-Make "notmuch setup" not index all messages, but only what it can do
-in a reasonable amount of time, (then add "notmuch index" so the user
-can complete the job when convenient).
+Fix the --format=json option to not imply --entire-thread.
+
+Implement "notmuch search --exclude-threads=<search-terms>" to allow
+for excluding muted threads, (and any other negative, thread-based
+filtering that the user wants to do).
+
+Fix "notmuch show" so that the UI doesn't fail to show a thread that
+is visible in a search buffer, but happens to no longer match the
+current search. (Perhaps add a --matching=<secondary-search-terms>
+option (or similar) to "notmuch show".) For now, this is being worked
+around in the emacs interface by noticing that "notmuch show" returns
+nothing and re-rerunning the command without the extra arguments.
+
+Teach "notmuch search" to return many different kinds of results. Some
+ideas:
+
+ notmuch search --output=threads # Default if no --output is given
+ notmuch search --output=messages
+ notmuch search --output=tags
+ notmuch search --output=addresses
+ notmuch search --output=terms
+
+Add a "--format" option to "notmuch search", (something printf-like
+for selecting what gets printed).