This file is indexed.

postinst is in rail 1.2.11-4.

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
PACKAGE=rail

if [ ! -e /var/lib/emacsen-common/state/package/installed/emacsen-common ]
then
    # Fallback to emacsen-common 1.x
    if [ "$1" = "configure" ] && [ -x /usr/lib/emacsen-common/emacs-package-install ]
    then
        /usr/lib/emacsen-common/emacs-package-install $PACKAGE
    fi
else
    mkdir -p -m 0755 /var/lib/emacsen-common/state/package/installed
    touch /var/lib/emacsen-common/state/package/installed/$PACKAGE
# Automatically added by dh_installemacsen/11.1.3ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -e /var/lib/emacsen-common/state/package/installed/emacsen-common -a -x /usr/lib/emacsen-common/emacs-package-install ] ; then
		/usr/lib/emacsen-common/emacs-package-install --postinst rail
	fi
fi
# End automatically added section

fi