diff -r 26861a913d6b -r 5ec1d01089e3 lib/Tools/update_sub_sup
--- a/lib/Tools/update_sub_sup	Sun Feb 28 15:19:30 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,36 +0,0 @@
-#!/usr/bin/env bash
-#
-# Author: Makarius
-#
-# DESCRIPTION: update Isabelle symbols involving sub/superscripts
-
-
-## diagnostics
-
-PRG="$(basename "$0")"
-
-function usage()
-{
-  echo
-  echo "Usage: isabelle $PRG [FILES|DIRS...]"
-  echo
-  echo "  Recursively find .thy/.ML files and update Isabelle symbols involving"
-  echo "  sub- and superscript."
-  echo
-  echo "  Old versions of files are preserved by appending \"~~\"."
-  echo
-  exit 1
-}
-
-
-## process command line
-
-[ "$#" -eq 0 -o "$1" = "-?" ] && usage
-
-SPECS="$@"; shift "$#"
-
-
-## main
-
-find $SPECS \( -name \*.ML -o -name \*.thy \) -print0 | \
-  xargs -0 "$ISABELLE_HOME/lib/scripts/update_sub_sup"