This file is indexed.

/usr/lib/enca/extconv/cstocs is in enca 1.19-1+b1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#! /bin/sh
# cstocs 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() {
  case "$1" in
  ASCII*) echo ascii ; return ;;
  CP1250*) echo 1250 ; return ;;
  IBM852*) echo pc2 ; return ;;
  ISO-8859-2*) echo il2 ; return ;;
  KEYBCS2*) echo kam ; return ;;
  KOI-8_CS2*) echo koi ; return ;;
  UTF-8*) echo utf8 ; return ;;
  TeX*) echo tex ; return ;;
  esac
  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 "$4" = "-"; then
  if cstocs "$inenc" "$outenc" <"$3"; then
    rm -- "$3"
  else
    echo "$0: cstocs $inenc $outenc failed" 1>&2
    rm -- "$3"
    exit 1
  fi
else
  temp=`/bin/mktemp /tmp/enca-$$-XXXXXXXX` || exit 1
  if cstocs "$inenc" "$outenc" <"$3" >>"$temp"; then
    # use cat > to preserve permissions
    cat $temp >"$3"
  else
    echo "$0: cstocs $inenc $outenc $3 failed, file $3 unchanged" 1>&2
    rm -f $temp
    exit 1
  fi
  rm -f $temp
fi