For those messages, compute a synthetic Message-ID based on the SHA1
of the whole message, in the same way that notmuch would do. See:
http://git.notmuchmail.org/git/notmuch/blob/HEAD:/lib/sha1.c
To do the above, rewrite get_message_id() to accumulate header lines,
parse them to check for Message-ID, and fallback to SHA1 computation
if it is not present.
Thanks to:
- Jan N. Klug for preliminary versions of this patch
- Tomi Ollila for suggesting an elegant implementation
Change notmuch-mutt to use the new --duplicate=1 flag for duplicate
removal. This will remove duplicates based on message-id at the
notmuch level. Previously we were using fdupes or generating sha sums
after the search.
This version will be faster, but will enable the possibility of hiding
search results due to accidental/malicious duplicate message-ids.
