Prototype introiff option for find_theorems.
This feature was suggested by Jeremy Avigad / Tobias Nipkow.
It adds an introiff keyword for find_theorems that returns, in
addition to the usual results for intro, any theorems of the
form ([| ... |] ==> (P = Q)) where either P or Q matches the
conclusions of the current goal. Such theorems can be made
introduction rules with [THEN iffDx].
The current patch is for evaluation only. It assumes an
(op = : 'a -> 'a -> bool) operator, which is specific to HOL.
It is not clear how this should be generalised.
#!/usr/bin/env bash
#
# Author: David Aspinall
#
# DESCRIPTION: prepare a session directory for PG-Eclipse
PRG="$(basename "$0")"
function usage()
{
echo
echo "Usage: isabelle $PRG NAME"
echo
echo " Prepare a session directory for PG-Eclipse."
exit 1
}
if [ "$#" -eq 1 ]; then
NAME="$1"; shift
else
usage
fi
"$ISABELLE_TOOL" mkdir -b -q "$NAME"
( cd document; "$ISABELLE_TOOL" latex -o sty; )