPECS="$@"; shift "$#"
## main
find $SPECS -name \*.thy -print0 | \
xargs -0 "$ISABELLE_TOOL" java isabelle.Update_Then