File: postinst

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#! /bin/sh
#                               -*- Mode: Sh -*- 
# postinst --- 
# Author           : Manoj Srivastava ( srivasta@tiamat.datasync.com ) 
# Created On       : Thu Oct 15 00:23:39 1998
# Created On Node  : tiamat.datasync.com
# Last Modified By : Manoj Srivastava
# Last Modified On : Wed Nov 25 11:28:59 1998
# Last Machine Used: tiamat.datasync.com
# Update Count     : 8
# Status           : Unknown, Use with caution!
# HISTORY          : 
# Description      : 
# 
# 


# Abort if any command returns an error value
set -e

# This script is called as the last step of the installation of the
# package.  All the package's files are in place, dpkg has already done
# its automatic conffile handling, and all the packages we depend of
# are already fully installed and configured.

# The following idempotent stuff doesn't generally need protecting
# against being run in the abort-* cases.

# Install info files into the dir file
: install-info --quiet --section "Emacs" "Emacs" \
              --description="The VM Mail Reader User's Manual." \
                 /usr/info/vm.info.gz

# Ensure the menu system is updated
[ ! -x /usr/bin/update-menus ] || /usr/bin/update-menus


case "$1" in
  configure)
    # Configure this package.  If the package must prompt the user for
    # information, do it here.
    :
    if [ -x  /usr/lib/emacsen-common/emacs-package-install ]; then
	/usr/lib/emacsen-common/emacs-package-install vm
    fi
    # There are three sub-cases:
    if test "${2+set}" != set; then
      # We're being installed by an ancient dpkg which doesn't remember
      # which version was most recently configured, or even whether
      # there is a most recently configured version.
      :

    elif test -z "$2" -o "$2" = "<unknown>"; then
      # The package has not ever been configured on this system, or was
      # purged since it was last configured.
      :

    else
      # Version $2 is the most recently configured version of this
      # package.
      :

    fi 
    
    # Take care of older vm-init requirements
    # These are the potential places we could find things in
    SITE_START="/etc/emacs/site-start.el /usr/lib/emacs/site-lisp/site-start.el"

    # The requires line looks like this
    REQUIRE='(load "vm-init.el")'

    # Ok, lets see what we have here
    for i in $SITE_START ; do
	if [ -e $i ]; then
	    if [ "`grep vm-init $i`" != "" ]; then
		SITE_FIX="$SITE_FIX $i"
	    fi
	fi
    done

    # See if we may fix things quietly
    for i in $SITE_FIX ; do
	grep -v "$REQUIRE" $i > /etc/emacs/`basename $i`.new.$$
	mv /etc/emacs/`basename $i`.new.$$ $i || echo Could not edit $i
    done

    # These were the problem files
    SITE_START="$SITE_FIX"
    SITE_FIX=""
    
    # Any mention of vm-init left?
    for i in $SITE_START  ; do
	if [ -e $i ]; then
	    if [ "`grep vm-init $i`" != "" ]; then
		SITE_FIX="$SITE_FIX $i"
	    fi
	fi
    done

    if [ "$SITE_FIX" != "" ]; then
	echo ""
	echo "The following files mention vm-init, even though they shouldnt:"
	echo "  $SITE_FIX "
	echo "please remove the load or require command from these files."
	echo -n "press <return> to proceed:"
	read $input
	echo ""
	exit 0
    fi

    ;;

  abort-upgrade)
    # Back out of an attempt to upgrade this package FROM THIS VERSION
    # to version $2.  Undo the effects of "prerm upgrade $2".
    :

    ;;
  abort-remove)
    if test "$2" != in-favour; then
      echo "$0: undocumented call to \`postinst $*'" 1>&2
      exit 0
    fi
    # Back out of an attempt to remove this package, which was due to
    # a conflict with package $3 (version $4).  Undo the effects of
    # "prerm remove in-favour $3 $4".
    :

    ;;
  abort-deconfigure)
    if test "$2" != in-favour -o "$5" != removing; then
      echo "$0: undocumented call to \`postinst $*'" 1>&2
      exit 0
    fi
    # Back out of an attempt to deconfigure this package, which was
    # due to package $6 (version $7) which we depend on being removed
    # to make way for package $3 (version $4).  Undo the effects of
    # "prerm deconfigure in-favour $3 $4 removing $6 $7".
    :

    ;;
  *) echo "$0: didn't understand being called with \`$1'" 1>&2
     exit 0;;
esac

exit 0