post_install() {
  gtk-update-icon-cache -q -t -f /usr/share/icons/hicolor
  update-mime-database /usr/share/mime
  update-desktop-database -q
  for sz in 16 24 32 36 48 64 96 128 192 256
  do
    xdg-icon-resource install --size $sz --context mimetypes \
    /usr/share/icons/hicolor/${sz}x${sz}/mimetypes/application-x-memsource-editor.png \
    application-x-memsource-editor
  done
  xdg-mime install /usr/share/mime/application/x-memsource-editor.xml
}

post_remove() {
  post_install
  for sz in 16 24 32 36 48 64 96 128 192 256
  do
    xdg-icon-resource uninstall --size $sz --context mimetypes application-x-memsource-editor
  done
  xdg-mime uninstall /usr/share/mime/application/x-memsource-editor.xml
}