This file is indexed.

preinst is in tk8.5 8.5.11-1.

This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.

The actual contents of the file can be viewed below.

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#!/bin/sh

set -e

if [ "$1" = "upgrade" ] || [ "$1" = "install" ]; then
    if [ -d /usr/lib/tk8.5/demos ]; then
	# brokenness
	rm -rf /usr/lib/tk8.5/demos
    fi
fi