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Name thread based on matching msgs instead of first msg.

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At the moment all threads are named based on the name of the first message
in the thread. However, this can cause problems if people either start
new threads by replying-all (as unfortunately, many out there do) or
change the subject of their mails to reflect a shift in a thread on a
list.

This patch names threads based on (a) matches for the query, and (b) the
search order. If the search order is oldest-first (as in the default
inbox) it chooses the oldest matching message as the subject. If the
search order is newest-first it chooses the newest one.

Reply prefixes ("Re: ", "Aw: ", "Sv: ", "Vs: ") are ignored
(case-insensitively) so a Re: won't change the subject.

Note that this adds a "sort" argument to _notmuch_thread_create and
_thread_add_matched_message, so that when constructing the thread we can
be aware of the sort order.

Signed-off-by: Jesse Rosenthal <jrosenthal@jhu.edu>
This commit is contained in:
Jesse Rosenthal 2010-04-17 13:59:22 -04:00 committed by Carl Worth
parent 2186cac8e7
commit 4971b85641
3 changed files with 32 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
lib/notmuch-private.h
View file

@ -205,7 +205,8 @@ notmuch_thread_t *
_notmuch_thread_create (void *ctx,
notmuch_database_t *notmuch,
const char *thread_id,
const char *query_string);
const char *query_string,
notmuch_sort_t sort);
/* message.cc */

3
lib/query.cc
View file

@ -299,7 +299,8 @@ notmuch_threads_get (notmuch_threads_t *threads)
return _notmuch_thread_create (threads->query,
threads->query->notmuch,
threads->thread_id,
threads->query->query_string);
threads->query->query_string,
threads->query->sort);
}
void

32
lib/thread.cc
View file

@ -129,7 +129,8 @@ _thread_add_message (notmuch_thread_t *thread,
static void
_thread_add_matched_message (notmuch_thread_t *thread,
notmuch_message_t *message)
notmuch_message_t *message,
notmuch_sort_t sort)
{
time_t date;
notmuch_message_t *hashed_message;
@ -142,6 +143,28 @@ _thread_add_matched_message (notmuch_thread_t *thread,
if (date > thread->newest || ! thread->matched_messages)
thread->newest = date;
const char *subject;
const char *cleaned_subject;
subject = notmuch_message_get_header (message, "subject");
if ((strncasecmp (subject, "Re: ", 4) == 0) ||
(strncasecmp (subject, "Aw: ", 4) == 0) ||
(strncasecmp (subject, "Vs: ", 4) == 0) ||
(strncasecmp (subject, "Sv: ", 4) == 0)) {
cleaned_subject = talloc_strndup (thread,
subject + 4,
strlen(subject) - 4);
} else {
cleaned_subject = talloc_strdup (thread, subject);
}
if ((sort == NOTMUCH_SORT_OLDEST_FIRST && date <= thread->newest) ||
(sort != NOTMUCH_SORT_OLDEST_FIRST && date == thread->newest)) {
thread->subject = talloc_strdup (thread, cleaned_subject);
}
thread->matched_messages++;
if (g_hash_table_lookup_extended (thread->message_hash,
@ -209,7 +232,8 @@ notmuch_thread_t *
_notmuch_thread_create (void *ctx,
notmuch_database_t *notmuch,
const char *thread_id,
const char *query_string)
const char *query_string,
notmuch_sort_t sort)
{
notmuch_thread_t *thread;
const char *thread_id_query_string;
@ -296,7 +320,7 @@ _notmuch_thread_create (void *ctx,
_thread_add_message (thread, message);
if (! matched_is_subset_of_thread)
_thread_add_matched_message (thread, message);
_thread_add_matched_message (thread, message, sort);
_notmuch_message_close (message);
}
@ -323,7 +347,7 @@ _notmuch_thread_create (void *ctx,
notmuch_messages_move_to_next (messages))
{
message = notmuch_messages_get (messages);
_thread_add_matched_message (thread, message);
_thread_add_matched_message (thread, message, sort);
_notmuch_message_close (message);
}