/usr/share/doc/dialog/examples/editbox-utf8 is in dialog 1.1-20120215-2.
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 | #!/bin/sh
# $Id: editbox-utf8,v 1.9 2010/01/13 10:20:03 tom Exp $
. ./setup-vars
. ./setup-tempfile
. ./setup-utf8
. ./setup-edit
cat << EOF > $input
Hi, this is a edit box. You can use this to
allow the user to enter or modify free-form text.
Try it now!
----------- --------------------------------
Choose Description of the OS you like
----------- --------------------------------
Ｌｉｎｕｘ The Great Unix Clone for 386/486
ＮｅｔＢＳＤ Another free Unix Clone for 386/486
ＯＳ/２ IBM OS/2
ＷＩＮ ＮＴ Microsoft Windows NT
ＰＣＤＯＳ IBM PC DOS
ＭＳＤＯＳ Microsoft DOS
----------- --------------------------------
----------- --------------------------------
EOF
$DIALOG --title "EDIT BOX" \
--fixed-font "$@" --editbox $input 0 0 2>$output
retval=$?
. ./report-edit
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