Hannu Hartikainen venit, vidit, dixit 2021-06-23 12:29:06:
> When using notmuch-reply and guessing the From: address from
> Delivered-To headers, I had the wrong address chosen today. This was
> because the messages from the notmuch list contain these headers in this
> order:
> 
> Delivered-To: hannu.hartikainen@gmail.com
> ...
> Delivered-To: hannu@hrtk.in
> 
> In my .notmuch-config I have the following configuration:
> 
> primary_email=hannu@hrtk.in
> other_email=hannu.hartikainen@gmail.com;...
> 
> Before this change, notmuch-reply would guess From: @gmail.com because
> that is the first Delivered-To header present. After the change, the
> primary address is chosen as I would expect.
> ---
>  lib/message-file.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/lib/message-file.c b/lib/message-file.c
> index 647ccf3a..7e8ea09c 100644
> --- a/lib/message-file.c
> +++ b/lib/message-file.c
> @@ -291,11 +291,15 @@ _notmuch_message_file_get_header (notmuch_message_file_t *message,
>      if (value)
>         return value;
>  
> -    if (strcasecmp (header, "received") == 0) {
> +    if (strcasecmp (header, "received") == 0 ||
> +            strcasecmp (header, "delivered-to") == 0) {
>         /*
> -        * The Received: header is special. We concatenate all
> -        * instances of the header as we use this when analyzing the
> -        * path the mail has taken from sender to recipient.
> +        * The Received: header is special. We concatenate all instances of the
> +        * header as we use this when analyzing the path the mail has taken
> +        * from sender to recipient.
> +        *
> +        * Similarly, multiple instances of Delivered-To may be present. We
> +        * concatenate them so the one with highest priority may be picked.
>          */
>         decoded = _notmuch_message_file_get_combined_header (message, header);
>      } else {
> -- 
> 2.32.0

Without looking at the surrounding code I'm wondering:

Is an address from a received header (still) preferred over one from a
delivered-to, or does the order of headers in the mail envelope play a
role?

Michael
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