[Bug 67642] Thread messages also by subject does not work

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http://bugs.kde.org/show_bug.cgi?id=67642         




------- Additional Comments From matt klassen com  2007-08-02 06:20 -------
Whoops, I put the screenshot in the last comment.

I'm glad to see that this bug/feature request was already asked for.  I completely understand where Till is coming from, we don't want to have a completely lax matching algorithm which contains a lot of false positives for Threading by Subject.  But I think that it is worth noting that it seems to be standard for other applications to thread by subject where it does not match RE: or FW: as a starting string.  In particular Thunderbird works like this.

One thing that Till does bring up is that we don't want to match two threads that have the same subject but are actually different.  But one flaw that I see with Till's argument is that his implimentation won't work in these cases anyway.  For example, if we had four emails like this, the RE's would most likely be matched wrong anyway:
Subject: A
Subject: RE: A
Subject: A
Subject: RE: A

I think that it be fair to note, that if anyone is running the "Threading by Subject" they would be aware that false positives are possible.  

At anyrate, have a quick look at the screenshot that I sent in and see how our groupware sends out messages: 
"[EW subscription] Followup on <site> Slip 22322"
So when we get 50+ emails a day with slips spreading over weeks, it become difficult to follow what happens. 

Matt