---- Reported by jim@yorba.org 2012-04-20 16:57:00 -0700 ----

Original Redmine bug id: 5096
Original URL: http://redmine.yorba.org/issues/5096
Searchable id: yorba-bug-5096
Original author: Jim Nelson
Original description:

Today we're parsing conversations purely on Message-IDs. We could use a little
more intelligence. For example, pool messages with the same subject (stripped
of Re: and Fwd:) from the same person. Gmail does this today.

Related issues:
related to geary - 6645: Conversation content is not shown when the
converstation ... (Invalid)
related to geary - Bite-sized #7211: Recognise "R:" as a valid reply prefix (Open)
related to geary - 7350: Message not included in conversation (Open)



---- Additional Comments From geary-maint@gnome.bugs 2013-03-26 11:38:00 -0700 ----

### History

####

#1

Updated by Adam Dingle over 1 year ago

I also see that Geary sometimes fails to thread related messages together into
a single conversation. For example, I'm currently subscribed to the GNOME
desktop-devel-list mailing list. Here are its messages from May:

http://mail.gnome.org/archives/desktop-devel-list/2012-May/thread.html

For the threads "3.6 Feature: Lock Screen" and "3.6 Feature: IBus/XKB
integration", Geary groups messages into several conversations, but Gmail is
smart enough to display only one conversation for each. Note that the mailing
list archive shows a marker "<Possible follow-ups>", indicating that it's not
100% sure that the messages are related. But they are related, and Gmail gets
this right.

I think this might not be as simple as pooling messages with the same subject
from the same person. For example, send yourself two independent messages in
succession entitled "Re: foo". Google displays them as separate conversations,
correctly.

####

#2

Updated by Adam Dingle over 1 year ago

  * **Target version** set to _0.2_

####

#3

Updated by Adam Dingle over 1 year ago

  * **Subject** changed from _Better conversation parsing_ to _Geary sometimes fails to group related messages into a single conversation_

####

#4

Updated by Jim Nelson over 1 year ago

  * **Category** set to _engine_

Perhaps. But when I send to my Yorba account two messages titled "Re: xyzzy"
(and "Fwd: Foo") from my personal account, they are presented as a
conversation.

####

#5

Updated by Jim Nelson over 1 year ago

One more data point: I'm subscribed to the desktop-devel-list as well, and my
iPhone's Mail app pools those threads exactly the same way as Geary does.

####

#6

Updated by Adam Dingle about 1 year ago

  * **Target version** deleted (<strike>_0.2_</strike>)

####

#7

Updated by Tiago Quelhas 11 months ago

JWZ's algorithm [1] is worth taking a look for this, as it is the _de facto_
message threading algorithm for MUAs. It threads primarily based on References
/In-Reply-To headers, but also includes a fallback heuristic based on subject
lines. Obviously, Geary doesn't really need to know the nesting order of
messages within a conversation, so the full algorithm isn't required; but we
could use the part concerned with identifying which messages belong to the
same conversation.

[1] http://www.jwz.org/doc/threading.html

####

#8

Updated by Jim Nelson 8 months ago

  * **Category** changed from _engine_ to _conversations_



--- Bug imported by chaz@yorba.org 2013-11-21 20:20 UTC  ---

This bug was previously known as _bug_ 5096 at http://redmine.yorba.org/show_bug.cgi?id=5096

Unknown version " in product geary. 
   Setting version to "!unspecified".
Unknown milestone "unknown in product geary. 
   Setting to default milestone for this product, "---".
Setting qa contact to the default for this product.
   This bug either had no qa contact or an invalid one.
Resolution set on an open status.
   Dropping resolution