Previously the elide messages code got the entire-thread from
notmuch-show.c and then threw away all non-matching messages. This
version calls notmuch-show.c without the --entire-thread flag so
it never receives the non-matching messages in the first place.

This makes it substantially faster.
---
 emacs/notmuch-show.el |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 36cad93..b8fc9ef 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -958,9 +958,9 @@ message at DEPTH in the current thread."
   "Insert the message tree TREE at depth DEPTH in the current thread."
   (let ((msg (car tree))
        (replies (cadr tree)))
-    (if (or (not notmuch-show-elide-non-matching-messages)
-           (plist-get msg :match))
-       (notmuch-show-insert-msg msg depth))
+    ;; We test whether there is a message or just some replies.
+    (when msg
+      (notmuch-show-insert-msg msg depth))
     (notmuch-show-insert-thread replies (1+ depth))))
 
 (defun notmuch-show-insert-thread (thread depth)
@@ -1041,16 +1041,18 @@ function is used."
             (args (if notmuch-show-query-context
                       (append (list "\'") basic-args
                               (list "and (" notmuch-show-query-context ")\'"))
-                    (append (list "\'") basic-args (list "\'")))))
-       (notmuch-show-insert-forest (notmuch-query-get-threads
-                                    (cons "--exclude=false" args)))
+                    (append (list "\'") basic-args (list "\'"))))
+            (cli-args (cons "--exclude=false"
+                            (when notmuch-show-elide-non-matching-messages
+                              (list "--entire-thread=false")))))
+
+       (notmuch-show-insert-forest (notmuch-query-get-threads (append cli-args 
args)))
        ;; If the query context reduced the results to nothing, run
        ;; the basic query.
        (when (and (eq (buffer-size) 0)
                   notmuch-show-query-context)
          (notmuch-show-insert-forest
-          (notmuch-query-get-threads
-           (cons "--exclude=false" basic-args)))))
+          (notmuch-query-get-threads (append cli-args basic-args)))))
 
       (jit-lock-register #'notmuch-show-buttonise-links)
 
-- 
1.7.9.1

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