more robust: avoid race condition wrt. cleanup of ML process, e.g. relevant for "$ISABELLE_TMP/rat.ML" in theory Codegen.Further;
#!/usr/bin/env bash
set -e
FORMAT="$1"
VARIANT="$2"
isabelle logo HOL
isabelle latex -o "$FORMAT"
isabelle latex -o bbl
./isa-index root
isabelle latex -o "$FORMAT"
[ -f root.out ] && "$ISABELLE_HOME/src/Doc/fixbookmarks" root.out
isabelle latex -o "$FORMAT"