in most (all?) UIs, import/export works on an already created account,
so, dc_accounts_import_account() does not really help here -
but adds some noise and confusion
eg. as for the other dc_accounts_t functions,
the corrsponding dc_context_t functions must not be called.
if really a new account is required for import,
it seems to be easier to call add_account() before import.
Do not process names, avatars, location XMLs, message signature
etc. for duplicate messages.
Previously only `add_parts` was stopped early, but not
`dc_receive_imf`. Also, `dc_receive_imf` processed From: and To:
fields and applied names to contacts even before checking the
Message-ID.
Fake Message-ID generation procedure is changed to operate on raw
header values to avoid interacting with the database.
as by reviving qr codes,
there may be more than one token for a chat,
ensure, the most recent token and only one token is returned
by the sql-command for looking up tokens
(used for generating new codes)
Raw MIME messages may contain non-ASCII characters. Attempting to
store them as TEXT by using String::from_utf8_lossy results in
non-ASCII characters being replaced with Unicode U+FFFD "REPLACEMENT
CHARACTER" which is later incorrectly decoded when attempting to parse
`mime_headers` content into HTML.
Normally they should not end up in contact requests, but if they do,
we want to show them. Otherwise it is completely impossible to see
them until the chat is moved out of contact requests.
Previously chats created by outgoing classic emails went into contact
requests (deaddrop). Outgoing messages are not shown in contact
requests, so created chat was not shown anywhere. With this fix chat
is created both for outgoing classic emails and outgoing chat emails.
Since classical messages are not deleted when show_emails setting is
set to "0" and remain in the database, they should be shown
somewhere. Otherwise they may reappear later when the setting is
enabled again.
New `dc_msg_is_bot()` C API and corresponding `Message.is_bot()`
Python API can be used to check if incoming message is sent by a bot,
e.g. to avoid two echo bots replying indefinitely to each other.
"Bot" flag is not set for outgoing messages, but may be set for
BCC-self messages. For now documentation says that `dc_msg_is_bot()`
return value is unspecified for outgoing messages. It can be better
specified later if needed for specific applications, e.g. sharing an
account with a helper bot.
the default account created by dc_accounts_new()
is annoying when doing a migrate/import account;
in this case, you must not forget to remove the default account.
in between you have two account,
and accounts are swiched.
it seems to be better
to just call add_account() on a new account object as needed.
systemli.org seems not to include Received: header in messages sent to
self, including BCC-self and messages sent to Saved message chat. This
results in all these messages not being displayed on other devices in
multi-device setting. To work around this problem we restrict draft
detection based on Received: header to classical mails.
Delta Chat already implements proper draft detection based on the
\Draft message flag and \Drafts folder flag. However, Thunderbird does
not set \Draft flag when message is stored as "Template". To make
draft detection for Thunderbird more robust, in case Received: header
check is removed altogether later, we check for X-Mozilla-Draft-Info
header which Thunderbird sets both for "Drafts" and "Templates".
probably they come in by the latest sqlx<->rusqlite moves,
however, as they are followed by subsequent migrations,
that should not have been a big bug in the past
(maybe unless the app was killed at a bad moment)
