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lib: fix an exclude bug

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When the exclude tags contain a tag that does not occur anywhere in
the Xapian database the exclusion fails. We modify the way the query
is constructed to `work around' this. (In fact the new code is cleaner
anyway.)

It also seems to fix another exclusion failure bug reported by
jrollins but we have not yet worked out why it helps in that case.
This commit is contained in:
Mark Walters 2012-03-14 12:26:54 +00:00 committed by David Bremner
parent 1351aafac1
commit c695534df5
1 changed files with 3 additions and 2 deletions
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5
lib/query.cc
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@ -219,13 +219,14 @@ notmuch_query_search_messages (notmuch_query_t *query)
if (query->exclude_terms) { if (query->exclude_terms) {
exclude_query = _notmuch_exclude_tags (query, final_query); exclude_query = _notmuch_exclude_tags (query, final_query);
exclude_query = Xapian::Query (Xapian::Query::OP_AND,
exclude_query, final_query);
if (query->omit_excluded_messages) if (query->omit_excluded_messages)
final_query = Xapian::Query (Xapian::Query::OP_AND_NOT, final_query = Xapian::Query (Xapian::Query::OP_AND_NOT,
final_query, exclude_query); final_query, exclude_query);
else { else {
exclude_query = Xapian::Query (Xapian::Query::OP_AND,
exclude_query, final_query);
enquire.set_weighting_scheme (Xapian::BoolWeight()); enquire.set_weighting_scheme (Xapian::BoolWeight());
enquire.set_query (exclude_query); enquire.set_query (exclude_query);