Re: hook run just in message-mode just before user begins composing/replying?

[Tim Landscheidt]

Gregor Zattler <telegraph@gmx.net> wrote:

> I wrote two functions which, manually called in a
> buffer just set up by message-mode for me to start
> typing my message/reply, manipulate the headers of said
> message.

> ATM I call them in message-send-hook but then I do not
> see the result of the manipulations and sometimes I would
> like to adjust headers after these functions run.

> I did not find a hook for this purpose.  I experimented
> with message-signature-setup-hook but then one function
> mangles the headers, the other function does nothing,
> indicating that the headers are not setup or not
> accessible as at the moment the user (I) starts to
> type.

> Any ideas how to solve this puzzle?

There are also (in Emacs 28.2) message-header-setup-hook and
message-setup-hook that look promising.  Do they work for
you?

Tim