Fully threaded comment tracking emails using more than two References: headers

[airynothing]

Title:
Fully threaded comment tracking emails using more than two References: headers

Area:
comment tracking emails

Summary:
Fully threaded mailreaders use the References: header in the email to build the tree structure of emails, expecting to find *all* direct ancestor messages' message-ids in the header. Currently comment notification emails only include up to two message-ids in the References: header -- one for the post, one for the top comment in the thread -- preventing the actual tree structure from being built by the mailreader. If all available parent-comment-of-parent-comment message IDs are included, a correct tree structure will be available in the mailreader.

Description:
I tracked a large comment meme and sent it to a fully threaded mailreader, only to find that the tree structure of the comments was not preserved. Threaded mailreaders use the References: header to build the tree, and all direct ancestor comments of the comment in question should be included. Currently in the email the only message-ids included in the References: header are for the post and the top-level comment. Result in the mailreader: chaos (due to the large size of the comment threads). Solution: include more references (all parent and parent-of-parent comments) in the References: header.

Poll #18022 Fully threaded comment tracking emails using more than two References: headers

Open to: Registered Users, detailed results viewable to: All, participants: 31

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Should be implemented as-is.
10 (32.3%)

Should be implemented with changes. (please comment)
0 (0.0%)

Shouldn't be implemented.
0 (0.0%)

(I have no opinion)
20 (64.5%)

(Other: please comment)
1 (3.2%)