postinst is in fontconfig-config 2.8.0-3ubuntu9.
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.
| 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 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | #!/bin/sh
set -e
rm_conffile() {
    PKGNAME="$1"
    CONFFILE="$2"
    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE '{s/ obsolete$//;s/.* //p}\"`"
        if [ "$md5sum" != "$old_md5sum" ]; then
            echo "Obsolete conffile $CONFFILE has been modified by you."
            echo "Saving as $CONFFILE.dpkg-bak ..."
            mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
        else
            echo "Removing obsolete conffile $CONFFILE ..."
            rm -f "$CONFFILE"
        fi
    fi
}
# Remove old ucf stuff
rm -rf /var/lib/fontconfig
CONFAVAIL=/etc/fonts/conf.avail
CONFDIR=/etc/fonts/conf.d
# Remove old defoma stuff
if [ -x "`which defoma-app 2>/dev/null`" ]; then
    defoma-app purge fontconfig >/dev/null || true
fi
DEFOMA=/var/lib/defoma/fontconfig.d/
if [ -d $DEFOMA ]; then
    rm -f $DEFOMA/fonts.conf
    rmdir $DEFOMA
fi
rm -f /etc/defoma/fontconfig.subst-rule
unhinted="10-unhinted.conf"
autohint="10-autohint.conf"
# (mathieu-tl): purge the debconf database from our stuff, since we opted not
#               to use debconf for fontconfig after all
if dpkg --compare-versions "$2" lt "2.8.0-2ubuntu1~"; then
  . /usr/share/debconf/confmodule
  db_purge
fi
# (asac): cleanup old conf.d links transition - remove ancient left-over confs
if dpkg --compare-versions "$2" lt "2.6.0-1ubuntu11~"; then
  lp332992_ancient_conf_leftover="autohint.conf no-bitmaps.conf no-sub-pixel.conf sub-pixel.conf unhinted.conf yes-bitmaps.conf"
  for f in $lp332992_ancient_conf_leftover; do
    if [ -h $CONFDIR/$f ]; then
	rm $CONFDIR/$f
    fi
    if [ -e $CONFDIR/$f ]; then
	rm_conffile fontconfig-config $CONFDIR/$f
    fi
  done
fi
 
# (asac): drop debconf transition - remove old hinting confs
if dpkg --compare-versions "$2" lt "2.6.0-1ubuntu12~"; then
  if [ -h $CONFDIR/$unhinted ]; then
	rm $CONFDIR/$unhinted
  fi
  if [ -h $CONFDIR/$autohint ]; then
	rm $CONFDIR/$autohint
  fi
fi
	
subpixel="10-sub-pixel-rgb.conf"
no_subpixel="10-no-sub-pixel.conf"
# (asac): drop debconf transition - remove old subpixel configs once
if dpkg --compare-versions "$2" lt "2.6.0-1ubuntu12~"; then
  if [ -h $CONFDIR/$subpixel ]; then
	rm $CONFDIR/$subpixel
  fi
  if [ -h $CONFDIR/$no_subpixel ]; then
	rm $CONFDIR/$no_subpixel
  fi
fi
yes_bitmaps="70-yes-bitmaps.conf"
#no_bitmaps="70-no-bitmaps.conf"
# (asac): drop debconf transition - remove old bitmap confs
if dpkg --compare-versions "$2" lt "2.6.0-1ubuntu12~"; then
  if [ -h $CONFDIR/$yes_bitmaps ]; then
	rm $CONFDIR/$yes_bitmaps
  fi
#  if [ -h $CONFDIR/$no_bitmaps ]; then
#	rm $CONFDIR/$no_bitmaps
#  fi
fi
# Create /usr/local/share/fonts
LOCALDIR=/usr/local/share/fonts
if [ ! -d $LOCALDIR ]; then
  if mkdir $LOCALDIR 2>/dev/null ; then
    chmod 2775 $LOCALDIR
    chown root:staff $LOCALDIR
  fi
fi
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