Release v0.6.50: disable Viber chat OCR

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.24)
-project(KSwitcher VERSION 0.6.46 LANGUAGES CXX RC)
+project(KSwitcher VERSION 0.6.50 LANGUAGES CXX RC)
 if(NOT WIN32)
   message(FATAL_ERROR "KSwitcher uses native Windows APIs")
 endif()
@@ -89,6 +89,15 @@ else()
   target_link_options(KSwitcherOcrTests PRIVATE -static -static-libgcc -static-libstdc++)
 endif()
 enable_testing()
+add_executable(KSwitcherChatProfileTests tests/chat_profiles.cpp src/screenshot_launcher.cpp src/screenshot_activation.cpp src/app.cpp src/screenshot_notifications.cpp src/screenshot.cpp src/configuration.cpp src/ui.cpp resources/app.rc)
+target_link_libraries(KSwitcherChatProfileTests PRIVATE kscore)
+if(MSVC)
+  target_compile_options(KSwitcherChatProfileTests PRIVATE /utf-8)
+  set_property(TARGET KSwitcherChatProfileTests PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+else()
+  target_link_options(KSwitcherChatProfileTests PRIVATE -static -static-libgcc -static-libstdc++)
+endif()
+add_test(NAME chat-profile-regressions COMMAND KSwitcherChatProfileTests)
 add_executable(KSwitcherHistoryHostTests tests/history_host.cpp)
 target_link_libraries(KSwitcherHistoryHostTests PRIVATE kscore psapi)
 set_target_properties(KSwitcherHistoryHostTests PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/history-host-fixture-$<CONFIG>")

README.md

@@ -270,6 +270,55 @@ thumbnails and source labels aligned with the scaled fonts and spacing.
 
 ## Implemented
 
+### Chat language profiles — v0.6.48
+
+> From v0.6.50: Viber chat OCR is temporarily disabled. Saved Viber profiles are retained but inactive. Telegram and Teams profiles are unchanged; clipboard/image OCR remains available.
+>
+> З v0.6.50: OCR чатів Viber тимчасово вимкнений. Збережені профілі Viber залишаються, але не діють. Профілі Telegram і Teams та OCR зображень/буфера працюють як раніше.
+
+
+Settings separates General, Languages, Shortcuts, Clipboard and Tools into native tabs.
+Switching tabs preserves edits; Save, Cancel, Import and Export stay available below every page.
+
+Open the desired chat in Telegram Desktop or Microsoft Teams, then open Settings → Languages →
+**Languages for a chat…**. Select the chat and click the languages to include. Choose
+**Use languages**, then **Save** in Settings. The subset order is saved from the main
+layout list when editing the profile; one-language profiles are supported. **Remove profile** restores default behavior.
+
+For a matching chat, **Alt+Shift**, **Win+Space** (and reverse **Win+Shift+Space**) cycle
+through that subset. KSwitcher's **Next layout** conversion uses the same subset.
+Explicit KSwitcher hotkey bindings take precedence. Without a matching profile,
+Windows shortcuts keep their normal behavior and Next layout uses the global cycle.
+Unavailable layouts are skipped; if none remain installed, the global cycle is used.
+Direct layout shortcuts are unchanged. Profiles do not change Windows' installed languages.
+
+Matching uses the application and visible chat name, not a unique account/contact ID.
+Identically named chats in one application share a profile; renamed chats need a new
+profile. Telegram unread counters are ignored. Teams currently recognizes the desktop
+`Chat | name | Microsoft Teams` title format; other Teams title formats are not supported.
+Experimental Viber profiles introduced in v0.6.49 are disabled in v0.6.50 because repeated OCR caused delays. There is no background Viber OCR, recognition during language switching, or recognition when opening profiles. Saved Viber profiles are retained and marked inactive; Windows switching and Next layout use their normal/global behavior in Viber. Clipboard and image OCR are unchanged.
+Profiles stay on this PC (excluded from cloud sync), and are included in manual settings
+export/import. Available from v0.6.48.
+
+**Українською.** Налаштування розділено на вкладки General, Languages, Shortcuts, Clipboard
+і Tools. Перехід між ними зберігає незбережені зміни; Save, Cancel, Import і Export доступні
+на кожній вкладці. Відкрий потрібний чат у Telegram або Teams, потім **Settings → Languages → Languages
+for a chat…**. Вибери чат і потрібні мови, натисни **Use languages**, а потім **Save**.
+Набір діє для **Alt+Shift**, **Win+Space**, **Win+Shift+Space** та **Next layout** KSwitcher.
+Можна вибрати й одну мову; порядок зберігається із загального списку під час редагування профілю. **Remove profile**
+повертає звичайну поведінку. Без профілю системні комбінації працюють як раніше,
+а Next layout використовує загальний набір. Видалені з Windows розкладки пропускаються;
+якщо доступних мов профілю не залишилося, використовується загальний набір.
+Прямі комбінації мов не змінюються; явно задані комбінації KSwitcher мають пріоритет.
+Зіставлення виконується за програмою та назвою чату: однакові назви в одній програмі
+мають спільний профіль, після перейменування потрібен новий. Лічильник непрочитаних
+Telegram ігнорується. Teams підтримує зазначений вище формат заголовка.
+Експериментальні профілі Viber із v0.6.49 вимкнено у v0.6.50 через затримки від повторного OCR. Фонове розпізнавання, OCR при перемиканні мов та відкритті профілів більше не запускаються. Профілі Viber збережені й позначені як неактивні; системне перемикання та Next layout у Viber використовують звичайну поведінку й загальний набір. OCR буфера та зображень не змінено.
+Профілі локальні, входять до ручного експорту/імпорту, але не до
+хмарної синхронізації. Доступно з v0.6.48.
+
+### Existing features
+
 - Installed Windows keyboard layouts, configurable cycle/order and direct shortcuts; IMEs are switch-only.
   Text conversion cycles skip layouts that leave the text unchanged and use the next enabled layout
   that changes it. If none changes the text, the operation keeps the text and advances one layout.
@@ -544,9 +593,9 @@ Protocol and conflict regressions run with `build.ps1 -Test` or CMake's `sync-re
 
 ## Portable utilities
 
-The tray menu's **Utilities** submenu lists `.exe` files in a `tools` folder beside
+The tray menu's **Tools** submenu lists `.exe` files in a `tools` folder beside
 `KSwitcher.exe`, sorted by filename. For example, place `StayHere.exe` at
-`tools/StayHere.exe` and choose **Utilities → StayHere** to launch it manually.
+`tools/StayHere.exe` and choose **Tools → StayHere** to launch it manually.
 The folder is rescanned whenever the menu opens; no configuration or restart is needed.
 Only files directly in `tools` are listed (not subfolders, shortcuts, or KSwitcher's
 own executables beside the main program). Utilities start with `tools` as their working
@@ -559,7 +608,7 @@ utility files. Updates preserve personal utilities and refresh bundled StayHere
 documentation. Repository development scripts
 are not included in the portable tools folder.
 
-Choose **Utilities → StayHere** to start the bundled activity utility. It starts
+Choose **Tools → StayHere** to start the bundled activity utility. It starts
 enabled; left-click its tray icon to pause/resume or right-click for Exit. While
 enabled it prevents automatic sleep and, after three minutes without input, sends
 F15 on its 15-second check. It does not move the mouse, bypass locking, start with
@@ -599,8 +648,10 @@ default and require the main **Automatic correction (experimental)** checkbox to
 
 - **Use custom replacements**: enter one `typo=correction` pair per line, for example
   `првиіт=привіт` or `helo=hello`. Entries are normalized to lowercase; duplicate source words
-  are rejected. Each side must contain 1–32 letters of the same supported language, without
+  are rejected. The typo must contain 1–32 letters. The correction may contain several words
-  spaces or punctuation. Explicit pairs take priority over dictionary recognition, including
+  separated by single spaces, for example `мамамила=мама мила`, up to 32 characters including
+  spaces. Both sides must use the same supported language, without punctuation; leading,
+  trailing and repeated spaces are not allowed. Explicit pairs take priority over dictionary recognition, including
   already valid words, and do not require dictionary membership or satisfy the frequency limit.
 - **Correct spelling typos using dictionaries**: checks unknown words in the current language
   after no layout correction is found. It accepts exactly one dictionary candidate reachable
@@ -616,6 +667,8 @@ ALL CAPS, mixed-case identifiers, numbers, URLs and email addresses are skipped.
 is applied once, without chaining. Click **OK**, then **Save** in Settings; pairs and switches
 are included in settings export/import and synchronization. Undo restores the original word
 and suppresses its correction until restart.
+When synchronizing phrase replacements, update all participating PCs to v0.6.47 or newer;
+older clients reject spaces in replacement pairs.
 
 ### Layout correction and shared options
 

Release/README.md

@@ -1,21 +1,21 @@
 # Latest Windows release
 
-## v0.6.46 — 2026-11-05
+## v0.6.50 — 2026-11-06
 
 ## Changes
-- Bundle **tools/StayHere.exe** and **tools/StayHere-README.md**. Start the activity utility from **Utilities → StayHere**; it does not start automatically with KSwitcher.
+- Disable experimental Viber chat OCR to remove repeated recognition and its language-switching delays. No Viber OCR runs in the background, on layout switching/conversion, or when opening the chat-profile dialog.
-- StayHere starts enabled. Left-click its tray icon to pause/resume or right-click for Exit. While enabled, it prevents automatic display/system sleep and checks inactivity every 15 seconds; after three minutes without input it sends F15. It does not move the mouse, bypass locking, install autostart or directly control Teams presence. Locked/disconnected sessions receive no simulated activity.
+- Keep saved Viber profiles and show them as inactive. Viber uses ordinary Windows layout switching and the global KSwitcher Next layout cycle. No settings reset is needed.
-- Include StayHere source and reproducible GCC/CMake builds. CLI status/pause/resume/exit parsing tolerates launcher whitespace. Normal updates replace bundled StayHere and documentation while preserving personal utilities. A running old instance continues until exited; relaunch to use the updated executable.
+- Preserve Telegram Desktop and Microsoft Teams chat profiles, their shortcuts and behavior. Clipboard/image OCR and Tesseract options remain available.
-- Retain all v0.6.45 Far snippet, Utilities and tools-folder changes and the v0.6.44 newest-history-selection fix.
-- Correct the Far test fixture's working directory: a long temporary path could scroll the command line and invalidate absolute cursor-coordinate assertions. Application snippet behavior is unchanged in this release.
 
 ## Validation
-Passed isolated StayHere start/status/pause/resume/exit checks, Utilities regressions, dictionary equivalence (140,939 words), 105 sync checks, shared wheel tests, 319 native checks, 574 input checks, screenshot UI/save/registration, 54 updater checks and updater progress UI. The updater replaced a running isolated StayHere executable successfully. Final package manifests and downloaded assets are checked before completion. Real-Far spot checks confirmed expansion, caret placement and markers; the uninterrupted full interactive run remains outstanding because unrelated foreground changes cancel it. No additional Far application-code change is shipped in v0.6.46.
+Passed 653 chat-profile/UI checks including saved Viber-profile persistence, 332 native checks, 564 input checks, 105 sync checks, complete dictionary equivalence (140,939 words), wheel, StayHere, Utilities, screenshot UI/save/registration, 54 updater checks and updater progress checks. The disabled Viber OCR module is not compiled into the application. Release versions, manifest, archive and published downloads are checked during publication.
 
 ## Upgrade
 Choose **Update** in the tray menu. Legacy v0.3.0–v0.4.1 clients first receive the v0.4.2 compatibility bridge, then the current full release. v0.2.3 and earlier require manual installation.
-For manual installation, exit KSwitcher, close its configurator and screenshot editors, and extract the entire ZIP into its installation folder. Keep personal `data/`, customized dictionaries and your own tools. Find `tools/StayHere.exe` beside the executable actually running.
+For manual installation, exit KSwitcher, close its configurator and screenshot editors, and extract the entire ZIP into its installation folder. Keep personal `data/`, customized dictionaries and your own tools. Keep the three KSwitcher executables together; StayHere runs independently.
 
-Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. Keep the three KSwitcher executables together; history uses another instance of KSwitcher.exe. StayHere runs independently. The package contains no personal settings, credentials or clipboard history.
+Chat profiles remain local, are included in manual export/import and excluded from cloud synchronization. Saved Viber profiles require v0.6.49 or newer to load, even while inactive; retain a backup before downgrading. Phrase replacement synchronization requires v0.6.47 or newer on participating PCs.
+
+Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. The package contains no personal settings, credentials or clipboard history.
 
 Publish stable `release-vX.Y.Z` tags matching the executable version. Keep `v0.4.2` as the last legacy tag.

Release/SHA256SUMS.txt

@@ -1 +1 @@
-e6d26d59b18559ad226359b35cd403c68326384f8e1918d31b368cbd1110f6b9  KSwitcher-win-x64.zip
+250752bd26227f4ba43f956eda73ec6ab4d909a35300e6d1c72222892cd03db7  KSwitcher-win-x64.zip

Release/release-files.json

@@ -0,0 +1,81 @@
+{
+  "version": "0.6.50",
+  "schema": 1,
+  "files": [
+    {
+      "sha256": "3c57a24174112daa795e10d1cbbd50d405d453bc93c0fa43e83788ffcca1de51",
+      "size": 1834496,
+      "path": "KSwitcher.exe"
+    },
+    {
+      "sha256": "f569f21076f85993ed7a6d3f1fb48fbff26046b73215c2fd36d8b0afb8c0aafb",
+      "size": 1698304,
+      "path": "KSwitcher.Config.exe"
+    },
+    {
+      "sha256": "a6c3113d06185b4fd405d34618ba5fa1c0a1a9996d9288af04effb823c8c7635",
+      "size": 2885120,
+      "path": "KSwitcher.Screenshot.exe"
+    },
+    {
+      "sha256": "d3c81140cce01c26bf6cbf52aa40e0825e1fa35b9a91d1387170a65d2597082c",
+      "size": 4401,
+      "path": "LICENSE"
+    },
+    {
+      "sha256": "61e08da79c44061654015ce6b0c4061c23ee1dd18237fbf09e9bfda3c0ea2831",
+      "size": 1096,
+      "path": "json-LICENSE.txt"
+    },
+    {
+      "sha256": "41a4e4a38cb31fed543f11f92b554206ff1014b4fcd27431c518e488e5c5df1a",
+      "size": 69865,
+      "path": "README.md"
+    },
+    {
+      "sha256": "d0c022b27b9fbc2ff7b6b8bec723cc1adc4eef517202f9ff77eed5d8bea3acb9",
+      "size": 732485,
+      "path": "dictionaries/en.txt"
+    },
+    {
+      "sha256": "0bdfb0201d1803634f268cdff0993b8349d2c70e956a06dbb667c8dd65254ec5",
+      "size": 20566,
+      "path": "dictionaries/LICENSE-CC-BY-SA-4.0.txt"
+    },
+    {
+      "sha256": "3017bf44d3be9d9dfab21bd6778aa52b7947e61acf9ce2bc86b41d6e949ac311",
+      "size": 2265,
+      "path": "dictionaries/README.md"
+    },
+    {
+      "sha256": "80e6b6a27815973535f7facb636c597eb845dfee45cfabfc4e9b3341b9332849",
+      "size": 1109134,
+      "path": "dictionaries/ru.txt"
+    },
+    {
+      "sha256": "98e5b3fe7304e37705c9e5ff48b0b399ccb16e806736d21f09921b99e5f2a408",
+      "size": 1280,
+      "path": "dictionaries/sources.json"
+    },
+    {
+      "sha256": "d30e990d6ec2983c04f3644a3c61c6c668e8c542323f5931916fdd55b916eebf",
+      "size": 940799,
+      "path": "dictionaries/uk.txt"
+    },
+    {
+      "sha256": "a34b5161a8315af037e1ec71d816bfc688f7c364141d4ee2347cf0515ef0c82a",
+      "size": 993,
+      "path": "tools/README.txt"
+    },
+    {
+      "sha256": "6ef5cf64708d62b7fc63c3c793cc99188a513433ff4774cae01dc014f6664376",
+      "size": 134656,
+      "path": "tools/StayHere.exe"
+    },
+    {
+      "sha256": "ba214e2aca7405e698b3ab21ceb1f41ce088edd996b3e30e4a9d58ff496f9413",
+      "size": 2796,
+      "path": "tools/StayHere-README.md"
+    }
+  ]
+}

build.ps1

@@ -75,6 +75,10 @@ try {
         if ($LASTEXITCODE) { throw 'Input test build failed' }
         & .\build\KSwitcherInputTests.exe
         if ($LASTEXITCODE) { throw 'Input tests failed' }
+        & $compiler @common tests/chat_profiles.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.o build/sync.o build/ocr.o build/richtext.o build/update.o build/screenshot.o build/screenshot_launcher.o build/screenshot_activation.o build/screenshot_notifications.o build/app.o build/configuration.o build/ui.o build/screenshot-res.o @libs -static -s -o build/KSwitcherChatProfileTests.exe
+        if ($LASTEXITCODE) { throw 'Chat profile test build failed' }
+        & .\build\KSwitcherChatProfileTests.exe
+        if ($LASTEXITCODE) { throw 'Chat profile tests failed' }
         & $compiler @common tests/screenshot_ui.cpp build/core.o build/platform.o build/ocr.o build/screenshot-res.o @libs -static -s -o build/KSwitcherScreenshotUITests.exe
         if ($LASTEXITCODE) { throw 'Screenshot UI test build failed' }
         & .\build\KSwitcherScreenshotUITests.exe

resources/app.rc

@@ -9,8 +9,8 @@ IDC_SCREENSHOT_PENCIL CURSOR "icons/lucide/pencil.cur"
 1 RT_MANIFEST "app.manifest"
 201 RCDATA "update.ps1"
 1 VERSIONINFO
- FILEVERSION 0,6,46,0
+ FILEVERSION 0,6,50,0
- PRODUCTVERSION 0,6,46,0
+ PRODUCTVERSION 0,6,50,0
  FILEOS VOS_NT_WINDOWS32
  FILETYPE VFT_APP
 BEGIN
@@ -20,7 +20,7 @@ BEGIN
   BEGIN
    VALUE "FileDescription", "KSwitcher — native keyboard and clipboard utility"
    VALUE "ProductName", "KSwitcher"
-   VALUE "FileVersion", "0.6.46"
+   VALUE "FileVersion", "0.6.50"
   END
  END
  BLOCK "VarFileInfo"

resources/portable-tools-README.txt

@@ -1,14 +1,14 @@
 KSwitcher portable utilities
 
 Put your trusted portable .exe utilities directly in this tools folder,
-beside this README.txt. Right-click the KSwitcher tray icon and open Utilities.
+beside this README.txt. Right-click the KSwitcher tray icon and open Tools.
-For example: tools/StayHere.exe appears as Utilities > StayHere.
+For example: tools/StayHere.exe appears as Tools > StayHere.
 
 The list refreshes each time the tray menu opens. Subfolders and shortcuts
 are not listed. Utilities start only when you choose them, with this folder
 as their working directory. Closing KSwitcher does not close a utility.
 
-StayHere.exe is bundled. Choose Utilities > StayHere to start it; it starts
+StayHere.exe is bundled. Choose Tools > StayHere to start it; it starts
 enabled, prevents automatic sleep, and sends F15 after 3 minutes of inactivity.
 Left-click its tray icon to pause/resume; right-click for Exit. See StayHere-README.md.
 It does not start automatically with KSwitcher or bypass Windows locking.

src/app.cpp

@@ -958,6 +958,31 @@ void App::keyboard(const KBDLLHOOKSTRUCT &k, UINT mods)
             }
     }
 }
+void App::refreshChatContext()
+{
+    HWND target = GetForegroundWindow();
+    chatWindow = target;
+    activeChatTitle = chatTitle(target);
+    activeChat = settings.chatCycles.empty() ? L"" : windowChatKey(target);
+}
+void App::switchChatLayout(bool reverse)
+{
+    HWND target = chatWindow;
+    auto key = activeChat;
+    if (!target || target != GetForegroundWindow() || key.empty() || windowChatKey(target) != key ||
+        !settings.chatCycles.contains(key) || busy.exchange(true)) return;
+    auto cycle = chatCycle(settings, key, layouts);
+    auto available = layouts;
+    resetInput();
+    enqueue([this, target, key, cycle, available, reverse]
+    {
+        struct Reset { std::atomic<bool> &busy; ~Reset() { busy = false; } } reset{busy};
+        auto valid = [&] { return GetForegroundWindow() == target && windowChatKey(target) == key; };
+        if (!valid()) return;
+        auto next = nextChatLayout(cycle, available, windowLayout(target), reverse);
+        if (next) switchWindowLayout(target, next, valid);
+    });
+}
 bool App::handleKeyboard(const KBDLLHOOKSTRUCT &key, bool down, UINT mods)
 {
     // Filter before capture, hotkey latching and typing history. External injected
@@ -1008,6 +1033,23 @@ bool App::handleKeyboard(const KBDLLHOOKSTRUCT &key, bool down, UINT mods)
             return 1; // Record the chord without executing a global shortcut or typing into an editor.
         }
     }
+    bool chatEnabled = false;
+    if (down && ChatSwitchHook::candidate(key.vkCode, mods) && !settings.chatCycles.empty() &&
+        !isHotkey(key.vkCode, mods))
+    {
+        refreshChatContext();
+        chatEnabled = !activeChat.empty() && settings.chatCycles.contains(activeChat);
+    }
+    const int chatAction = chatSwitchHook.update(key.vkCode, down, mods, chatEnabled);
+    if (chatAction)
+    {
+        if (chatAction > 0)
+        {
+            chord(0xE8); // Suppress the shell's bare Alt/Win action.
+            switchChatLayout(chatAction == 2); // Captures this chat before another keyboard event.
+        }
+        return true;
+    }
     if (down)
     {
         auto action = hotkeyHook.update(key.vkCode, true, mods, hookBindings);
@@ -1215,8 +1257,9 @@ void App::transform(int command, int snippet)
         available = layouts;
         version = inputVersion;
     }
+    const auto requestedChat = config.chatCycles.empty() ? L"" : windowChatKey(target);
     enqueue(
-        [this, target, recent, previous, config, available, version, command, snippet, attempt, manual, requestedAt, preDeferred]
+        [this, target, recent, previous, config, available, version, command, snippet, attempt, manual, requestedAt, preDeferred, requestedChat]() mutable
         {
             struct BusyReset
             {
@@ -1231,6 +1274,8 @@ void App::transform(int command, int snippet)
                         b = false;
                 }
             } reset{busy, window, preDeferred};
+            auto effectiveChat = requestedChat;
+            config.cycle = chatCycle(config, effectiveChat, available);
             auto start = GetTickCount64();
             std::wstring reason = L"cancelled-before-selection";
             std::wstring text, result, expected, actual, verification = L"not-attempted";
@@ -1520,9 +1565,9 @@ void App::transform(int command, int snippet)
                                 for (int i = 0; i < (int)available.size(); ++i)
                                     if (available[i].id == id && available[i].convertible)
                                         cycle.push_back(i);
-                            if (cycle.size() < 2)
+                            if (cycle.empty())
                             {
-                                reason = L"cycle-has-fewer-than-two-layouts";
+                                reason = L"cycle-has-no-layouts";
                                 if (automatic && tx.valid())
                                     chord(VK_RIGHT);
                                 return;
@@ -1839,7 +1884,7 @@ void App::trayMenu()
     if (utilities.empty())
         AppendMenuW(utilityMenu, MF_STRING | MF_GRAYED, 0,
                     utilitiesError ? L"Cannot read tools folder" : L"No utilities in tools folder");
-    AppendMenuW(menu, MF_POPUP, (UINT_PTR)utilityMenu, L"&Utilities");
+    AppendMenuW(menu, MF_POPUP, (UINT_PTR)utilityMenu, L"&Tools");
     AppendMenuW(menu, MF_SEPARATOR, 0, nullptr);
     AppendMenuW(menu, MF_STRING | (settings.awake ? MF_CHECKED : 0), 14, L"Keep screen a&wake");
     HMENU pause = CreatePopupMenu();

src/app.h

@@ -3,6 +3,7 @@
 #include "storage.h"
 #include "update.h"
 #include "sync.h"
+#include "chat_context.h"
 #include <atomic>
 #include <condition_variable>
 #include <deque>
@@ -134,6 +135,11 @@ class App
     int previousAttemptCommand{}, repeatAttempts{};
     std::vector<std::pair<int, Hotkey>> hookBindings;
     HotkeyHook hotkeyHook;
+    ChatSwitchHook chatSwitchHook;
+    HWND chatWindow{};
+    std::wstring activeChat, activeChatTitle;
+    void refreshChatContext();
+    void switchChatLayout(bool reverse);
     HWND typingTarget{};
     bool autoPending{};
     int snippetPending = -1;

src/autocorrect.cpp

@@ -257,7 +257,7 @@ std::optional<AutoSuggestion> AutoCorrector::suggest(const std::wstring &typed,
     {
         auto replacement = settings.autoReplacements.find(small);
         if (replacement != settings.autoReplacements.end() &&
-            replacement->second.find_first_not_of(alphabet) == small.npos)
+            replacement->second.find_first_not_of(alphabet + L" ") == small.npos)
             return sameLayout(replacement->second);
     }
     auto personal = [&](const std::wstring &language, const std::wstring &candidate)

src/chat_context.h

@@ -0,0 +1,93 @@
+#pragma once
+#include "platform.h"
+#include <algorithm>
+
+namespace ks
+{
+struct ChatSwitchHook
+{
+    bool pressed[256]{};
+    static bool candidate(UINT key, UINT mods)
+    {
+        bool shift = key == VK_SHIFT || key == VK_LSHIFT || key == VK_RSHIFT;
+        bool alt = key == VK_MENU || key == VK_LMENU || key == VK_RMENU;
+        return (key == VK_SPACE && (mods == MOD_WIN || mods == (MOD_WIN | MOD_SHIFT))) ||
+            (shift && mods == MOD_ALT) || (alt && mods == MOD_SHIFT);
+    }
+    // 1 forward, 2 backward, -1 consumed repeat/release, 0 ordinary input.
+    int update(UINT key, bool down, UINT mods, bool enabled)
+    {
+        if (key >= 256) return 0;
+        if (pressed[key]) { if (!down) pressed[key] = false; return -1; }
+        if (!down || !enabled) return 0;
+        if (!candidate(key, mods)) return 0;
+        pressed[key] = true;
+        return key == VK_SPACE && (mods & MOD_SHIFT) ? 2 : 1;
+    }
+};
+inline std::wstring chatTitle(HWND window)
+{
+    wchar_t title[1024]{};
+    if (!window) return {};
+    int length = GetWindowTextW(window, title, std::size(title));
+    if (!length || length >= (int)std::size(title) - 1) return {};
+    return title;
+}
+inline std::wstring chatKey(std::wstring process, std::wstring title)
+{
+    process = lower(process);
+    if (process.ends_with(L".exe")) process.resize(process.size() - 4);
+    while (!title.empty() && (title.front() == 0x200e || title.front() == 0x200f)) title.erase(0, 1);
+    if (process == L"telegram")
+    {
+        // Telegram's unread badge is not part of the contact name.
+        auto badge = title.rfind(L" \u2013 (");
+        if (badge != title.npos && title.back() == L')')
+        {
+            auto digits = title.substr(badge + 4, title.size() - badge - 5);
+            if (!digits.empty() && digits.find_first_not_of(L"0123456789") == digits.npos)
+                title.resize(badge);
+        }
+        if (title.empty() || title == L"Telegram" || title.starts_with(L"Telegram (")) return {};
+    }
+    else if (process == L"ms-teams")
+    {
+        // Only the observed chat title format; meetings/search are not chats.
+        const std::wstring prefix = L"Chat | ", suffix = L" | Microsoft Teams";
+        if (!title.starts_with(prefix) || !title.ends_with(suffix) ||
+            title.size() <= prefix.size() + suffix.size()) return {};
+        title = title.substr(prefix.size(), title.size() - prefix.size() - suffix.size());
+        if (title.empty()) return {};
+    }
+    else return {};
+    return process + L"\n" + title;
+}
+inline std::wstring windowChatKey(HWND window)
+{
+    return window ? chatKey(processName(window), chatTitle(window)) : L"";
+}
+inline std::vector<std::wstring> chatCycle(const Settings &settings, const std::wstring &key,
+                                         const std::vector<Layout> &layouts)
+{
+    auto found = settings.chatCycles.find(key);
+    if (key.empty() || found == settings.chatCycles.end()) return settings.cycle;
+    std::vector<std::wstring> result;
+    for (const auto &id : found->second)
+        if (std::any_of(layouts.begin(), layouts.end(), [&](const Layout &l) { return l.id == id; }))
+            result.push_back(id);
+    return result.empty() ? settings.cycle : result;
+}
+inline HKL nextChatLayout(const std::vector<std::wstring> &cycle, const std::vector<Layout> &layouts,
+                          HKL current, bool reverse)
+{
+    std::vector<HKL> handles;
+    for (const auto &id : cycle)
+        for (const auto &layout : layouts)
+            if (layout.id == id) handles.push_back(layout.handle);
+    if (handles.empty()) return nullptr;
+    auto found = std::find(handles.begin(), handles.end(), current);
+    if (found == handles.end()) return handles.front();
+    auto next = (size_t(found - handles.begin()) + (reverse ? handles.size() - 1 : 1)) % handles.size();
+    return handles[next];
+}
+}

src/core.h

@@ -76,6 +76,8 @@ struct Settings
                  translit = L"Ctrl+Alt+Shift+T", undo = L"Ctrl+Alt+Shift+Z", clipboard = L"Win+V",
                  screenshot = L"Win+Shift+S";
     std::vector<std::wstring> cycle, direct, directIds;
+    // Exact application + visible chat name; an absent entry uses the global cycle.
+    std::map<std::wstring, std::vector<std::wstring>> chatCycles;
     std::vector<std::wstring> excluded{L"KeePass", L"KeePassXC", L"1Password", L"Bitwarden"};
     std::vector<Snippet> snippets;
     std::vector<std::wstring> snippetTombstones;

src/storage.cpp

@@ -61,6 +61,25 @@ bool validId(const std::wstring &id)
 } // namespace
 void validateSettings(const Settings &s)
 {
+    if (s.chatCycles.size() > 1000) throw std::runtime_error("Too many chat language profiles");
+    for (const auto &[key, cycle] : s.chatCycles)
+    {
+        auto separator = key.find(L'\n');
+        if (separator == key.npos || separator + 1 == key.size() || key.size() > 1024 ||
+            key.find(L'\n', separator + 1) != key.npos || key.find(L'\r') != key.npos ||
+            (key.substr(0, separator) != L"telegram" && key.substr(0, separator) != L"ms-teams" && key.substr(0, separator) != L"viber"))
+            throw std::runtime_error("Invalid chat language profile");
+        if (cycle.empty() || cycle.size() > 64) throw std::runtime_error("Select at least one chat language");
+        std::vector<std::wstring> seen;
+        for (const auto &id : cycle)
+        {
+            if (id.size() != 12 || !id.starts_with(L"win:") ||
+                id.find_first_not_of(L"0123456789abcdefABCDEF", 4) != id.npos ||
+                std::find(seen.begin(), seen.end(), id) != seen.end())
+                throw std::runtime_error("Invalid or duplicate chat layout");
+            seen.push_back(id);
+        }
+    }
     if (s.tesseractPath.size() > 32700 || s.tesseractPath.find_first_of(L"\r\n\"") != s.tesseractPath.npos)
         throw std::runtime_error("Invalid Tesseract executable path");
     if (s.tesseractLanguages.empty() || s.tesseractLanguages.size() > 128 ||
@@ -118,9 +137,11 @@ void validateSettings(const Settings &s)
                               L"абвгдеёжзийклмнопрстуфхцчшщъыьэюя"})
             valid |= !from.empty() && !to.empty() && from.size() <= 32 && to.size() <= 32 &&
                      from == lower(from) && to == lower(to) && from != to &&
-                     from.find_first_not_of(alphabet) == from.npos && to.find_first_not_of(alphabet) == to.npos;
+                     from.find_first_not_of(alphabet) == from.npos &&
+                     to.find_first_not_of(std::wstring(alphabet) + L" ") == to.npos &&
+                     to.front() != L' ' && to.back() != L' ' && to.find(L"  ") == to.npos;
         if (!valid)
-            throw std::runtime_error("Replacement pairs must be different lowercase words of 1-32 letters in the same language");
+            throw std::runtime_error("Use a lowercase typo of 1-32 letters and a different correction of 1-32 characters in the same language. Single spaces between correction words are allowed.");
     }
     for (const auto &[language, words] : s.autoWords)
     {
@@ -232,6 +253,16 @@ Settings decodeSettings(const Bytes &bytes, const std::vector<Layout> &layouts)
                 s.cycle.push_back(w);
         }
     }
+    if (j.contains("chatCycles"))
+    {
+        if (!j.at("chatCycles").is_object()) throw std::runtime_error("Invalid chat profiles object");
+        for (const auto &[key, cycle] : j.at("chatCycles").items())
+        {
+            if (!cycle.is_array() || cycle.empty()) throw std::runtime_error("Empty chat language profile");
+            for (const auto &id : cycle)
+                s.chatCycles[wide(key)].push_back(wide(id.get<std::string>()));
+        }
+    }
     if (j.contains("layoutHotkeys"))
     {
         std::fill(s.direct.begin(), s.direct.end(), L"");
@@ -288,6 +319,9 @@ Bytes encodeSettings(const Settings &s)
               {"screenshotHotkey", utf8(s.screenshot)},
               {"screenshotAutoOpenEditor", s.screenshotAutoOpenEditor}};
     j["layouts"] = Json::array();
+    j["chatCycles"] = Json::object();
+    for (const auto &[key, cycle] : s.chatCycles)
+        for (const auto &id : cycle) j["chatCycles"][utf8(key)].push_back(utf8(id));
     for (auto &id : s.cycle)
         j["layouts"].push_back(utf8(id));
     j["autoCorrectLayout"] = s.autoCorrect;

src/sync.cpp

@@ -219,7 +219,8 @@ Bytes sharedSyncSettings(const Settings &s)
         return a.at("layoutId").get<std::string>() < b.at("layoutId").get<std::string>();
     });
     for (auto key : {"startWithSystem", "autostartAsAdministrator", "tesseractPath", "useTesseract",
-        "historyEnabled", "maxItems", "maxTotalMegabytes", "maxImageMegabytes", "writeLog", "preventScreenLock"}) j.erase(key);
+        "historyEnabled", "maxItems", "maxTotalMegabytes", "maxImageMegabytes", "writeLog", "preventScreenLock",
+        "chatCycles"}) j.erase(key); // Chat names and matching rules stay on this PC.
     return bytes(canonicalProfile(j));
 }
 Settings restoreSyncSettings(const Bytes &shared, const Settings &local, const std::vector<Layout> &layouts, bool keepLocalLayouts)

src/ui.cpp

@@ -967,7 +967,129 @@ struct SettingsView
     std::vector<int> order;
     int selection = -1;
     bool filling{};
+    std::vector<std::vector<HWND>> pages;
 };
+void selectSettingsPage(HWND w, SettingsView *v)
+{
+    int selected = TabCtrl_GetCurSel(GetDlgItem(w, 260));
+    for (size_t page = 0; page < v->pages.size(); ++page)
+        for (HWND child : v->pages[page]) ShowWindow(child, (int)page == selected ? SW_SHOWNA : SW_HIDE);
+    InvalidateRect(w, nullptr, TRUE);
+}
+struct ChatLanguagesView
+{
+    HWND parent{};
+    SettingsView *settings{};
+    std::vector<std::wstring> keys;
+};
+void fillChatLanguages(HWND w, ChatLanguagesView *v)
+{
+    int index = (int)SendDlgItemMessageW(w, 710, LB_GETCURSEL, 0, 0);
+    if (index < 0 || index >= (int)v->keys.size()) return;
+    const auto &draft = v->settings->draft;
+    auto saved = draft.chatCycles.find(v->keys[index]);
+    const auto &cycle = saved == draft.chatCycles.end() ? draft.cycle : saved->second;
+    for (size_t i = 0; i < v->settings->order.size(); ++i)
+    {
+        auto &layout = v->settings->app->layouts[v->settings->order[i]];
+        SendDlgItemMessageW(w, 711, LB_SETSEL,
+            std::find(cycle.begin(), cycle.end(), layout.id) != cycle.end(), i);
+    }
+    value(w, 712, saved == draft.chatCycles.end() ? L"No profile yet. Select the languages for this chat." :
+        L"Saved profile. Select languages, or remove it to use the defaults.");
+    EnableWindow(GetDlgItem(w, 713), saved != draft.chatCycles.end());
+}
+LRESULT CALLBACK chatLanguagesProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
+{
+    auto *v = (ChatLanguagesView *)GetWindowLongPtrW(w, GWLP_USERDATA);
+    if (!v) return DefWindowProcW(w, msg, wp, lp);
+    try
+    {
+        if (msg == WM_COMMAND)
+        {
+            int id = LOWORD(wp);
+            if (id == 710 && HIWORD(wp) == LBN_SELCHANGE) { fillChatLanguages(w, v); return 0; }
+            if (id == IDOK || id == 713)
+            {
+                int selected = (int)SendDlgItemMessageW(w, 710, LB_GETCURSEL, 0, 0);
+                if (selected < 0 || selected >= (int)v->keys.size())
+                    throw std::runtime_error("Open a Telegram or Teams chat, then reopen this dialog. Viber OCR is disabled.");
+                auto next = v->settings->draft;
+                if (id == 713) next.chatCycles.erase(v->keys[selected]);
+                else
+                {
+                    std::vector<std::wstring> cycle;
+                    for (size_t i = 0; i < v->settings->order.size(); ++i)
+                        if (SendDlgItemMessageW(w, 711, LB_GETSEL, i, 0) > 0)
+                            cycle.push_back(v->settings->app->layouts[v->settings->order[i]].id);
+                    if (cycle.empty()) throw std::runtime_error("Select at least one language.");
+                    next.chatCycles[v->keys[selected]] = std::move(cycle);
+                }
+                validateSettings(next);
+                v->settings->draft.chatCycles = std::move(next.chatCycles);
+                DestroyWindow(w);
+                return 0;
+            }
+            if (id == IDCANCEL) { DestroyWindow(w); return 0; }
+        }
+        if (msg == WM_CLOSE) { DestroyWindow(w); return 0; }
+        if (msg == WM_DPICHANGED) { resizeForDpi(w, wp, lp); return 0; }
+        if (msg == WM_NCDESTROY)
+        {
+            EnableWindow(v->parent, TRUE);
+            SetForegroundWindow(v->parent);
+            disposeFont(w);
+            delete v;
+            SetWindowLongPtrW(w, GWLP_USERDATA, 0);
+        }
+    }
+    catch (const std::exception &e) { error(w, e); }
+    return DefWindowProcW(w, msg, wp, lp);
+}
+void showChatLanguages(HWND parent, SettingsView *settings)
+{
+    std::set<std::wstring> keys;
+    for (const auto &[key, cycle] : settings->draft.chatCycles) keys.insert(key);
+    struct Context { std::set<std::wstring> &keys; const Settings &settings; } context{keys, settings->draft};
+    EnumWindows([](HWND candidate, LPARAM context) -> BOOL
+    {
+        if (!IsWindowVisible(candidate)) return TRUE;
+        auto &data = *(Context *)context;
+        auto key = windowChatKey(candidate);
+        if (!key.empty()) data.keys.insert(std::move(key));
+        return TRUE;
+    }, (LPARAM)&context);
+    HWND w = makeWindow(*settings->app, L"KSwitcher.ChatLanguages", L"Languages for a chat", chatLanguagesProc, 640, 524);
+    auto *v = new ChatLanguagesView{parent, settings, {keys.begin(), keys.end()}};
+    SetWindowLongPtrW(w, GWLP_HWNDPARENT, (LONG_PTR)parent);
+    SetWindowLongPtrW(w, GWLP_USERDATA, (LONG_PTR)v);
+    label(w, L"Telegram / Teams profiles; saved Viber profiles are inactive", 18, 16, 604);
+    control(w, L"LISTBOX", L"", WS_TABSTOP | WS_VSCROLL | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT | WS_BORDER,
+            710, 18, 44, 604, 140);
+    for (const auto &key : v->keys)
+    {
+        auto split = key.find(L'\n');
+        auto name = std::wstring(key.starts_with(L"telegram\n") ? L"Telegram: " : key.starts_with(L"viber\n") ? L"Viber (inactive): " : L"Teams: ") + key.substr(split + 1);
+        SendDlgItemMessageW(w, 710, LB_ADDSTRING, 0, (LPARAM)name.c_str());
+    }
+    control(w, L"STATIC", L"Open a chat, then reopen this dialog to add it.", 0, 712, 18, 194, 604, 26);
+    label(w, L"Click languages to include (saved in the order shown)", 18, 228, 604);
+    control(w, L"LISTBOX", L"", WS_TABSTOP | WS_VSCROLL | LBS_MULTIPLESEL | LBS_NOINTEGRALHEIGHT | WS_BORDER,
+            711, 18, 256, 604, 132);
+    for (int i : settings->order)
+        SendDlgItemMessageW(w, 711, LB_ADDSTRING, 0, (LPARAM)settings->app->layouts[i].name.c_str());
+    label(w, L"Applies to Alt+Shift, Win+Space and KSwitcher Next layout.", 18, 402, 604);
+    label(w, L"Matched by chat name. Identical names share a profile. Then Save settings.", 18, 430, 604);
+    button(w, L"&Remove profile", 713, 18, 476, 170);
+    button(w, L"&Use languages", IDOK, 300, 476, 170);
+    button(w, L"&Cancel", IDCANCEL, 486, 476, 136);
+    EnableWindow(GetDlgItem(w, IDOK), !keys.empty());
+    EnableWindow(GetDlgItem(w, 713), FALSE);
+    if (!keys.empty()) { SendDlgItemMessageW(w, 710, LB_SETCURSEL, 0, 0); fillChatLanguages(w, v); }
+    EnableWindow(parent, FALSE);
+    showRequestedWindow(w);
+    SetFocus(GetDlgItem(w, 710));
+}
 void collectLayout(HWND w, SettingsView *v)
 {
     if (v->selection < 0 || v->selection >= (int)v->order.size())
@@ -1285,7 +1407,7 @@ void showAutoOptions(HWND parent, SettingsView *v)
     label(w, L"Enter punctuation without spaces or separators. These characters are kept.", 18, 530, 525);
     checkbox(w, L"Use custom &replacements (take priority over dictionaries)", 414, 18, 562, 524);
     check(w, 414, v->draft.autoReplace);
-    label(w, L"One pair per line: typo=correction (same language, letters only)", 18, 592, 525);
+    label(w, L"One pair per line: typo=correction (same language; correction may contain spaces)", 18, 592, 525);
     edit(w, 416, 18, 618, 524, 70, ES_MULTILINE | WS_VSCROLL | ES_AUTOVSCROLL | ES_WANTRETURN);
     std::wstring pairs;
     for (const auto &[from, to] : v->draft.autoReplacements) pairs += from + L"=" + to + L"\r\n";
@@ -1461,6 +1583,13 @@ LRESULT CALLBACK settingsProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
     {
         switch (msg)
         {
+        case WM_NOTIFY:
+            if (((NMHDR *)lp)->idFrom == 260 && ((NMHDR *)lp)->code == TCN_SELCHANGE)
+            {
+                selectSettingsPage(w, v);
+                return 0;
+            }
+            break;
         case WM_COMMAND:
         {
             int id = LOWORD(wp);
@@ -1477,6 +1606,7 @@ LRESULT CALLBACK settingsProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             }
             if (id == 257) { showOcrOptions(w, v); return 0; }
             if (id == 258) { showSyncOptions(w, *v->app); return 0; }
+            if (id == 259) { collectLayout(w, v); showChatLanguages(w, v); return 0; }
             if (id == 230)
             {
                 collectLayout(w, v);
@@ -1815,56 +1945,94 @@ void showSettings(App &app, bool visible)
         activateWindow(target);
         return;
     }
-    HWND w = makeWindow(app, L"KSwitcher.Settings", L"KSwitcher settings", settingsProc, 780, 660, 0, false);
+    HWND w = makeWindow(app, L"KSwitcher.Settings", L"KSwitcher settings", settingsProc, 720, 510, 0, false);
     app.settingsWindow = w;
-    label(w, L"Text conversion", 18, 16);
+    auto *v = (SettingsView *)GetWindowLongPtrW(w, GWLP_USERDATA);
-    checkbox(w, L"Con&vert recently typed text when nothing is selected", 201, 18, 43, 390);
+    INITCOMMONCONTROLSEX tabsInit{sizeof(tabsInit), ICC_TAB_CLASSES};
-    checkbox(w, L"Switch Windows input &layout after conversion", 202, 18, 70, 390);
+    InitCommonControlsEx(&tabsInit);
-    checkbox(w, L"Record clip&board history", 203, 18, 106);
+    HWND tabs = control(w, WC_TABCONTROLW, L"", WS_TABSTOP, 260, 18, 16, 684, 32);
-    checkbox(w, L"Start with &Windows", 204, 18, 133);
+    const wchar_t *tabNames[] = {L"General", L"Languages", L"Shortcuts", L"Clipboard", L"Tools"};
-    checkbox(w, L"Start with Windows as ad&ministrator", 206, 18, 160, 395);
+    for (int i = 0; i < 5; ++i)
-    checkbox(w, L"&Keep screen awake", 205, 18, 184, 210);
+    {
-    checkbox(w, L"Write lo&g", 208, 240, 184, 160);
+        TCITEMW item{}; item.mask = TCIF_TEXT; item.pszText = const_cast<wchar_t *>(tabNames[i]);
-    label(w, L"Click a shortcut and press the desired keys", 420, 16, 350);
+        TabCtrl_InsertItem(tabs, i, &item);
-    const wchar_t *names[] = {L"Next layout", L"Change case", L"Transliterate", L"Undo",
+    }
-                              L"Clipboard history", L"Screen capture"};
+    size_t start = windowLayoutState(w)->controls.size();
+    auto page = [&]
+    {
+        std::vector<HWND> children;
+        const auto &controls = windowLayoutState(w)->controls;
+        for (size_t i = start; i < controls.size(); ++i) children.push_back(controls[i].first);
+        v->pages.push_back(std::move(children));
+        start = controls.size();
+    };
+    label(w, L"Text conversion", 24, 76, 650);
+    checkbox(w, L"Con&vert recently typed text when nothing is selected", 201, 24, 110, 660);
+    checkbox(w, L"Switch Windows input &layout after conversion", 202, 24, 146, 660);
+    checkbox(w, L"Automatic correction (e&xperimental)", 207, 24, 182, 390);
+    button(w, L"&Correction options...", 255, 454, 180, 230);
+    label(w, L"Windows integration", 24, 254, 650);
+    checkbox(w, L"Start with &Windows", 204, 24, 288, 660);
+    checkbox(w, L"Start with Windows as ad&ministrator", 206, 24, 324, 660);
+    checkbox(w, L"&Keep screen awake", 205, 24, 360, 660);
+    page();
+
+    label(w, L"Default language cycle — top to bottom", 24, 76, 650);
+    control(w, L"LISTBOX", L"", WS_TABSTOP | WS_VSCROLL | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT | WS_BORDER,
+            220, 24, 108, 410, 240);
+    button(w, L"Move u&p", 232, 454, 108, 110);
+    button(w, L"Move &down", 233, 574, 108, 110);
+    checkbox(w, L"&Include in cycle", 230, 454, 154, 230);
+    label(w, L"Direct layout shortcut", 454, 206, 230);
+    hotkeyEdit(app, w, 231, 454, 234, 230);
+    label(w, L"Backspace / Delete clears it", 454, 270, 230);
+    button(w, L"Re&fresh layouts", 253, 454, 322, 230);
+    button(w, L"Languages for a &chat...", 259, 24, 378, 230);
+    label(w, L"Chat languages: Telegram / Teams. Viber OCR disabled.", 272, 382, 412);
+    page();
+
+    label(w, L"Click a shortcut field and press the desired keys", 24, 76, 660);
+    const wchar_t *names[] = {L"Next layout", L"Change case", L"Transliterate", L"Undo", L"Clipboard history", L"Screen capture"};
     for (int i = 0; i < 6; ++i)
     {
-        label(w, names[i], 420, 48 + i * 30, 115);
+        label(w, names[i], 24, 116 + i * 40, 180);
-        hotkeyEdit(app, w, 210 + i, 540, 44 + i * 30, 220);
+        hotkeyEdit(app, w, 210 + i, 230, 112 + i * 40, 454);
     }
-    checkbox(w, L"Open editor after screen capt&ure", 209, 420, 224, 340);
+    checkbox(w, L"Open editor after screen capt&ure", 209, 24, 378, 660);
-    checkbox(w, L"Automatic correction (e&xperimental)", 207, 18, 210, 395);
+    page();
-    label(w, L"Layout cycle — top to bottom", 18, 240, 400);
+
-    control(w, L"LISTBOX", L"", WS_TABSTOP | WS_VSCROLL | LBS_NOTIFY | LBS_NOINTEGRALHEIGHT | WS_BORDER, 220,
+    checkbox(w, L"Record clip&board history", 203, 24, 80, 660);
-            18, 262, 470, 172);
+    label(w, L"History limits", 24, 140, 660);
-    button(w, L"Move u&p", 232, 504, 262, 120);
+    label(w, L"Items", 24, 176, 180);
-    button(w, L"Move &down", 233, 632, 262, 128);
+    label(w, L"Total MiB", 254, 176, 180);
-    checkbox(w, L"&Include in cycle", 230, 504, 300, 240);
+    label(w, L"Per item MiB", 484, 176, 180);
-    label(w, L"Direct layout shortcut", 504, 332, 240);
+    edit(w, 240, 24, 204, 200);
-    hotkeyEdit(app, w, 231, 504, 356, 256);
+    edit(w, 241, 254, 204, 200);
-    label(w, L"Backspace / Delete clears a shortcut", 504, 382, 256);
+    edit(w, 242, 484, 204, 200);
-    button(w, L"Re&fresh layouts", 253, 504, 408, 150);
+    button(w, L"Clear &history...", 254, 24, 258, 200);
-    label(w, L"History limits", 18, 444);
+    label(w, L"Exclude applications (process names, comma-separated)", 24, 330, 660);
-    label(w, L"Items", 18, 478, 50);
+    edit(w, 243, 24, 362, 660);
-    edit(w, 240, 70, 474, 90);
+    page();
-    label(w, L"Total MiB", 180, 478, 75);
+
-    edit(w, 241, 260, 474, 90);
+    label(w, L"Additional tools and preferences", 24, 76, 660);
-    label(w, L"Per item MiB", 370, 478, 100);
+    button(w, L"S&nippets...", 252, 24, 116, 210);
-    edit(w, 242, 475, 474, 80);
+    label(w, L"Manage reusable text and expansion triggers.", 254, 120, 430);
-    button(w, L"Clear &history…", 254, 580, 474, 180);
+    button(w, L"OCR op&tions...", 257, 24, 180, 210);
-    label(w, L"Exclude applications (process names, comma-separated)", 18, 516, 700);
+    label(w, L"Configure text recognition from images.", 254, 184, 430);
-    edit(w, 243, 18, 544, 742);
+    button(w, L"S&ync...", 258, 24, 244, 210);
-    button(w, L"&Auto-correction options…", 255, 18, 575, 240);
+    label(w, L"Synchronize preferences between computers.", 254, 248, 430);
-    button(w, L"View l&og…", 256, 278, 575, 220);
+    button(w, L"View l&og...", 256, 24, 308, 210);
-    button(w, L"OCR op&tions…", 257, 518, 575, 242);
+    label(w, L"Inspect recent operations and diagnostics.", 254, 312, 430);
-    button(w, L"Impo&rt settings…", 250, 18, 606, 145);
+    checkbox(w, L"Write lo&g", 208, 24, 378, 210);
-    button(w, L"&Export settings…", 251, 173, 606, 145);
+    page();
-    button(w, L"S&nippets…", 252, 328, 606, 110);
+
-    button(w, L"S&ync...", 258, 448, 606, 90);
+    button(w, L"Impo&rt...", 250, 18, 466, 125);
-    button(w, L"&Save", IDOK, 548, 606, 100);
+    button(w, L"&Export...", 251, 155, 466, 125);
-    button(w, L"&Cancel", IDCANCEL, 660, 606, 100);
+    button(w, L"&Save", IDOK, 490, 466, 100);
-    fillSettings(w, (SettingsView *)GetWindowLongPtrW(w, GWLP_USERDATA));
+    button(w, L"&Cancel", IDCANCEL, 602, 466, 100);
+    fillSettings(w, v);
+    TabCtrl_SetCurSel(tabs, 0);
+    selectSettingsPage(w, v);
     if (visible)
     {
         showRequestedWindow(w);

src/update.h

@@ -2,7 +2,7 @@
 #include "platform.h"
 namespace ks
 {
-inline constexpr wchar_t AppVersion[] = L"0.6.46";
+inline constexpr wchar_t AppVersion[] = L"0.6.50";
 inline constexpr UINT UpdateMessage = WM_APP + 7;
 inline constexpr UINT UpdateCheckIntervalMs = 6 * 60 * 60 * 1000;
 inline constexpr UINT UpdateNotificationRetryMs = 5 * 60 * 1000;

src/viber_ocr.inc

@@ -0,0 +1,82 @@
+// Experimental Viber header OCR; never called on the keyboard hook thread.
+#include <uiautomation.h>
+#include <mutex>
+namespace ks {
+namespace {
+std::mutex viberMutex;
+HWND viberWindow{};
+std::wstring viberKey;
+ULONGLONG viberTime{};
+std::wstring elementClass(IUIAutomationElement *e) {
+ BSTR s{}; e->get_CurrentClassName(&s); std::wstring out=s?s:L""; SysFreeString(s); return out;
+}
+bool findViberHeader(IUIAutomationTreeWalker *walker,IUIAutomationElement *e,RECT &pane,RECT &search,int depth,int &budget) {
+ if(depth>5 || --budget<0) return false;
+ bool stack=elementClass(e).starts_with(L"StackView_");
+ Com<IUIAutomationElement> child;walker->GetFirstChildElement(e,child.out());
+ bool found=false,info=false;
+ while(child.p && --budget>0) {
+  if(stack) {
+   auto name=elementClass(child.p);
+   if(name.starts_with(L"SearchButton_")){child->get_CurrentBoundingRectangle(&search);found=true;}
+   if(name.starts_with(L"InfoButton_")) info=true;
+  } else if(findViberHeader(walker,child.p,pane,search,depth+1,budget)) return true;
+  Com<IUIAutomationElement> next;walker->GetNextSiblingElement(child.p,next.out());
+  child.p->Release();child.p=next.p;next.p=nullptr;
+ }
+ if(found && info){e->get_CurrentBoundingRectangle(&pane);return true;}
+ return false;
+}
+Pixels viberHeader(HWND window) {
+ if(!IsWindow(window)||IsIconic(window)) return {};
+ Com<IUIAutomation2> automation;
+ check(CoCreateInstance(CLSID_CUIAutomation8,nullptr,CLSCTX_INPROC_SERVER,IID_IUIAutomation2,(void**)automation.out()));
+ automation->put_ConnectionTimeout(200);automation->put_TransactionTimeout(200);
+ Com<IUIAutomationElement> root;check(automation->ElementFromHandle(window,root.out()));
+ Com<IUIAutomationTreeWalker> walker;check(automation->get_RawViewWalker(walker.out()));
+ RECT pane{},search{},rect{};int budget=160;
+ if(!findViberHeader(walker.p,root.p,pane,search,0,budget)||!GetWindowRect(window,&rect)) return {};
+ double scale=GetDpiForWindow(window)/96.0;
+ int x=pane.left+int(76*scale)-rect.left,y=search.top-int(12*scale)-rect.top;
+ int width=search.left-int(12*scale)-rect.left-x,height=int(28*scale);
+ int ww=rect.right-rect.left,wh=rect.bottom-rect.top;
+ if(width<30||height<10||x<0||y<0||x+width>ww||y+height>wh||uint64_t(ww)*wh>16000000) return {};
+ HDC dc=CreateCompatibleDC(nullptr);BITMAPINFO bi{};bi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
+ bi.bmiHeader.biWidth=ww;bi.bmiHeader.biHeight=-wh;bi.bmiHeader.biPlanes=1;bi.bmiHeader.biBitCount=32;
+ void *bits{};HBITMAP bitmap=CreateDIBSection(dc,&bi,DIB_RGB_COLORS,&bits,nullptr,0);
+ if(!bitmap){DeleteDC(dc);return {};}
+ auto old=SelectObject(dc,bitmap);Pixels p;
+ if(PrintWindow(window,dc,2)) {
+  p.width=width;p.height=height;p.bgra.resize(size_t(width)*height*4);
+  for(int row=0;row<height;++row) memcpy(p.bgra.data()+size_t(row)*width*4,(BYTE*)bits+(size_t(y+row)*ww+x)*4,size_t(width)*4);
+ }
+ SelectObject(dc,old);DeleteObject(bitmap);DeleteDC(dc);return p;
+}
+}
+std::wstring cachedViberChat(HWND window) {
+ std::lock_guard lock(viberMutex);
+ return window==viberWindow && GetTickCount64()-viberTime<2000 ? viberKey : L"";
+}
+std::wstring recognizeViberChat(HWND window,const Settings &settings) {
+ std::wstring key;
+ try {
+  auto hr=CoInitializeEx(nullptr,COINIT_MULTITHREADED);
+  struct Apartment {bool owned;~Apartment(){if(owned)CoUninitialize();}} apartment{SUCCEEDED(hr)};
+  auto context=SetThreadDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
+  struct Dpi {DPI_AWARENESS_CONTEXT old;~Dpi(){if(old)SetThreadDpiAwarenessContext(old);}} dpi{context};
+  auto before=viberHeader(window);
+  if(!before.bgra.empty()) {
+   Settings options=settings;options.useTesseract=true;
+   Clip clip;clip.formats.push_back(imageDib(before));
+   auto title=recognizeText(clip,options);
+   while(!title.empty() && iswspace(title.back())) title.pop_back();
+   while(!title.empty() && iswspace(title.front())) title.erase(0,1);
+   auto after=viberHeader(window);
+   if(!title.empty() && title.size()<512 && title.find_first_of(L"\r\n")==title.npos && before.width==after.width && before.height==after.height && before.bgra==after.bgra)
+    key=L"viber\n"+title;
+  }
+ } catch(...) {}
+ {std::lock_guard lock(viberMutex);viberWindow=window;viberKey=key;viberTime=GetTickCount64();}
+ return key;
+}
+}

tests/chat_profiles.cpp

@@ -0,0 +1,176 @@
+#include "app.h"
+#include "ocr.h"
+#include "screenshot.h"
+#include <iostream>
+#include <commctrl.h>
+
+namespace
+{
+int passed{};
+void require(bool ok, const char *message)
+{
+    if (!ok) throw std::runtime_error(message);
+    ++passed;
+}
+void contextChecks()
+{
+    const auto key = ks::chatKey(L"Telegram.exe", L"\u200eТестовий чат \u2013 (12)");
+    require(key == L"telegram\nТестовий чат", "Telegram unread suffix");
+    require(ks::chatKey(L"Telegram", L"Тестовий чат") == key, "stable unread profile");
+    require(ks::chatKey(L"Telegram", L"Team (2026)") == L"telegram\nTeam (2026)", "preserve parentheses");
+    require(ks::chatKey(L"Telegram", L"Telegram").empty(), "no profile on home");
+    require(ks::chatKey(L"Viber", L"Rakuten Viber").empty(), "Viber generic window title is not a chat");
+    require(ks::chatKey(L"ms-teams", L"Chat | Alice | Microsoft Teams") == L"ms-teams\nAlice", "Teams chat");
+    require(ks::chatKey(L"ms-teams", L"Calendar | Alice | Microsoft Teams").empty(), "Teams calendar excluded");
+    require(ks::chatKey(L"ms-teams", L"Chat | Microsoft Teams").empty(), "Teams chat home excluded");
+    require(ks::chatKey(L"other", L"Chat | Alice | Microsoft Teams").empty(), "app identity required");
+    ks::Settings settings;
+    settings.cycle = {L"win:04090409", L"win:04220422", L"win:04190419"};
+    settings.chatCycles[key] = {settings.cycle[1], settings.cycle[0]};
+    settings.chatCycles[L"viber\nТестовий контакт"] = {settings.cycle[1], settings.cycle[0]};
+    std::vector<ks::Layout> installed(3);
+    for (size_t i = 0; i < installed.size(); ++i)
+    {
+        installed[i].id = settings.cycle[i];
+        installed[i].handle = (HKL)(uintptr_t)(i + 1);
+    }
+    auto subset = settings.chatCycles[key];
+    require(ks::nextChatLayout(subset, installed, installed[1].handle, false) == installed[0].handle, "cycle within subset");
+    require(ks::nextChatLayout(subset, installed, installed[0].handle, false) == installed[1].handle, "wrap skips excluded language");
+    require(ks::nextChatLayout(subset, installed, installed[2].handle, false) == installed[1].handle, "outside subset enters first language");
+    require(ks::nextChatLayout(settings.cycle, installed, installed[0].handle, true) == installed[2].handle, "reverse wraps");
+    require(ks::nextChatLayout({settings.cycle[1]}, installed, installed[0].handle, false) == installed[1].handle, "single language selects allowed layout");
+    require(!ks::nextChatLayout({L"win:04070407"}, installed, installed[0].handle, false), "missing layout is not activated");
+    require(ks::nextConversionLayout(L"", installed, {1}, 0) == 1, "conversion uses single allowed language");
+    require(ks::chatCycle(settings, key, installed) == settings.chatCycles[key], "profile order");
+    require(ks::chatCycle(settings, L"telegram\nOther", installed) == settings.cycle, "unknown fallback");
+    require(ks::decodeSettings(ks::encodeSettings(settings), installed).chatCycles == settings.chatCycles, "Unicode roundtrip");
+    require(ks::decodeSettings({}, installed).chatCycles.empty(), "old defaults without profiles");
+    auto withoutProfiles = settings;
+    withoutProfiles.chatCycles.clear();
+    require(ks::sharedSyncSettings(settings) == ks::sharedSyncSettings(withoutProfiles), "profiles excluded from sync");
+    auto restored = ks::restoreSyncSettings(ks::sharedSyncSettings(settings), settings, installed, false);
+    require(restored.chatCycles == settings.chatCycles, "sync preserves local profiles");
+    settings.chatCycles[key] = {settings.cycle[1]};
+    require(ks::chatCycle(settings, key, installed).size() == 1, "one-language profile");
+    settings.chatCycles[key] = {L"win:04070407"};
+    require(ks::chatCycle(settings, key, installed) == settings.cycle, "missing layouts fallback");
+    settings.chatCycles[key] = {};
+    bool rejected = false;
+    try { ks::encodeSettings(settings); } catch (...) { rejected = true; }
+    require(rejected, "empty profile rejected");
+    settings.chatCycles[key] = {settings.cycle[0], settings.cycle[0]};
+    rejected = false;
+    try { ks::encodeSettings(settings); } catch (...) { rejected = true; }
+    require(rejected, "duplicate profile layout rejected");
+    ks::ChatSwitchHook hook;
+    require(hook.update(VK_SPACE, true, MOD_WIN, false) == 0, "unprofiled Win+Space passes");
+    require(hook.update(VK_SPACE, true, MOD_WIN, true) == 1, "Win+Space forward");
+    require(hook.update(VK_SPACE, true, MOD_WIN, true) == -1, "consume repeat");
+    require(hook.update(VK_SPACE, false, 0, false) == -1, "release after profile change");
+    require(hook.update(VK_SPACE, true, MOD_WIN | MOD_SHIFT, true) == 2, "reverse cycle");
+    hook.update(VK_SPACE, false, 0, true);
+    require(hook.update(VK_LSHIFT, true, MOD_ALT, true) == 1, "Alt then Shift");
+    hook.update(VK_LSHIFT, false, 0, true);
+    require(hook.update(VK_LMENU, true, MOD_SHIFT, true) == 1, "Shift then Alt");
+    hook.update(VK_LMENU, false, 0, true);
+    require(hook.update(VK_LSHIFT, true, MOD_ALT | MOD_CONTROL, true) == 0, "do not consume Ctrl+Alt+Shift");
+    require(hook.update('A', true, MOD_ALT, true) == 0, "ordinary keys pass");
+}
+}
+int main()
+{
+    CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+    auto root = std::filesystem::temp_directory_path() / (L"KSwitcher-chat-tests-" + std::to_wstring(GetCurrentProcessId()));
+    try
+    {
+        contextChecks();
+        {
+            ks::App app(GetModuleHandleW(nullptr), true, root);
+            require(!app.layouts.empty(), "installed layouts available");
+            app.settings.toggle = app.settings.casing = app.settings.translit = app.settings.undo = L"";
+            app.settings.clipboard = app.settings.screenshot = L"";
+            app.settings.direct.assign(app.layouts.size(), L"");
+            app.settings.history = app.settings.autoCorrect = false;
+            const std::wstring key = L"telegram\n! Fixture chat";
+            app.settings.chatCycles[key] = {app.layouts[0].id};
+            ks::showSettings(app);
+            HWND parent = app.settingsWindow;
+            HWND tabs = GetDlgItem(parent, 260);
+            require(tabs && TabCtrl_GetItemCount(tabs) == 5, "five settings categories");
+            for (int page = 0; page < 5; ++page)
+            {
+                TabCtrl_SetCurSel(tabs, page);
+                NMHDR notification{tabs, 260, TCN_SELCHANGE};
+                SendMessageW(parent, WM_NOTIFY, 260, (LPARAM)&notification);
+                std::vector<RECT> boxes;
+                for (HWND child = GetWindow(parent, GW_CHILD); child; child = GetWindow(child, GW_HWNDNEXT))
+                {
+                    if (!(GetWindowLongPtrW(child, GWL_STYLE) & WS_VISIBLE)) continue;
+                    RECT rect{}; GetWindowRect(child, &rect);
+                    for (const auto &other : boxes)
+                    {
+                        RECT overlap{};
+                        require(!IntersectRect(&overlap, &rect, &other), "visible settings controls never overlap");
+                    }
+                    boxes.push_back(rect);
+                }
+                RedrawWindow(parent, nullptr, nullptr, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
+                RECT rect{}; GetClientRect(parent, &rect);
+                HDC dc = GetDC(parent);
+                auto clip = ks::screenshotClip(dc, rect.right, rect.bottom, {});
+                ReleaseDC(parent, dc);
+                ks::atomicWrite(std::filesystem::path(ks::executable()).parent_path() / (L"settings-tab-" + std::to_wstring(page) + L".png"),
+                                ks::encodePng(ks::decodeImage(clip)));
+            }
+            TabCtrl_SetCurSel(tabs, 1);
+            NMHDR notification{tabs, 260, TCN_SELCHANGE};
+            SendMessageW(parent, WM_NOTIFY, 260, (LPARAM)&notification);
+            SendMessageW(parent, WM_COMMAND, 259, 0);
+            HWND dialog = FindWindowW(L"KSwitcher.ChatLanguages", nullptr);
+            require(dialog && !IsWindowEnabled(parent), "chat dialog opens with disabled parent");
+            int index = (int)SendDlgItemMessageW(dialog, 710, LB_FINDSTRINGEXACT, -1, (LPARAM)L"Telegram: ! Fixture chat");
+            require(index >= 0, "saved chat listed");
+            SendDlgItemMessageW(dialog, 710, LB_SETCURSEL, index, 0);
+            SendMessageW(dialog, WM_COMMAND, MAKEWPARAM(710, LBN_SELCHANGE), 0);
+            require(SendDlgItemMessageW(dialog, 711, LB_GETSELCOUNT, 0, 0) == 1, "saved single language selected");
+            RedrawWindow(dialog, nullptr, nullptr, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
+            RECT rect{}; GetClientRect(dialog, &rect);
+            HDC dc = GetDC(dialog);
+            auto clip = ks::screenshotClip(dc, rect.right, rect.bottom, {});
+            ReleaseDC(dialog, dc);
+            ks::atomicWrite(std::filesystem::path(ks::executable()).parent_path() / L"chat-languages.png",
+                            ks::encodePng(ks::decodeImage(clip)));
+            SendDlgItemMessageW(dialog, 711, LB_SETSEL, TRUE, -1);
+            SendMessageW(dialog, WM_COMMAND, IDCANCEL, 0);
+            require(!IsWindow(dialog) && IsWindowEnabled(parent), "cancel closes dialog");
+            SendMessageW(parent, WM_COMMAND, 259, 0);
+            dialog = FindWindowW(L"KSwitcher.ChatLanguages", nullptr);
+            index = (int)SendDlgItemMessageW(dialog, 710, LB_FINDSTRINGEXACT, -1, (LPARAM)L"Telegram: ! Fixture chat");
+            SendDlgItemMessageW(dialog, 710, LB_SETCURSEL, index, 0);
+            SendMessageW(dialog, WM_COMMAND, MAKEWPARAM(710, LBN_SELCHANGE), 0);
+            require(SendDlgItemMessageW(dialog, 711, LB_GETSELCOUNT, 0, 0) == 1, "cancel discards language edits");
+            SendDlgItemMessageW(dialog, 711, LB_SETSEL, TRUE, -1);
+            SendMessageW(dialog, WM_COMMAND, IDOK, 0);
+            require(!IsWindow(dialog) && IsWindowEnabled(parent), "profile applies to settings draft");
+            SendMessageW(parent, WM_COMMAND, IDOK, 0);
+            require(!app.settingsWindow && app.settings.chatCycles.at(key).size() == app.layouts.size(), "settings saves selected languages");
+            require(ks::loadSettings(root / L"settings.json", app.layouts).chatCycles == app.settings.chatCycles, "profile saved to disk");
+            ks::showSettings(app);
+            parent = app.settingsWindow;
+            SendMessageW(parent, WM_COMMAND, 259, 0);
+            dialog = FindWindowW(L"KSwitcher.ChatLanguages", nullptr);
+            index = (int)SendDlgItemMessageW(dialog, 710, LB_FINDSTRINGEXACT, -1, (LPARAM)L"Telegram: ! Fixture chat");
+            SendDlgItemMessageW(dialog, 710, LB_SETCURSEL, index, 0);
+            SendMessageW(dialog, WM_COMMAND, MAKEWPARAM(710, LBN_SELCHANGE), 0);
+            SendMessageW(dialog, WM_COMMAND, 713, 0);
+            SendMessageW(parent, WM_COMMAND, IDOK, 0);
+            require(!app.settings.chatCycles.contains(key), "remove profile restores default");
+        }
+        std::filesystem::remove_all(root);
+        std::cout << "Passed " << passed << " chat profile checks\n";
+        CoUninitialize();
+        return 0;
+    }
+    catch (const std::exception &e) { std::cerr << "FAIL: " << e.what() << '\n'; CoUninitialize(); return 1; }
+}

tests/input.cpp

@@ -901,7 +901,7 @@ int main(int argc, char **argv) {
                         "personal dictionary field fits options window");
             }
             SetDlgItemTextW(autoOptions,412,L"Релізик\r\nрелізик, словечко");
-            SetDlgItemTextW(autoOptions,416,L" Првиіт = Привіт\r\nhelo=hello");
+            SetDlgItemTextW(autoOptions,416,L" Првиіт = Привіт\r\nhelo=hello\r\n Мамамила = Мама мила ");
             SendDlgItemMessageW(autoOptions,414,BM_SETCHECK,BST_CHECKED,0);
             SendDlgItemMessageW(autoOptions,415,BM_SETCHECK,BST_CHECKED,0);
             SendMessageW(autoOptions,WM_COMMAND,IDOK,0);
@@ -923,7 +923,7 @@ int main(int argc, char **argv) {
                     "personal dictionary normalizes case, newlines and duplicate words");
             wchar_t pairs[128]{};
             GetDlgItemTextW(autoOptions,416,pairs,128);
-            require(std::wstring(pairs)==L"helo=hello\r\nпрвиіт=привіт\r\n" &&
+            require(std::wstring(pairs)==L"helo=hello\r\nмамамила=мама мила\r\nпрвиіт=привіт\r\n" &&
                     SendDlgItemMessageW(autoOptions,414,BM_GETCHECK,0,0)==BST_CHECKED &&
                     SendDlgItemMessageW(autoOptions,415,BM_GETCHECK,0,0)==BST_CHECKED,
                     "typo options and normalized replacement pairs survive reopening");
@@ -1021,6 +1021,9 @@ int main(int argc, char **argv) {
             require(SendDlgItemMessageW(settings,209,BM_GETCHECK,0,0)==BST_UNCHECKED,"automatic screenshot editor checkbox defaults off");
             require(settings&&!IsWindowVisible(settings),"settings layout tested without changing user focus");
             for(auto pair:{std::pair{209,215},std::pair{209,207},std::pair{209,220},std::pair{209,232},std::pair{207,215},std::pair{207,232},std::pair{207,220},std::pair{232,230},std::pair{230,231},std::pair{231,253}}) {
+                // Controls on different settings tabs intentionally share the page area.
+                if (!(GetWindowLongPtrW(GetDlgItem(settings,pair.first),GWL_STYLE)&WS_VISIBLE) ||
+                    !(GetWindowLongPtrW(GetDlgItem(settings,pair.second),GWL_STYLE)&WS_VISIBLE)) continue;
                 RECT first{},second{},overlap{};
                 GetWindowRect(GetDlgItem(settings,pair.first),&first); GetWindowRect(GetDlgItem(settings,pair.second),&second);
                 require(!IntersectRect(&overlap,&first,&second),"capture hotkey and layout controls do not overlap");

tests/integration.cpp

@@ -802,14 +802,14 @@ LRESULT CALLBACK procedure(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             case 22:
                 require(text() == L"робить ", "automatic correction selects and converts the whole word across an internal comma");
                 app->settings.autoReplace = true;
-                app->settings.autoReplacements = {{L"helo", L"hello"}};
+                app->settings.autoReplacements = {{L"helo", L"hello world"}};
                 ActivateKeyboardLayout(app->layouts[en].handle, 0);
                 prepare(L"(Helo)! ", false);
                 record(L"(Helo)! ");
                 app->transform(ks::AutoCorrect);
                 break;
             case 23:
-                require(text() == L"(Hello)! ", "explicit typo pair replaces verified text with punctuation and capital");
+                require(text() == L"(Hello world)! ", "explicit phrase pair replaces verified text with punctuation and capital");
                 app->transform(ks::Undo);
                 break;
             case 24:
@@ -835,7 +835,7 @@ LRESULT CALLBACK procedure(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             case 27:
                 require(text() == L"kswithcer ", "Undo suppresses the rejected spelling correction");
                 app->settings.autoReplace = true;
-                app->settings.autoReplacements = {{L"tehh", L"the"}};
+                app->settings.autoReplacements = {{L"tehh", L"the word"}};
                 app->autoPredictor.configure(L"dictionaries", app->settings.autoLanguages);
                 prepare(L"", false);
                 {
@@ -852,7 +852,7 @@ LRESULT CALLBACK procedure(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                 }
                 break;
             case 28:
-                require(text() == L"the x", "custom replacement through keyboard hook preserves subsequent typing");
+                require(text() == L"the word x", "custom phrase replacement through keyboard hook preserves subsequent typing");
                 app->settings.autoReplace = false;
                 app->settings.autoTypos = false;
                 if (typosOnly) { finish(); break; }

tests/tests.cpp

@@ -590,6 +590,12 @@ int main(int argc, char **argv)
             options.autoNever = {L"hlelo"};
             require(!edited.suggest(L"hlelo ", 0, layouts, options), "never-correct overrides explicit pairs");
             options.autoNever.clear();
+            options.autoReplacements[L"мамамила"] = L"мама мила";
+            correction = edited.suggest(L"(Мамамила)! ", 2, layouts, options);
+            require(correction && correction->text == L"(Мама мила)! " && correction->target == 2,
+                    "joined words split while preserving capitalization, punctuation and layout");
+            edited.reject(L"мамамила ", options);
+            require(!edited.suggest(L"мамамила ", 2, layouts, options), "undo suppresses phrase replacements");
             edited.reject(L"(Hlelo)! ", options);
             require(!edited.suggest(L"hlelo ", 0, layouts, options), "undo rejection suppresses custom replacements");
             options.autoReplace = false;
@@ -711,7 +717,7 @@ int main(int argc, char **argv)
         settings.elevatedAutostart = true;
         settings.autoCorrect = true;
         settings.autoReplace = settings.autoTypos = true;
-        settings.autoReplacements = {{L"првиіт", L"привіт"}, {L"helo", L"hello"}};
+        settings.autoReplacements = {{L"првиіт", L"привіт"}, {L"helo", L"hello"}, {L"мамамила", L"мама мила"}};
         settings.autoMaxRank = 10000;
         settings.autoMinLength = 5;
         settings.autoPrefixChars = L"(#";
@@ -726,7 +732,13 @@ int main(int argc, char **argv)
         require(restored.autoWords == settings.autoWords, "personal dictionaries survive settings roundtrip");
         require(restored.autoReplace && restored.autoTypos && restored.autoReplacements == settings.autoReplacements,
                 "typo options and Unicode pairs survive settings roundtrip");
-        for (const auto &pair : {std::pair{L"hello", L"привіт"}, {L"hello", L"hello"}, {L"hi!", L"hello"}})
+        for (const auto &pair : {std::pair{L"hello", L"привіт"}, {L"hello", L"hello"}, {L"hi!", L"hello"},
+                                {L"helloworld", L" hello world"}, {L"helloworld", L"hello world "},
+                                {L"helloworld", L"hello  world"}, {L"helloworld", L"hello\tworld"},
+                                {L"helloworld", L"hello\nworld"}, {L"hello world", L"helloworld"},
+                                {L"helloworld", L"hello світ"}, {L"helloworld", L"hello world!"},
+                                {L"helloworld", L"hello Hello"}, {L"helloworld", L""},
+                                {L"helloworld", L"abcdefghijklmnopqrstuvwxyz abcdef"}})
         {
             auto invalid = settings;
             invalid.autoReplacements = {{pair.first, pair.second}};

utilities/StayHere/README.md

@@ -2,7 +2,7 @@
 
 Маленька портативна утиліта для Windows, без .NET та інсталяції.
 
-У KSwitcher v0.6.46 і новіших виберіть **Utilities → StayHere** у меню трея
+Виберіть **Tools → StayHere** у меню трея (у v0.6.46 цей пункт називається Utilities)
 або запустіть `tools/StayHere.exe` поруч із KSwitcher.exe.
 Зелена крапка в треї означає, що підтримка активності ввімкнена.
 Клацання лівою кнопкою перемикає режим; правою — відкриває меню з перемикачем і виходом.