Subject: Re: bug#46029: 27.1; mail-archive-file-name cannot be changed once it is set.

From: Eli Zaretskii <[email-masked]>
Date: Fri, 22 Jan 2021 09:59:21 +0200

> Date: Fri, 22 Jan 2021 09:42:25 +0200
> From: Eli Zaretskii <[email-masked]>
> Cc: [email-masked]
> 
> Are you using message-mode (as opposed to mail-mode) to compose your
> email messages?  If so, I think you need to change the value of
> message-default-mail-headers when you switch accounts.  message-mode
> picks up the values of mail-archive-file-name and mail-default-headers
> when it starts up, and computes from them the value of
> message-default-mail-headers, which it uses thereafter.

I've now added this nit to the respective doc strings.