lib/scripts/fileident

added parallel_proofs flag (default true, cf. usedir option -Q), which can be disabled in low-memory situations;

#!/usr/bin/env bash
#
# fileident --- produce file identification based

FILE="$1"

if [ -n "$ISABELLE_FILE_IDENT" -a -f "$FILE" -a -r "$FILE" ]
then
  ID=$(cat "$FILE" | $ISABELLE_FILE_IDENT | cut -d " " -f 1) && echo -n "$ID"
fi