send-hook and my_hdr oddities

[Aron Griffis <agriffis@xxxxxxxxxx>]

Hello,

I have the following in my .muttrc (among other things, of course):

  send-hook .            unmy_hdr Bcc
  send-hook "~C hp.com"  my_hdr Bcc: Aron Griffis <my_hp_address>

I see the strangest behavior...

  1. Hit m to write a new message to somebody@xxxxxxx
     However the Bcc isn't set!

  2. Repeat #1, this time the Bcc is set to Aron Griffis <my_hp_address>

  3. Write a message elsewhere (non-hp), Bcc remains set to 
     Aron Griffis <my_hp_address>

  4. Repeat #3, this time the Bcc is unset.

It seems that the send-hook is somehow trailing the message creation and
applying to the next message instead of the current one.  Ideas?  I'm
running mutt-1.5.6

Thanks,
Aron