/usr/lib/enca/extconv/umap is in enca 1.18-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38  | #! /bin/sh
# umap batch-call wrapper.
# To be called by enca, don't use directly. See enca(1) for calling convention.
#
# Copyright (C) 2000-2003 David Necas (Yeti) <yeti@physics.muni.cz>.
# This is free software; it can be copied and/or modified under the terms of
# version 2 of GNU General Public License, see COPYING for details.  There is
# NO WARRANTY; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
transform_enc_name() {
  echo "$1" | sed -e 's:/.*::'
}
if test "x$3" = "x"; then
  echo "$0 has to be called by enca" 1>&2
  exit 1
fi
umask 077
inenc=`transform_enc_name "$1"`
outenc=`transform_enc_name "$2"`
if test "$4" = "-"; then
  if umap "$inenc:$outenc" <"$3"; then
    rm -- "$3"
  else
    echo "$0: umap $inenc:$outenc failed" 1>&2
    rm -- "$3"
    exit 1
  fi
else
  temp=`/bin/mktemp /tmp/enca-$$-XXXXXXXX` || exit 1
  if umap "$inenc:$outenc" <"$3" >"$temp"; then
    # use cat > to preserve permissions
    cat $temp >"$3"
  else
    echo "$0: umap $inenc:$outenc <$3 failed, file $3 unchanged" 1>&2
    rm -f $temp
    exit 1
  fi
  rm -f $temp
fi
 |