The material part of https://github.com/ars3niy/tdlib-purple/pull/159 -- with the

default switched to TRUE (to show self-destruct messages out of the box).

	-mi

--- purple-info.h

+++ purple-info.h

@@ -40,6 +40,8 @@ namespace AccountOptions {

     constexpr gboolean    EnableSecretChatsDefault   = TRUE;

     constexpr const char *AnimatedStickers           = "animated-stickers";

     constexpr gboolean    AnimatedStickersDefault    = TRUE;

+    constexpr const char *ShowSelfDestruct           = "show-self-destruct";

+    constexpr gboolean    ShowSelfDestructDefault    = TRUE;

     constexpr const char *DownloadBehaviour          = "download-behaviour";

     constexpr const char *DownloadBehaviourHyperlink = "hyperlink";

     constexpr const char *DownloadBehaviourStandard  = "file-transfer";

--- receiving.cpp

+++ receiving.cpp

@@ -634,22 +634,37 @@ void showMessage(const td::td_api::chat &chat, IncomingMessage &fullMessage,

     messageInfo.repliedMessage = std::move(fullMessage.repliedMessage);

     if (message.ttl_ != 0) {

-        // TRANSLATOR: In-chat warning message

-        const char *text   = _("Received self-destructing message, not displayed due to lack of support");

-        std::string notice = makeNoticeWithSender(chat, messageInfo, text, account.purpleAccount);

-        showMessageText(account, chat, messageInfo, NULL, notice.c_str());

-        return;

+        if (purple_account_get_bool(account.purpleAccount, AccountOptions::ShowSelfDestruct, AccountOptions::ShowSelfDestructDefault)) {

+            // TRANSLATOR: In-chat warning message

+            const char *text   = _("Received self-destructing message, displaying anyway");

+            std::string notice = makeNoticeWithSender(chat, messageInfo, text, account.purpleAccount);

+            showMessageText(account, chat, messageInfo, NULL, notice.c_str());

+        } else {

+            // TRANSLATOR: In-chat warning message

+            const char *text   = _("Received self-destructing message, not displayed due to lack of support");

+            std::string notice = makeNoticeWithSender(chat, messageInfo, text, account.purpleAccount);

+            showMessageText(account, chat, messageInfo, NULL, notice.c_str());

+            return;

+        }

     }

     FileInfo fileInfo;

     getFileFromMessage(fullMessage, fileInfo);

     if (fileInfo.secret) {

-        // TRANSLATOR: In-chat warning message

-        std::string notice = formatMessage("Ignoring secret file ({})", fileInfo.description);

-        notice = makeNoticeWithSender(chat, messageInfo, notice.c_str(), account.purpleAccount);

-        showMessageText(account, chat, messageInfo, !fileInfo.caption.empty() ? fileInfo.caption.c_str() : nullptr,

-                        notice.c_str());

-        return;

+        if (purple_account_get_bool(account.purpleAccount, AccountOptions::ShowSelfDestruct, AccountOptions::ShowSelfDestructDefault)) {

+            // TRANSLATOR: In-chat warning message

+            std::string notice = formatMessage("Received secret file {}, displaying anyway", fileInfo.description);

+            notice = makeNoticeWithSender(chat, messageInfo, notice.c_str(), account.purpleAccount);

+            showMessageText(account, chat, messageInfo, !fileInfo.caption.empty() ? fileInfo.caption.c_str() : nullptr,

+                            notice.c_str());

+        } else {

+            // TRANSLATOR: In-chat warning message

+            std::string notice = formatMessage("Ignoring secret file ({})", fileInfo.description);

+            notice = makeNoticeWithSender(chat, messageInfo, notice.c_str(), account.purpleAccount);

+            showMessageText(account, chat, messageInfo, !fileInfo.caption.empty() ? fileInfo.caption.c_str() : nullptr,

+                            notice.c_str());

+            return;

+        }

     }

     switch (message.content_->get_id()) {

--- tdlib-purple.cpp

+++ tdlib-purple.cpp

@@ -1020,6 +1020,11 @@ static void tgprpl_init (PurplePlugin *plugin)

     prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, opt);

 #endif

+    // TRANSLATOR: Account settings, key (boolean)

+    opt = purple_account_option_bool_new(_("Show self-destructing messages anyway"), AccountOptions::ShowSelfDestruct,

+                                         AccountOptions::ShowSelfDestructDefault);

+    prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, opt);

+

     if (canDisableReadReceipts()) {

         opt = purple_account_option_bool_new ("Send read receipts",

                                               AccountOptions::ReadReceipts,