Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> Turbo Fredriksson <turbo@tripnet.se> writes:
> 
> > There was a very nice way (variable) to do this, and many other
> > things in 0.84 (which I'm using) which was called
> > 'gnus-posting-style-alist'.
> 
> The posting styles used to work by setting variables locally in the
> Message buffer.  This mechanism made it quite breakable and somewhat
> unpredictable.  The new mechanism sets no variables, but inserts (or
> arranges for insertions) directly into the buffer, thereby letting
> people see what the posting style has arranged.

Lars,

I've been trying to figure out a "good" way to set the envelope header 
to the right value when setting a different address via
posting-styles.  Since posting styles only changes content in the
buffer and sets no variables I'm struggling with the right way to get
this to work...

Currently, I'm using the patch below.  *Don't* apply it since it is
using a hack to set user-mail-address.  What would be appropriate in
gnus-msg.el?  I assume what is in message.el is ok (at least it seems
to be for me)...

I tried making user-mail-address a local var, but by the time we got
to actually sending the message we're out of the message buffer and
into another, so a local var just doesn't work.