[PATCH v4] Add notmuch-show--build-queries.

[David Bremner]

Matt Armstrong <marmstrong at google.com> writes:

> notmuch-show--build-buffer now queries a list of queries built by the
> former.  This simplifies the logic.  It also provides an easy place to
> experiment with alternate sets of queries for given notmuch-show-*
> variables (e.g. users can use advice-add to do so in a surgical way).

pushed to master

d