[LLVMbugs] [Bug 23880] New: Phabricator sometimes likes to send duplicate messages

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23880

            Bug ID: 23880
           Summary: Phabricator sometimes likes to send duplicate messages
           Product: Website
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Phabricator
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-bugs at justinbogner.com
                CC: klimek at google.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Every so often two almost identical mails show up on a phabricator thread. It
looked to me like this happens when somebody top-posts in an email reply to a
phabricator thread - one mail goes to the list from the email author, another
from phab. If this is what's happening, we should teach phab not to send the
mail if the destination is already in the recipients list.

When I was looking at an example of this happening though, it looks like it
might be more complicated than that. Consider these two mails:

 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150615/281960.html
 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150615/281961.html

They're identical, except the former is missing the part with inline replies.
You'd think my explanation above was correct: the latter was from Chandler to
the list, and the former from phab. This theory gets a bit muddier though,
because both of these emails have the following headers:

  X-Phabricator-Sent-This-Message: Yes
  X-Phabricator-Mail-Tags: <differential-comment>

So I guess *both* came from phabricator? That's weird.

In any case, I'd really like to only receive the version with the full content,
and not the one that repeats the start of the content.

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