lei: Add transient wrapper for piem-lei-query

Expose (most if not all) relevant arguments of lei-q in a new
transient.  The only somewhat tricky part here is propagating the
original arguments so that piem-lei-query-thread and
piem-lei-query-show can find messages that require a non-default
source (e.g., an unregistered external or a remote source when there
are local externals configured).

While remote operations work, the current design is still focused on a
setup where externals are configured locally, as described in
<20210605211402.20304-1-kyle@kyleam.com> (e.g., there's no attempt to
limit the number of times the server is hit).

Using the key 's' (for search) is unfortunate given the
command name is `lei q', but I think that's better than using 'q',
which is pretty widely used for "quit" in Emacs buffers.

Message-Id: <20211025035630.297598-7-kyle@kyleam.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/TODO b/TODO
index 94ecd8d..97d2d7f 100644
--- a/TODO
+++ b/TODO
@@ -40,5 +40,3 @@ See <https://public-inbox.org/meta/20210224204950.GA2076@dcvr> and
 ** show: support replying
 
 ** transients for some other lei commands
-
-** transient wrapper around piem-lei-query