* Simon Josefsson <jas@extundo.com> writes:

  > Steve Youngs <steve@youngs.au.com> writes:
  >> `message-hidden-headers'

  > It doesn't seem to work here.  First I fix gnus-posting-styles, and
  > verify that I get OpenPGP: in new messages.  But after adding ^OpenPGP
  > to message-hidden-headers, the header disappears completely, and is
  > not even shown in the SMTP trace buffer of what is actually sent.

  > Is m-h-h broken?

Works here.  I use it to hide my X-Face header while composing.

(setq message-hidden-headers "\\(X-\\)?Face")

(in some groups I also add a Face header)

-- 
|---<Steve Youngs>---------------<GnuPG KeyID: A94B3003>---|
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|             Musa sapientum fixa est in aure.             |
|----------------------------------<steve@youngs.au.com>---|