On Thu, Aug 30 2018, David Bremner wrote:
> For non-root messages, this should not should anything currently, as
> the messages are already added in date order. In the future we will
> add some non-root messages in a second pass out of order and the
> sorting will be useful. It does fix the order of multiple
> root-messages (although it is overkill for that).
> ---
> lib/message.cc | 47 +++++++++++++++++++++++++++++++++++++
> lib/notmuch-private.h | 3 +++
> lib/thread.cc | 6 +++++
> test/T510-thread-replies.sh | 2 --
> 4 files changed, 56 insertions(+), 2 deletions(-)
>
> diff --git a/lib/message.cc b/lib/message.cc
> index 153e4bed..59e42d36 100644
> --- a/lib/message.cc
> +++ b/lib/message.cc
> @@ -588,6 +588,53 @@ _notmuch_message_add_reply (notmuch_message_t *message,
> _notmuch_message_list_add_message (message->replies, reply);
> }
>
> +static int
> +_cmpmsg (const void *pa, const void *pb)
> +{
> + notmuch_message_t **a = (notmuch_message_t **) pa;
> + notmuch_message_t **b = (notmuch_message_t **) pb;
> + time_t time_a = notmuch_message_get_date (*a);
> + time_t time_b = notmuch_message_get_date (*b);
> +
> + return (int) difftime (time_a, time_b);
time_t is often 64 bits now (and I suspect signed). int is often 32-bits
(gcc -dM -E -xc /dev/null | grep -i size to verify), perhaps time_t as
return value ?
> +}
> +
> +notmuch_message_list_t *
> +_notmuch_message_sort_subtrees (void *ctx, notmuch_message_list_t *list)
> +{
> +
> + size_t count = 0;
> + size_t capacity = 16;
> +
> + if (! list)
> + return list;
> +
> + void *local = talloc_new (NULL);
> + notmuch_message_list_t *new_list = _notmuch_message_list_create (ctx);
> + notmuch_message_t **message_array = talloc_zero_array (local, notmuch_message_t *, capacity);
> +
> + for (notmuch_messages_t *messages = _notmuch_messages_create (list);
> + notmuch_messages_valid (messages);
> + notmuch_messages_move_to_next (messages)) {
> + notmuch_message_t *root = notmuch_messages_get (messages);
> + if (count >= capacity) {
> + capacity *= 2;
> + message_array = talloc_realloc (local, message_array, notmuch_message_t *, capacity);
> + }
> + message_array[count++] = root;
> + root->replies = _notmuch_message_sort_subtrees (root, root->replies);
> + }
> +
> + qsort (message_array, count, sizeof (notmuch_message_t *), _cmpmsg);
> + for (size_t i = 0; i < count; i++) {
> + _notmuch_message_list_add_message (new_list, message_array[i]);
> + }
> +
> + talloc_free (local);
> + talloc_free (list);
> + return new_list;
> +}
> +
> notmuch_messages_t *
> notmuch_message_get_replies (notmuch_message_t *message)
> {
> diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
> index 499d73d4..725f9a7e 100644
> --- a/lib/notmuch-private.h
> +++ b/lib/notmuch-private.h
> @@ -539,6 +539,9 @@ _notmuch_message_remove_unprefixed_terms (notmuch_message_t *message);
> const char *
> _notmuch_message_get_thread_id_only(notmuch_message_t *message);
>
> +notmuch_message_list_t *
> +_notmuch_message_sort_subtrees (void *ctx, notmuch_message_list_t *list);
> +
> /* sha1.c */
>
> char *
> diff --git a/lib/thread.cc b/lib/thread.cc
> index e961c76b..b599a97d 100644
> --- a/lib/thread.cc
> +++ b/lib/thread.cc
> @@ -429,6 +429,12 @@ _resolve_thread_relationships (notmuch_thread_t *thread)
> _notmuch_message_list_add_message (thread->toplevel_list, message);
> }
>
> + /* XXX this could be made conditional on messages being inserted
> + * (out of order) in later passes
> + */
> + thread->toplevel_list = _notmuch_message_sort_subtrees (thread, thread->toplevel_list);
> +
> +
> /* XXX: After scanning through the entire list looking for parents
> * via "In-Reply-To", we should do a second pass that looks at the
> * list of messages IDs in the "References" header instead. (And
> diff --git a/test/T510-thread-replies.sh b/test/T510-thread-replies.sh
> index 753c7ae1..72af50df 100755
> --- a/test/T510-thread-replies.sh
> +++ b/test/T510-thread-replies.sh
> @@ -192,7 +192,6 @@ EOF
> test_expect_equal_file EXPECTED OUTPUT
>
> test_begin_subtest "reply to ghost (RT)"
> -test_subtest_known_broken
> notmuch show --entire-thread=true id:87bmc6lp3h.fsf@len.workgroup | grep ^Subject: | head -1 > OUTPUT
> cat <<EOF > EXPECTED
> Subject: FYI: xxxx xxxxxxx xxxxxxxxxxxx xxx
> @@ -200,7 +199,6 @@ EOF
> test_expect_equal_file EXPECTED OUTPUT
>
> test_begin_subtest "reply to ghost (RT/tree view)"
> -test_subtest_known_broken
> test_emacs '(notmuch-tree "id:87bmc6lp3h.fsf@len.workgroup")
> (notmuch-test-wait)
> (test-output)
> --
> 2.18.0
>
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