Heya, here is a patchset originating from a feature contributed by Kevin J. McCarthy: duplicate message removal for notmuch-mutt searches. I've reviewed the main patch and gone through various iterations of it with Kevin. I consider it suitable for application in its present form, and I've added a subsequent patch to fix the Debian packaging accordingly. Can someone with commit access be so kind of applying this patchset to the master branch? Also, if you've further comments on the patch, do not hesitate!