Emacs interface (notmuch.el)
----------------------------
+Enhance '+' and '-' in the search view to operate on an entire region
+if set.
+
+Fix '*' to work by simply calling '+' or '-' on a region consisting of
+the entire buffer.
+
Add a global keybinding table for notmuch, and then view-specific
tables that add to it.
notmuch command-line tool
-------------------------
+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>
Add a "--count-only" (or so?) option to "notmuch search" for returning
the count of search results.
+Add documented syntax for searching all threads/messages.
+
Give "notmuch restore" some progress indicator. Until we get the
Xapian bugs fixed that are making this operation slow, we really need
to let the user know that things are still moving.
(tag-name, search-specification). The database is responsible for
ensuring that the virtual tag is always consistent.
+Indicate to the user if two files with the same message ID have
+content that is actually different in some interesting way. Perhaps
+notmuch initially sees all changes as interesting, and quickly learns
+from the user which changes are not interesting (such as the very
+common mailing-list footer).
+
+Fix notmuch_query_count_messages to share code with
+notmuch_query_search_messages rather than duplicating code. (And
+consider renaming it as well.)
+
General
-------
Audit everything for dealing with out-of-memory (and drop xutil.c).