:0
* ! DEST ?? .
* ! TICKLE_DELIVERED ?? .
* ORIGINAL_TO ?? ^.+@tickle\.madduck\.net$
* ORIGINAL_TO ?? ^\/[^@]+
{
  DAILY_DELIVERY_TIME=04:20
  JUST_DATE="`$BIN_DATE -d \"$DATE\" +%x`"

  :0
  * MATCH ?? ^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$
  { DELAY="@$MATCH" }

  :0 E
  * MATCH ?? ^[0-9]+h$
  * MATCH ?? ^\/[^h]+
  { DELAY="$DATE + $MATCH hours" }

  :0 E
  * MATCH ?? ^[0-9]+m$
  * MATCH ?? ^\/[^m]+
  { DELAY="$JUST_DATE + $MATCH months $DAILY_DELIVERY_TIME" }

  :0 E
  * MATCH ?? ^[0-9]+w$
  * MATCH ?? ^\/[^w]+
  { DELAY="$JUST_DATE + $MATCH weeks $DAILY_DELIVERY_TIME" }

  :0 E
  * MATCH ?? ^[0-9]+d?$
  * MATCH ?? ^\/[^d]+
  { DELAY="$JUST_DATE + $MATCH days $DAILY_DELIVERY_TIME" }

  JUST_DATE
  DAILY_DELIVERY_TIME

  :0 E
  {
    LOG="tickle:      invalid date string: $MATCH$NL"
    EXITCODE=69
    HOST
  }

  :0 fw
  |$FORMAIL -i "X-Tickle: $DELAY"

  LOG="tickle:      delaying message until $DELAY$NL"

  # unset DISABLE_DELAYS to enable delaying for tickle messages
  DISABLE_DELAYS
}

# vim:ft=procmail