diff --git a/ui/basic_click_handlers.cpp b/ui/basic_click_handlers.cpp
index 21b55d9..ca59447 100644
--- a/ui/basic_click_handlers.cpp
+++ b/ui/basic_click_handlers.cpp
@@ -71,13 +71,13 @@ void UrlClickHandler::Open(QString url, QVariant context) {
 
 bool UrlClickHandler::IsSuspicious(const QString &url) {
 	static const auto Check1 = QRegularExpression(
-		"^(https?://)?([^/#\\:]+)([/#\\:]|$)",
+		"^((https?|s?ftp)://)?([^/#\\:]+)([/#\\:]|$)",
 		QRegularExpression::CaseInsensitiveOption);
 	const auto match1 = Check1.match(url);
 	if (!match1.hasMatch()) {
 		return false;
 	}
-	const auto domain = match1.capturedRef(2);
+	const auto domain = match1.capturedRef(3);
 	static const auto Check2 = QRegularExpression("^(.*)\\.[a-zA-Z]+$");
 	const auto match2 = Check2.match(domain);
 	if (!match2.hasMatch()) {
diff --git a/ui/text/text.cpp b/ui/text/text.cpp
index 60a8a52..ca49fdc 100644
--- a/ui/text/text.cpp
+++ b/ui/text/text.cpp
@@ -21,10 +21,14 @@ namespace Text {
 namespace {
 
 constexpr auto kStringLinkIndexShift = uint16(0x8000);
+constexpr auto kMaxDiacAfterSymbol = 2;
 
-Qt::LayoutDirection StringDirection(const QString &str, int32 from, int32 to) {
-	const ushort *p = reinterpret_cast<const ushort*>(str.unicode()) + from;
-	const ushort *end = p + (to - from);
+Qt::LayoutDirection StringDirection(
+		const QString &str,
+		int from,
+		int to) {
+	auto p = reinterpret_cast<const ushort*>(str.unicode()) + from;
+	const auto end = p + (to - from);
 	while (p < end) {
 		uint ucs4 = *p;
 		if (QChar::isHighSurrogate(ucs4) && p < end - 1) {
@@ -98,7 +102,9 @@ TextWithEntities PrepareRichFromRich(
 	return result;
 }
 
-QFixed ComputeStopAfter(const TextParseOptions &options, const style::TextStyle &st) {
+QFixed ComputeStopAfter(
+		const TextParseOptions &options,
+		const style::TextStyle &st) {
 	return (options.maxw > 0 && options.maxh > 0)
 		? ((options.maxh / st.font->height) + 1) * options.maxw
 		: QFIXED_MAX;
@@ -112,11 +118,17 @@ bool ComputeCheckTilde(const style::TextStyle &st) {
 		&& (font->f.family() == qstr("DAOpenSansRegular"));
 }
 
-} // namespace
-} // namespace Text
-} // namespace Ui
+bool IsParagraphSeparator(QChar ch) {
+	switch (ch.unicode()) {
+	case QChar::LineFeed:
+		return true;
+	default:
+		break;
+	}
+	return false;
+}
 
-bool chIsBad(QChar ch) {
+bool IsBad(QChar ch) {
 	return (ch == 0)
 		|| (ch >= 8232 && ch < 8237)
 		|| (ch >= 65024 && ch < 65040 && ch != 65039)
@@ -130,9 +142,13 @@ bool chIsBad(QChar ch) {
 			&& !Platform::IsMac10_12OrGreater()
 			&& ch >= 0x0B00
 			&& ch <= 0x0B7F
-			&& chIsDiac(ch));
+			&& IsDiac(ch));
 }
 
+} // namespace
+} // namespace Text
+} // namespace Ui
+
 QString textcmdSkipBlock(ushort w, ushort h) {
 	static QString cmd(5, TextCommand);
 	cmd[1] = QChar(TextCommandSkipBlock);
@@ -461,13 +477,13 @@ void Parser::createBlock(int32 skipBack) {
 		}
 		_lastSkipped = false;
 		if (_emoji) {
-			_t->_blocks.push_back(std::make_unique<EmojiBlock>(_t->_st->font, _t->_text, _blockStart, len, _flags, _lnkIndex, _emoji));
+			_t->_blocks.push_back(Block::Emoji(_t->_st->font, _t->_text, _blockStart, len, _flags, _lnkIndex, _emoji));
 			_emoji = nullptr;
 			_lastSkipped = true;
 		} else if (newline) {
-			_t->_blocks.push_back(std::make_unique<NewlineBlock>(_t->_st->font, _t->_text, _blockStart, len, _flags, _lnkIndex));
+			_t->_blocks.push_back(Block::Newline(_t->_st->font, _t->_text, _blockStart, len, _flags, _lnkIndex));
 		} else {
-			_t->_blocks.push_back(std::make_unique<TextBlock>(_t->_st->font, _t->_text, _t->_minResizeWidth, _blockStart, len, _flags, _lnkIndex));
+			_t->_blocks.push_back(Block::Text(_t->_st->font, _t->_text, _t->_minResizeWidth, _blockStart, len, _flags, _lnkIndex));
 		}
 		_blockStart += len;
 		blockCreated();
@@ -477,7 +493,7 @@ void Parser::createBlock(int32 skipBack) {
 void Parser::createSkipBlock(int32 w, int32 h) {
 	createBlock();
 	_t->_text.push_back('_');
-	_t->_blocks.push_back(std::make_unique<SkipBlock>(_t->_st->font, _t->_text, _blockStart++, w, h, _lnkIndex));
+	_t->_blocks.push_back(Block::Skip(_t->_st->font, _t->_text, _blockStart++, w, h, _lnkIndex));
 	blockCreated();
 }
 
@@ -745,18 +761,18 @@ bool Parser::readCommand() {
 void Parser::parseCurrentChar() {
 	_ch = ((_ptr < _end) ? *_ptr : 0);
 	_emojiLookback = 0;
-	const auto isNewLine = _multiline && chIsNewline(_ch);
-	const auto isSpace = chIsSpace(_ch);
-	const auto isDiac = chIsDiac(_ch);
+	const auto isNewLine = _multiline && IsNewline(_ch);
+	const auto isSpace = IsSpace(_ch);
+	const auto isDiac = IsDiac(_ch);
 	const auto isTilde = _checkTilde && (_ch == '~');
 	const auto skip = [&] {
-		if (chIsBad(_ch) || _ch.isLowSurrogate()) {
+		if (IsBad(_ch) || _ch.isLowSurrogate()) {
 			return true;
 		} else if (_ch == 0xFE0F && Platform::IsMac()) {
 			// Some sequences like 0x0E53 0xFE0F crash OS X harfbuzz text processing :(
 			return true;
 		} else if (isDiac) {
-			if (_lastSkipped || _emoji || ++_diacs > chMaxDiacAfterSymbol()) {
+			if (_lastSkipped || _emoji || ++_diacs > kMaxDiacAfterSymbol) {
 				return true;
 			}
 		} else if (_ch.isHighSurrogate()) {
@@ -891,10 +907,10 @@ void Parser::trimSourceRange() {
 		_source.entities,
 		_end - _start);
 
-	while (_ptr != _end && chIsTrimmed(*_ptr, _rich) && _ptr != _start + firstMonospaceOffset) {
+	while (_ptr != _end && IsTrimmed(*_ptr, _rich) && _ptr != _start + firstMonospaceOffset) {
 		++_ptr;
 	}
-	while (_ptr != _end && chIsTrimmed(*(_end - 1), _rich)) {
+	while (_ptr != _end && IsTrimmed(*(_end - 1), _rich)) {
 		--_end;
 	}
 }
@@ -913,15 +929,14 @@ void Parser::checkForElidedSkipBlock() {
 
 void Parser::finalize(const TextParseOptions &options) {
 	_t->_links.resize(_maxLnkIndex);
-	for (const auto &block : _t->_blocks) {
-		const auto b = block.get();
-		const auto shiftedIndex = b->lnkIndex();
+	for (auto &block : _t->_blocks) {
+		const auto shiftedIndex = block->lnkIndex();
 		if (shiftedIndex <= kStringLinkIndexShift) {
 			continue;
 		}
 		const auto realIndex = (shiftedIndex - kStringLinkIndexShift);
 		const auto index = _maxLnkIndex + realIndex;
-		b->setLnkIndex(index);
+		block->setLnkIndex(index);
 		if (_t->_links.size() >= index) {
 			continue;
 		}
@@ -935,7 +950,7 @@ void Parser::finalize(const TextParseOptions &options) {
 		}
 	}
 	_t->_links.squeeze();
-	_t->_blocks.shrink_to_fit();
+	_t->_blocks.squeeze();
 	_t->_text.squeeze();
 }
 
@@ -1165,7 +1180,7 @@ public:
 					_wLeft -= _elideRemoveFromEnd;
 				}
 
-				_parDirection = static_cast<NewlineBlock*>(b)->nextDirection();
+				_parDirection = static_cast<const NewlineBlock*>(b)->nextDirection();
 				if (_parDirection == Qt::LayoutDirectionAuto) _parDirection = style::LayoutDirection();
 				initNextParagraph(i + 1);
 
@@ -1187,7 +1202,7 @@ public:
 			}
 
 			if (_btype == TextBlockTText) {
-				auto t = static_cast<TextBlock*>(b);
+				auto t = static_cast<const TextBlock*>(b);
 				if (t->_words.isEmpty()) { // no words in this block, spaces only => layout this block in the same line
 					_last_rPadding += b->f_rpadding();
 
@@ -1678,7 +1693,7 @@ private:
 					}
 					Emoji::Draw(
 						*_p,
-						static_cast<EmojiBlock*>(currentBlock)->emoji,
+						static_cast<const EmojiBlock*>(currentBlock)->_emoji,
 						Emoji::GetSizeNormal(),
 						(glyphX + st::emojiPadding).toInt(),
 						_y + _yDelta + emojiY);
@@ -1847,7 +1862,7 @@ private:
 		_p->fillRect(left, _y + _yDelta, width, _fontHeight, _textPalette->selectBg);
 	}
 
-	void elideSaveBlock(int32 blockIndex, AbstractBlock *&_endBlock, int32 elideStart, int32 elideWidth) {
+	void elideSaveBlock(int32 blockIndex, const AbstractBlock *&_endBlock, int32 elideStart, int32 elideWidth) {
 		if (_elideSavedBlock) {
 			restoreAfterElided();
 		}
@@ -1855,7 +1870,7 @@ private:
 		_elideSavedIndex = blockIndex;
 		auto mutableText = const_cast<String*>(_t);
 		_elideSavedBlock = std::move(mutableText->_blocks[blockIndex]);
-		mutableText->_blocks[blockIndex] = std::make_unique<TextBlock>(_t->_st->font, _t->_text, QFIXED_MAX, elideStart, 0, _elideSavedBlock->flags(), _elideSavedBlock->lnkIndex());
+		mutableText->_blocks[blockIndex] = Block::Text(_t->_st->font, _t->_text, QFIXED_MAX, elideStart, 0, (*_elideSavedBlock)->flags(), (*_elideSavedBlock)->lnkIndex());
 		_blocksSize = blockIndex + 1;
 		_endBlock = (blockIndex + 1 < _t->_blocks.size() ? _t->_blocks[blockIndex + 1].get() : nullptr);
 	}
@@ -1870,7 +1885,7 @@ private:
 		}
 	}
 
-	void prepareElidedLine(QString &lineText, int32 lineStart, int32 &lineLength, AbstractBlock *&_endBlock, int repeat = 0) {
+	void prepareElidedLine(QString &lineText, int32 lineStart, int32 &lineLength, const AbstractBlock *&_endBlock, int repeat = 0) {
 		static const auto _Elide = QString::fromLatin1("...");
 
 		_f = _t->_st->font;
@@ -1980,7 +1995,7 @@ private:
 
 	void restoreAfterElided() {
 		if (_elideSavedBlock) {
-			const_cast<String*>(_t)->_blocks[_elideSavedIndex] = std::move(_elideSavedBlock);
+			const_cast<String*>(_t)->_blocks[_elideSavedIndex] = std::move(*_elideSavedBlock);
 		}
 	}
 
@@ -2034,7 +2049,7 @@ private:
 		return result;
 	}
 
-	void eSetFont(AbstractBlock *block) {
+	void eSetFont(const AbstractBlock *block) {
 		const auto flags = block->flags();
 		const auto usedFont = [&] {
 			if (const auto index = block->lnkIndex()) {
@@ -2609,7 +2624,7 @@ private:
 	}
 
 private:
-	void applyBlockProperties(AbstractBlock *block) {
+	void applyBlockProperties(const AbstractBlock *block) {
 		eSetFont(block);
 		if (_p) {
 			if (block->lnkIndex()) {
@@ -2660,7 +2675,7 @@ private:
 	// elided hack support
 	int _blocksSize = 0;
 	int _elideSavedIndex = 0;
-	std::unique_ptr<AbstractBlock> _elideSavedBlock;
+	std::optional<Block> _elideSavedBlock;
 
 	int _lineStart = 0;
 	int _localFrom = 0;
@@ -2679,7 +2694,8 @@ private:
 String::String(int32 minResizeWidth) : _minResizeWidth(minResizeWidth) {
 }
 
-String::String(const style::TextStyle &st, const QString &text, const TextParseOptions &options, int32 minResizeWidth, bool richText) : _minResizeWidth(minResizeWidth) {
+String::String(const style::TextStyle &st, const QString &text, const TextParseOptions &options, int32 minResizeWidth, bool richText)
+: _minResizeWidth(minResizeWidth) {
 	if (richText) {
 		setRichText(st, text, options);
 	} else {
@@ -2687,60 +2703,6 @@ String::String(const style::TextStyle &st, const QString &text, const TextParseO
 	}
 }
 
-String::String(const String &other)
-: _minResizeWidth(other._minResizeWidth)
-, _maxWidth(other._maxWidth)
-, _minHeight(other._minHeight)
-, _text(other._text)
-, _st(other._st)
-, _links(other._links)
-, _startDir(other._startDir) {
-	_blocks.reserve(other._blocks.size());
-	for (auto &block : other._blocks) {
-		_blocks.push_back(block->clone());
-	}
-}
-
-String::String(String &&other)
-: _minResizeWidth(other._minResizeWidth)
-, _maxWidth(other._maxWidth)
-, _minHeight(other._minHeight)
-, _text(other._text)
-, _st(other._st)
-, _blocks(std::move(other._blocks))
-, _links(other._links)
-, _startDir(other._startDir) {
-	other.clearFields();
-}
-
-String &String::operator=(const String &other) {
-	_minResizeWidth = other._minResizeWidth;
-	_maxWidth = other._maxWidth;
-	_minHeight = other._minHeight;
-	_text = other._text;
-	_st = other._st;
-	_blocks = TextBlocks(other._blocks.size());
-	_links = other._links;
-	_startDir = other._startDir;
-	for (int32 i = 0, l = _blocks.size(); i < l; ++i) {
-		_blocks[i] = other._blocks.at(i)->clone();
-	}
-	return *this;
-}
-
-String &String::operator=(String &&other) {
-	_minResizeWidth = other._minResizeWidth;
-	_maxWidth = other._maxWidth;
-	_minHeight = other._minHeight;
-	_text = other._text;
-	_st = other._st;
-	_blocks = std::move(other._blocks);
-	_links = other._links;
-	_startDir = other._startDir;
-	other.clearFields();
-	return *this;
-}
-
 void String::setText(const style::TextStyle &st, const QString &text, const TextParseOptions &options) {
 	_st = &st;
 	clear();
@@ -2757,8 +2719,8 @@ void String::recountNaturalSize(bool initial, Qt::LayoutDirection optionsDir) {
 	int32 lineHeight = 0;
 	int32 lastNewlineStart = 0;
 	QFixed _width = 0, last_rBearing = 0, last_rPadding = 0;
-	for (auto i = _blocks.cbegin(), e = _blocks.cend(); i != e; ++i) {
-		auto b = i->get();
+	for (auto &block : _blocks) {
+		auto b = block.get();
 		auto _btype = b->type();
 		auto blockHeight = countBlockHeight(b, _st);
 		if (_btype == TextBlockTNewline) {
@@ -2775,7 +2737,7 @@ void String::recountNaturalSize(bool initial, Qt::LayoutDirection optionsDir) {
 				}
 			}
 			lastNewlineStart = b->from();
-			lastNewline = static_cast<NewlineBlock*>(b);
+			lastNewline = &block.unsafe<NewlineBlock>();
 
 			_minHeight += lineHeight;
 			lineHeight = 0;
@@ -2824,19 +2786,19 @@ void String::recountNaturalSize(bool initial, Qt::LayoutDirection optionsDir) {
 }
 
 int String::countMaxMonospaceWidth() const {
-	NewlineBlock *lastNewline = 0;
+	const NewlineBlock *lastNewline = nullptr;
 
 	auto result = QFixed();
 	auto paragraphWidth = QFixed();
 	auto lastNewlineStart = 0;
 	auto fullMonospace = true;
 	QFixed _width = 0, last_rBearing = 0, last_rPadding = 0;
-	for (auto i = _blocks.cbegin(), e = _blocks.cend(); i != e; ++i) {
-		auto b = i->get();
+	for (auto &block : _blocks) {
+		auto b = block.get();
 		auto _btype = b->type();
 		if (_btype == TextBlockTNewline) {
 			lastNewlineStart = b->from();
-			lastNewline = static_cast<NewlineBlock*>(b);
+			lastNewline = &block.unsafe<NewlineBlock>();
 
 			last_rBearing = b->f_rbearing();
 			last_rPadding = b->f_rpadding();
@@ -2892,7 +2854,7 @@ void String::setMarkedText(const style::TextStyle &st, const TextWithEntities &t
 //		for (const QChar *ch = text.constData(), *e = ch + text.size(); ch != e; ++ch) {
 //			if (*ch == TextCommand) {
 //				break;
-//			} else if (chIsNewline(*ch)) {
+//			} else if (IsNewline(*ch)) {
 //				newText.append("},").append(*ch).append("\t{ ");
 //			} else {
 //				if (ch->isHighSurrogate() || ch->isLowSurrogate()) {
@@ -2943,7 +2905,7 @@ bool String::updateSkipBlock(int width, int height) {
 		_blocks.pop_back();
 	}
 	_text.push_back('_');
-	_blocks.push_back(std::make_unique<SkipBlock>(
+	_blocks.push_back(Block::Skip(
 		_st->font,
 		_text,
 		_text.size() - 1,
@@ -3036,7 +2998,7 @@ void String::enumerateLines(
 		}
 
 		if (_btype == TextBlockTText) {
-			auto t = static_cast<TextBlock*>(b.get());
+			const auto t = &b.unsafe<TextBlock>();
 			if (t->_words.isEmpty()) { // no words in this block, spaces only => layout this block in the same line
 				last_rPadding += b->f_rpadding();
 
@@ -3157,31 +3119,31 @@ TextSelection String::adjustSelection(TextSelection selection, TextSelectType se
 	if (from < _text.size() && from <= to) {
 		if (to > _text.size()) to = _text.size();
 		if (selectType == TextSelectType::Paragraphs) {
-			if (!chIsParagraphSeparator(_text.at(from))) {
-				while (from > 0 && !chIsParagraphSeparator(_text.at(from - 1))) {
+			if (!IsParagraphSeparator(_text.at(from))) {
+				while (from > 0 && !IsParagraphSeparator(_text.at(from - 1))) {
 					--from;
 				}
 			}
 			if (to < _text.size()) {
-				if (chIsParagraphSeparator(_text.at(to))) {
+				if (IsParagraphSeparator(_text.at(to))) {
 					++to;
 				} else {
-					while (to < _text.size() && !chIsParagraphSeparator(_text.at(to))) {
+					while (to < _text.size() && !IsParagraphSeparator(_text.at(to))) {
 						++to;
 					}
 				}
 			}
 		} else if (selectType == TextSelectType::Words) {
-			if (!chIsWordSeparator(_text.at(from))) {
-				while (from > 0 && !chIsWordSeparator(_text.at(from - 1))) {
+			if (!IsWordSeparator(_text.at(from))) {
+				while (from > 0 && !IsWordSeparator(_text.at(from - 1))) {
 					--from;
 				}
 			}
 			if (to < _text.size()) {
-				if (chIsWordSeparator(_text.at(to))) {
+				if (IsWordSeparator(_text.at(to))) {
 					++to;
 				} else {
-					while (to < _text.size() && !chIsWordSeparator(_text.at(to))) {
+					while (to < _text.size() && !IsWordSeparator(_text.at(to))) {
 						++to;
 					}
 				}
@@ -3389,7 +3351,7 @@ IsolatedEmoji String::toIsolatedEmoji() const {
 		if (block->lnkIndex()) {
 			return IsolatedEmoji();
 		} else if (type == TextBlockTEmoji) {
-			result.items[index++] = static_cast<EmojiBlock*>(block.get())->emoji;
+			result.items[index++] = block.unsafe<EmojiBlock>()._emoji;
 		} else if (type != TextBlockTSkip) {
 			return IsolatedEmoji();
 		}
@@ -3409,7 +3371,113 @@ void String::clearFields() {
 	_startDir = Qt::LayoutDirectionAuto;
 }
 
-String::~String() = default;
+bool IsWordSeparator(QChar ch) {
+	switch (ch.unicode()) {
+	case QChar::Space:
+	case QChar::LineFeed:
+	case '.':
+	case ',':
+	case '?':
+	case '!':
+	case '@':
+	case '#':
+	case '$':
+	case ':':
+	case ';':
+	case '-':
+	case '<':
+	case '>':
+	case '[':
+	case ']':
+	case '(':
+	case ')':
+	case '{':
+	case '}':
+	case '=':
+	case '/':
+	case '+':
+	case '%':
+	case '&':
+	case '^':
+	case '*':
+	case '\'':
+	case '"':
+	case '`':
+	case '~':
+	case '|':
+		return true;
+	default:
+		break;
+	}
+	return false;
+}
+
+bool IsAlmostLinkEnd(QChar ch) {
+	switch (ch.unicode()) {
+	case '?':
+	case ',':
+	case '.':
+	case '"':
+	case ':':
+	case '!':
+	case '\'':
+		return true;
+	default:
+		break;
+	}
+	return false;
+}
+
+bool IsLinkEnd(QChar ch) {
+	return (ch == TextCommand)
+		|| IsBad(ch)
+		|| IsSpace(ch)
+		|| IsNewline(ch)
+		|| ch.isLowSurrogate()
+		|| ch.isHighSurrogate();
+}
+
+bool IsNewline(QChar ch) {
+	return (ch == QChar::LineFeed)
+		|| (ch == 156);
+}
+
+bool IsSpace(QChar ch, bool rich) {
+	return ch.isSpace()
+		|| (ch < 32 && !(rich && ch == TextCommand))
+		|| (ch == QChar::ParagraphSeparator)
+		|| (ch == QChar::LineSeparator)
+		|| (ch == QChar::ObjectReplacementCharacter)
+		|| (ch == QChar::CarriageReturn)
+		|| (ch == QChar::Tabulation)
+		|| (ch == QChar(8203)/*Zero width space.*/);
+}
+
+bool IsDiac(QChar ch) { // diac and variation selectors
+	return (ch.category() == QChar::Mark_NonSpacing)
+		|| (ch == 1652)
+		|| (ch >= 64606 && ch <= 64611);
+}
+
+bool IsReplacedBySpace(QChar ch) {
+	// \xe2\x80[\xa8 - \xac\xad] // 8232 - 8237
+	// QString from1 = QString::fromUtf8("\xe2\x80\xa8"), to1 = QString::fromUtf8("\xe2\x80\xad");
+	// \xcc[\xb3\xbf\x8a] // 819, 831, 778
+	// QString bad1 = QString::fromUtf8("\xcc\xb3"), bad2 = QString::fromUtf8("\xcc\xbf"), bad3 = QString::fromUtf8("\xcc\x8a");
+	// [\x00\x01\x02\x07\x08\x0b-\x1f] // '\t' = 0x09
+	return (/*code >= 0x00 && */ch <= 0x02)
+		|| (ch >= 0x07 && ch <= 0x09)
+		|| (ch >= 0x0b && ch <= 0x1f)
+		|| (ch == 819)
+		|| (ch == 831)
+		|| (ch == 778)
+		|| (ch >= 8232 && ch <= 8237);
+}
+
+bool IsTrimmed(QChar ch, bool rich) {
+	return (!rich || ch != TextCommand)
+		&& (IsSpace(ch) || IsBad(ch));
+}
 
 } // namespace Text
 } // namespace Ui
diff --git a/ui/text/text.h b/ui/text/text.h
index 709f22a..9019990 100644
--- a/ui/text/text.h
+++ b/ui/text/text.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "ui/text/text_entity.h"
+#include "ui/text/text_block.h"
 #include "ui/painter.h"
 #include "ui/click_handler.h"
 #include "base/flags.h"
@@ -47,19 +48,20 @@ enum class TextSelectType {
 };
 
 struct TextSelection {
-	constexpr TextSelection() : from(0), to(0) {
-	}
+	constexpr TextSelection() = default;
 	constexpr TextSelection(uint16 from, uint16 to) : from(from), to(to) {
 	}
 	constexpr bool empty() const {
 		return from == to;
 	}
-	uint16 from;
-	uint16 to;
+	uint16 from = 0;
+	uint16 to = 0;
 };
+
 inline bool operator==(TextSelection a, TextSelection b) {
 	return a.from == b.from && a.to == b.to;
 }
+
 inline bool operator!=(TextSelection a, TextSelection b) {
 	return !(a == b);
 }
@@ -69,7 +71,6 @@ static constexpr TextSelection AllTextSelection = { 0, 0xFFFF };
 namespace Ui {
 namespace Text {
 
-class AbstractBlock;
 struct IsolatedEmoji;
 
 struct StateRequest {
@@ -108,11 +109,17 @@ struct StateRequestElided : public StateRequest {
 class String {
 public:
 	String(int32 minResizeWidth = QFIXED_MAX);
-	String(const style::TextStyle &st, const QString &text, const TextParseOptions &options = _defaultOptions, int32 minResizeWidth = QFIXED_MAX, bool richText = false);
-	String(const String &other);
-	String(String &&other);
-	String &operator=(const String &other);
-	String &operator=(String &&other);
+	String(
+		const style::TextStyle &st,
+		const QString &text,
+		const TextParseOptions &options = _defaultOptions,
+		int32 minResizeWidth = QFIXED_MAX,
+		bool richText = false);
+	String(const String &other) = default;
+	String(String &&other) = default;
+	String &operator=(const String &other) = default;
+	String &operator=(String &&other) = default;
+	~String() = default;
 
 	int countWidth(int width, bool breakEverywhere = false) const;
 	int countHeight(int width, bool breakEverywhere = false) const;
@@ -168,34 +175,14 @@ public:
 		TextSelection selection = AllTextSelection) const;
 	IsolatedEmoji toIsolatedEmoji() const;
 
-	bool lastDots(int32 dots, int32 maxdots = 3) { // hack for typing animation
-		if (_text.size() < maxdots) return false;
-
-		int32 nowDots = 0, from = _text.size() - maxdots, to = _text.size();
-		for (int32 i = from; i < to; ++i) {
-			if (_text.at(i) == QChar('.')) {
-				++nowDots;
-			}
-		}
-		if (nowDots == dots) return false;
-		for (int32 j = from; j < from + dots; ++j) {
-			_text[j] = QChar('.');
-		}
-		for (int32 j = from + dots; j < to; ++j) {
-			_text[j] = QChar(' ');
-		}
-		return true;
-	}
-
 	const style::TextStyle *style() const {
 		return _st;
 	}
 
 	void clear();
-	~String();
 
 private:
-	using TextBlocks = std::vector<std::unique_ptr<AbstractBlock>>;
+	using TextBlocks = QVector<Block>;
 	using TextLinks = QVector<ClickHandlerPtr>;
 
 	uint16 countBlockEnd(const TextBlocks::const_iterator &i, const TextBlocks::const_iterator &e) const;
@@ -239,6 +226,15 @@ private:
 
 };
 
+[[nodiscard]] bool IsWordSeparator(QChar ch);
+[[nodiscard]] bool IsAlmostLinkEnd(QChar ch);
+[[nodiscard]] bool IsLinkEnd(QChar ch);
+[[nodiscard]] bool IsNewline(QChar ch);
+[[nodiscard]] bool IsSpace(QChar ch, bool rich = false);
+[[nodiscard]] bool IsDiac(QChar ch);
+[[nodiscard]] bool IsReplacedBySpace(QChar ch);
+[[nodiscard]] bool IsTrimmed(QChar ch, bool rich = false);
+
 } // namespace Text
 } // namespace Ui
 
@@ -268,120 +264,3 @@ QString textcmdLink(const QString &url, const QString &text);
 QString textcmdStartSemibold();
 QString textcmdStopSemibold();
 const QChar *textSkipCommand(const QChar *from, const QChar *end, bool canLink = true);
-
-inline bool chIsSpace(QChar ch, bool rich = false) {
-	return ch.isSpace() || (ch < 32 && !(rich && ch == TextCommand)) || (ch == QChar::ParagraphSeparator) || (ch == QChar::LineSeparator) || (ch == QChar::ObjectReplacementCharacter) || (ch == QChar::CarriageReturn) || (ch == QChar::Tabulation) || (ch == QChar(8203)/*Zero width space.*/);
-}
-inline bool chIsDiac(QChar ch) { // diac and variation selectors
-	return (ch.category() == QChar::Mark_NonSpacing) || (ch == 1652) || (ch >= 64606 && ch <= 64611);
-}
-
-bool chIsBad(QChar ch);
-
-inline bool chIsTrimmed(QChar ch, bool rich = false) {
-	return (!rich || ch != TextCommand) && (chIsSpace(ch) || chIsBad(ch));
-}
-inline bool chReplacedBySpace(QChar ch) {
-	// \xe2\x80[\xa8 - \xac\xad] // 8232 - 8237
-	// QString from1 = QString::fromUtf8("\xe2\x80\xa8"), to1 = QString::fromUtf8("\xe2\x80\xad");
-	// \xcc[\xb3\xbf\x8a] // 819, 831, 778
-	// QString bad1 = QString::fromUtf8("\xcc\xb3"), bad2 = QString::fromUtf8("\xcc\xbf"), bad3 = QString::fromUtf8("\xcc\x8a");
-	// [\x00\x01\x02\x07\x08\x0b-\x1f] // '\t' = 0x09
-	return (/*code >= 0x00 && */ch <= 0x02) || (ch >= 0x07 && ch <= 0x09) || (ch >= 0x0b && ch <= 0x1f) ||
-		(ch == 819) || (ch == 831) || (ch == 778) || (ch >= 8232 && ch <= 8237);
-}
-inline int32 chMaxDiacAfterSymbol() {
-	return 2;
-}
-inline bool chIsNewline(QChar ch) {
-	return (ch == QChar::LineFeed || ch == 156);
-}
-inline bool chIsLinkEnd(QChar ch) {
-	return ch == TextCommand || chIsBad(ch) || chIsSpace(ch) || chIsNewline(ch) || ch.isLowSurrogate() || ch.isHighSurrogate();
-}
-inline bool chIsAlmostLinkEnd(QChar ch) {
-	switch (ch.unicode()) {
-	case '?':
-	case ',':
-	case '.':
-	case '"':
-	case ':':
-	case '!':
-	case '\'':
-		return true;
-	default:
-		break;
-	}
-	return false;
-}
-inline bool chIsWordSeparator(QChar ch) {
-	switch (ch.unicode()) {
-	case QChar::Space:
-	case QChar::LineFeed:
-	case '.':
-	case ',':
-	case '?':
-	case '!':
-	case '@':
-	case '#':
-	case '$':
-	case ':':
-	case ';':
-	case '-':
-	case '<':
-	case '>':
-	case '[':
-	case ']':
-	case '(':
-	case ')':
-	case '{':
-	case '}':
-	case '=':
-	case '/':
-	case '+':
-	case '%':
-	case '&':
-	case '^':
-	case '*':
-	case '\'':
-	case '"':
-	case '`':
-	case '~':
-	case '|':
-		return true;
-	default:
-		break;
-	}
-	return false;
-}
-inline bool chIsSentenceEnd(QChar ch) {
-	switch (ch.unicode()) {
-	case '.':
-	case '?':
-	case '!':
-		return true;
-	default:
-		break;
-	}
-	return false;
-}
-inline bool chIsSentencePartEnd(QChar ch) {
-	switch (ch.unicode()) {
-	case ',':
-	case ':':
-	case ';':
-		return true;
-	default:
-		break;
-	}
-	return false;
-}
-inline bool chIsParagraphSeparator(QChar ch) {
-	switch (ch.unicode()) {
-	case QChar::LineFeed:
-		return true;
-	default:
-		break;
-	}
-	return false;
-}
diff --git a/ui/text/text_block.cpp b/ui/text/text_block.cpp
index c2a3f11..d62a114 100644
--- a/ui/text/text_block.cpp
+++ b/ui/text/text_block.cpp
@@ -17,89 +17,34 @@ namespace Text {
 namespace {
 
 struct ScriptLine {
-	ScriptLine() : length(0), textWidth(0) {
-	}
-
-	int32 length;
+	int length = 0;
 	QFixed textWidth;
 };
 
 // All members finished with "_" are internal.
-struct LineBreakHelper
-{
-	LineBreakHelper()
-		: glyphCount(0), maxGlyphs(INT_MAX), currentPosition(0), fontEngine(0), logClusters(0)
-	{
-	}
-
-
+struct LineBreakHelper {
 	ScriptLine tmpData;
 	ScriptLine spaceData;
 
 	QGlyphLayout glyphs;
 
-	int glyphCount;
-	int maxGlyphs;
-	int currentPosition;
+	int glyphCount = 0;
+	int maxGlyphs = INT_MAX;
+	int currentPosition = 0;
 
 	glyph_t previousGlyph_ = 0;
 	QFontEngine *previousFontEngine_ = nullptr;
 
 	QFixed rightBearing;
 
-	QFontEngine *fontEngine;
-	const unsigned short *logClusters;
+	QFontEngine *fontEngine = nullptr;
+	const unsigned short *logClusters = nullptr;
 
-	inline glyph_t currentGlyph() const
-	{
-		Q_ASSERT(currentPosition > 0);
-		Q_ASSERT(logClusters[currentPosition - 1] < glyphs.numGlyphs);
-
-		return glyphs.glyphs[logClusters[currentPosition - 1]];
-	}
-
-	inline void saveCurrentGlyph()
-	{
-		if (currentPosition > 0 &&
-			logClusters[currentPosition - 1] < glyphs.numGlyphs) {
-			previousGlyph_ = currentGlyph(); // needed to calculate right bearing later
-			previousFontEngine_ = fontEngine;
-		} else {
-			previousGlyph_ = 0;
-			previousFontEngine_ = nullptr;
-		}
-	}
-
-	inline void calculateRightBearing(QFontEngine *engine, glyph_t glyph)
-	{
-		qreal rb;
-		engine->getGlyphBearings(glyph, 0, &rb);
-
-		// We only care about negative right bearings, so we limit the range
-		// of the bearing here so that we can assume it's negative in the rest
-		// of the code, as well ase use QFixed(1) as a sentinel to represent
-		// the state where we have yet to compute the right bearing.
-		rightBearing = qMin(QFixed::fromReal(rb), QFixed(0));
-	}
-
-	inline void calculateRightBearing()
-	{
-		if (currentPosition > 0 &&
-			logClusters[currentPosition - 1] < glyphs.numGlyphs) {
-			calculateRightBearing(fontEngine, currentGlyph());
-		} else {
-			rightBearing = 0;
-		}
-	}
-
-	inline void calculateRightBearingForPreviousGlyph()
-	{
-		if (previousGlyph_ > 0) {
-			calculateRightBearing(previousFontEngine_, previousGlyph_);
-		} else {
-			rightBearing = 0;
-		}
-	}
+	glyph_t currentGlyph() const;
+	void saveCurrentGlyph();
+	void calculateRightBearing(QFontEngine *engine, glyph_t glyph);
+	void calculateRightBearing();
+	void calculateRightBearingForPreviousGlyph();
 
 	// We always calculate the right bearing right before it is needed.
 	// So we don't need caching / optimizations referred to delayed right bearing calculations.
@@ -113,26 +58,92 @@ struct LineBreakHelper
 
 	// We express the negative right bearing as an absolute number
 	// so that it can be applied to the width using addition.
-	inline QFixed negativeRightBearing() const
-	{
-		//if (rightBearing == RightBearingNotCalculated)
-		//	return QFixed(0);
-
-		return qAbs(rightBearing);
-	}
+	QFixed negativeRightBearing() const;
 
 };
 
 //const QFixed LineBreakHelper::RightBearingNotCalculated = QFixed(1);
 
+glyph_t LineBreakHelper::currentGlyph() const {
+	Q_ASSERT(currentPosition > 0);
+	Q_ASSERT(logClusters[currentPosition - 1] < glyphs.numGlyphs);
+
+	return glyphs.glyphs[logClusters[currentPosition - 1]];
+}
+
+void LineBreakHelper::saveCurrentGlyph() {
+	if (currentPosition > 0
+		&& logClusters[currentPosition - 1] < glyphs.numGlyphs) {
+		// needed to calculate right bearing later
+		previousGlyph_ = currentGlyph();
+		previousFontEngine_ = fontEngine;
+	} else {
+		previousGlyph_ = 0;
+		previousFontEngine_ = nullptr;
+	}
+}
+
+void LineBreakHelper::calculateRightBearing(
+		QFontEngine *engine,
+		glyph_t glyph) {
+	qreal rb;
+	engine->getGlyphBearings(glyph, 0, &rb);
+
+	// We only care about negative right bearings, so we limit the range
+	// of the bearing here so that we can assume it's negative in the rest
+	// of the code, as well ase use QFixed(1) as a sentinel to represent
+	// the state where we have yet to compute the right bearing.
+	rightBearing = qMin(QFixed::fromReal(rb), QFixed(0));
+}
+
+void LineBreakHelper::calculateRightBearing() {
+	if (currentPosition > 0
+		&& logClusters[currentPosition - 1] < glyphs.numGlyphs) {
+		calculateRightBearing(fontEngine, currentGlyph());
+	} else {
+		rightBearing = 0;
+	}
+}
+
+void LineBreakHelper::calculateRightBearingForPreviousGlyph() {
+	if (previousGlyph_ > 0) {
+		calculateRightBearing(previousFontEngine_, previousGlyph_);
+	} else {
+		rightBearing = 0;
+	}
+}
+
+// We always calculate the right bearing right before it is needed.
+// So we don't need caching / optimizations referred to delayed right bearing calculations.
+
+//static const QFixed RightBearingNotCalculated;
+
+//inline void resetRightBearing()
+//{
+//	rightBearing = RightBearingNotCalculated;
+//}
+
+// We express the negative right bearing as an absolute number
+// so that it can be applied to the width using addition.
+QFixed LineBreakHelper::negativeRightBearing() const {
+	//if (rightBearing == RightBearingNotCalculated)
+	//	return QFixed(0);
+
+	return qAbs(rightBearing);
+}
+
 QString DebugCurrentParsingString, DebugCurrentParsingPart;
 int DebugCurrentParsingFrom = 0;
 int DebugCurrentParsingLength = 0;
 
-static inline void addNextCluster(int &pos, int end, ScriptLine &line, int &glyphCount,
-	const QScriptItem &current, const unsigned short *logClusters,
-	const QGlyphLayout &glyphs)
-{
+void addNextCluster(
+		int &pos,
+		int end,
+		ScriptLine &line,
+		int &glyphCount,
+		const QScriptItem &current,
+		const unsigned short *logClusters,
+		const QGlyphLayout &glyphs) {
 	int glyphPosition = logClusters[pos];
 	do { // got to the first next cluster
 		++pos;
@@ -142,7 +153,8 @@ static inline void addNextCluster(int &pos, int end, ScriptLine &line, int &glyp
 		if (!glyphs.attributes[glyphPosition].dontPrint)
 			line.textWidth += glyphs.advances[glyphPosition];
 		++glyphPosition;
-	} while (glyphPosition < current.num_glyphs && !glyphs.attributes[glyphPosition].clusterStart);
+	} while (glyphPosition < current.num_glyphs
+		&& !glyphs.attributes[glyphPosition].clusterStart);
 
 	if (!((pos == end && glyphPosition == current.num_glyphs) || logClusters[pos] == glyphPosition)) {
 		auto str = QStringList();
@@ -153,7 +165,8 @@ static inline void addNextCluster(int &pos, int end, ScriptLine &line, int &glyp
 		base::Integration::Instance().logAssertionViolation(QString("pos: %1, end: %2, glyphPosition: %3, glyphCount: %4, lineLength: %5, num_glyphs: %6, logClusters[0..pos]: %7").arg(pos).arg(end).arg(glyphPosition).arg(glyphCount).arg(line.length).arg(current.num_glyphs).arg(str.join(",")));
 		Unexpected("Values in addNextCluster()");
 	}
-	Q_ASSERT((pos == end && glyphPosition == current.num_glyphs) || logClusters[pos] == glyphPosition);
+	Q_ASSERT((pos == end && glyphPosition == current.num_glyphs)
+		|| logClusters[pos] == glyphPosition);
 
 	++glyphCount;
 }
@@ -162,146 +175,16 @@ static inline void addNextCluster(int &pos, int end, ScriptLine &line, int &glyp
 
 class BlockParser {
 public:
-
-	BlockParser(QTextEngine *e, TextBlock *b, QFixed minResizeWidth, int32 blockFrom, const QString &str)
-		: block(b), eng(e), str(str) {
-		parseWords(minResizeWidth, blockFrom);
-	}
-
-	void parseWords(QFixed minResizeWidth, int32 blockFrom) {
-		LineBreakHelper lbh;
-
-		// Helper for debugging crashes in text processing.
-		//
-		//		auto debugChars = QString();
-		//		debugChars.reserve(str.size() * 7);
-		//		for (const auto ch : str) {
-		//			debugChars.append(
-		//				"0x").append(
-		//				QString::number(ch.unicode(), 16).toUpper()).append(
-		//				' ');
-		//		}
-		//		LOG(("Text: %1, chars: %2").arg(str).arg(debugChars));
-
-		int item = -1;
-		int newItem = eng->findItem(0);
-
-		style::align alignment = eng->option.alignment();
-
-		const QCharAttributes *attributes = eng->attributes();
-		if (!attributes)
-			return;
-		int end = 0;
-		lbh.logClusters = eng->layoutData->logClustersPtr;
-
-		block->_words.clear();
-
-		int wordStart = lbh.currentPosition;
-
-		bool addingEachGrapheme = false;
-		int lastGraphemeBoundaryPosition = -1;
-		ScriptLine lastGraphemeBoundaryLine;
-
-		while (newItem < eng->layoutData->items.size()) {
-			if (newItem != item) {
-				item = newItem;
-				const QScriptItem &current = eng->layoutData->items[item];
-				if (!current.num_glyphs) {
-					eng->shape(item);
-					attributes = eng->attributes();
-					if (!attributes)
-						return;
-					lbh.logClusters = eng->layoutData->logClustersPtr;
-				}
-				lbh.currentPosition = current.position;
-				end = current.position + eng->length(item);
-				lbh.glyphs = eng->shapedGlyphs(&current);
-				QFontEngine *fontEngine = eng->fontEngine(current);
-				if (lbh.fontEngine != fontEngine) {
-					lbh.fontEngine = fontEngine;
-				}
-			}
-			const QScriptItem &current = eng->layoutData->items[item];
-
-			if (attributes[lbh.currentPosition].whiteSpace) {
-				while (lbh.currentPosition < end && attributes[lbh.currentPosition].whiteSpace)
-					addNextCluster(lbh.currentPosition, end, lbh.spaceData, lbh.glyphCount,
-						current, lbh.logClusters, lbh.glyphs);
-
-				if (block->_words.isEmpty()) {
-					block->_words.push_back(TextWord(wordStart + blockFrom, lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
-				}
-				block->_words.back().add_rpadding(lbh.spaceData.textWidth);
-				block->_width += lbh.spaceData.textWidth;
-				lbh.spaceData.length = 0;
-				lbh.spaceData.textWidth = 0;
-
-				wordStart = lbh.currentPosition;
-
-				addingEachGrapheme = false;
-				lastGraphemeBoundaryPosition = -1;
-				lastGraphemeBoundaryLine = ScriptLine();
-			} else {
-				do {
-					addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount,
-						current, lbh.logClusters, lbh.glyphs);
-
-					if (lbh.currentPosition >= eng->layoutData->string.length()
-						|| attributes[lbh.currentPosition].whiteSpace
-						|| isLineBreak(attributes, lbh.currentPosition)) {
-						lbh.calculateRightBearing();
-						block->_words.push_back(TextWord(wordStart + blockFrom, lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
-						block->_width += lbh.tmpData.textWidth;
-						lbh.tmpData.textWidth = 0;
-						lbh.tmpData.length = 0;
-						wordStart = lbh.currentPosition;
-						break;
-					} else if (attributes[lbh.currentPosition].graphemeBoundary) {
-						if (!addingEachGrapheme && lbh.tmpData.textWidth > minResizeWidth) {
-							if (lastGraphemeBoundaryPosition >= 0) {
-								lbh.calculateRightBearingForPreviousGlyph();
-								block->_words.push_back(TextWord(wordStart + blockFrom, -lastGraphemeBoundaryLine.textWidth, -lbh.negativeRightBearing()));
-								block->_width += lastGraphemeBoundaryLine.textWidth;
-								lbh.tmpData.textWidth -= lastGraphemeBoundaryLine.textWidth;
-								lbh.tmpData.length -= lastGraphemeBoundaryLine.length;
-								wordStart = lastGraphemeBoundaryPosition;
-							}
-							addingEachGrapheme = true;
-						}
-						if (addingEachGrapheme) {
-							lbh.calculateRightBearing();
-							block->_words.push_back(TextWord(wordStart + blockFrom, -lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
-							block->_width += lbh.tmpData.textWidth;
-							lbh.tmpData.textWidth = 0;
-							lbh.tmpData.length = 0;
-							wordStart = lbh.currentPosition;
-						} else {
-							lastGraphemeBoundaryPosition = lbh.currentPosition;
-							lastGraphemeBoundaryLine = lbh.tmpData;
-							lbh.saveCurrentGlyph();
-						}
-					}
-				} while (lbh.currentPosition < end);
-			}
-			if (lbh.currentPosition == end)
-				newItem = item + 1;
-		}
-		if (!block->_words.isEmpty()) {
-			block->_rpadding = block->_words.back().f_rpadding();
-			block->_width -= block->_rpadding;
-			block->_words.squeeze();
-		}
-	}
-
-	bool isLineBreak(const QCharAttributes *attributes, int32 index) {
-		bool lineBreak = attributes[index].lineBreak;
-		if (lineBreak && block->lnkIndex() > 0 && index > 0 && str.at(index - 1) == '/') {
-			return false; // don't break after / in links
-		}
-		return lineBreak;
-	}
+	BlockParser(
+		QTextEngine *e,
+		TextBlock *b,
+		QFixed minResizeWidth,
+		int blockFrom,
+		const QString &str);
 
 private:
+	void parseWords(QFixed minResizeWidth, int blockFrom);
+	bool isLineBreak(const QCharAttributes *attributes, int index);
 
 	TextBlock *block;
 	QTextEngine *eng;
@@ -309,11 +192,171 @@ private:
 
 };
 
-QFixed AbstractBlock::f_rbearing() const {
-	return (type() == TextBlockTText) ? static_cast<const TextBlock*>(this)->real_f_rbearing() : 0;
+BlockParser::BlockParser(
+	QTextEngine *e,
+	TextBlock *b,
+	QFixed minResizeWidth,
+	int blockFrom,
+	const QString &str)
+: block(b)
+, eng(e)
+, str(str) {
+	parseWords(minResizeWidth, blockFrom);
 }
 
-TextBlock::TextBlock(const style::font &font, const QString &str, QFixed minResizeWidth, uint16 from, uint16 length, uchar flags, uint16 lnkIndex) : AbstractBlock(font, str, from, length, flags, lnkIndex) {
+void BlockParser::parseWords(QFixed minResizeWidth, int blockFrom) {
+	LineBreakHelper lbh;
+
+	// Helper for debugging crashes in text processing.
+	//
+	//		auto debugChars = QString();
+	//		debugChars.reserve(str.size() * 7);
+	//		for (const auto ch : str) {
+	//			debugChars.append(
+	//				"0x").append(
+	//				QString::number(ch.unicode(), 16).toUpper()).append(
+	//				' ');
+	//		}
+	//		LOG(("Text: %1, chars: %2").arg(str).arg(debugChars));
+
+	int item = -1;
+	int newItem = eng->findItem(0);
+
+	style::align alignment = eng->option.alignment();
+
+	const QCharAttributes *attributes = eng->attributes();
+	if (!attributes)
+		return;
+	int end = 0;
+	lbh.logClusters = eng->layoutData->logClustersPtr;
+
+	block->_words.clear();
+
+	int wordStart = lbh.currentPosition;
+
+	bool addingEachGrapheme = false;
+	int lastGraphemeBoundaryPosition = -1;
+	ScriptLine lastGraphemeBoundaryLine;
+
+	while (newItem < eng->layoutData->items.size()) {
+		if (newItem != item) {
+			item = newItem;
+			const QScriptItem &current = eng->layoutData->items[item];
+			if (!current.num_glyphs) {
+				eng->shape(item);
+				attributes = eng->attributes();
+				if (!attributes)
+					return;
+				lbh.logClusters = eng->layoutData->logClustersPtr;
+			}
+			lbh.currentPosition = current.position;
+			end = current.position + eng->length(item);
+			lbh.glyphs = eng->shapedGlyphs(&current);
+			QFontEngine *fontEngine = eng->fontEngine(current);
+			if (lbh.fontEngine != fontEngine) {
+				lbh.fontEngine = fontEngine;
+			}
+		}
+		const QScriptItem &current = eng->layoutData->items[item];
+
+		if (attributes[lbh.currentPosition].whiteSpace) {
+			while (lbh.currentPosition < end && attributes[lbh.currentPosition].whiteSpace)
+				addNextCluster(lbh.currentPosition, end, lbh.spaceData, lbh.glyphCount,
+					current, lbh.logClusters, lbh.glyphs);
+
+			if (block->_words.isEmpty()) {
+				block->_words.push_back(TextWord(wordStart + blockFrom, lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
+			}
+			block->_words.back().add_rpadding(lbh.spaceData.textWidth);
+			block->_width += lbh.spaceData.textWidth;
+			lbh.spaceData.length = 0;
+			lbh.spaceData.textWidth = 0;
+
+			wordStart = lbh.currentPosition;
+
+			addingEachGrapheme = false;
+			lastGraphemeBoundaryPosition = -1;
+			lastGraphemeBoundaryLine = ScriptLine();
+		} else {
+			do {
+				addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount,
+					current, lbh.logClusters, lbh.glyphs);
+
+				if (lbh.currentPosition >= eng->layoutData->string.length()
+					|| attributes[lbh.currentPosition].whiteSpace
+					|| isLineBreak(attributes, lbh.currentPosition)) {
+					lbh.calculateRightBearing();
+					block->_words.push_back(TextWord(wordStart + blockFrom, lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
+					block->_width += lbh.tmpData.textWidth;
+					lbh.tmpData.textWidth = 0;
+					lbh.tmpData.length = 0;
+					wordStart = lbh.currentPosition;
+					break;
+				} else if (attributes[lbh.currentPosition].graphemeBoundary) {
+					if (!addingEachGrapheme && lbh.tmpData.textWidth > minResizeWidth) {
+						if (lastGraphemeBoundaryPosition >= 0) {
+							lbh.calculateRightBearingForPreviousGlyph();
+							block->_words.push_back(TextWord(wordStart + blockFrom, -lastGraphemeBoundaryLine.textWidth, -lbh.negativeRightBearing()));
+							block->_width += lastGraphemeBoundaryLine.textWidth;
+							lbh.tmpData.textWidth -= lastGraphemeBoundaryLine.textWidth;
+							lbh.tmpData.length -= lastGraphemeBoundaryLine.length;
+							wordStart = lastGraphemeBoundaryPosition;
+						}
+						addingEachGrapheme = true;
+					}
+					if (addingEachGrapheme) {
+						lbh.calculateRightBearing();
+						block->_words.push_back(TextWord(wordStart + blockFrom, -lbh.tmpData.textWidth, -lbh.negativeRightBearing()));
+						block->_width += lbh.tmpData.textWidth;
+						lbh.tmpData.textWidth = 0;
+						lbh.tmpData.length = 0;
+						wordStart = lbh.currentPosition;
+					} else {
+						lastGraphemeBoundaryPosition = lbh.currentPosition;
+						lastGraphemeBoundaryLine = lbh.tmpData;
+						lbh.saveCurrentGlyph();
+					}
+				}
+			} while (lbh.currentPosition < end);
+		}
+		if (lbh.currentPosition == end)
+			newItem = item + 1;
+	}
+	if (!block->_words.isEmpty()) {
+		block->_rpadding = block->_words.back().f_rpadding();
+		block->_width -= block->_rpadding;
+		block->_words.squeeze();
+	}
+}
+
+bool BlockParser::isLineBreak(
+		const QCharAttributes *attributes,
+		int index) {
+	bool lineBreak = attributes[index].lineBreak;
+	if (lineBreak
+		&& block->lnkIndex() > 0
+		&& index > 0
+		&& str.at(index - 1) == '/') {
+		return false; // don't break after / in links
+	}
+	return lineBreak;
+}
+
+QFixed AbstractBlock::f_rbearing() const {
+	return (type() == TextBlockTText)
+		? static_cast<const TextBlock*>(this)->real_f_rbearing()
+		: 0;
+}
+
+TextBlock::TextBlock(
+	const style::font &font,
+	const QString &str,
+	QFixed minResizeWidth,
+	uint16 from,
+	uint16 length,
+	uchar flags,
+	uint16 lnkIndex)
+: AbstractBlock(font, str, from, length, flags, lnkIndex) {
 	_flags |= ((TextBlockTText & 0x0F) << 8);
 	if (length) {
 		style::font blockFont = font;
@@ -347,11 +390,18 @@ TextBlock::TextBlock(const style::font &font, const QString &str, QFixed minResi
 	}
 }
 
-EmojiBlock::EmojiBlock(const style::font &font, const QString &str, uint16 from, uint16 length, uchar flags, uint16 lnkIndex, EmojiPtr emoji) : AbstractBlock(font, str, from, length, flags, lnkIndex)
-, emoji(emoji) {
+EmojiBlock::EmojiBlock(
+	const style::font &font,
+	const QString &str,
+	uint16 from,
+	uint16 length,
+	uchar flags,
+	uint16 lnkIndex,
+	EmojiPtr emoji)
+: AbstractBlock(font, str, from, length, flags, lnkIndex)
+, _emoji(emoji) {
 	_flags |= ((TextBlockTEmoji & 0x0F) << 8);
 	_width = int(st::emojiSize + 2 * st::emojiPadding);
-
 	_rpadding = 0;
 	for (auto i = length; i != 0;) {
 		auto ch = str[_from + (--i)];
@@ -363,10 +413,5 @@ EmojiBlock::EmojiBlock(const style::font &font, const QString &str, uint16 from,
 	}
 }
 
-SkipBlock::SkipBlock(const style::font &font, const QString &str, uint16 from, int32 w, int32 h, uint16 lnkIndex) : AbstractBlock(font, str, from, 1, 0, lnkIndex), _height(h) {
-	_flags |= ((TextBlockTSkip & 0x0F) << 8);
-	_width = w;
-}
-
 } // namespace Text
 } // namespace Ui
diff --git a/ui/text/text_block.h b/ui/text/text_block.h
index 0bd5953..5f99108 100644
--- a/ui/text/text_block.h
+++ b/ui/text/text_block.h
@@ -34,16 +34,13 @@ enum TextBlockFlags {
 
 class AbstractBlock {
 public:
-	AbstractBlock(const style::font &font, const QString &str, uint16 from, uint16 length, uchar flags, uint16 lnkIndex) : _from(from), _flags((flags & 0xFF) | ((lnkIndex & 0xFFFF) << 12)) {
-	}
-
 	uint16 from() const {
 		return _from;
 	}
-	int32 width() const {
+	int width() const {
 		return _width.toInt();
 	}
-	int32 rpadding() const {
+	int rpadding() const {
 		return _rpadding.toInt();
 	}
 	QFixed f_width() const {
@@ -70,11 +67,18 @@ public:
 		return (_flags & 0xFF);
 	}
 
-	virtual std::unique_ptr<AbstractBlock> clone() const = 0;
-	virtual ~AbstractBlock() {
+protected:
+	AbstractBlock(
+		const style::font &font,
+		const QString &str,
+		uint16 from,
+		uint16 length,
+		uchar flags,
+		uint16 lnkIndex)
+	: _from(from)
+	, _flags((flags & 0xFF) | ((lnkIndex & 0xFFFF) << 12)) {
 	}
 
-protected:
 	uint16 _from = 0;
 
 	uint32 _flags = 0; // 4 bits empty, 16 bits lnkIndex, 4 bits type, 8 bits flags
@@ -90,9 +94,16 @@ protected:
 
 };
 
-class NewlineBlock : public AbstractBlock {
+class NewlineBlock final : public AbstractBlock {
 public:
-	NewlineBlock(const style::font &font, const QString &str, uint16 from, uint16 length, uchar flags, uint16 lnkIndex) : AbstractBlock(font, str, from, length, flags, lnkIndex), _nextDir(Qt::LayoutDirectionAuto) {
+	NewlineBlock(
+		const style::font &font,
+		const QString &str,
+		uint16 from,
+		uint16 length,
+		uchar flags,
+		uint16 lnkIndex)
+	: AbstractBlock(font, str, from, length, flags, lnkIndex) {
 		_flags |= ((TextBlockTNewline & 0x0F) << 8);
 	}
 
@@ -100,12 +111,8 @@ public:
 		return _nextDir;
 	}
 
-	std::unique_ptr<AbstractBlock> clone() const override {
-		return std::make_unique<NewlineBlock>(*this);
-	}
-
 private:
-	Qt::LayoutDirection _nextDir;
+	Qt::LayoutDirection _nextDir = Qt::LayoutDirectionAuto;
 
 	friend class String;
 	friend class Parser;
@@ -113,14 +120,16 @@ private:
 
 };
 
-class TextWord {
+class TextWord final {
 public:
 	TextWord() = default;
 	TextWord(uint16 from, QFixed width, QFixed rbearing, QFixed rpadding = 0)
-		: _from(from)
-		, _width(width)
-		, _rpadding(rpadding)
-		, _rbearing(rbearing.value() > 0x7FFF ? 0x7FFF : (rbearing.value() < -0x7FFF ? -0x7FFF : rbearing.value())) {
+	: _from(from)
+	, _rbearing((rbearing.value() > 0x7FFF)
+		? 0x7FFF
+		: (rbearing.value() < -0x7FFF ? -0x7FFF : rbearing.value()))
+	, _width(width)
+	, _rpadding(rpadding) {
 	}
 	uint16 from() const {
 		return _from;
@@ -140,45 +149,50 @@ public:
 
 private:
 	uint16 _from = 0;
-	QFixed _width, _rpadding;
 	int16 _rbearing = 0;
+	QFixed _width, _rpadding;
 
 };
 
-class TextBlock : public AbstractBlock {
+class TextBlock final : public AbstractBlock {
 public:
-	TextBlock(const style::font &font, const QString &str, QFixed minResizeWidth, uint16 from, uint16 length, uchar flags, uint16 lnkIndex);
-
-	std::unique_ptr<AbstractBlock> clone() const override {
-		return std::make_unique<TextBlock>(*this);
-	}
+	TextBlock(
+		const style::font &font,
+		const QString &str,
+		QFixed minResizeWidth,
+		uint16 from,
+		uint16 length,
+		uchar flags,
+		uint16 lnkIndex);
 
 private:
-	friend class AbstractBlock;
 	QFixed real_f_rbearing() const {
 		return _words.isEmpty() ? 0 : _words.back().f_rbearing();
 	}
 
-	using TextWords = QVector<TextWord>;
-	TextWords _words;
+	QVector<TextWord> _words;
 
 	friend class String;
 	friend class Parser;
 	friend class Renderer;
 	friend class BlockParser;
+	friend class AbstractBlock;
 
 };
 
-class EmojiBlock : public AbstractBlock {
+class EmojiBlock final : public AbstractBlock {
 public:
-	EmojiBlock(const style::font &font, const QString &str, uint16 from, uint16 length, uchar flags, uint16 lnkIndex, EmojiPtr emoji);
-
-	std::unique_ptr<AbstractBlock> clone() const override {
-		return std::make_unique<EmojiBlock>(*this);
-	}
+	EmojiBlock(
+		const style::font &font,
+		const QString &str,
+		uint16 from,
+		uint16 length,
+		uchar flags,
+		uint16 lnkIndex,
+		EmojiPtr emoji);
 
 private:
-	EmojiPtr emoji = nullptr;
+	EmojiPtr _emoji = nullptr;
 
 	friend class String;
 	friend class Parser;
@@ -186,20 +200,27 @@ private:
 
 };
 
-class SkipBlock : public AbstractBlock {
+class SkipBlock final : public AbstractBlock {
 public:
-	SkipBlock(const style::font &font, const QString &str, uint16 from, int32 w, int32 h, uint16 lnkIndex);
+	SkipBlock(
+		const style::font &font,
+		const QString &str,
+		uint16 from,
+		int32 w,
+		int32 h,
+		uint16 lnkIndex)
+	: AbstractBlock(font, str, from, 1, 0, lnkIndex)
+	, _height(h) {
+		_flags |= ((TextBlockTSkip & 0x0F) << 8);
+		_width = w;
+	}
 
-	int32 height() const {
+	int height() const {
 		return _height;
 	}
 
-	std::unique_ptr<AbstractBlock> clone() const override {
-		return std::make_unique<SkipBlock>(*this);
-	}
-
 private:
-	int32 _height;
+	int _height = 0;
 
 	friend class String;
 	friend class Parser;
@@ -207,5 +228,235 @@ private:
 
 };
 
+class Block final {
+public:
+	Block() {
+		Unexpected("Should not be called.");
+	}
+	Block(const Block &other) {
+		switch (other->type()) {
+		case TextBlockTNewline:
+			emplace<NewlineBlock>(other.unsafe<NewlineBlock>());
+			break;
+		case TextBlockTText:
+			emplace<TextBlock>(other.unsafe<TextBlock>());
+			break;
+		case TextBlockTEmoji:
+			emplace<EmojiBlock>(other.unsafe<EmojiBlock>());
+			break;
+		case TextBlockTSkip:
+			emplace<SkipBlock>(other.unsafe<SkipBlock>());
+			break;
+		default:
+			Unexpected("Bad text block type in Block(const Block&).");
+		}
+	}
+	Block(Block &&other) {
+		switch (other->type()) {
+		case TextBlockTNewline:
+			emplace<NewlineBlock>(std::move(other.unsafe<NewlineBlock>()));
+			break;
+		case TextBlockTText:
+			emplace<TextBlock>(std::move(other.unsafe<TextBlock>()));
+			break;
+		case TextBlockTEmoji:
+			emplace<EmojiBlock>(std::move(other.unsafe<EmojiBlock>()));
+			break;
+		case TextBlockTSkip:
+			emplace<SkipBlock>(std::move(other.unsafe<SkipBlock>()));
+			break;
+		default:
+			Unexpected("Bad text block type in Block(Block&&).");
+		}
+	}
+	Block &operator=(const Block &other) {
+		if (&other == this) {
+			return *this;
+		}
+		destroy();
+		switch (other->type()) {
+		case TextBlockTNewline:
+			emplace<NewlineBlock>(other.unsafe<NewlineBlock>());
+			break;
+		case TextBlockTText:
+			emplace<TextBlock>(other.unsafe<TextBlock>());
+			break;
+		case TextBlockTEmoji:
+			emplace<EmojiBlock>(other.unsafe<EmojiBlock>());
+			break;
+		case TextBlockTSkip:
+			emplace<SkipBlock>(other.unsafe<SkipBlock>());
+			break;
+		default:
+			Unexpected("Bad text block type in operator=(const Block&).");
+		}
+		return *this;
+	}
+	Block &operator=(Block &&other) {
+		if (&other == this) {
+			return *this;
+		}
+		destroy();
+		switch (other->type()) {
+		case TextBlockTNewline:
+			emplace<NewlineBlock>(std::move(other.unsafe<NewlineBlock>()));
+			break;
+		case TextBlockTText:
+			emplace<TextBlock>(std::move(other.unsafe<TextBlock>()));
+			break;
+		case TextBlockTEmoji:
+			emplace<EmojiBlock>(std::move(other.unsafe<EmojiBlock>()));
+			break;
+		case TextBlockTSkip:
+			emplace<SkipBlock>(std::move(other.unsafe<SkipBlock>()));
+			break;
+		default:
+			Unexpected("Bad text block type in operator=(Block&&).");
+		}
+		return *this;
+	}
+	~Block() {
+		destroy();
+	}
+
+	[[nodiscard]] static Block Newline(
+			const style::font &font,
+			const QString &str,
+			uint16 from,
+			uint16 length,
+			uchar flags,
+			uint16 lnkIndex) {
+		return New<NewlineBlock>(font, str, from, length, flags, lnkIndex);
+	}
+
+	[[nodiscard]] static Block Text(
+			const style::font &font,
+			const QString &str,
+			QFixed minResizeWidth,
+			uint16 from,
+			uint16 length,
+			uchar flags,
+			uint16 lnkIndex) {
+		return New<TextBlock>(
+			font,
+			str,
+			minResizeWidth,
+			from,
+			length,
+			flags,
+			lnkIndex);
+	}
+
+	[[nodiscard]] static Block Emoji(
+			const style::font &font,
+			const QString &str,
+			uint16 from,
+			uint16 length,
+			uchar flags,
+			uint16 lnkIndex,
+			EmojiPtr emoji) {
+		return New<EmojiBlock>(
+			font,
+			str,
+			from,
+			length,
+			flags,
+			lnkIndex,
+			emoji);
+	}
+
+	[[nodiscard]] static Block Skip(
+			const style::font &font,
+			const QString &str,
+			uint16 from,
+			int32 w,
+			int32 h,
+			uint16 lnkIndex) {
+		return New<SkipBlock>(font, str, from, w, h, lnkIndex);
+	}
+
+	template <typename FinalBlock>
+	[[nodiscard]] FinalBlock &unsafe() {
+		return *reinterpret_cast<FinalBlock*>(&_data);
+	}
+
+	template <typename FinalBlock>
+	[[nodiscard]] const FinalBlock &unsafe() const {
+		return *reinterpret_cast<const FinalBlock*>(&_data);
+	}
+
+	[[nodiscard]] AbstractBlock *get() {
+		return &unsafe<AbstractBlock>();
+	}
+
+	[[nodiscard]] const AbstractBlock *get() const {
+		return &unsafe<AbstractBlock>();
+	}
+
+	[[nodiscard]] AbstractBlock *operator->() {
+		return get();
+	}
+
+	[[nodiscard]] const AbstractBlock *operator->() const {
+		return get();
+	}
+
+	[[nodiscard]] AbstractBlock &operator*() {
+		return *get();
+	}
+
+	[[nodiscard]] const AbstractBlock &operator*() const {
+		return *get();
+	}
+
+private:
+	struct Tag {
+	};
+
+	explicit Block(const Tag &) {
+	}
+
+	template <typename FinalType, typename ...Args>
+	[[nodiscard]] static Block New(Args &&...args) {
+		auto result = Block(Tag{});
+		result.emplace<FinalType>(std::forward<Args>(args)...);
+		return result;
+	}
+
+	template <typename FinalType, typename ...Args>
+	void emplace(Args &&...args) {
+		new (&_data) FinalType(std::forward<Args>(args)...);
+	}
+
+	void destroy() {
+		switch (get()->type()) {
+		case TextBlockTNewline:
+			unsafe<NewlineBlock>().~NewlineBlock();
+			break;
+		case TextBlockTText:
+			unsafe<TextBlock>().~TextBlock();
+			break;
+		case TextBlockTEmoji:
+			unsafe<EmojiBlock>().~EmojiBlock();
+			break;
+		case TextBlockTSkip:
+			unsafe<SkipBlock>().~SkipBlock();
+			break;
+		default:
+			Unexpected("Bad text block type in Block(Block&&).");
+		}
+	}
+
+	static_assert(sizeof(NewlineBlock) <= sizeof(TextBlock));
+	static_assert(alignof(NewlineBlock) <= alignof(void*));
+	static_assert(sizeof(EmojiBlock) <= sizeof(TextBlock));
+	static_assert(alignof(EmojiBlock) <= alignof(void*));
+	static_assert(sizeof(SkipBlock) <= sizeof(TextBlock));
+	static_assert(alignof(SkipBlock) <= alignof(void*));
+
+	std::aligned_storage_t<sizeof(TextBlock), alignof(void*)> _data;
+
+};
+
 } // namespace Text
 } // namespace Ui
diff --git a/ui/text/text_entity.cpp b/ui/text/text_entity.cpp
index 995c72d..087fa77 100644
--- a/ui/text/text_entity.cpp
+++ b/ui/text/text_entity.cpp
@@ -21,6 +21,8 @@
 namespace TextUtilities {
 namespace {
 
+using namespace Ui::Text;
+
 QString ExpressionMailNameAtEnd() {
 	// Matches email first part (before '@') at the end of the string.
 	// First we find a domain without protocol (like "gmail.com"), then
@@ -1189,6 +1191,18 @@ std::unique_ptr<QMimeData> MimeDataFromText(
 	return result;
 }
 
+bool IsSentencePartEnd(QChar ch) {
+	return (ch == ',')
+		|| (ch == ':')
+		|| (ch == ';');
+}
+
+bool IsSentenceEnd(QChar ch) {
+	return (ch == '.')
+		|| (ch == '?')
+		|| (ch == '!');
+}
+
 } // namespace
 
 const QRegularExpression &RegExpMailNameAtEnd() {
@@ -1303,10 +1317,10 @@ QString SingleLine(const QString &text) {
 	auto s = text.unicode(), ch = s, e = text.unicode() + text.size();
 
 	// Trim.
-	while (s < e && chIsTrimmed(*s)) {
+	while (s < e && IsTrimmed(*s)) {
 		++s;
 	}
-	while (s < e && chIsTrimmed(*(e - 1))) {
+	while (s < e && IsTrimmed(*(e - 1))) {
 		--e;
 	}
 	if (e - s != text.size()) {
@@ -1314,7 +1328,7 @@ QString SingleLine(const QString &text) {
 	}
 
 	for (auto ch = s; ch != e; ++ch) {
-		if (chIsNewline(*ch) || *ch == TextCommand) {
+		if (IsNewline(*ch) || *ch == TextCommand) {
 			result[int(ch - s)] = QChar::Space;
 		}
 	}
@@ -1336,7 +1350,7 @@ QString RemoveAccents(const QString &text) {
 			if (copying) result[i] = *ch;
 			continue;
 		}
-		if (chIsDiac(*ch)) {
+		if (IsDiac(*ch)) {
 			copying = true;
 			--i;
 			continue;
@@ -1434,14 +1448,14 @@ bool CutPart(TextWithEntities &sending, TextWithEntities &left, int32 limit) {
 			if (inEntity && !canBreakEntity) {
 				markGoodAsLevel(0);
 			} else {
-				if (chIsNewline(*ch)) {
+				if (IsNewline(*ch)) {
 					if (inEntity) {
-						if (ch + 1 < end && chIsNewline(*(ch + 1))) {
+						if (ch + 1 < end && IsNewline(*(ch + 1))) {
 							markGoodAsLevel(12);
 						} else {
 							markGoodAsLevel(11);
 						}
-					} else if (ch + 1 < end && chIsNewline(*(ch + 1))) {
+					} else if (ch + 1 < end && IsNewline(*(ch + 1))) {
 						markGoodAsLevel(15);
 					} else if (currentEntity < entityCount && ch + 1 == start + left.entities[currentEntity].offset() && left.entities[currentEntity].type() == EntityType::Pre) {
 						markGoodAsLevel(14);
@@ -1450,15 +1464,15 @@ bool CutPart(TextWithEntities &sending, TextWithEntities &left, int32 limit) {
 					} else {
 						markGoodAsLevel(13);
 					}
-				} else if (chIsSpace(*ch)) {
-					if (chIsSentenceEnd(*(ch - 1))) {
+				} else if (IsSpace(*ch)) {
+					if (IsSentenceEnd(*(ch - 1))) {
 						markGoodAsLevel(9 + noEntityLevel);
-					} else if (chIsSentencePartEnd(*(ch - 1))) {
+					} else if (IsSentencePartEnd(*(ch - 1))) {
 						markGoodAsLevel(7 + noEntityLevel);
 					} else {
 						markGoodAsLevel(5 + noEntityLevel);
 					}
-				} else if (chIsWordSeparator(*(ch - 1))) {
+				} else if (IsWordSeparator(*(ch - 1))) {
 					markGoodAsLevel(3 + noEntityLevel);
 				} else {
 					markGoodAsLevel(1 + noEntityLevel);
@@ -1761,13 +1775,14 @@ void ParseEntities(TextWithEntities &result, int32 flags, bool rich) {
 				const QChar *domainEnd = start + mDomain.capturedEnd(), *p = domainEnd;
 				for (; p < end; ++p) {
 					QChar ch(*p);
-					if (chIsLinkEnd(ch)) break; // link finished
-					if (chIsAlmostLinkEnd(ch)) {
+					if (IsLinkEnd(ch)) {
+						break; // link finished
+					} else if (IsAlmostLinkEnd(ch)) {
 						const QChar *endTest = p + 1;
-						while (endTest < end && chIsAlmostLinkEnd(*endTest)) {
+						while (endTest < end && IsAlmostLinkEnd(*endTest)) {
 							++endTest;
 						}
-						if (endTest >= end || chIsLinkEnd(*endTest)) {
+						if (endTest >= end || IsLinkEnd(*endTest)) {
 							break; // link finished at p
 						}
 						p = endTest;
@@ -1879,7 +1894,7 @@ void ApplyServerCleaning(TextWithEntities &result) {
 		if (ch->unicode() == '\r') {
 			MovePartAndGoForward(result, to, from, (ch - start) - from);
 			++from;
-		} else if (chReplacedBySpace(*ch)) {
+		} else if (IsReplacedBySpace(*ch)) {
 			*ch = ' ';
 		}
 	}
@@ -1893,7 +1908,7 @@ void Trim(TextWithEntities &result) {
 	// right trim
 	for (auto s = result.text.data(), e = s + result.text.size(), ch = e; ch != s;) {
 		--ch;
-		if (!chIsTrimmed(*ch)) {
+		if (!IsTrimmed(*ch)) {
 			if (ch + 1 < e) {
 				auto l = ch + 1 - s;
 				for (auto &entity : result.entities) {
@@ -1916,7 +1931,7 @@ void Trim(TextWithEntities &result) {
 
 	// left trim
 	for (auto s = result.text.data(), ch = s, e = s + result.text.size(); ch != e; ++ch) {
-		if (!chIsTrimmed(*ch) || (ch - s) == firstMonospaceOffset) {
+		if (!IsTrimmed(*ch) || (ch - s) == firstMonospaceOffset) {
 			if (ch > s) {
 				auto l = ch - s;
 				for (auto &entity : result.entities) {
diff --git a/ui/widgets/input_fields.cpp b/ui/widgets/input_fields.cpp
index 5041f83..a5aae43 100644
--- a/ui/widgets/input_fields.cpp
+++ b/ui/widgets/input_fields.cpp
@@ -107,12 +107,12 @@ QString GetFullSimpleTextTag(const TextWithTags &textWithTags) {
 	auto from = 0;
 	auto till = int(text.size());
 	for (; from != till; ++from) {
-		if (!IsNewline(text[from]) && !chIsSpace(text[from])) {
+		if (!IsNewline(text[from]) && !Text::IsSpace(text[from])) {
 			break;
 		}
 	}
 	while (till != from) {
-		if (!IsNewline(text[till - 1]) && !chIsSpace(text[till - 1])) {
+		if (!IsNewline(text[till - 1]) && !Text::IsSpace(text[till - 1])) {
 			break;
 		}
 		--till;
@@ -3129,7 +3129,7 @@ bool InputField::commitMarkdownReplacement(
 			const auto ch = outer.at(check);
 			if (IsNewline(ch)) {
 				return check + 1;
-			} else if (!chIsSpace(ch)) {
+			} else if (!Text::IsSpace(ch)) {
 				break;
 			}
 		}