complete ghost-on-removal-when-shared-thread-exists

To fully complete the ghost-on-removal-when-shared-thread-exists
proposal, we need to clear all ghost messages when the last active
message is removed from a thread.

Amended by db: Remove the last test of T530, as it no longer makes sense
if we are garbage collecting ghost messages.

diff --git a/lib/message.cc b/lib/message.cc
index b940453859f3f754c1c347246b96601840fd4d9b..68393055b3eb73b73ee3a1a4b5bde38ce8d94c73 100644 (file)
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1098,6 +1098,26 @@ _notmuch_message_delete (notmuch_message_t *message)
 
        notmuch_message_destroy (ghost);
        status = COERCE_STATUS (private_status, "Error converting to ghost message");
+    } else {
+       /* the thread is empty; drop all ghost messages from it */
+       notmuch_messages_t *messages;
+       status = _notmuch_query_search_documents (query,
+                                                 "ghost",
+                                                 &messages);
+       if (status == NOTMUCH_STATUS_SUCCESS) {
+           notmuch_status_t last_error = NOTMUCH_STATUS_SUCCESS;
+           while (notmuch_messages_valid (messages)) {
+               message = notmuch_messages_get (messages);
+               status = _notmuch_message_delete (message);
+               if (status) /* we'll report the last failure we see;
+                            * if there is more than one failure, we
+                            * forget about previous ones */
+                   last_error = status;
+               notmuch_message_destroy (message);
+               notmuch_messages_move_to_next (messages);
+           }
+           status = last_error;
+       }
     }
     notmuch_query_destroy (query);
     return status;

diff --git a/test/T530-upgrade.sh b/test/T530-upgrade.sh
index 7faf03d335099d92c6a4d4942441904e019ad4b0..a3a7d39c5251acd32edc987041596bb4601e40db 100755 (executable)
--- a/test/T530-upgrade.sh
+++ b/test/T530-upgrade.sh
@@ -116,25 +116,4 @@ MAIL_DIR/bar/new/21:2,
 MAIL_DIR/bar/new/22:2,
 MAIL_DIR/cur/51:2,"
 
-# Ghost messages are difficult to test since they're nearly invisible.
-# However, if the upgrade works correctly, the ghost message should
-# retain the right thread ID even if all of the original messages in
-# the thread are deleted.  That's what we test.  This won't detect if
-# the upgrade just plain didn't happen, but it should detect if
-# something went wrong.
-test_begin_subtest "ghost message retains thread ID"
-# Upgrade database
-notmuch new
-# Get thread ID of real message
-thread=$(notmuch search --output=threads id:4EFC743A.3060609@april.org)
-# Delete all real messages in that thread
-rm $(notmuch search --output=files $thread)
-notmuch new
-# "Deliver" ghost message
-add_message '[subject]=Ghost' '[id]=4EFC3931.6030007@april.org'
-# If the ghost upgrade worked, the new message should be attached to
-# the existing thread ID.
-nthread=$(notmuch search --output=threads id:4EFC3931.6030007@april.org)
-test_expect_equal "$thread" "$nthread"
-
 test_done

diff --git a/test/T590-thread-breakage.sh b/test/T590-thread-breakage.sh
index 4385c066241bc76e574044f90d91fc30b7bb948e..6e4031af46bbcee14b90d5c782ca4d62fef2ba30 100755 (executable)
--- a/test/T590-thread-breakage.sh
+++ b/test/T590-thread-breakage.sh
@@ -119,10 +119,6 @@ notmuch new >/dev/null
 test_thread_count 0 'All messages gone: no threads'
 test_content_count apple 0
 test_content_count banana 0
-test_begin_subtest 'No ghosts should remain after full thread deletion'
-# this is known to fail; we are leaking ghost messages deliberately
-test_subtest_known_broken
-ghosts=$(../ghost-report ${MAIL_DIR}/.notmuch/xapian)
-test_expect_equal "$ghosts" "0"
+test_ghost_count 0 'No ghosts should remain after full thread deletion'
 
 test_done