I just committed a bug fix for the missing final newline from "notmuch search --output=tags". I don't recall who reported the bug, but thanks! Michal, in trying to add a test for that bug, I found that the current test suite infrastructure can't catch it because the shell's $() construct doesn't distinguish whether that final newline is present or not. I don't see an easy way to fix this, (other than making all tests put results into files and making test_expect_equal accept those filenames). Do you see any easy fix? Meanwhile, while adding the --output= test, I noticed some inconsistency in the output: $ notmuch search --output=threads ... | head -1 thread:0000000000000c3c $ notmuch search --output=messages ... | head -1 id:1272355278.3878.111.camel@thor.local $ notmuch search --output=files ... | head -1 /path/to/maildir/1272355352.M909256P19063V18F0_0,S=9415 $ notmuch search --output=tags ... | head -1 attachment The inconsistency is the presence of the "thread:" and "id:" prefixes in the first two cases, (note that there isn't any "tag:" prefix in the last case). I can't find any good justification for these. I think the right answer is to drop those prefixes in the output. Does anybody disagree? Does anyone have any scripts that are already consuming the output of "notmuch search --output=threads" or "notmuch search --output=messages" yet? Note that the --format=json output won't be affected by the change I'm proposing here. -Carl -- carl.d.worth@intel.com