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message: use fake Message-ID when empty

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Previously, mu generated a fake message ID for messages without a
Message-ID header. This fake message ID allows these messages to show in
an --include-related query. However, if a message contained a Message-ID
header with the value equal to the empty string, we did not generate a
fake message ID in the index, and consequently, these messages failed to
appear in an --include-related query. This change uses a fake message ID
when the Message-ID header is absent _or_ empty.
This commit is contained in:
Daniel Colascione
2022-10-23 14:30:35 -04:00
committed by Dirk-Jan C. Binnema
parent 822f49d41a
commit f0bba8e1fa
2 changed files with 48 additions and 1 deletions
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5
lib/message/mu-message.cc
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@ -638,7 +638,10 @@ fill_document(Message::Private& priv)
const auto path{doc.string_value(Field::Id::Path)};
const auto refs{mime_msg.references()};
const auto message_id{mime_msg.message_id().value_or(fake_message_id(path))};
const auto& raw_message_id = mime_msg.message_id();
const auto message_id = raw_message_id.has_value() && !raw_message_id->empty()
? *raw_message_id
: fake_message_id(path);
process_message(mime_msg, path, priv);