This file is indexed.

prerm is in gitweb 1:2.7.4-0ubuntu1.

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

test "$1" = remove || test "$1" = deconfigure || exit 0

# This block does not run if Apache is removed before gitweb.
# In that case there is nothing we can do --- Apache needs to
# take responsibility for undoing what enconf did because
# disconf is not available for use by individual web apps.
if [ -e /usr/share/apache2/apache2-maintscript-helper ]
then
  . /usr/share/apache2/apache2-maintscript-helper
  apache2_invoke disconf gitweb || exit
fi