Beta version 1.4.4: Fix emoji cache.

- Interface scaling for large screens, up to 300%
(up to 150% for macOS retina screens).
- Updated emoji.

.appveyor/install.bat

@@ -56,10 +56,6 @@ GOTO:EOF
     call:logInfo "Build version: %BUILD_VERSION%"
     set TDESKTOP_BUILD_DEFINES=
 
-    echo %BUILD_VERSION% | findstr /C:"disable_autoupdate">nul && (
-        set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_AUTOUPDATE
-    )
-
     echo %BUILD_VERSION% | findstr /C:"disable_register_custom_scheme">nul && (
         set TDESKTOP_BUILD_DEFINES=%TDESKTOP_BUILD_DEFINES%,TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
     )

.github/CONTRIBUTING.md

@@ -33,7 +33,7 @@ environments.
 
 ## Pull upstream changes into your fork regularly
 
-Telegram Desktop is advancing quickly. It is therefore critical that you pull upstream changes into your fork on a regular basis. Nothing is worse than putting in a days of hard work into a pull request only to have it rejected because it has diverged too far from upstram.
+Telegram Desktop is advancing quickly. It is therefore critical that you pull upstream changes into your fork on a regular basis. Nothing is worse than putting in a days of hard work into a pull request only to have it rejected because it has diverged too far from upstream.
 
 To pull in upstream changes:
 

.github/ISSUE_TEMPLATE.md

@@ -22,8 +22,5 @@ Tell us what happens instead
 **Used theme**:
 
 <details><summary><b>Logs</b>:</summary>
-Insert logs here (if necessary)
-
-<!-- You can type `debugmode` in settings and then see ~/.TelegramDesktop/DebugLogs/log_...txt for log files.
-Type `debugmode` in settings again to disable logs. -->
+Insert log.txt here (if necessary)
 </details>

.gitignore

@@ -50,6 +50,15 @@ ipch/
 project.xcworkspace
 xcuserdata
 
+parts
+prime
+stage
+*.snap
+.snapcraft
+/snap/gui/*.png
+/snap/gui/*.desktop
+/snap/plugins/__pycache__
+
 /Telegram/*.user.*
 *.pro.user
 /Linux/

.gitmodules

@@ -13,3 +13,6 @@
 [submodule "Telegram/ThirdParty/crl"]
 	path = Telegram/ThirdParty/crl
 	url = https://github.com/telegramdesktop/crl.git
+[submodule "Telegram/ThirdParty/xxHash"]
+	path = Telegram/ThirdParty/xxHash
+	url = https://github.com/Cyan4973/xxHash.git

.travis.yml

@@ -10,7 +10,6 @@ cache:
 env:
   matrix:
    - BUILD_VERSION=""
-   - BUILD_VERSION="disable_autoupdate"
    - BUILD_VERSION="disable_register_custom_scheme"
    - BUILD_VERSION="disable_crash_reports"
    - BUILD_VERSION="disable_network_proxy"

.travis/build.sh

@@ -100,10 +100,6 @@ build() {
   fi
 
   # Configure the build
-  if [[ $BUILD_VERSION == *"disable_autoupdate"* ]]; then
-    GYP_DEFINES+=",TDESKTOP_DISABLE_AUTOUPDATE"
-  fi
-
   if [[ $BUILD_VERSION == *"disable_register_custom_scheme"* ]]; then
     GYP_DEFINES+=",TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME"
   fi
@@ -486,6 +482,9 @@ buildOpenAL() {
       -D CMAKE_INSTALL_PREFIX=$OPENAL_PATH \
       -D CMAKE_BUILD_TYPE=Release \
       -D LIBTYPE=STATIC \
+      -D ALSOFT_EXAMPLES=OFF \
+      -D ALSOFT_TESTS=OFF \
+      -D ALSOFT_UTILS=OFF \
       ..
   make $MAKE_ARGS
   sudo make install
@@ -582,10 +581,10 @@ buildCustomQt() {
   info_msg "Downloading and building patched qt"
 
   if [ -d "$EXTERNAL/qt${QT_VERSION}" ]; then
-    rm -rf "$EXTERNAL/qt${QT_VERSION}"
+    sudo rm -rf "$EXTERNAL/qt${QT_VERSION}"
   fi
   cd $QT_PATH
-  rm -rf *
+  sudo rm -rf *
 
   cd "$EXTERNAL"
   git clone git://code.qt.io/qt/qt5.git qt${QT_VERSION}
@@ -608,7 +607,7 @@ buildCustomQt() {
   ./configure -prefix $QT_PATH -release -opensource -confirm-license -qt-zlib \
               -qt-libpng -qt-libjpeg -qt-freetype -qt-harfbuzz -qt-pcre -qt-xcb \
               -qt-xkbcommon-x11 -no-opengl -no-gtkstyle -static \
-              -nomake examples -nomake tests \
+              -nomake examples -nomake tests -no-mirclient \
               -dbus-runtime -no-gstreamer -no-mtdev # <- Not sure about these
   make $MAKE_ARGS
   sudo make install

README.md

@@ -15,8 +15,9 @@ The source code is published under GPLv3 with OpenSSL exception, the license is
 * Windows XP - Windows 10 (**not** RT)
 * Mac OS X 10.8 - Mac OS X 10.11
 * Mac OS X 10.6 - Mac OS X 10.7 (separate build)
-* Ubuntu 12.04 - Ubuntu 16.04
-* Fedora 22 - Fedora 24
+* Ubuntu 12.04 - Ubuntu 18.04
+* Fedora 22 - Fedora 28
+* [Snappy](https://snapcraft.io/telegram-desktop)
 
 ## Third-party
 
@@ -39,6 +40,7 @@ The source code is published under GPLv3 with OpenSSL exception, the license is
 * Open Sans font ([Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html))
 * Emoji alpha codes ([MIT License](https://github.com/emojione/emojione/blob/master/extras/alpha-codes/LICENSE.md))
 * Catch test framework ([Boost License](https://github.com/philsquared/Catch/blob/master/LICENSE.txt))
+* xxHash ([BSD License](https://github.com/Cyan4973/xxHash/blob/dev/LICENSE))
 
 ## Build instructions
 

Telegram/Patches/gyp.diff

@@ -1,5 +1,5 @@
 diff --git a/pylib/gyp/generator/cmake.py b/pylib/gyp/generator/cmake.py
-index a2b9629..68d7020 100644
+index a2b9629..ac59461 100644
 --- a/pylib/gyp/generator/cmake.py
 +++ b/pylib/gyp/generator/cmake.py
 @@ -1070,6 +1070,23 @@ def WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
@@ -26,6 +26,43 @@ index a2b9629..68d7020 100644
    UnsetVariable(output, 'TOOLSET')
    UnsetVariable(output, 'TARGET')
  
+@@ -1112,6 +1129,8 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
+   SetVariable(output, 'configuration', config_to_use)
+ 
+   ar = None
++  ranlib = None
++  nm = None
+   cc = None
+   cxx = None
+ 
+@@ -1121,17 +1140,27 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
+   for key, value in make_global_settings:
+     if key == 'AR':
+       ar = os.path.join(build_to_top, value)
++    if key == 'RANLIB':
++      ranlib = os.path.join(build_to_top, value)
++    if key == 'NM':
++      nm = os.path.join(build_to_top, value)
+     if key == 'CC':
+       cc = os.path.join(build_to_top, value)
+     if key == 'CXX':
+       cxx = os.path.join(build_to_top, value)
+ 
+   ar = gyp.common.GetEnvironFallback(['AR_target', 'AR'], ar)
++  ranlib = gyp.common.GetEnvironFallback(['RANLIB_target', 'RANLIB'], ranlib)
++  nm = gyp.common.GetEnvironFallback(['NM_target', 'NM'], nm)
+   cc = gyp.common.GetEnvironFallback(['CC_target', 'CC'], cc)
+   cxx = gyp.common.GetEnvironFallback(['CXX_target', 'CXX'], cxx)
+ 
+   if ar:
+     SetVariable(output, 'CMAKE_AR', ar)
++  if ranlib:
++    SetVariable(output, 'CMAKE_RANLIB', ranlib)
++  if nm:
++    SetVariable(output, 'CMAKE_NM', nm)
+   if cc:
+     SetVariable(output, 'CMAKE_C_COMPILER', cc)
+   if cxx:
 diff --git a/pylib/gyp/generator/xcode.py b/pylib/gyp/generator/xcode.py
 index db99d6a..8d56baf 100644
 --- a/pylib/gyp/generator/xcode.py

Telegram/Patches/macold/qtbase_5_3_2.diff

@@ -1,5 +1,5 @@
 diff --git a/configure b/configure
-index cb8d78f..cadb3f0 100755
+index cb8d78fd3cb..cadb3f0a880 100755
 --- a/configure
 +++ b/configure
 @@ -511,7 +511,8 @@ if [ "$BUILD_ON_MAC" = "yes" ]; then
@@ -13,7 +13,7 @@ index cb8d78f..cadb3f0 100755
          echo "   Xcode not set up properly. You may need to confirm the license" >&2
          echo "   agreement by running /usr/bin/xcodebuild without arguments." >&2
 diff --git a/mkspecs/common/g++-macx.conf b/mkspecs/common/g++-macx.conf
-index 086510d..c485967 100644
+index 086510dd963..c485967863d 100644
 --- a/mkspecs/common/g++-macx.conf
 +++ b/mkspecs/common/g++-macx.conf
 @@ -14,7 +14,13 @@ QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO += -gdwarf-2
@@ -32,7 +32,7 @@ index 086510d..c485967 100644
  QMAKE_XCODE_GCC_VERSION = com.apple.compilers.llvmgcc42
  
 diff --git a/mkspecs/features/mac/default_pre.prf b/mkspecs/features/mac/default_pre.prf
-index 0cc8cd6..ca9725b 100644
+index 0cc8cd6dfdd..ca9725b7791 100644
 --- a/mkspecs/features/mac/default_pre.prf
 +++ b/mkspecs/features/mac/default_pre.prf
 @@ -12,7 +12,9 @@ isEmpty(QMAKE_XCODE_DEVELOPER_PATH) {
@@ -47,7 +47,7 @@ index 0cc8cd6..ca9725b 100644
  }
  
 diff --git a/src/gui/image/qbmphandler.cpp b/src/gui/image/qbmphandler.cpp
-index bb79a13..5d595bc 100644
+index bb79a139b3c..5d595bc3b34 100644
 --- a/src/gui/image/qbmphandler.cpp
 +++ b/src/gui/image/qbmphandler.cpp
 @@ -220,6 +220,10 @@ static bool read_dib_body(QDataStream &s, const BMP_INFOHDR &bi, int offset, int
@@ -74,7 +74,7 @@ index bb79a13..5d595bc 100644
      if (ncols > 0) {                                // read color table
          uchar rgb[4];
 diff --git a/src/gui/painting/qpaintengine_p.h b/src/gui/painting/qpaintengine_p.h
-index ebff950..4300ca4 100644
+index ebff9509ab2..4300ca4c0f0 100644
 --- a/src/gui/painting/qpaintengine_p.h
 +++ b/src/gui/painting/qpaintengine_p.h
 @@ -87,8 +87,18 @@ public:
@@ -98,7 +98,7 @@ index ebff950..4300ca4 100644
  
          // Make sure we're inside the viewport.
 diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
-index 4879ae5..56cdcba 100644
+index 4879ae51d7d..56cdcbaf01c 100644
 --- a/src/gui/text/qtextlayout.cpp
 +++ b/src/gui/text/qtextlayout.cpp
 @@ -654,6 +654,9 @@ int QTextLayout::nextCursorPosition(int oldPos, CursorMode mode) const
@@ -175,7 +175,7 @@ index 4879ae5..56cdcba 100644
  
          inline void resetRightBearing()
 diff --git a/src/gui/text/qtextlayout.h b/src/gui/text/qtextlayout.h
-index cbe42c3..b273db7 100644
+index cbe42c38444..b273db7e78c 100644
 --- a/src/gui/text/qtextlayout.h
 +++ b/src/gui/text/qtextlayout.h
 @@ -194,6 +194,9 @@ private:
@@ -188,8 +188,21 @@ index cbe42c3..b273db7 100644
  };
  
  
+diff --git a/src/network/access/qhttpnetworkconnection.cpp b/src/network/access/qhttpnetworkconnection.cpp
+index 360f9722c70..f28f289ef6a 100644
+--- a/src/network/access/qhttpnetworkconnection.cpp
++++ b/src/network/access/qhttpnetworkconnection.cpp
+@@ -118,6 +118,8 @@ QHttpNetworkConnectionPrivate::~QHttpNetworkConnectionPrivate()
+ {
+     for (int i = 0; i < channelCount; ++i) {
+         if (channels[i].socket) {
++            // Patch: backport critical bugfix from '4f959b6b30' commit.
++            QObject::disconnect(channels[i].socket, Q_NULLPTR, &channels[i], Q_NULLPTR);
+             channels[i].socket->close();
+             delete channels[i].socket;
+         }
 diff --git a/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm
-index ca7afb7..25ae500 100644
+index ca7afb7d1b9..25ae50008db 100644
 --- a/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm
 +++ b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm
 @@ -256,6 +256,13 @@ static void getFontDescription(CTFontDescriptorRef font, FontDescription *fd)
@@ -206,8 +219,22 @@ index ca7afb7..25ae500 100644
      fd->styleName = (CFStringRef)CTFontDescriptorCopyAttribute(font, kCTFontStyleNameAttribute);
      fd->weight = QFont::Normal;
      fd->style = QFont::StyleNormal;
+diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+index 6e2c8a2a9af..3cace8abcbc 100644
+--- a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
++++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+@@ -717,7 +717,8 @@ void QCoreTextFontEngine::getUnscaledGlyph(glyph_t, QPainterPath *, glyph_metric
+ 
+ QFixed QCoreTextFontEngine::emSquareSize() const
+ {
+-    return QFixed::QFixed(int(CTFontGetUnitsPerEm(ctfont)));
++    // Patch: Fix build for Xcode 9.3.1.
++    return QFixed(int(CTFontGetUnitsPerEm(ctfont)));
+ }
+ 
+ QFontEngine *QCoreTextFontEngine::cloneWithSize(qreal pixelSize) const
 diff --git a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
-index 92358ec..694fee7 100644
+index 92358ecc745..694fee73507 100644
 --- a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
 +++ b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
 @@ -213,7 +213,8 @@ static void cleanupCocoaApplicationDelegate()
@@ -244,7 +271,7 @@ index 92358ec..694fee7 100644
  
  - (void)appleEventQuit:(NSAppleEventDescriptor *)event withReplyEvent:(NSAppleEventDescriptor *)replyEvent
 diff --git a/src/plugins/platforms/cocoa/qcocoacursor.mm b/src/plugins/platforms/cocoa/qcocoacursor.mm
-index b81b9a0..4e59e83 100644
+index b81b9a0b1c2..4e59e833b1d 100644
 --- a/src/plugins/platforms/cocoa/qcocoacursor.mm
 +++ b/src/plugins/platforms/cocoa/qcocoacursor.mm
 @@ -81,7 +81,7 @@ void QCocoaCursor::setPos(const QPoint &position)
@@ -256,8 +283,41 @@ index b81b9a0..4e59e83 100644
      CGEventPost(kCGHIDEventTap, e);
      CFRelease(e);
  }
+diff --git a/src/plugins/platforms/cocoa/qcocoahelpers.mm b/src/plugins/platforms/cocoa/qcocoahelpers.mm
+index 9850f83dea8..b2e1d3dfda7 100644
+--- a/src/plugins/platforms/cocoa/qcocoahelpers.mm
++++ b/src/plugins/platforms/cocoa/qcocoahelpers.mm
+@@ -649,9 +649,10 @@ OSStatus qt_mac_drawCGImage(CGContextRef inContext, const CGRect *inBounds, CGIm
+     // Verbatim copy if HIViewDrawCGImage (as shown on Carbon-Dev)
+     OSStatus err = noErr;
+ 
+-    require_action(inContext != NULL, InvalidContext, err = paramErr);
+-    require_action(inBounds != NULL, InvalidBounds, err = paramErr);
+-    require_action(inImage != NULL, InvalidImage, err = paramErr);
++    // Patch: Fix build on latest Xcode.
++    //require_action(inContext != NULL, InvalidContext, err = paramErr);
++    //require_action(inBounds != NULL, InvalidBounds, err = paramErr);
++    //require_action(inImage != NULL, InvalidImage, err = paramErr);
+ 
+     CGContextSaveGState( inContext );
+     CGContextTranslateCTM (inContext, 0, inBounds->origin.y + CGRectGetMaxY(*inBounds));
+@@ -660,9 +661,11 @@ OSStatus qt_mac_drawCGImage(CGContextRef inContext, const CGRect *inBounds, CGIm
+     CGContextDrawImage(inContext, *inBounds, inImage);
+ 
+     CGContextRestoreGState(inContext);
+-InvalidImage:
+-InvalidBounds:
+-InvalidContext:
++
++// Patch: Fix build on latest Xcode.
++//InvalidImage:
++//InvalidBounds:
++//InvalidContext:
+         return err;
+ }
+ 
 diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
-index 9fd05a6..dea6072 100644
+index 9fd05a65ee9..dea60720e78 100644
 --- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
 +++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
 @@ -402,14 +402,24 @@ void QCocoaIntegration::updateScreens()
@@ -288,7 +348,7 @@ index 9fd05a6..dea6072 100644
  
  QCocoaScreen *QCocoaIntegration::screenAtIndex(int index)
 diff --git a/src/plugins/platforms/cocoa/qcocoakeymapper.mm b/src/plugins/platforms/cocoa/qcocoakeymapper.mm
-index e46eaff..c62db53 100644
+index e46eaff6be3..c62db534a2d 100644
 --- a/src/plugins/platforms/cocoa/qcocoakeymapper.mm
 +++ b/src/plugins/platforms/cocoa/qcocoakeymapper.mm
 @@ -382,6 +382,12 @@ bool QCocoaKeyMapper::updateKeyboard()
@@ -315,7 +375,7 @@ index e46eaff..c62db53 100644
      }
      return ret;
 diff --git a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
-index 83c960d..03ae969 100755
+index 83c960d9317..03ae9696afe 100755
 --- a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
 +++ b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
 @@ -102,7 +102,10 @@ QT_USE_NAMESPACE
@@ -483,7 +543,7 @@ index 83c960d..03ae969 100755
  }
  @end
 diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
-index 4d0458a..3357a5e 100644
+index 4d0458a4aa2..3357a5ef817 100644
 --- a/src/plugins/platforms/cocoa/qcocoawindow.mm
 +++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
 @@ -167,7 +167,8 @@ static bool isMouseEvent(NSEvent *ev)
@@ -546,7 +606,7 @@ index 4d0458a..3357a5e 100644
          [iconButton setImage:image];
          [image release];
 diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
-index a18ee7f..1f91feb 100644
+index a18ee7ff71d..1f91feb0ae8 100644
 --- a/src/plugins/platforms/cocoa/qnsview.mm
 +++ b/src/plugins/platforms/cocoa/qnsview.mm
 @@ -393,7 +393,9 @@ static NSString *_q_NSWindowDidChangeOcclusionStateNotification = nil;
@@ -615,7 +675,7 @@ index a18ee7f..1f91feb 100644
      }
      return [super performKeyEquivalent:nsevent];
 diff --git a/src/tools/qlalr/lalr.cpp b/src/tools/qlalr/lalr.cpp
-index c680764..e2a7aaf 100644
+index c68076477f3..e2a7aafa586 100644
 --- a/src/tools/qlalr/lalr.cpp
 +++ b/src/tools/qlalr/lalr.cpp
 @@ -246,11 +246,13 @@ void Grammar::buildExtendedGrammar ()
@@ -655,7 +715,7 @@ index c680764..e2a7aaf 100644
                      continue;
  
 diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
-index 7396808..7178aec 100644
+index 7396808442e..7178aecf800 100644
 --- a/src/widgets/kernel/qwidget.cpp
 +++ b/src/widgets/kernel/qwidget.cpp
 @@ -4722,6 +4722,17 @@ void QWidget::render(QPainter *painter, const QPoint &targetOffset,
@@ -708,7 +768,7 @@ index 7396808..7178aec 100644
                  || (k->key() == Qt::Key_Tab && (k->modifiers() & Qt::ShiftModifier)))
                  res = focusNextPrevChild(false);
 diff --git a/src/widgets/styles/qmacstyle_mac.mm b/src/widgets/styles/qmacstyle_mac.mm
-index 0845a5e..5735cb6 100644
+index 0845a5eb02f..5735cb6b396 100644
 --- a/src/widgets/styles/qmacstyle_mac.mm
 +++ b/src/widgets/styles/qmacstyle_mac.mm
 @@ -3667,9 +3667,11 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
@@ -726,7 +786,7 @@ index 0845a5e..5735cb6 100644
              }
  
 diff --git a/src/widgets/util/qsystemtrayicon_qpa.cpp b/src/widgets/util/qsystemtrayicon_qpa.cpp
-index f98aeaf..00c0734 100644
+index f98aeaf6782..00c0734129e 100644
 --- a/src/widgets/util/qsystemtrayicon_qpa.cpp
 +++ b/src/widgets/util/qsystemtrayicon_qpa.cpp
 @@ -99,13 +99,18 @@ void QSystemTrayIconPrivate::updateIcon_sys()
@@ -755,7 +815,7 @@ index f98aeaf..00c0734 100644
  }
  
 diff --git a/src/widgets/widgets/qwidgetlinecontrol.cpp b/src/widgets/widgets/qwidgetlinecontrol.cpp
-index 75f3059..980f2be 100644
+index 75f30599be4..980f2be1e93 100644
 --- a/src/widgets/widgets/qwidgetlinecontrol.cpp
 +++ b/src/widgets/widgets/qwidgetlinecontrol.cpp
 @@ -1867,7 +1867,8 @@ void QWidgetLineControl::processKeyEvent(QKeyEvent* event)
@@ -769,7 +829,7 @@ index 75f3059..980f2be 100644
  #ifndef QT_NO_COMPLETER
              complete(event->key());
 diff --git a/src/widgets/widgets/qwidgettextcontrol.cpp b/src/widgets/widgets/qwidgettextcontrol.cpp
-index 96438a0..b0b7206 100644
+index 96438a0bdf7..b0b72064056 100644
 --- a/src/widgets/widgets/qwidgettextcontrol.cpp
 +++ b/src/widgets/widgets/qwidgettextcontrol.cpp
 @@ -1342,7 +1342,8 @@ void QWidgetTextControlPrivate::keyPressEvent(QKeyEvent *e)

Telegram/Patches/qtbase_5_6_2.diff

@@ -221,6 +221,19 @@ index f74d4d4229..8ad672c9fe 100644
  };
  
  
+diff --git a/src/network/access/qhttpnetworkconnection.cpp b/src/network/access/qhttpnetworkconnection.cpp
+index c4cb8e65c0..45793e364f 100644
+--- a/src/network/access/qhttpnetworkconnection.cpp
++++ b/src/network/access/qhttpnetworkconnection.cpp
+@@ -110,6 +110,8 @@ QHttpNetworkConnectionPrivate::~QHttpNetworkConnectionPrivate()
+ {
+     for (int i = 0; i < channelCount; ++i) {
+         if (channels[i].socket) {
++            // Patch: backport critical bugfix from '4f959b6b30' commit.
++            QObject::disconnect(channels[i].socket, Q_NULLPTR, &channels[i], Q_NULLPTR);
+             channels[i].socket->close();
+             delete channels[i].socket;
+         }
 diff --git a/src/network/socket/qnativesocketengine_win.cpp b/src/network/socket/qnativesocketengine_win.cpp
 index 41834b21ae..8cdf4ab145 100644
 --- a/src/network/socket/qnativesocketengine_win.cpp
@@ -239,6 +252,43 @@ index 41834b21ae..8cdf4ab145 100644
                          if (value == WSAEADDRNOTAVAIL) {
                              setError(QAbstractSocket::NetworkError, AddressNotAvailableErrorString);
                              socketState = QAbstractSocket::UnconnectedState;
+diff --git a/src/platformsupport/dbustray/qdbustrayicon.cpp b/src/platformsupport/dbustray/qdbustrayicon.cpp
+index 4d6e70720d..9bdb0beb67 100644
+--- a/src/platformsupport/dbustray/qdbustrayicon.cpp
++++ b/src/platformsupport/dbustray/qdbustrayicon.cpp
+@@ -58,9 +58,18 @@ QT_BEGIN_NAMESPACE
+ 
+ Q_LOGGING_CATEGORY(qLcTray, "qt.qpa.tray")
+ 
++static QString cachePath()
++{
++    QString xdgCache = QString::fromUtf8(getenv("XDG_CACHE_HOME"));
++    if (xdgCache.isEmpty()) {
++        xdgCache = QDir::cleanPath(QDir::homePath() + QStringLiteral("/.cache"));
++    }
++    return xdgCache;
++}
++
+ static const QString KDEItemFormat = QStringLiteral("org.kde.StatusNotifierItem-%1-%2");
+ static const QString KDEWatcherService = QStringLiteral("org.kde.StatusNotifierWatcher");
+-static const QString TempFileTemplate =  QDir::tempPath() + QStringLiteral("/qt-trayicon-XXXXXX.png");
++static const QString TempFileTemplate = cachePath() + QStringLiteral("/qt-trayicon-XXXXXX.png");
+ static const QString XdgNotificationService = QStringLiteral("org.freedesktop.Notifications");
+ static const QString XdgNotificationPath = QStringLiteral("/org/freedesktop/Notifications");
+ static const QString DefaultAction = QStringLiteral("default");
+@@ -151,6 +160,12 @@ QTemporaryFile *QDBusTrayIcon::tempIcon(const QIcon &icon)
+         uint pid = session.interface()->servicePid(KDEWatcherService).value();
+         QString processName = QLockFilePrivate::processNameByPid(pid);
+         necessary = processName.endsWith(QStringLiteral("indicator-application-service"));
++        if (!necessary) {
++            QString xdgDesktop = QString::fromUtf8(getenv("XDG_CURRENT_DESKTOP"));
++            QStringList desktops = xdgDesktop.toLower().split(QLatin1Char(':'));
++            necessary = desktops.contains(QStringLiteral("unity")) ||
++                        desktops.contains(QStringLiteral("ubuntu"));
++        }
+         necessity_checked = true;
+     }
+     if (!necessary)
 diff --git a/src/platformsupport/fontdatabases/basic/qbasicfontdatabase.cpp b/src/platformsupport/fontdatabases/basic/qbasicfontdatabase.cpp
 index 728b166b71..1dc64593e1 100644
 --- a/src/platformsupport/fontdatabases/basic/qbasicfontdatabase.cpp
@@ -417,6 +467,20 @@ index 566abf2126..5b9c714ffa 100644
      fd->styleName = (CFStringRef)CTFontDescriptorCopyAttribute(font, kCTFontStyleNameAttribute);
      fd->weight = QFont::Normal;
      fd->style = QFont::StyleNormal;
+diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+index 7b459584ea..2ed2fd9b3b 100644
+--- a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
++++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
+@@ -764,7 +764,8 @@ void QCoreTextFontEngine::getUnscaledGlyph(glyph_t glyph, QPainterPath *path, gl
+ 
+ QFixed QCoreTextFontEngine::emSquareSize() const
+ {
+-    return QFixed::QFixed(int(CTFontGetUnitsPerEm(ctfont)));
++    // Patch: Fix build for Xcode 9.3.1.
++    return QFixed(int(CTFontGetUnitsPerEm(ctfont)));
+ }
+ 
+ QFontEngine *QCoreTextFontEngine::cloneWithSize(qreal pixelSize) const
 diff --git a/src/plugins/platforminputcontexts/compose/compose.pro b/src/plugins/platforminputcontexts/compose/compose.pro
 index 86bdd4729b..9b9c8ded08 100644
 --- a/src/plugins/platforminputcontexts/compose/compose.pro
@@ -603,7 +667,7 @@ index c2d206fb45..9b9739862d 100644
      }
      return ret;
 diff --git a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
-index 8152c57ffd..5ddd7b353d 100644
+index 8152c57ffd..87ba2f3f72 100644
 --- a/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
 +++ b/src/plugins/platforms/cocoa/qcocoasystemtrayicon.mm
 @@ -94,6 +94,8 @@ QT_USE_NAMESPACE
@@ -719,7 +783,19 @@ index 8152c57ffd..5ddd7b353d 100644
          systray = sys;
          imageCell = [[QNSImageView alloc] initWithParent:self];
          [item setView: imageCell];
-@@ -482,6 +513,10 @@ QT_END_NAMESPACE
+@@ -448,6 +479,11 @@ QT_END_NAMESPACE
+ -(void)dealloc {
+     [[NSStatusBar systemStatusBar] removeStatusItem:item];
+     [[NSNotificationCenter defaultCenter] removeObserver:imageCell];
++
++    // Patch: Fix crash in macOS 10.14.
++    // Somehow item and imageCell are retained and attempt to be drawn if left in view.
++    [item setView: nil];
++
+     [imageCell release];
+     [item release];
+     [super dealloc];
+@@ -482,6 +518,10 @@ QT_END_NAMESPACE
           selector:@selector(menuTrackingDone:)
               name:NSMenuDidEndTrackingNotification
                   object:m];

Telegram/Resources/basic.style

@@ -40,7 +40,7 @@ lineWidth: 1px;
 
 defaultTextPalette: TextPalette {
 	linkFg: windowActiveTextFg;
-	monoFg: windowSubTextFg;
+	monoFg: msgInMonoFg;
 	selectBg: msgInBgSelected;
 	selectFg: transparent; // use painter current pen instead
 	selectLinkFg: historyLinkInFgSelected;
@@ -172,6 +172,21 @@ inFwdTextPaletteSelected: TextPalette(defaultTextPalette) {
 outFwdTextPaletteSelected: TextPalette(defaultTextPalette) {
 	linkFg: msgOutServiceFgSelected;
 }
+inReplyTextPalette: TextPalette(inTextPalette) {
+	linkFg: msgInDateFg;
+}
+inReplyTextPaletteSelected: TextPalette(inTextPaletteSelected) {
+	linkFg: msgInDateFgSelected;
+}
+outReplyTextPalette: TextPalette(outTextPalette) {
+	linkFg: msgOutDateFg;
+}
+outReplyTextPaletteSelected: TextPalette(outTextPaletteSelected) {
+	linkFg: msgOutDateFgSelected;
+}
+imgReplyTextPalette: TextPalette(defaultTextPalette) {
+	linkFg: msgImgReplyBarColor;
+}
 inSemiboldPalette: TextPalette(inTextPalette) {
 	linkFg: msgInServiceFg;
 	selectFg: msgInServiceFgSelected;
@@ -182,6 +197,9 @@ outSemiboldPalette: TextPalette(outTextPalette) {
 	selectFg: msgOutServiceFgSelected;
 	selectLinkFg: msgOutServiceFgSelected;
 }
+historyComposeAreaPalette: TextPalette(defaultTextPalette) {
+	linkFg: historyComposeAreaFgService;
+}
 
 mediaCaptionSkip: 5px;
 mediaInBubbleSkip: 5px;
@@ -215,8 +233,6 @@ emojiReplaceHeight: 56px;
 emojiReplaceInnerHeight: 42px;
 emojiReplacePadding: 14px;
 
-connectingPadding: margins(5px, 5px, 5px, 5px);
-
 dragFont: font(28px semibold);
 dragSubfont: font(20px semibold);
 dragColor: windowSubTextFg;

Telegram/Resources/colors.palette

@@ -444,6 +444,9 @@ historyComposeButtonBg: historyComposeAreaBg; // unblock / join channel / mute c
 historyComposeButtonBgOver: windowBgOver; // unblock / join channel / mute channel button background with mouse over
 historyComposeButtonBgRipple: windowBgRipple; // unblock / join channel / mute channel button ripple effect
 
+mapPointDrop: #fd4444; // geo location marker background
+mapPointDot: #ffffff; // geo location marker point
+
 // overview
 overviewCheckBg: #00000040; // shared media / files / links checkbox background for not selected rows when some rows are selected
 overviewCheckBgActive: windowBgActive; // shared media / files / links checkbox background for selected rows

Telegram/Resources/export_html/css/style.css

@@ -0,0 +1,530 @@
+body {
+    margin: 0;
+    font: 12px/18px 'Open Sans',"Lucida Grande","Lucida Sans Unicode",Arial,Helvetica,Verdana,sans-serif;
+}
+strong {
+    font-weight: 700;
+}
+code, kbd, pre, samp {
+    font-family: Menlo,Monaco,Consolas,"Courier New",monospace;
+}
+code {
+    padding: 2px 4px;
+    font-size: 90%;
+    color: #c7254e;
+    background-color: #f9f2f4;
+    border-radius: 4px;
+}
+pre {
+    display: block;
+    margin: 0;
+    line-height: 1.42857143;
+    word-break: break-all;
+    word-wrap: break-word;
+    color: #333;
+    background-color: #f5f5f5;
+    border-radius: 4px;
+    overflow: auto;
+    padding: 3px;
+    border: 1px solid #eee;
+    max-height: none;
+    font-size: inherit;
+}
+.clearfix:after {
+    content: " ";
+    visibility: hidden;
+    display: block;
+    height: 0;
+    clear: both;
+}
+.pull_left {
+    float: left;
+}
+.pull_right {
+    float: right;
+}
+.page_wrap {
+    background-color: #ffffff;
+    color: #000000;
+}
+.page_wrap a {
+    color: #168acd;
+    text-decoration: none;
+}
+.page_wrap a:hover {
+    text-decoration: underline;
+}
+.page_header {
+    position: fixed;
+    z-index: 10;
+    background-color: #ffffff;
+    width: 100%;
+    border-bottom: 1px solid #e3e6e8;
+}
+.page_header .content {
+    width: 480px;
+    margin: 0 auto;
+    border-radius: 0 !important;
+}
+.page_header a.content {
+    background-repeat: no-repeat;
+    background-position: 24px 21px;
+    background-size: 24px 24px;
+}
+.bold {
+    color: #212121;
+    font-weight: 700;
+}
+.details {
+    color: #70777b;
+}
+.page_header .content .text {
+    padding: 24px 24px 22px 24px;
+    font-size: 22px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+.page_header a.content .text {
+    padding: 24px 24px 22px 82px;
+}
+.page_body {
+    padding-top: 64px;
+    width: 480px;
+    margin: 0 auto;
+}
+.page_about {
+    padding: 24px 24px;
+}
+.with_divider {
+    border-top: 1px solid #e3e6e8;
+}
+.userpic_link {
+    display: block;
+    text-decoration: none;
+}
+.userpic_link:hover {
+    text-decoration: none;
+}
+.userpic {
+    display: block;
+    border-radius: 50%;
+    overflow: hidden;
+}
+.userpic .initials {
+    display: block;
+    color: #fff;
+    text-align: center;
+    text-transform: uppercase;
+    user-select: none;
+}
+.color_red,
+.userpic1,
+.media_call .fill,
+.media_file .fill,
+.media_live_location .fill {
+    background-color: #ff5555;
+}
+.color_green,
+.userpic2,
+.media_call.success .fill,
+.media_photo .fill {
+    background-color: #64bf47;
+}
+.color_yellow,
+.userpic3,
+.media_venue .fill {
+    background-color: #ffab00;
+}
+.color_blue,
+.userpic4,
+.media_audio_file .fill,
+.media_voice_message .fill {
+    background-color: #4f9cd9;
+}
+.color_purple,
+.userpic5,
+.media_game .fill {
+    background-color: #9884e8;
+}
+.color_pink,
+.userpic6,
+.media_invoice .fill {
+    background-color: #e671a5;
+}
+.color_sea,
+.userpic7,
+.media_location .fill,
+.media_video .fill {
+    background-color: #47bcd1;
+}
+.color_orange,
+.userpic8,
+.media_contact .fill {
+    background-color: #ff8c44;
+}
+.personal_info {
+    padding: 24px;
+}
+.personal_info .userpic .initials {
+    font-size: 30px;
+}
+.personal_info .rows {
+    float: left;
+    padding-right: 24px;
+}
+.personal_info .names {
+    width: 164px;
+}
+.personal_info .info {
+    width: 124px;
+}
+.personal_info .bio {
+    width: 400px;
+}
+.personal_info .row {
+    padding-bottom: 16px;
+}
+a.block_link {
+    display: block;
+    text-decoration: none !important;
+    border-radius: 4px;
+}
+a.block_link:hover {
+    text-decoration: none !important;
+    background-color: #f5f7f8;
+}
+.sections {
+    padding: 11px 0;
+}
+.section {
+    height: 48px;
+    background-position: 24px 12px;
+    background-repeat: no-repeat;
+    background-size: 24px 24px;
+}
+.section .counter {
+    float: right;
+    padding: 14px 24px 0;
+    font-size: 15px;
+}
+.section .label {
+    padding: 15px 0 0 82px;
+    font-size: 15px;
+}
+.list_page .page_about {
+    padding: 16px 24px 0;
+    font-size: 11px;
+}
+.list_page .entry_list {
+    padding: 16px 0;
+}
+.list_page .entry {
+    padding: 10px 16px;
+}
+.list_page .entry .userpic .initials {
+    font-size: 18px;
+}
+.list_page .entry .body {
+    margin-left: 66px;
+}
+.list_page .entry .name {
+    padding: 4px 0 2px;
+    font-size: 14px;
+}
+.list_page .entry .subname {
+    padding-top: 4px;
+}
+.list_page .entry .details_entry {
+    padding-top: 4px;
+}
+.list_page .entry .info {
+    font-size: 11px;
+    padding-top: 5px;
+}
+.history {
+    padding: 16px 0;
+}
+.message {
+    margin: 0 -10px;
+    transition: background-color 2.0s ease;
+}
+div.selected {
+    background-color: rgba(242,246,250,255);
+    transition: background-color 0.5s ease;
+}
+.service {
+    padding: 10px 24px;
+}
+.service .body {
+    text-align: center;
+}
+.service .userpic_wrap {
+    padding-top: 10px;
+}
+.service .userpic {
+    margin: 0 auto;
+}
+.service .userpic .initials {
+    font-size: 24px;
+}
+.message .userpic .initials {
+    font-size: 16px;
+}
+.default {
+    padding: 10px;
+}
+.default.joined {
+    margin-top: -10px;
+}
+.default .from_name {
+    color: #3892db;
+    font-weight: 700;
+    padding-bottom: 5px;
+}
+.default .from_name .details {
+    font-weight: normal;
+}
+.default .body {
+    margin-left: 60px;
+}
+.default .text {
+    word-wrap: break-word;
+    line-height: 150%;
+}
+.default .reply_to,
+.default .media_wrap {
+    padding-bottom: 5px;
+}
+.default .media {
+    margin: 0 -10px;
+    padding: 5px 10px;
+}
+.default .media .fill,
+.default .media .thumb {
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+}
+.default .media .fill {
+    background-repeat: no-repeat;
+    background-position: 12px 12px;
+    background-size: 24px 24px;
+}
+.default .media .title {
+    padding-top: 4px;
+    font-size: 14px;
+}
+.default .media .description {
+    color: #000000;
+    padding-top: 4px;
+    font-size: 13px;
+}
+.default .media .status {
+    padding-top: 4px;
+    font-size: 13px;
+}
+.default .video_file_wrap,
+.default .animated_wrap {
+    position: relative;
+}
+.default .video_file,
+.default .animated,
+.default .photo,
+.default .sticker {
+    display: block;
+}
+.video_duration {
+    background: rgba(0, 0, 0, .4);
+    padding: 0px 5px;
+    position: absolute;
+    z-index: 2;
+    border-radius: 2px;
+    right: 3px;
+    bottom: 3px;
+    color: #ffffff;
+    font-size: 11px;
+}
+.video_play_bg {
+    background: rgba(0, 0, 0, .4);
+    width: 40px;
+    height: 40px;
+    line-height: 0;
+    position: absolute;
+    z-index: 2;
+    border-radius: 50%;
+    overflow: hidden;
+    margin: -20px auto 0 -20px;
+    top: 50%;
+    left: 50%;
+    pointer-events: none;
+}
+.video_play {
+    position: absolute;
+    display: inline-block;
+    top: 50%;
+    left: 50%;
+    margin-left: -5px;
+    margin-top: -9px;
+    z-index: 1;
+    width: 0;
+    height: 0;
+    border-style: solid;
+    border-width: 9px 0 9px 14px;
+    border-color: transparent transparent transparent #fff;
+}
+.gif_play {
+    font-weight: 700;
+    color: #FFF;
+    display: block;
+    line-height: 40px;
+    font-size: 13px;
+    text-align: center;
+}
+.pagination {
+    text-align: center;
+    padding: 20px;
+    font-size: 16px;
+}
+
+.toast_container {
+    position: fixed;
+    left: 50%;
+    top: 50%;
+    opacity: 0;
+    transition: opacity 3.0s ease;
+}
+.toast_body {
+    margin: 0 -50%;
+    float: left;
+    border-radius: 15px;
+    padding: 10px 20px;
+    background: rgba(0, 0, 0, 0.7);
+    color: #ffffff;
+}
+div.toast_shown {
+    opacity: 1;
+    transition: opacity 0.4s ease;
+}
+
+.section.calls {
+    background-image: url(../images/section_calls.png);
+}
+.section.chats {
+    background-image: url(../images/section_chats.png);
+}
+.section.contacts {
+    background-image: url(../images/section_contacts.png);
+}
+.section.frequent {
+    background-image: url(../images/section_frequent.png);
+}
+.section.photos {
+    background-image: url(../images/section_photos.png);
+}
+.section.sessions {
+    background-image: url(../images/section_sessions.png);
+}
+.section.web {
+    background-image: url(../images/section_web.png);
+}
+.section.other {
+    background-image: url(../images/section_other.png)
+}
+.page_header a.content {
+    background-image: url(../images/back.png);
+}
+.media_call .fill {
+    background-image: url(../images/media_call.png)
+}
+.media_contact .fill {
+    background-image: url(../images/media_contact.png)
+}
+.media_file .fill {
+    background-image: url(../images/media_file.png)
+}
+.media_game .fill {
+    background-image: url(../images/media_game.png)
+}
+.media_live_location .fill,
+.media_location .fill,
+.media_venue .fill {
+    background-image: url(../images/media_location.png)
+}
+.media_audio_file .fill {
+    background-image: url(../images/media_music.png)
+}
+.media_invoice .fill {
+    background-image: url(../images/media_shop.png)
+}
+.media_voice_message .fill {
+    background-image: url(../images/media_voice.png)
+}
+.media_photo .fill {
+    background-image: url(../images/media_photo.png)
+}
+.media_video .fill {
+    background-image: url(../images/media_video.png)
+}
+
+@media only screen and (min--moz-device-pixel-ratio: 2), only screen and (-o-min-device-pixel-ratio: 2/1), only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-device-pixel-ratio: 2) {
+.section.calls {
+    background-image: url(../images/section_calls@2x.png);
+}
+.section.chats {
+    background-image: url(../images/section_chats@2x.png);
+}
+.section.contacts {
+    background-image: url(../images/section_contacts@2x.png);
+}
+.section.frequent {
+    background-image: url(../images/section_frequent@2x.png);
+}
+.section.photos {
+    background-image: url(../images/section_photos@2x.png);
+}
+.section.sessions {
+    background-image: url(../images/section_sessions@2x.png);
+}
+.section.web {
+    background-image: url(../images/section_web@2x.png);
+}
+.section.other {
+    background-image: url(../images/section_other@2x.png);
+}
+.page_header a.content {
+    background-image: url(../images/back@2x.png);
+}
+.media_call .fill {
+    background-image: url(../images/media_call@2x.png)
+}
+.media_contact .fill {
+    background-image: url(../images/media_contact@2x.png)
+}
+.media_file .fill {
+    background-image: url(../images/media_file@2x.png)
+}
+.media_game .fill {
+    background-image: url(../images/media_game@2x.png)
+}
+.media_live_location .fill,
+.media_location .fill,
+.media_venue .fill {
+    background-image: url(../images/media_location@2x.png)
+}
+.media_audio_file .fill {
+    background-image: url(../images/media_music@2x.png)
+}
+.media_invoice .fill {
+    background-image: url(../images/media_shop@2x.png)
+}
+.media_voice_message .fill {
+    background-image: url(../images/media_voice@2x.png)
+}
+.media_photo .fill {
+    background-image: url(../images/media_photo@2x.png)
+}
+.media_video .fill {
+    background-image: url(../images/media_video@2x.png)
+}
+}

Telegram/Resources/export_html/js/script.js

@@ -0,0 +1,189 @@
+"use strict";
+
+window.AllowBackFromHistory = false;
+function CheckLocation() {
+    var start = "#go_to_message";
+    var hash = location.hash;
+    if (hash.substr(0, start.length) == start) {
+        var messageId = parseInt(hash.substr(start.length));
+        if (messageId) {
+            GoToMessage(messageId);
+        }
+    } else if (hash == "#allow_back") {
+        window.AllowBackFromHistory = true;
+    }
+}
+
+function ShowToast(text) {
+    var container = document.createElement("div");
+    container.className = "toast_container";
+    var inner = container.appendChild(document.createElement("div"));
+    inner.className = "toast_body";
+    inner.appendChild(document.createTextNode(text));
+    var appended = document.body.appendChild(container);
+    setTimeout(function () {
+        AddClass(appended, "toast_shown");
+        setTimeout(function () {
+            RemoveClass(appended, "toast_shown");
+            setTimeout(function () {
+                document.body.removeChild(appended);
+            }, 3000);
+        }, 3000);
+    }, 0);
+}
+
+function ShowHashtag(tag) {
+    ShowToast("This is a hashtag '#" + tag + "' link.");
+    return false;
+}
+
+function ShowCashtag(tag) {
+    ShowToast("This is a cashtag '$" + tag + "' link.");
+    return false;
+}
+
+function ShowBotCommand(command) {
+    ShowToast("This is a bot command '/" + command + "' link.");
+    return false;
+}
+
+function ShowMentionName() {
+    ShowToast("This is a link to a user mentioned by name.");
+    return false;
+}
+
+function AddClass(element, name) {
+    var current = element.className;
+    var expression = new RegExp('(^|\\s)' + name + '(\\s|$)', 'g');
+    if (expression.test(current)) {
+        return;
+    }
+    element.className = current + ' ' + name;
+}
+
+function RemoveClass(element, name) {
+    var current = element.className;
+    var expression = new RegExp('(^|\\s)' + name + '(\\s|$)', '');
+    var match = expression.exec(current);
+    while ((match = expression.exec(current)) != null) {
+        if (match[1].length > 0 && match[2].length > 0) {
+            current = current.substr(0, match.index + match[1].length)
+                + current.substr(match.index + match[0].length);
+        } else {
+            current = current.substr(0, match.index)
+                + current.substr(match.index + match[0].length);
+        }
+    }
+    element.className = current;
+}
+
+function EaseOutQuad(t) {
+    return t * t;
+}
+
+function EaseInOutQuad(t) {
+    return (t < 0.5) ? (2 * t * t) : ((4 - 2 * t) * t - 1);
+}
+
+function ScrollHeight() {
+    if ("innerHeight" in window) {
+        return window.innerHeight;
+    } else if (document.documentElement) {
+        return document.documentElement.clientHeight;
+    }
+    return document.body.clientHeight;
+}
+
+function ScrollTo(top, callback) {
+    var html = document.documentElement;
+    var current = html.scrollTop;
+    var delta = top - current;
+    var finish = function () {
+        html.scrollTop = top;
+        if (callback) {
+            callback();
+        }
+    };
+    if (!window.performance.now || delta == 0) {
+        finish();
+        return;
+    }
+    var transition = EaseOutQuad;
+    var max = 300;
+    if (delta < -max) {
+        current = top + max;
+        delta = -max;
+    } else if (delta > max) {
+        current = top - max;
+        delta = max;
+    } else {
+        transition = EaseInOutQuad;
+    }
+    var duration = 150;
+    var interval = 7;
+    var time = window.performance.now();
+    var animate = function () {
+        var now = window.performance.now();
+        if (now >= time + duration) {
+            finish();
+            return;
+        }
+        var dt = (now - time) / duration;
+        html.scrollTop = Math.round(current + delta * transition(dt));
+        setTimeout(animate, interval);
+    };
+    setTimeout(animate, interval);
+}
+
+function ScrollToElement(element, callback) {
+    var header = document.getElementsByClassName("page_header")[0];
+    var headerHeight = header.offsetHeight;
+    var html = document.documentElement;
+    var scrollHeight = ScrollHeight();
+    var available = scrollHeight - headerHeight;
+    var padding = 10;
+    var top = element.offsetTop;
+    var height = element.offsetHeight;
+    var desired = top
+        - Math.max((available - height) / 2, padding)
+        - headerHeight;
+    var scrollTopMax = html.offsetHeight - scrollHeight;
+    ScrollTo(Math.min(desired, scrollTopMax), callback);
+}
+
+function GoToMessage(messageId) {
+    var element = document.getElementById("message" + messageId);
+    if (element) {
+        var hash = "#go_to_message" + messageId;
+        if (location.hash != hash) {
+            location.hash = hash;
+        }
+        ScrollToElement(element, function () {
+            AddClass(element, "selected");
+            setTimeout(function () {
+                RemoveClass(element, "selected");
+            }, 1000);
+        });
+    } else {
+        ShowToast("This message was not exported. Maybe it was deleted.");
+    }
+    return false;
+}
+
+function GoBack(anchor) {
+    if (!window.AllowBackFromHistory) {
+        return true;
+    }
+    history.back();
+    if (!anchor || !anchor.getAttribute) {
+        return true;
+    }
+    var destination = anchor.getAttribute("href");
+    if (!destination) {
+        return true;
+    }
+    setTimeout(function () {
+        location.href = destination;
+    }, 100);
+    return false;
+}