Release v0.6.17: constrained pencil strokes and snippet editor states

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.24)
-project(KSwitcher VERSION 0.6.10 LANGUAGES CXX RC)
+project(KSwitcher VERSION 0.6.17 LANGUAGES CXX RC)
 if(NOT WIN32)
   message(FATAL_ERROR "KSwitcher uses native Windows APIs")
 endif()

README.md

@@ -16,10 +16,10 @@ Run `build/KSwitcher.exe`, or extract `dist/KSwitcher-win-x64.zip` and run the e
 The build also refreshes the release copy in `build/release/`. Exit KSwitcher before rebuilding.
 The application lives in the notification area. Right-click its icon for Settings, Snippets and history.
 Double-click the tray icon to open Settings, the bold default menu item.
-Settings and the snippet editor run on demand in **KSwitcher.Config.exe**, beside the main executable.
+Settings, the snippet editor and log viewer run on demand in **KSwitcher.Config.exe**, beside the main executable.
 Repeated launches activate the existing configurator; closing its last window exits that process.
 Saving applies changes immediately through the resident KSwitcher process. The configurator does not
-load clipboard history, dictionaries or global input hooks. Clipboard history and the log viewer remain
+load clipboard history, dictionaries or global input hooks. Clipboard history remains
 in the resident app. Screen capture and all screenshot editors run on demand in
 **KSwitcher.Screenshot.exe**. The capture hotkey starts it; subsequent captures reuse the same
 process. Closing the last editor (or cancelling the only selection) exits that process. It does not
@@ -160,7 +160,11 @@ Hold Ctrl to start drawing over an existing object. Line style applies to outlin
 for shapes.
 **Freehand line (F)** draws an opaque curve by following the mouse. The curve is one object:
 move it, change its color or thickness, clone it, or drag its endpoints. Hold Ctrl to start a new
-stroke over an existing object. The **Line style** selector supports Solid, Dotted, Dashed and
+stroke over an existing object. Hold **Shift** while drawing to constrain the current segment
+to a horizontal, vertical or 45-degree diagonal line; release Shift to resume freehand drawing in the same stroke.
+While holding Shift, moving more than 50 image pixels away from the current line selects a new
+direction at the last drawn endpoint, preserving earlier segments. Shift can be pressed and
+released repeatedly within one stroke. The **Line style** selector supports Solid, Dotted, Dashed and
 Dash-dot; **Ends** supports an arrow at the end, start, both ends, or no arrows. These settings
 apply to selected straight/freehand lines and set defaults for subsequent lines. Both are disabled
 for numbered markers and highlights unless a line drawing tool is active. Undo/Redo includes style changes.
@@ -184,7 +188,15 @@ Click the notification or **Review update** to check the latest release and conf
 Failed notification submissions are logged and retried after five minutes instead of being marked
 as delivered. Check results and successful submissions are recorded in the log when logging is enabled.
 Network failures stay in diagnostics; the next scheduled check retries. You can also check manually at any time.
-Confirm the offered version to download and install it. The updater uses the existing
+Confirm the offered version to download and install it. A progress window shows
+download percentage and received/total size, package verification,
+installation and restart. After the new process confirms startup, that window shows the installed
+version and a Done button; it does not send a separate completion notification. If installation
+fails after KSwitcher closes, the same window shows recovery and the error. Background checks
+remain silent unless a new version is available. This progress UI is supplied by the updater in
+the currently installed build, so it becomes available for subsequent updates after installing it.
+
+The updater uses the existing
 `KSwitcher-win-x64.zip` and `SHA256SUMS.txt` assets, checks the checksum, package contents, x64
 executable identity and version, then closes and restarts KSwitcher. Downloads and staging happen
 before the application exits. If replacement or startup fails, it restores the previous files;
@@ -216,7 +228,10 @@ thumbnails and source labels aligned with the scaled fonts and spacing.
 - Clipboard snapshot/restoration with concurrent-copy, foreground and input-version checks.
 - Case cycling, Russian/Ukrainian transliteration, verified undo and repeated conversion.
 - Text snippets across layouts, multiline insertion and a verified `{cursor}` position;
-  `{{cursor}}` inserts the literal marker. Snippets are stored as plaintext settings, as in [Typlo](https://github.com/bitcodepro/Typlo).
+  `{enter}` presses Enter after insertion and cursor placement (once per marker), before buffered typing resumes.
+  For example, `rider .{enter}` inserts `rider .` and presses Enter.
+  Automatic correction is suppressed during snippet expansion and for typing buffered by that expansion; the global setting is preserved.
+  `{{cursor}}` and `{{enter}}` insert literal markers. Snippets are stored as plaintext settings, as in [Typlo](https://github.com/bitcodepro/Typlo).
 - Clipboard history for text, HTML/RTF, file lists, DIB and PNG images; plain-text paste;
   full-text search, pinning, deletion, full text viewing and image previews.
 - Image thumbnails and text/file icons appear directly in the history list. Only visible rows
@@ -283,6 +298,8 @@ to the detected current layout, is treated as expected. `paste-sent-unverified`
 accepted the paste shortcut; it does not prove that the editor applied the replacement.
 The previous 256 KiB log is retained as `kswitcher.log.1` when the current log rotates.
 Open **View log…** from Settings or the tray menu to read logs inside KSwitcher.
+The viewer runs in the configurator process so log loading, painting and pointer interaction do not
+block the resident keyboard/mouse hook thread. Clear requests are still serialized by the resident.
 Choose the current or previous log and press **Refresh** to reload. The ListView shows Time,
 Attempt, Event, and Details columns. Select rows and use **Copy selected** or Ctrl+C to copy
 tab-separated entries; Ctrl+A selects all rows. Viewing saved logs also works when logging is disabled.
@@ -355,12 +372,15 @@ Use UTF-8, one lowercase word followed by a Tab and a positive rank per line. En
 loading sorts them and merges duplicates using the lowest rank. Back up your edited
 files before replacing dictionaries with a new distribution.
 
-After Space and a 250 ms typing pause, KSwitcher checks the last physically typed word against local
-dictionaries. For example, `ghbdsn ` can become `привіт `. Continuing to type before selection cancels
-pending work. During the replacement itself, key presses and releases are queued and replayed after
+On Space, KSwitcher checks the last physically typed word against preloaded local dictionaries.
+For example, `ghbdsn ` can become `привіт `. A confirmed candidate immediately queues subsequent
+key presses and releases; no typing pause is required. Queued input is replayed after
 clipboard restoration and layout switching, preserving typing order, modifiers and Backspace.
 If the active window changes, queued typing is not sent to another window and a warning is shown.
-It only corrects unknown words when exactly one alternative is a dictionary word.
+It only corrects unknown words when the dictionary alternatives agree on the resulting text.
+Identical Ukrainian/Russian spellings such as `ntcn` → `тест` are accepted, using the first matching
+language in the configured dictionary order (the UI uses English, Ukrainian, Russian).
+Different valid spellings remain ambiguous and are left unchanged.
 **Minimum word length** defaults to 3 and can be set from 1 to 32 letters. Surrounding punctuation
 does not count toward this minimum; the maximum word length is 32 letters.
 Known words, ambiguous alternatives, ALL CAPS, mixed-case identifiers, numbers, URLs and email

Release/README.md

@@ -1,24 +1,25 @@
 # Latest Windows release
 
-## v0.6.10 — 2026-10-29
+## v0.6.17 — 2026-10-30
 
 ## Changes
-- Preserve typing during automatic layout correction: queue key presses and releases until replacement, clipboard restoration and layout switching finish. Preserve modifiers and Backspace; collapse temporary selection before replay when a correction is rejected.
-- Add My dictionary fields for English, Ukrainian and Russian in Auto-correction options. Enter correct words separated by commas or new lines; save them with settings without editing dictionary files, sorting entries or assigning ranks.
-- Accept unsorted dictionary files and duplicate entries, retaining the lowest rank for duplicates. Include Ukrainian `реліз` in the bundled vocabulary so `релыз` can be corrected when Russian and Ukrainian are enabled.
+- Hold Shift with the screenshot pencil to draw horizontal, vertical or 45-degree diagonal segments. Release Shift to continue freehand within the same stroke.
+- Move more than 50 image pixels away from the active line to change direction while preserving earlier segments. Smooth diagonal gestures use the actual mouse trajectory instead of producing stair steps.
+- Keep diagonal strokes inside image boundaries without changing their angle. Ctrl retains its existing draw-over-objects behavior; undo/redo treats the complete stroke as one object.
+- Disable snippet fields, Delete and marker insertion until a snippet is selected or added. Deleting the selected snippet clears and disables the editor.
 
 ## Validation
-Native regression checks cover personal words, settings persistence, language validation, dictionary ordering and duplicate ranks. Input/UI checks cover personal-word entry and normalization. Native editor integration covers typing with Shift and Backspace during successful and rejected corrections. Release checks also cover screenshot UI, isolated notification registration and updater validation.
+Passed 223 native regression checks, 472 input/UI checks, screenshot editor UI and notification registration checks, 48 updater checks, updater progress checks, and 45 isolated configurator process checks. Screenshot UI coverage includes smooth diagonal gestures in all four directions, direction changes, image boundaries, Shift transitions, Ctrl behavior and undo/redo. Configurator checks cover disabled snippet editing, Add, Delete, reselection and preservation of snippet content.
 
 **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 and extract the entire ZIP into its installation folder. Keep personal `data/` and customized dictionaries. Existing customized dictionary files may be preserved by the updater; use My dictionary to add missing words without replacing those files.
+For manual installation, exit KSwitcher and extract the entire ZIP into its installation folder. Keep personal `data/` and customized dictionaries.
 
 Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. The package contains all three executables, a release manifest, offline dictionaries, documentation and license notices. It contains no personal settings, clipboard history, Tesseract installation or language models.
 
 Build and package:
 
 ```powershell
-.\build.ps1 -Stage -Test -Integration
+.\build.ps1 -Stage -Test
 .\package.ps1 -PublishRelease
 ```
 

Release/SHA256SUMS.txt

@@ -1 +1 @@
-36966eb0b2b0af47c245aec6337a16703e0fbdca4d3eda7a8f25fa14a20f347e  KSwitcher-win-x64.zip
+d5813a42105a2aebb5b6ef414c0546a44f18e4d7f3d45e0f32830097781b9677  KSwitcher-win-x64.zip

build.ps1

@@ -61,6 +61,8 @@ try {
 
         & "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File tests/update.ps1 -Executable $executablePath
         if ($LASTEXITCODE) { throw 'Updater tests failed' }
+        & "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File tests/update_progress.ps1
+        if ($LASTEXITCODE) { throw 'Updater progress UI tests failed' }
     }
     if ($Integration) {
         & $compiler @common tests/integration.cpp build/core.o build/platform.o build/autostart.o build/autocorrect.o build/storage.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/KSwitcherIntegration.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 0,6,10,0
- PRODUCTVERSION 0,6,10,0
+ FILEVERSION 0,6,17,0
+ PRODUCTVERSION 0,6,17,0
  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", "0.6.10"
+   VALUE "FileVersion", "0.6.17"
   END
  END
  BLOCK "VarFileInfo"

resources/update.ps1

@@ -3,10 +3,192 @@
     [string]$CurrentVersion, [string]$ExpectedVersion,
     [string]$InstallDirectory, [string]$WorkDirectory,
     [int]$ParentProcessId, [string]$ReadyEvent,
+    [switch]$ShowProgress,
     [switch]$Library
 )
 $ErrorActionPreference = 'Stop'
 Set-StrictMode -Version Latest
+$script:progressWindow = $null
+
+function Start-UpdateProgress {
+    Add-Type -AssemblyName System.Windows.Forms
+    Add-Type -AssemblyName System.Drawing
+    if (!('KSwitcherUpdateProgress' -as [type])) {
+        Add-Type -ReferencedAssemblies System.Windows.Forms,System.Drawing -TypeDefinition @'
+using System;
+using System.Drawing;
+using System.Threading;
+using System.Windows.Forms;
+using System.Drawing.Drawing2D;
+using System.Runtime.InteropServices;
+public sealed class UpdateMeter : Control {
+    public int Percent = -1;
+    private int position;
+    private readonly System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer { Interval = 35 };
+    public UpdateMeter() {
+        DoubleBuffered = true;
+        timer.Tick += delegate { if (Percent < 0) { position = (position + 5) % Math.Max(1,Width); Invalidate(); } };
+        timer.Start();
+    }
+    protected override void OnPaint(PaintEventArgs e) {
+        using(var track = new SolidBrush(Color.FromArgb(232,234,241))) e.Graphics.FillRectangle(track,0,0,Width,Height);
+        using(var fill = new SolidBrush(Color.FromArgb(79,70,229))) {
+            if(Percent < 0) e.Graphics.FillRectangle(fill,position-Width/4,0,Width/4,Height);
+            else e.Graphics.FillRectangle(fill,0,0,Width*Percent/100,Height);
+        }
+    }
+    protected override void Dispose(bool disposing) { if(disposing) timer.Dispose(); base.Dispose(disposing); }
+}
+public sealed class UpdateSteps : Control {
+    public int Current = -1;
+    public bool Complete;
+    public UpdateSteps() { DoubleBuffered = true; }
+    protected override void OnPaint(PaintEventArgs e) {
+        e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
+        string[] names = {"Download","Verify","Install","Restart"};
+        for(int i=0;i<4;i++) {
+            int x = i*(Width-80)/3;
+            Color color = Complete || i<=Current ? Color.FromArgb(79,70,229) : Color.FromArgb(135,141,158);
+            using(var pen = new Pen(Color.FromArgb(231,233,240)))
+                if(i<3) e.Graphics.DrawLine(pen,x+22,8,x+(Width-80)/3-10,8);
+            using(var brush = new SolidBrush(color)) {
+                if(Complete || i<Current) {
+                    e.Graphics.FillEllipse(brush,x,0,16,16);
+                    using(var pen = new Pen(Color.White,1.6f)) e.Graphics.DrawLines(pen,new Point[]{new Point(x+4,8),new Point(x+7,11),new Point(x+12,5)});
+                } else {
+                    using(var pen = new Pen(color,i==Current?2:1)) e.Graphics.DrawEllipse(pen,x+1,1,14,14);
+                    if(i==Current) e.Graphics.FillEllipse(brush,x+5,5,6,6);
+                }
+                e.Graphics.DrawString(names[i],Font,brush,x,26);
+            }
+        }
+    }
+}
+public sealed class KSwitcherUpdateProgress : IDisposable {
+    private Form form;
+    private Label stage, detail, percentage, footer;
+    private UpdateMeter progress;
+    private UpdateSteps steps;
+    private Button done, close;
+    private bool closing;
+    private Exception failure;
+    private readonly ManualResetEvent ready = new ManualResetEvent(false);
+    private readonly Thread thread;
+    [DllImport("user32.dll")] private static extern bool ReleaseCapture();
+    [DllImport("user32.dll")] private static extern IntPtr SendMessage(IntPtr h,int m,IntPtr w,IntPtr l);
+    [DllImport("dwmapi.dll")] private static extern int DwmSetWindowAttribute(IntPtr h,int a,ref int v,int size);
+    private void Drag(object sender,MouseEventArgs e) { if(e.Button==MouseButtons.Left) { ReleaseCapture(); SendMessage(form.Handle,0xA1,(IntPtr)2,IntPtr.Zero); } }
+    public KSwitcherUpdateProgress() {
+        thread = new Thread(delegate() {
+            try {
+                Application.EnableVisualStyles();
+                form = new Form { Text = "KSwitcher Update", ClientSize = new Size(540,350), BackColor = Color.White,
+                    ForeColor = Color.FromArgb(32,36,48), StartPosition = FormStartPosition.CenterScreen,
+                    FormBorderStyle = FormBorderStyle.None, Font = new Font("Segoe UI",10), AutoScaleMode = AutoScaleMode.Dpi };
+                var logo = new Panel { Location = new Point(28,24), Size = new Size(34,34), BackColor = Color.FromArgb(79,70,229) };
+                logo.Paint += delegate(object sender,PaintEventArgs e) {
+                    e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
+                    using(var pen = new Pen(Color.White,4)) { e.Graphics.DrawLine(pen,10,8,10,26); e.Graphics.DrawLine(pen,11,17,25,7); }
+                    using(var pen = new Pen(Color.FromArgb(94,234,212),4)) e.Graphics.DrawLine(pen,12,17,25,27);
+                };
+                var brand = new Label { Text = "KSwitcher", Location = new Point(74,22), Size = new Size(260,24), Font = new Font("Segoe UI Semibold",11) };
+                var caption = new Label { Text = "Application update", Location = new Point(74,45), Size = new Size(260,20), ForeColor = Color.FromArgb(111,117,134), Font = new Font("Segoe UI",9) };
+                var minimize = new Button { Text = "\u2013", AccessibleName = "Minimize", Location = new Point(452,20), Size = new Size(32,32), FlatStyle = FlatStyle.Flat, TabStop = false };
+                minimize.FlatAppearance.BorderSize = 0; minimize.Click += delegate { form.WindowState = FormWindowState.Minimized; };
+                close = new Button { Text = "\u00d7", AccessibleName = "Close", Location = new Point(490,20), Size = new Size(32,32), FlatStyle = FlatStyle.Flat, Enabled = false };
+                close.FlatAppearance.BorderSize = 0; close.Click += delegate { form.Close(); };
+                stage = new Label { Text = "Checking for updates", Location = new Point(28,98), Size = new Size(414,36), Font = new Font("Segoe UI Semibold",20) };
+                percentage = new Label { Location = new Point(440,104), Size = new Size(72,30), TextAlign = ContentAlignment.MiddleRight, ForeColor = Color.FromArgb(79,70,229), Font = new Font("Segoe UI Semibold",16) };
+                detail = new Label { Text = "Connecting to the release server", Location = new Point(28,148), Size = new Size(484,42), ForeColor = Color.FromArgb(111,117,134) };
+                progress = new UpdateMeter { Location = new Point(28,202), Size = new Size(484,6), AccessibleName = "Update progress" };
+                steps = new UpdateSteps { Location = new Point(28,230), Size = new Size(484,48), Font = new Font("Segoe UI",9) };
+                var bottom = new Panel { Location = new Point(1,296), Size = new Size(538,53), BackColor = Color.FromArgb(247,248,251) };
+                footer = new Label { Text = "Your settings and history stay with you.", Location = new Point(27,18), Size = new Size(350,22), ForeColor = Color.FromArgb(111,117,134), Font = new Font("Segoe UI",9) };
+                done = new Button { Text = "Done", Location = new Point(410,9), Size = new Size(100,34), BackColor = Color.FromArgb(79,70,229), ForeColor = Color.White, FlatStyle = FlatStyle.Flat, Visible = false };
+                done.FlatAppearance.BorderSize = 0; done.Click += delegate { form.Close(); };
+                bottom.Controls.AddRange(new Control[]{footer,done});
+                form.Controls.AddRange(new Control[]{logo,brand,caption,minimize,close,stage,percentage,detail,progress,steps,bottom});
+                form.MouseDown += Drag; logo.MouseDown += Drag; brand.MouseDown += Drag; caption.MouseDown += Drag;
+                form.Paint += delegate(object sender,PaintEventArgs e) { using(var pen = new Pen(Color.FromArgb(220,223,232))) e.Graphics.DrawRectangle(pen,0,0,form.ClientSize.Width-1,form.ClientSize.Height-1); };
+                form.FormClosing += delegate(object sender, FormClosingEventArgs e) { if (!closing) e.Cancel = true; };
+                form.Shown += delegate { int rounded=2; try { DwmSetWindowAttribute(form.Handle,33,ref rounded,4); } catch { } ready.Set(); };
+                Application.Run(form);
+            } catch(Exception e) { failure = e; ready.Set(); }
+        });
+        thread.IsBackground = true;
+        thread.SetApartmentState(ApartmentState.STA);
+        thread.Start();
+        if (!ready.WaitOne(10000)) throw new Exception("Update progress window did not start.");
+        if (failure != null) throw new Exception("Cannot display update progress.",failure);
+    }
+    public void Report(string title, string text, int percent) {
+        if (form == null || form.IsDisposed) return;
+        form.BeginInvoke((Action)delegate {
+            stage.Text = title; detail.Text = text;
+            progress.Percent = percent < 0 ? -1 : Math.Max(0,Math.Min(100,percent));
+            percentage.Text = percent < 0 ? "" : progress.Percent+"%";
+            int separator = text.IndexOf("% - ");
+            if(separator>=0) detail.Text = text.Substring(separator+4)+" downloaded";
+            if(title.StartsWith("Downloading")) steps.Current=0;
+            else if(title.StartsWith("Verifying") || title.StartsWith("Preparing")) steps.Current=1;
+            else if(title.StartsWith("Installing") || title.StartsWith("Closing")) steps.Current=2;
+            else if(title.StartsWith("Restarting")) steps.Current=3;
+            progress.Invalidate(); steps.Invalidate();
+        });
+    }
+    public void SavePreview(string path) {
+        form.Invoke((Action)delegate {
+            using(var bitmap = new Bitmap(form.Width,form.Height)) {
+                form.DrawToBitmap(bitmap,new Rectangle(0,0,bitmap.Width,bitmap.Height));
+                bitmap.Save(path,System.Drawing.Imaging.ImageFormat.Png);
+            }
+        });
+    }
+    public string Status { get { return (string)form.Invoke((Func<string>)delegate { return stage.Text; }); } }
+    public int Percent { get { return (int)form.Invoke((Func<int>)delegate { return progress.Percent; }); } }
+    public void Finish(string title, string text, bool success) {
+        form.Invoke((Action)delegate {
+            closing = true;
+            stage.Text = title; detail.Text = text;
+            progress.Percent = success ? 100 : 0; percentage.Text = success ? "100%" : "";
+            steps.Complete = success;
+            if(!success) {
+                detail.Visible = false; steps.Visible = false;
+                var result = new TextBox { Text = text, Location = new Point(28,148), Size = new Size(484,126),
+                    Multiline = true, ReadOnly = true, BorderStyle = BorderStyle.None,
+                    BackColor = Color.White, ScrollBars = ScrollBars.Vertical };
+                form.Controls.Add(result); result.BringToFront(); progress.Visible = false;
+            }
+            footer.Text = success ? "Your settings and history are preserved." : "Review the details above.";
+            close.Enabled = true; done.Visible = true;
+            form.AcceptButton = done; form.CancelButton = done;
+            progress.Invalidate(); steps.Invalidate();
+        });
+    }
+    public void WaitForClose() { thread.Join(); }
+    public void Dispose() {
+        if (form != null && !form.IsDisposed)
+            form.BeginInvoke((Action)delegate { closing = true; form.Close(); });
+        thread.Join(3000);
+    }
+}
+'@
+    }
+    $script:progressWindow = New-Object KSwitcherUpdateProgress
+}
+function Show-UpdateProgress([string]$Stage,[string]$Detail,[int]$Percent = -1) {
+    if ($script:progressWindow) {
+        try { $script:progressWindow.Report($Stage,$Detail,$Percent) }
+        catch { Write-Warning 'Could not refresh update progress.' }
+    }
+}
+function Complete-UpdateProgress([string]$Title,[string]$Detail,[bool]$Success) {
+    if ($script:progressWindow) {
+        try { $script:progressWindow.Finish($Title,$Detail,$Success); return $true }
+        catch { Write-Warning 'Could not display the update result.' }
+    }
+    return $false
+}
 
 function Get-StableVersion([string]$Tag) {
     if ($Tag -notmatch '^(?:v|release-v)?(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$') { return $null }
@@ -20,7 +202,7 @@ function Assert-ReleaseUrl([string]$Url) {
         throw 'Release asset URL is outside the KSwitcher repository.'
     }
 }
-function Receive-File([string]$Url,[string]$Path,[long]$Limit) {
+function Receive-File([string]$Url,[string]$Path,[long]$Limit,[string]$ProgressLabel = '') {
     [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
     $request = [Net.HttpWebRequest]::Create($Url)
     $request.AllowAutoRedirect = $false
@@ -36,11 +218,20 @@ function Receive-File([string]$Url,[string]$Path,[long]$Limit) {
         $buffer = New-Object byte[] 65536
         $total = 0L
         $deadline = [DateTime]::UtcNow.AddSeconds(60)
+        $lastProgress = [DateTime]::MinValue
         while (($count = $inputStream.Read($buffer,0,$buffer.Length)) -gt 0) {
             $total += $count
             if ($total -gt $Limit -or [DateTime]::UtcNow -gt $deadline) { throw 'Download exceeded size or time limit.' }
             $outputStream.Write($buffer,0,$count)
+            if ($ProgressLabel -and ([DateTime]::UtcNow - $lastProgress).TotalMilliseconds -ge 100) {
+                $percent = if ($response.ContentLength -gt 0) { [int][Math]::Min(100,100.0*$total/$response.ContentLength) } else { -1 }
+                $detail = if ($percent -ge 0) { '{0}% - {1:N1} / {2:N1} MB' -f $percent,($total/1MB),($response.ContentLength/1MB) } else { '{0:N1} MB received' -f ($total/1MB) }
+                Show-UpdateProgress $ProgressLabel $detail $percent
+                $lastProgress = [DateTime]::UtcNow
+            }
         }
+        if ($response.ContentLength -ge 0 -and $total -ne $response.ContentLength) { throw 'The download ended before the complete file was received.' }
+        if ($ProgressLabel) { Show-UpdateProgress $ProgressLabel ('Downloaded {0:N1} MB' -f ($total/1MB)) 100 }
     } finally {
         if ($outputStream) { $outputStream.Dispose() }
         if ($inputStream) { $inputStream.Dispose() }
@@ -220,8 +411,9 @@ function Write-Result($Value) {
 if ($Library) { return }
 $transaction = $null; $parentProcess = $null; $ready = $null; $started = $null
 $changed = [Collections.Generic.List[string]]::new()
-$parentExited = $false; $success = $false; $preserveBackup = $false; $child = $null
+$parentExited = $false; $success = $false; $preserveBackup = $false; $child = $null; $uiFinished = $false
 try {
+    if ($ShowProgress -or $Mode -eq 'Install') { Start-UpdateProgress }
     $current = Get-StableVersion $CurrentVersion
     if (!$current) { throw 'Invalid installed version.' }
     if ($Mode -eq 'Install') {
@@ -242,25 +434,35 @@ try {
     $stage = Join-Path $transaction 'stage'; $backup = Join-Path $transaction 'backup'
     [IO.Directory]::CreateDirectory($stage) | Out-Null
     $archive = Join-Path $WorkDirectory 'release.zip'; $checksum = Join-Path $WorkDirectory 'SHA256SUMS.txt'
-    Receive-File $release.zip $archive 50MB
+    Show-UpdateProgress 'Downloading update' $release.version 0
+    Receive-File $release.zip $archive 50MB 'Downloading update'
+    Show-UpdateProgress 'Verifying download' 'Checking the archive SHA-256 checksum'
     Receive-File $release.checksum $checksum 64KB
     Assert-Checksum $archive $checksum
+    Show-UpdateProgress 'Preparing installation' 'Validating and unpacking the release files'
     Expand-Release $archive $stage (Get-StableVersion $release.version)
     $screenshotPath = [IO.Path]::GetFullPath((Join-Path $InstallDirectory 'KSwitcher.Screenshot.exe'))
     if (Get-Process 'KSwitcher.Screenshot' -ErrorAction SilentlyContinue | Where-Object { $_.Path -eq $screenshotPath }) { throw 'Close screenshot editors before installing an update.' }
     Write-Result @{state='prepared';version=$release.version}
+    Show-UpdateProgress 'Closing KSwitcher' 'Waiting for the running application to exit safely'
     $ready.Set() | Out-Null
     if (!$parentProcess.WaitForExit(120000)) { throw 'KSwitcher did not exit; the installed files were not changed.' }
     $parentExited = $true
+    Show-UpdateProgress 'Installing update' 'Replacing application files; keeping your personal data'
     Install-Files $stage $InstallDirectory $backup $changed
     $startedName = 'Local\KSwitcher.Update.Started.'+[guid]::NewGuid().ToString('N')
     $started = [Threading.EventWaitHandle]::new($false,[Threading.EventResetMode]::ManualReset,$startedName)
+    Show-UpdateProgress 'Restarting KSwitcher' 'Waiting for the updated application to confirm startup'
     $child = Start-Process -FilePath (Join-Path $InstallDirectory 'KSwitcher.exe') -ArgumentList "--update-ready-event=$startedName" -WorkingDirectory $InstallDirectory -WindowStyle Hidden -PassThru
     if (!$started.WaitOne(30000) -or $child.HasExited) { throw 'The updated application did not confirm startup.' }
     $success = $true
+    if ($script:progressWindow) {
+        $uiFinished = Complete-UpdateProgress 'Update completed' "KSwitcher $(Get-StableVersion $release.version) is now running." $true
+    }
 } catch {
     $message = $_.Exception.Message
     if ($parentExited) {
+        Show-UpdateProgress 'Restoring previous version' 'The update failed; recovering the previous installation'
         try {
             if ($child -and !$child.HasExited) { $child.Kill(); $child.WaitForExit() }
             Undo-Files $InstallDirectory $backup $changed
@@ -273,8 +475,12 @@ try {
     }
     Write-Result @{state='error';error=$message}
     if ($ready -and $ready.WaitOne(0)) {
-        Add-Type -AssemblyName System.Windows.Forms
-        [Windows.Forms.MessageBox]::Show($message,'KSwitcher update failed') | Out-Null
+        if ($script:progressWindow) {
+            $uiFinished = Complete-UpdateProgress 'Update failed' $message $false
+        } else {
+            Add-Type -AssemblyName System.Windows.Forms
+            [Windows.Forms.MessageBox]::Show($message,'KSwitcher update failed') | Out-Null
+        }
     }
     exit 1
 } finally {
@@ -291,4 +497,8 @@ try {
             Remove-Item -LiteralPath $WorkDirectory -Recurse -Force -ErrorAction SilentlyContinue
         }
     }
+    if ($script:progressWindow) {
+        if ($uiFinished) { $script:progressWindow.WaitForClose() }
+        $script:progressWindow.Dispose(); $script:progressWindow = $null
+    }
 }

src/app.cpp

@@ -12,6 +12,11 @@ namespace ks
 App *App::current = nullptr;
 namespace
 {
+ULONG_PTR snippetReplayMarker()
+{
+    static const char marker{};
+    return reinterpret_cast<ULONG_PTR>(&marker);
+}
 std::vector<std::pair<int, std::wstring>> shortcuts(const Settings &s)
 {
     std::vector<std::pair<int, std::wstring>> out{{Toggle, s.toggle},
@@ -248,6 +253,13 @@ App::App(HINSTANCE h, bool test, const std::filesystem::path &dataRoot) : instan
         registrationWarning = L"Settings were not loaded: " + wide(e.what());
     }
     setLoggingEnabled(settings.writeLog);
+    if (settings.autoCorrect)
+        try { autoPredictor.configure(std::filesystem::path(executable()).parent_path() / L"dictionaries", settings.autoLanguages); }
+        catch (const std::exception &e)
+        {
+            settings.autoCorrect = false;
+            registrationWarning += L"\nAutomatic correction unavailable: " + wide(e.what());
+        }
     try
     {
         history = std::make_unique<History>(data / L"history");
@@ -417,12 +429,12 @@ bool App::registerHotkeys(const Settings &s, bool rollback)
 void App::applySettings(const Settings &s)
 {
     bool autostartChanged = false;
+    AutoCorrector predictor;
     validateSettings(s);
     validateTesseract(s);
     if (s.autoCorrect)
     {
-        AutoCorrector probe;
-        probe.configure(std::filesystem::path(executable()).parent_path() / L"dictionaries", s.autoLanguages);
+        predictor.configure(std::filesystem::path(executable()).parent_path() / L"dictionaries", s.autoLanguages);
     }
     if (!registerHotkeys(s))
     {
@@ -454,6 +466,7 @@ void App::applySettings(const Settings &s)
     {
         std::lock_guard lock(stateMutex);
         settings = s;
+        autoPredictor = std::move(predictor);
         setLoggingEnabled(s.writeLog);
         run.reset();
         last.reset();
@@ -517,6 +530,7 @@ void App::resetInput()
     run.reset();
     last.reset();
 }
+void App::clearLog(bool previous) { clearDiagnosticLog(previous); }
 void App::keyboard(const KBDLLHOOKSTRUCT &k, UINT mods)
 {
     if (ownKeyboardInput(k))
@@ -557,9 +571,33 @@ void App::keyboard(const KBDLLHOOKSTRUCT &k, UINT mods)
         return;
     }
     run.record(ch, fg, layout, GetTickCount64());
-    if (settings.autoCorrect && ch == L' ' && run.keys.size() >= (size_t)settings.autoMinLength + 1 &&
+    if (settings.autoCorrect && !snippetTyping && k.dwExtraInfo != snippetReplayMarker() &&
+        mods == 0 && ch == L' ' && run.keys.size() >= (size_t)settings.autoMinLength + 1 &&
         run.keys.size() <= 41 && !busy && !run.overflow)
-        PostMessageW(window, AutoCorrectMessage, (WPARAM)inputVersion.load(), 0);
+    {
+        for (int source = 0; source < (int)layouts.size(); ++source)
+            if (layouts[source].handle == layout)
+            {
+                std::wstring predicted;
+                for (wchar_t key : run.keys)
+                    predicted += key == L' ' ? L' ' : layouts[source].at(physicalLayout().code(key));
+                if (autoPredictor.suggest(predicted, source, layouts, settings))
+                {
+                    // Reserve the transaction before the next physical key arrives.
+                    // The delimiter itself passes through; subsequent input is queued.
+                    typingTarget = fg;
+                    autoPending = true;
+                    busy = true;
+                    if (!PostMessageW(window, AutoCorrectMessage, (WPARAM)inputVersion.load(), 0))
+                    {
+                        typingTarget = nullptr;
+                        autoPending = false;
+                        busy = false;
+                    }
+                }
+                break;
+            }
+    }
     if (busy || settings.snippets.empty())
         return;
     auto keys = lower(run.keys);
@@ -587,7 +625,18 @@ void App::keyboard(const KBDLLHOOKSTRUCT &k, UINT mods)
         for (auto &trigger : variants)
             if (keys.size() >= trigger.size() && keys.ends_with(trigger))
             {
-                PostMessageW(window, SnippetMessage, (WPARAM)i, 0);
+                // Keep subsequent typing out of the selection/paste transaction.
+                typingTarget = fg;
+                snippetPending = (int)i;
+                snippetTyping = true;
+                busy = true;
+                if (!PostMessageW(window, SnippetMessage, (WPARAM)i, (LPARAM)inputVersion.load()))
+                {
+                    typingTarget = nullptr;
+                    snippetPending = -1;
+                    snippetTyping = false;
+                    busy = false;
+                }
                 return;
             }
     }
@@ -661,12 +710,13 @@ bool App::handleKeyboard(const KBDLLHOOKSTRUCT &key, bool down, UINT mods)
         return true;
     return false;
 }
-bool App::beginTypingDeferral(HWND target, uint64_t version)
+bool App::beginTypingDeferral(HWND target, uint64_t version, bool snippet)
 {
     std::lock_guard lock(stateMutex);
     if (inputVersion != version || GetForegroundWindow() != target || !modifiersReleased())
         return false;
     typingTarget = target;
+    snippetTyping = snippet;
     return true;
 }
 void App::replayTyping()
@@ -677,7 +727,13 @@ void App::replayTyping()
         std::lock_guard lock(stateMutex);
         target = typingTarget;
         typingTarget = nullptr;
+        autoPending = false;
+        snippetPending = -1;
         inputs.swap(deferredTyping);
+        if (snippetTyping)
+            for (auto &input : inputs)
+                input.ki.dwExtraInfo = snippetReplayMarker();
+        snippetTyping = false;
     }
     busy = false;
     if (inputs.empty())
@@ -793,12 +849,19 @@ void App::transform(int command, int snippet)
             L" version=" + std::to_wstring(currentVersion) +
             L" repeat=" + std::to_wstring(repeatAttempts));
     }
-    if (busy.exchange(true))
+    const bool preDeferred = (command == AutoCorrect && autoPending) ||
+                             (snippet >= 0 && snippetPending == snippet);
+    if (busy.exchange(true) && !preDeferred)
     {
         if (manual)
             diagnosticEvent(L"Transform outcome id=" + std::to_wstring(attempt) + L" reason=busy", true);
         return;
     }
+    if (preDeferred)
+    {
+        autoPending = false;
+        snippetPending = -1;
+    }
     Run recent;
     std::optional<LastTransform> previous;
     Settings config;
@@ -813,7 +876,7 @@ void App::transform(int command, int snippet)
         version = inputVersion;
     }
     enqueue(
-        [this, target, recent, previous, config, available, version, command, snippet, attempt, manual, requestedAt]
+        [this, target, recent, previous, config, available, version, command, snippet, attempt, manual, requestedAt, preDeferred]
         {
             struct BusyReset
             {
@@ -827,7 +890,7 @@ void App::transform(int command, int snippet)
                     else
                         b = false;
                 }
-            } reset{busy, window};
+            } reset{busy, window, preDeferred};
             auto start = GetTickCount64();
             std::wstring reason = L"cancelled-before-selection";
             std::wstring text, result, expected;
@@ -869,7 +932,7 @@ void App::transform(int command, int snippet)
                             reason != L"paste-sent-unverified" && reason != L"layout-only" &&
                             reason != L"unchanged-expected");
                 }
-            } audit{*this, target, version, attempt, requestedAt, manual, reason, text, result, expected, hint, to};
+            } audit{*this, target, version, attempt, requestedAt, manual || snippet >= 0, reason, text, result, expected, hint, to};
             try
             {
                 auto valid = [&]
@@ -905,14 +968,15 @@ void App::transform(int command, int snippet)
                     std::wstring predicted;
                     for (wchar_t key : recent.keys)
                         predicted += key == L' ' ? L' ' : available[hint].at(physicalLayout().code(key));
+                    expected = predicted;
                     if (!autoCorrector.suggest(predicted, hint, available, config) ||
                         !autoCorrectionAllowed(target, config) || !valid())
                         return;
                 }
                 reason = L"clipboard-snapshot";
-                if (command == AutoCorrect)
+                if (command == AutoCorrect || snippet >= 0)
                 {
-                    if (!beginTypingDeferral(target, version))
+                    if (!beginTypingDeferral(target, version, snippet >= 0))
                         return;
                     reset.deferred = true;
                 }
@@ -944,9 +1008,12 @@ void App::transform(int command, int snippet)
                     autoSelected = true;
                     Sleep(25);
                     text = tx.copy();
-                    // Some editors first select only ") ". Extend by whole-word
-                    // boundaries, then still verify against the complete tracked run.
-                    for (int i = 0; i < 3 && autoClosingSelection(text, config) && tx.valid(); ++i)
+                    // Editors may split hj,bnm at the comma. Extend only a verified
+                    // suffix of the tracked input, and still require a complete match.
+                    for (int i = 0; i < 3 && tx.valid() &&
+                         matchAutoInput(recent, text, available, physicalLayout(), config) < 0 &&
+                         (autoClosingSelection(text, config) ||
+                          (!text.empty() && text.size() < expected.size() && expected.ends_with(text))); ++i)
                     {
                         if (!chord(VK_LEFT, MOD_CONTROL | MOD_SHIFT))
                             break;
@@ -1004,13 +1071,11 @@ void App::transform(int command, int snippet)
                     tail.keys = tail.keys.substr(tail.keys.size() - sn.trigger.size());
                     if (!tx.select(sn.trigger.size()))
                         return;
+                    autoSelected = true;
+                    reason = L"snippet-verification-mismatch";
                     text = tx.copy();
                     if (tail.match(text, available, physicalLayout()) < 0)
-                    {
-                        if (tx.valid())
-                            chord(VK_RIGHT);
                         return;
-                    }
                     result = parseTemplate(sn.text).text;
                     automatic = true;
                 }
@@ -1123,12 +1188,22 @@ void App::transform(int command, int snippet)
                 if (snippet >= 0 && sent && tx.valid())
                 {
                     auto t = parseTemplate(config.snippets[snippet].text);
-                    if (!t.suffix.empty() && tx.select(caretSteps(t.suffix)))
+                    if (!t.suffix.empty())
                     {
+                        if (!tx.select(caretSteps(t.suffix))) return;
                         auto suffix = tx.copy();
-                        if (tx.valid())
-                            chord(newlines(suffix) == newlines(t.suffix) ? VK_LEFT : VK_RIGHT);
+                        if (!tx.valid()) return;
+                        if (newlines(suffix) != newlines(t.suffix))
+                        {
+                            chord(VK_RIGHT);
+                            return;
+                        }
+                        if (!chord(VK_LEFT)) return;
                     }
+                    // Action markers run after insertion and cursor placement,
+                    // before any physical typing buffered during expansion.
+                    for (int i = 0; i < t.enters && tx.valid(); ++i)
+                        if (!chord(VK_RETURN)) break;
                 }
                 if (to >= 0 && config.switchLayout && tx.valid() && (sent || result == text))
                 {
@@ -1387,7 +1462,7 @@ void App::checkUpdate(bool interactive, bool install, const std::wstring &versio
     updateWorker = std::thread([this, interactive, install, version]
     {
         auto result = std::make_unique<UpdateResult>();
-        try { *result = runUpdate(install, version); }
+        try { *result = runUpdate(install, version, interactive); }
         catch (const std::exception &e) { result->state = L"error"; result->error = wide(e.what()); }
         result->interactive = interactive;
         result->install = install;
@@ -1476,13 +1551,22 @@ LRESULT CALLBACK App::windowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
         app->captureHistory();
         return 0;
     case AutoCorrectMessage:
-        if (app->installingUpdate) return 0;
-        app->pendingAutoVersion = (uint64_t)wp;
-        SetTimer(hwnd, 3, 250, nullptr);
+        if (app->autoPending)
+        {
+            if (!app->installingUpdate && !app->snippetTyping && app->settings.autoCorrect && app->inputVersion.load() == (uint64_t)wp)
+                app->transform(AutoCorrect);
+            else
+                app->replayTyping();
+        }
         return 0;
     case SnippetMessage:
-        if (app->installingUpdate) return 0;
-        app->transform(0, (int)wp);
+        if (app->snippetPending == (int)wp)
+        {
+            if (!app->installingUpdate && app->inputVersion.load() == (uint64_t)lp)
+                app->transform(0, (int)wp);
+            else
+                app->replayTyping();
+        }
         return 0;
     case HistoryMessage:
         if (app->historyWindow && IsWindowVisible(app->historyWindow))
@@ -1504,7 +1588,7 @@ LRESULT CALLBACK App::windowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
     case WM_COPYDATA:
     {
         auto *data = (COPYDATASTRUCT *)lp;
-        if (data && data->dwData >= ConfigRead && data->dwData < ConfigReply)
+        if (data && data->dwData >= ConfigRead && data->dwData < ConfigEnd)
         {
             if (app->installingUpdate) return FALSE;
             return configurationRequest(*app, (HWND)wp, *data);
@@ -1534,13 +1618,6 @@ LRESULT CALLBACK App::windowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
             app->dispatch(20);
             return 0;
         }
-        if (wp == 3)
-        {
-            KillTimer(hwnd, 3);
-            if (!app->installingUpdate && app->settings.autoCorrect && app->inputVersion.load() == app->pendingAutoVersion)
-                app->transform(AutoCorrect);
-            return 0;
-        }
         if (wp == 2)
         {
             PostMessageW(hwnd, WM_CLOSE, 0, 0);
@@ -1635,8 +1712,8 @@ int App::execute()
         SetTimer(window, 2, 10000, nullptr);
     else
         SetTimer(window, 5, 5000, nullptr);
-    if (keyboardHook && mouseHook)
-        confirmUpdatedStartup(updateStartupEvent);
+    if (keyboardHook && mouseHook && confirmUpdatedStartup(updateStartupEvent))
+        log(std::wstring(L"Update completed; running version ") + AppVersion);
     if (startCommand)
         PostMessageW(window, WM_HOTKEY, startCommand, 0);
     try { registerScreenshotNotifications(); }

src/app.h

@@ -38,6 +38,7 @@ class App
     Settings settings;
     std::unique_ptr<History> history;
     AutoCorrector autoCorrector;
+    AutoCorrector autoPredictor; // Preloaded, hook-thread-only lookup; no file access while typing.
     std::atomic<bool> busy{false}, suspended{false};
     std::atomic<DWORD> ownSequence{0};
     std::atomic<uint64_t> inputVersion{0};
@@ -70,6 +71,7 @@ class App
     void applySettings(const Settings &);
     void reloadLayouts();
     void clearHistory();
+    void clearLog(bool previous);
     void setHotkeyCapture(HWND);
     bool isHotkey(DWORD, UINT);
     void keyboard(const KBDLLHOOKSTRUCT &, UINT modifiers);
@@ -99,7 +101,6 @@ class App
     bool (*updateNotifier)(const std::wstring &){};
     bool stop{};
     UINT taskbarCreated{};
-    uint64_t pendingAutoVersion{};
     uint64_t transformAttempt{}, previousAttemptVersion{};
     ULONGLONG previousAttemptAt{};
     HWND previousAttemptWindow{};
@@ -107,8 +108,11 @@ class App
     std::vector<std::pair<int, Hotkey>> hookBindings;
     HotkeyHook hotkeyHook;
     HWND typingTarget{};
+    bool autoPending{};
+    int snippetPending = -1;
+    bool snippetTyping{};
     std::vector<INPUT> deferredTyping;
-    bool beginTypingDeferral(HWND, uint64_t);
+    bool beginTypingDeferral(HWND, uint64_t, bool snippet = false);
     void replayTyping();
     static LRESULT CALLBACK windowProc(HWND, UINT, WPARAM, LPARAM);
     static LRESULT CALLBACK keyProc(int, WPARAM, LPARAM);

src/autocorrect.cpp

@@ -152,7 +152,11 @@ std::optional<AutoSuggestion> AutoCorrector::suggest(const std::wstring &typed,
         suffix.insert(suffix.begin(), word.back());
         word.pop_back();
     }
-    if (!safeAutoWord(word, settings.autoMinLength) || suffix.size() > 6 || rejected.contains(lower(word)))
+    // Punctuation keys can be letters in the target layout (for example ',' -> 'б').
+    // Validate letters and capitalization after conversion, not before it.
+    if (settings.autoMinLength < 1 || settings.autoMinLength > 32 ||
+        word.size() < (size_t)settings.autoMinLength || word.size() > 32 ||
+        suffix.size() > 6 || rejected.contains(lower(word)))
         return {};
     for (auto &never : settings.autoNever)
         if (lower(never) == lower(word))
@@ -172,7 +176,12 @@ std::optional<AutoSuggestion> AutoCorrector::suggest(const std::wstring &typed,
         if (d.rank(word) || personal(language, word))
             return {};
     std::optional<AutoSuggestion> candidate;
-    int matches = 0;
+    std::optional<std::wstring> matchedText;
+    auto priority = [&](int layout)
+    {
+        auto language = layoutLanguage(layouts[layout]);
+        return std::find(settings.autoLanguages.begin(), settings.autoLanguages.end(), language) - settings.autoLanguages.begin();
+    };
     for (int i = 0; i < (int)layouts.size(); ++i)
     {
         if (i == source || !layouts[i].convertible ||
@@ -187,9 +196,11 @@ std::optional<AutoSuggestion> AutoCorrector::suggest(const std::wstring &typed,
         int rank = personal(dictionary->first, converted) ? 1 : dictionary->second.rank(converted);
         if (!rank)
             continue;
-        if (++matches > 1)
+        if (matchedText && *matchedText != converted)
             return {};
-        if (settings.autoMaxRank == 0 || rank <= settings.autoMaxRank)
+        matchedText = converted;
+        if ((settings.autoMaxRank == 0 || rank <= settings.autoMaxRank) &&
+            (!candidate || priority(i) < priority(candidate->target)))
             candidate = AutoSuggestion{source, i, prefix + converted + suffix};
     }
     return candidate;

src/config_main.cpp

@@ -57,6 +57,7 @@ LRESULT CALLBACK controller(HWND window, UINT message, WPARAM wp, LPARAM lp)
         try
         {
             if (wp == 21) showSnippets(*app);
+            else if (wp == 22) showLogs(*app);
             else showSettings(*app);
         }
         catch (const std::exception &e)
@@ -69,6 +70,7 @@ LRESULT CALLBACK controller(HWND window, UINT message, WPARAM wp, LPARAM lp)
     {
         if (app->settingsWindow) DestroyWindow(app->settingsWindow);
         if (app->snippetsWindow) DestroyWindow(app->snippetsWindow);
+        if (app->logWindow) DestroyWindow(app->logWindow);
         PostQuitMessage(0);
         return 0;
     }
@@ -86,6 +88,7 @@ App::~App()
 {
     if (settingsWindow) DestroyWindow(settingsWindow);
     if (snippetsWindow) DestroyWindow(snippetsWindow);
+    if (logWindow) DestroyWindow(logWindow);
     if (window) DestroyWindow(window);
     current = nullptr;
 }
@@ -120,9 +123,9 @@ void App::setHotkeyCapture(HWND field)
         if (field) MessageBoxW(settingsWindow, wide(e.what()).c_str(), L"Shortcut capture unavailable", MB_OK | MB_ICONWARNING);
     }
 }
-void showLogs(App &app) { request(app, ConfigLogs); }
+void App::clearLog(bool previous) { request(*this, ConfigClearLog, Bytes{static_cast<unsigned char>(previous)}); }
 
-int runConfigurator(HINSTANCE instance, bool snippets)
+int runConfigurator(HINSTANCE instance, bool snippets, bool logs)
 {
     HANDLE singleton = CreateMutexW(nullptr, TRUE, L"Local\\KSwitcher.Config.Singleton");
     if (!singleton) throw std::runtime_error("Cannot create configurator instance lock.");
@@ -140,7 +143,7 @@ int runConfigurator(HINSTANCE instance, bool snippets)
             throw std::runtime_error("The configurator is starting or belongs to another installation. Try again shortly.");
         DWORD pid{}; GetWindowThreadProcessId(window, &pid);
         AllowSetForegroundWindow(pid);
-        PostMessageW(window, WM_APP + 20, snippets ? 21 : 20, 0);
+        PostMessageW(window, WM_APP + 20, logs ? 22 : snippets ? 21 : 20, 0);
         return 0;
     }
     service = FindWindowW(L"KSwitcher.Main", L"KSwitcher");
@@ -169,9 +172,10 @@ int runConfigurator(HINSTANCE instance, bool snippets)
                                  0, 0, 0, 0, nullptr, nullptr, instance, nullptr);
     if (!app.window) throw std::runtime_error("Cannot create configurator window.");
     app.settings = decodeSettings(request(app, ConfigRead), app.layouts);
-    if (snippets) showSnippets(app); else showSettings(app);
+    setLoggingEnabled(app.settings.writeLog);
+    if (logs) showLogs(app); else if (snippets) showSnippets(app); else showSettings(app);
     MSG message;
-    while ((app.settingsWindow || app.snippetsWindow) && GetMessageW(&message, nullptr, 0, 0) > 0)
+    while ((app.settingsWindow || app.snippetsWindow || app.logWindow) && GetMessageW(&message, nullptr, 0, 0) > 0)
     {
         if (app.settingsWindow && !IsWindowEnabled(app.settingsWindow))
         {
@@ -180,6 +184,7 @@ int runConfigurator(HINSTANCE instance, bool snippets)
         }
         if (app.settingsWindow && IsDialogMessageW(app.settingsWindow, &message)) continue;
         if (app.snippetsWindow && IsDialogMessageW(app.snippetsWindow, &message)) continue;
+        if (app.logWindow && IsDialogMessageW(app.logWindow, &message)) continue;
         TranslateMessage(&message); DispatchMessageW(&message);
     }
     return 0;
@@ -193,8 +198,9 @@ int WINAPI wWinMain(HINSTANCE instance, HINSTANCE, PWSTR, int)
     {
         int count{}; auto args = CommandLineToArgvW(GetCommandLineW(), &count);
         bool snippets = count > 1 && std::wstring(args[1]) == L"--snippets";
+        bool logs = count > 1 && std::wstring(args[1]) == L"--logs";
         LocalFree(args);
-        result = ks::runConfigurator(instance, snippets);
+        result = ks::runConfigurator(instance, snippets, logs);
     }
     catch (const std::exception &e)
     {

src/configuration.cpp

@@ -14,12 +14,12 @@ bool configurationPeer(HWND window, const wchar_t *filename)
     auto expected = std::filesystem::path(executable()).parent_path() / filename;
     return ok && _wcsicmp(path, expected.c_str()) == 0;
 }
-void launchConfiguration(App &app, bool snippets)
+void launchConfiguration(App &app, bool snippets, bool logs)
 {
     auto path = std::filesystem::path(executable()).parent_path() / L"KSwitcher.Config.exe";
     if (!std::filesystem::exists(path))
         throw std::runtime_error("KSwitcher.Config.exe is missing. Extract the complete application package.");
-    auto command = L"\"" + path.wstring() + L"\"" + (snippets ? L" --snippets" : L"");
+    auto command = L"\"" + path.wstring() + L"\"" + (logs ? L" --logs" : snippets ? L" --snippets" : L"");
     STARTUPINFOW startup{sizeof(startup)};
     PROCESS_INFORMATION process{};
     if (!CreateProcessW(path.c_str(), command.data(), nullptr, nullptr, FALSE, 0, nullptr,
@@ -80,6 +80,11 @@ LRESULT configurationRequest(App &app, HWND sender, const COPYDATASTRUCT &messag
         case ConfigLogs:
             PostMessageW(app.window, WM_HOTKEY, 22, 0);
             break;
+        case ConfigClearLog:
+            if (message.cbData != 1 || *static_cast<const unsigned char *>(message.lpData) > 1)
+                throw std::runtime_error("Invalid log selection.");
+            app.clearLog(*static_cast<const unsigned char *>(message.lpData) != 0);
+            break;
         default: return FALSE;
         }
         ok = true;

src/configuration.h

@@ -5,9 +5,9 @@ namespace ks
 inline constexpr ULONG_PTR ConfigRead = 0x4b530100, ConfigSave = ConfigRead + 1,
     ConfigLayouts = ConfigRead + 2, ConfigClearHistory = ConfigRead + 3,
     ConfigCapture = ConfigRead + 4, ConfigLogs = ConfigRead + 5,
-    ConfigReply = ConfigRead + 6;
+    ConfigReply = ConfigRead + 6, ConfigClearLog = ConfigRead + 7, ConfigEnd = ConfigRead + 8;
 inline constexpr size_t ConfigLimit = 8 * 1024 * 1024;
 bool configurationPeer(HWND, const wchar_t *filename);
-void launchConfiguration(App &, bool snippets = false);
+void launchConfiguration(App &, bool snippets = false, bool logs = false);
 LRESULT configurationRequest(App &, HWND sender, const COPYDATASTRUCT &);
 }

src/core.cpp

@@ -261,7 +261,17 @@ Template parseTemplate(const std::wstring &text)
     size_t cursor = std::wstring::npos;
     for (size_t i = 0; i < text.size();)
     {
-        if (text.compare(i, 10, L"{{cursor}}\0", 10) == 0)
+        if (text.compare(i, 9, L"{{enter}}") == 0)
+        {
+            t.text += L"{enter}";
+            i += 9;
+        }
+        else if (text.compare(i, 7, L"{enter}") == 0)
+        {
+            ++t.enters;
+            i += 7;
+        }
+        else if (text.compare(i, 10, L"{{cursor}}\0", 10) == 0)
         {
             t.text += L"{cursor}";
             i += 10;

src/core.h

@@ -34,6 +34,7 @@ struct Template
 {
     std::wstring text, suffix;
     int cursors = 0;
+    int enters = 0;
 };
 Template parseTemplate(const std::wstring &);
 struct Hotkey

src/screenshot.cpp

@@ -178,6 +178,11 @@ struct Capture
     COLORREF currentColor=RGB(225,42,50);
     COLORREF customColors[16]{};
     Mark stroke{};
+    bool strokeConstrained{};
+    size_t strokeAnchor{};
+    int strokeAxis{}; // 0 = not chosen, 1 = horizontal, 2 = vertical, 3/4 = diagonals.
+    bool strokeAxisSettled{};
+    std::vector<POINT> strokeMotion;
     POINT start{}, end{};
     RECT selection{}, view{};
     std::vector<Mark> marks;
@@ -250,7 +255,7 @@ void updateStatus(Capture &c)
     else if(c.pointer) text=L"Pointer (V): select and edit objects | Drag handles = geometry or thickness | Empty space clears selection";
     else if(c.textTool) text=L"Text (T): click the image to type | Double-click existing text to edit";
     else if(c.highlight) text=L"Highlight (H): drag to paint | Ctrl+drag = paint over an object | V = pointer";
-    else if(c.freehand) text=L"Freehand (F): drag to draw | Ctrl+drag = draw over an object | V = pointer";
+    else if(c.freehand) text=L"Freehand (F): Shift = 45-degree steps; move >50 px off line to turn | Ctrl = draw over objects";
     else if(c.arrow) text=L"Drag to draw | Ctrl+drag over objects = linked connector | V = pointer";
     else text=L"Number (N): click to add | V = select and edit | Ctrl+C = copy screenshot";
     if(text!=c.statusText) {
@@ -841,7 +846,7 @@ void edit(HWND w, Capture &c)
     InitCommonControlsEx(&statusControls);
     CreateWindowExW(0,STATUSCLASSNAMEW,L"",WS_CHILD|WS_VISIBLE|SBARS_TOOLTIPS,
         0,0,0,0,w,(HMENU)50,c.app.instance,nullptr);
-    const wchar_t *labels[]{L"Pointer (V): select and edit objects", L"Number (N)", L"Arrow (A); Ctrl+drag between objects to link", L"Straight line (L); Ctrl+drag between objects to link", L"Rectangle (R)", L"Circle (O)", L"Ellipse (E)", L"Freehand line (F); Ctrl+drag to draw over an object", L"Highlight (H); Ctrl+drag to paint over an object",
+    const wchar_t *labels[]{L"Pointer (V): select and edit objects", L"Number (N)", L"Arrow (A); Ctrl+drag between objects to link", L"Straight line (L); Ctrl+drag between objects to link", L"Rectangle (R)", L"Circle (O)", L"Ellipse (E)", L"Freehand line (F); Shift for 45-degree steps; move >50 px off line to turn; Ctrl to draw over objects", L"Highlight (H); Ctrl+drag to paint over an object",
         L"Text (T); double-click or F2 to edit", L"Color — selected object and new objects", L"Undo (Ctrl+Z)", L"Redo (Ctrl+Y / Ctrl+Shift+Z)", L"Copy (Ctrl+C)"};
     static_assert(std::size(labels)==std::size(ToolIds));
     auto tips=CreateWindowExW(WS_EX_TOPMOST,TOOLTIPS_CLASSW,nullptr,WS_POPUP|TTS_ALWAYSTIP|TTS_NOPREFIX,
@@ -1045,6 +1050,13 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
 
             SetFocus(w); captureCursor(w,*c); InvalidateRect(w,nullptr,FALSE); return 0;
         case WM_KEYDOWN:
+            if(wp==VK_SHIFT && c->editing && c->dragging && c->freehand && c->part==MarkPart::None && !c->strokeConstrained) {
+                c->strokeConstrained=true;
+                c->strokeAnchor=c->stroke.points.size()-1;
+                c->strokeAxis=0;
+                c->strokeAxisSettled=false;
+                c->strokeMotion={c->stroke.points.back()};
+            }
             if (wp==VK_ESCAPE) {
                 if(!c->editing) DestroyWindow(w); // Cancel region selection only.
                 return 0;
@@ -1100,6 +1112,9 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                 }
             }
             return 0;
+        case WM_KEYUP:
+            if(wp==VK_SHIFT) c->strokeConstrained=false;
+            return 0;
         case WM_LBUTTONDBLCLK:
             if(c->editing && !c->dragging) {
                 POINT p{GET_X_LPARAM(lp),GET_Y_LPARAM(lp)};
@@ -1156,6 +1171,7 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                     c->stroke={p,p,0}; c->stroke.thickness=c->highlight?24:3; c->stroke.color=c->currentColor;
                     c->stroke.freehand=c->freehand; c->stroke.style=c->lineStyle; c->stroke.ends=c->freehandEnds;
                     c->stroke.points.push_back(p);
+                    c->strokeConstrained=false;
                 }
                 c->dragging=true; SetCapture(w);
             }
@@ -1193,6 +1209,63 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                 if(c->editing && c->part==MarkPart::None && c->shape!=ScreenshotShape::None)
                     c->end=constrainScreenshotShape(c->shape,c->start,c->end,c->image->width,c->image->height);
                 if(c->editing && (c->highlight || c->freehand) && c->part==MarkPart::None) {
+                    bool constrained=c->freehand && ((wp&MK_SHIFT) || (GetKeyState(VK_SHIFT)&0x8000));
+                    if(constrained) {
+                        if(!c->strokeConstrained) {
+                            c->strokeAnchor=c->stroke.points.size()-1;
+                            c->strokeAxis=0;
+                            c->strokeAxisSettled=false;
+                            c->strokeMotion={c->stroke.points.back()};
+                        }
+                        auto anchor=c->stroke.points[c->strokeAnchor];
+                        // Measure the actual mouse trajectory, not its snapped projection.
+                        auto raw=c->end;
+                        if(c->strokeMotion.back().x!=raw.x || c->strokeMotion.back().y!=raw.y)
+                            c->strokeMotion.push_back(raw);
+                        while(c->strokeMotion.size()>2 && (c->strokeMotion.size()>64 ||
+                              std::hypot(double(raw.x-c->strokeMotion[1].x),double(raw.y-c->strokeMotion[1].y))>=16))
+                            c->strokeMotion.erase(c->strokeMotion.begin());
+                        auto chooseAxis=[](POINT from,POINT to) {
+                            LONG dx=to.x-from.x,dy=to.y-from.y;
+                            constexpr double diagonalBoundary=2.414213562373095; // tan(67.5 degrees)
+                            if(std::abs(dx)>std::abs(dy)*diagonalBoundary) return 1;
+                            if(std::abs(dy)>std::abs(dx)*diagonalBoundary) return 2;
+                            return (dx<0)==(dy<0)?3:4;
+                        };
+                        auto distance=[](int axis,POINT from,POINT to) {
+                            double dx=to.x-from.x,dy=to.y-from.y;
+                            return axis==1?std::abs(dy):axis==2?std::abs(dx):
+                                std::abs(axis==3?dy-dx:dy+dx)/std::sqrt(2.0);
+                        };
+                        if(!c->strokeAxisSettled && (c->end.x!=anchor.x || c->end.y!=anchor.y)) {
+                            c->strokeAxis=chooseAxis(anchor,c->end);
+                            // A one-pixel first movement must not lock a diagonal gesture to an axis.
+                            c->strokeAxisSettled=std::hypot(double(raw.x-anchor.x),double(raw.y-anchor.y))>=8;
+                        }
+                        else if(c->strokeAxis && distance(c->strokeAxis,anchor,c->end)>50) {
+                            // Keep the completed segment and turn at its endpoint.
+                            auto corner=c->stroke.points.back();
+                            int nextAxis=chooseAxis(c->strokeMotion.front(),raw);
+                            if(nextAxis!=c->strokeAxis) {
+                                c->strokeAnchor=c->stroke.points.size()-1;
+                                anchor=corner;
+                                c->strokeAxis=nextAxis;
+                            }
+                        }
+                        if(c->strokeAxis==1) c->end.y=anchor.y;
+                        else if(c->strokeAxis==2) c->end.x=anchor.x;
+                        else if(c->strokeAxis>=3) {
+                            int sign=c->strokeAxis==3?1:-1;
+                            LONG delta=std::lround(((c->end.x-anchor.x)+sign*(c->end.y-anchor.y))/2.0);
+                            LONG minY=sign==1?-anchor.y:anchor.y-(c->image->height-1);
+                            LONG maxY=sign==1?c->image->height-1-anchor.y:anchor.y;
+                            delta=std::clamp(delta,std::max(-anchor.x,minY),std::min(LONG(c->image->width-1)-anchor.x,maxY));
+                            c->end={anchor.x+delta,anchor.y+sign*delta};
+                        }
+                        // Only the current segment is a preview; earlier corners stay fixed.
+                        c->stroke.points.resize(c->strokeAnchor+1);
+                    }
+                    c->strokeConstrained=constrained;
                     auto last=c->stroke.points.back();
                     if(last.x!=c->end.x || last.y!=c->end.y) c->stroke.points.push_back(c->end);
                     c->stroke.to=c->end;

src/ui.cpp

@@ -34,6 +34,8 @@ struct WindowLayout
     bool scrolling{}, arranging{}, history{};
     int wheelRemainder{}, horizontalWheelRemainder{};
     std::vector<std::pair<HWND, RECT>> controls; // Original 96-DPI geometry; never rescale rounded pixels.
+    HWND stretch{}, bottomLeft{}, bottomRight{};
+    bool autoOptions{};
 };
 WindowLayout *windowLayoutState(HWND w)
 {
@@ -69,8 +71,9 @@ void arrangeWindow(HWND w)
         layout->y = SetScrollInfo(w, SB_VERT, &vertical, TRUE);
     }
     RECT client{}; GetClientRect(w, &client);
-    int extraWidth = layout->history ? std::max(0, int(client.right) - scale(w, layout->width)) : 0;
-    int extraHeight = layout->history ? std::max(0, int(client.bottom) - scale(w, layout->height)) : 0;
+    bool expandable = layout->history || layout->stretch || layout->autoOptions;
+    int extraWidth = expandable ? std::max(0, int(client.right) - scale(w, layout->width)) : 0;
+    int extraHeight = expandable ? std::max(0, int(client.bottom) - scale(w, layout->height)) : 0;
     struct Move { HWND child; RECT rect; };
     std::vector<Move> moves;
     for (const auto &[child, r] : layout->controls)
@@ -80,6 +83,35 @@ void arrangeWindow(HWND w)
                   scale(w, r.top) - layout->y + (id >= 110 && id <= 114 ? extraHeight : 0)};
         next.right = next.left + scale(w, r.right - r.left) + (id == 101 || id == 102 ? extraWidth : 0);
         next.bottom = next.top + scale(w, r.bottom - r.top) + (id == 102 ? extraHeight : 0);
+        if (child == layout->stretch)
+        {
+            next.right += extraWidth;
+            next.bottom += extraHeight;
+        }
+        if (child == layout->bottomLeft || child == layout->bottomRight)
+            OffsetRect(&next, child == layout->bottomRight ? extraWidth : 0, extraHeight);
+        if (layout->autoOptions)
+        {
+            if (r.top >= 396) OffsetRect(&next, 0, extraHeight);
+            if (r.top == 302 || r.top == 328 || (id >= 401 && id <= 403))
+            {
+                int column = id >= 401 && id <= 403 ? id - 401 : (r.left - 18) / 178;
+                int leftExtra = extraWidth * column / 3;
+                OffsetRect(&next, leftExtra, 0);
+                next.right += extraWidth * (column + 1) / 3 - leftExtra;
+                if (r.top == 328) next.bottom += extraHeight;
+            }
+            else if (r.top == 474 || r.top == 500)
+            {
+                bool rightColumn = r.left >= 290;
+                OffsetRect(&next, rightColumn ? extraWidth / 2 : 0, 0);
+                next.right += rightColumn ? extraWidth - extraWidth / 2 : extraWidth / 2;
+            }
+            else if (id == 406 || id == 410 || id == IDOK || id == IDCANCEL)
+                OffsetRect(&next, extraWidth, 0);
+            else if (r.right - r.left >= 500)
+                next.right += extraWidth;
+        }
         RECT current{}; GetWindowRect(child, &current);
         MapWindowPoints(nullptr, w, reinterpret_cast<POINT *>(&current), 2);
         if (!EqualRect(&current, &next)) moves.push_back({child, next});
@@ -1064,6 +1096,7 @@ void showAutoOptions(HWND parent, SettingsView *v)
 {
     HWND w = makeWindow(*v->app, L"KSwitcher.AutoOptions", L"Automatic layout correction", autoOptionsProc,
                         560, 680);
+    windowLayoutState(w)->autoOptions = true;
     SetWindowLongPtrW(w, GWLP_HWNDPARENT, (LONG_PTR)parent);
     SetWindowLongPtrW(w, GWLP_USERDATA, (LONG_PTR) new AutoOptionsView{parent, v});
     label(w, L"Offline dictionaries (only layouts in your cycle are used)", 18, 16, 525);
@@ -1104,6 +1137,11 @@ void showAutoOptions(HWND parent, SettingsView *v)
     label(w, L"After editing files, click OK here, then Save in Settings to reload.", 18, 600, 525);
     button(w, L"OK", IDOK, 326, 632, 100);
     button(w, L"Cancel", IDCANCEL, 440, 632, 100);
+    RECT initial{};
+    GetWindowRect(w, &initial);
+    initial.right += scale(w, 200);
+    initial.bottom += scale(w, 140);
+    fitToMonitor(w, initial);
     EnableWindow(parent, FALSE);
     showRequestedWindow(w);
     SetForegroundWindow(w);
@@ -1337,6 +1375,14 @@ struct SnippetView
     std::vector<Snippet> snippets;
     int selection = -1;
 };
+void updateSnippetEditor(HWND w, SnippetView *v)
+{
+    bool selected = v->selection >= 0 && v->selection < (int)v->snippets.size();
+    value(w, 302, selected ? v->snippets[v->selection].trigger : L"");
+    value(w, 303, selected ? v->snippets[v->selection].text : L"");
+    for (int id : {302, 303, 311, 312, 313})
+        EnableWindow(GetDlgItem(w, id), selected);
+}
 void fillSnippets(HWND w, SnippetView *v)
 {
     SendDlgItemMessageW(w, 301, LB_RESETCONTENT, 0, 0);
@@ -1344,6 +1390,7 @@ void fillSnippets(HWND w, SnippetView *v)
         SendDlgItemMessageW(w, 301, LB_ADDSTRING, 0, (LPARAM)sn.trigger.c_str());
     if (v->selection >= 0)
         SendDlgItemMessageW(w, 301, LB_SETCURSEL, v->selection, 0);
+    updateSnippetEditor(w, v);
 }
 void collectSnippet(HWND w, SnippetView *v)
 {
@@ -1380,11 +1427,7 @@ LRESULT CALLBACK snippetProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             {
                 collectSnippet(w, v);
                 v->selection = (int)SendDlgItemMessageW(w, 301, LB_GETCURSEL, 0, 0);
-                if (v->selection >= 0)
-                {
-                    value(w, 302, v->snippets[v->selection].trigger);
-                    value(w, 303, v->snippets[v->selection].text);
-                }
+                updateSnippetEditor(w, v);
                 return 0;
             }
             if (id == 310)
@@ -1393,8 +1436,6 @@ LRESULT CALLBACK snippetProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                 v->snippets.push_back({L";new", L""});
                 v->selection = (int)v->snippets.size() - 1;
                 fillSnippets(w, v);
-                value(w, 302, L";new");
-                value(w, 303, L"");
                 SetFocus(GetDlgItem(w, 302));
                 return 0;
             }
@@ -1405,14 +1446,14 @@ LRESULT CALLBACK snippetProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                     v->snippets.erase(v->snippets.begin() + v->selection);
                     v->selection = -1;
                     fillSnippets(w, v);
-                    value(w, 302, L"");
-                    value(w, 303, L"");
+                    SetFocus(GetDlgItem(w, 301));
                 }
                 return 0;
             }
-            if (id == 312)
+            if (id == 312 || id == 313)
             {
-                SendDlgItemMessageW(w, 303, EM_REPLACESEL, TRUE, (LPARAM)L"{cursor}");
+                if (v->selection < 0 || v->selection >= (int)v->snippets.size()) return 0;
+                SendDlgItemMessageW(w, 303, EM_REPLACESEL, TRUE, (LPARAM)(id == 312 ? L"{cursor}" : L"{enter}"));
                 return 0;
             }
             if (id == IDOK)
@@ -1530,53 +1571,41 @@ void showHistory(App &app, bool visible)
     SetFocus(GetDlgItem(app.historyWindow, 101));
     refreshHistory(app);
 }
+#endif
+#ifndef KS_RESIDENT_APP
 namespace
 {
 constexpr int LogChoice = 601, LogRows = 602, LogRefresh = 603, LogStatus = 604, LogCopy = 605,
               LogClear = 606;
-LRESULT CALLBACK logListProc(HWND w, UINT msg, WPARAM wp, LPARAM lp, UINT_PTR, DWORD_PTR)
+void fitLogDetails(HWND list)
 {
-    // Header notifications go to the ListView, not its top-level parent.
-    if (msg == WM_NOTIFY && ((NMHDR *)lp)->hwndFrom == ListView_GetHeader(w) &&
-        ((NMHDR *)lp)->code == NM_CUSTOMDRAW)
+    if (GetPropW(list, L"FittingLogDetails") || Header_GetItemCount(ListView_GetHeader(list)) != 4) return;
+    SetPropW(list, L"FittingLogDetails", (HANDLE)1);
+    RECT client{};
+    GetClientRect(list, &client);
+    int remaining = client.right;
+    for (int column = 0; column < 3; ++column)
+        remaining -= ListView_GetColumnWidth(list, column);
+    int width = std::max(scale(list, 120), remaining);
+    if (ListView_GetColumnWidth(list, 3) != width)
+        ListView_SetColumnWidth(list, 3, width);
+    RemovePropW(list, L"FittingLogDetails");
+}
+LRESULT CALLBACK logListResizeProc(HWND w, UINT msg, WPARAM wp, LPARAM lp, UINT_PTR, DWORD_PTR)
+{
+    auto result = DefSubclassProc(w, msg, wp, lp);
+    if (msg == WM_SIZE)
+        fitLogDetails(w);
+    if (msg == WM_NOTIFY && lp)
     {
-        auto *draw = (NMCUSTOMDRAW *)lp;
-        if (draw->dwDrawStage == CDDS_PREPAINT)
-        {
-            FillRect(draw->hdc, &draw->rc, GetSysColorBrush(COLOR_BTNFACE));
-            return CDRF_NOTIFYITEMDRAW;
-        }
-        if (draw->dwDrawStage == CDDS_ITEMPREPAINT)
-        {
-            int saved = SaveDC(draw->hdc);
-            FillRect(draw->hdc, &draw->rc, GetSysColorBrush(COLOR_BTNFACE));
-            RECT edge = draw->rc;
-            edge.top = edge.bottom - 1;
-            FillRect(draw->hdc, &edge, GetSysColorBrush(COLOR_3DSHADOW));
-            edge = draw->rc;
-            edge.left = edge.right - 1;
-            FillRect(draw->hdc, &edge, GetSysColorBrush(COLOR_3DSHADOW));
-            wchar_t title[128]{};
-            HDITEMW item{};
-            item.mask = HDI_TEXT;
-            item.pszText = title;
-            item.cchTextMax = 128;
-            Header_GetItem(draw->hdr.hwndFrom, (int)draw->dwItemSpec, &item);
-            auto headerFont = (HFONT)SendMessageW(draw->hdr.hwndFrom, WM_GETFONT, 0, 0);
-            if (headerFont)
-                SelectObject(draw->hdc, headerFont);
-            SetBkMode(draw->hdc, TRANSPARENT);
-            SetTextColor(draw->hdc, GetSysColor(COLOR_BTNTEXT));
-            RECT text = draw->rc;
-            InflateRect(&text, -scale(w, 6), 0);
-            DrawTextW(draw->hdc, title, -1, &text, DT_SINGLELINE | DT_VCENTER | DT_END_ELLIPSIS | DT_NOPREFIX);
-            RestoreDC(draw->hdc, saved);
-            return CDRF_SKIPDEFAULT;
-        }
+        auto *header = reinterpret_cast<NMHEADERW *>(lp);
+        if (header->hdr.hwndFrom == ListView_GetHeader(w) &&
+            (header->hdr.code == HDN_ITEMCHANGEDW || header->hdr.code == HDN_ITEMCHANGEDA) &&
+            header->iItem >= 0 && header->iItem < 3)
+            fitLogDetails(w);
     }
-    if (msg == WM_NCDESTROY)
-        RemoveWindowSubclass(w, logListProc, 1);
-    return DefSubclassProc(w, msg, wp, lp);
+    if (msg == WM_NCDESTROY) RemoveWindowSubclass(w, logListResizeProc, 3);
+    return result;
 }
 void copyLogRows(HWND w, App &app)
 {
@@ -1596,7 +1625,11 @@ void copyLogRows(HWND w, App &app)
         copied += L"\r\n";
     }
     if (!copied.empty())
-        app.ownSequence = writeClipboard(app.window, textClip(copied));
+    {
+        auto clip = textClip(copied);
+        clip.formats.push_back({0, L"ExcludeClipboardContentFromMonitorProcessing", {1, 0, 0, 0}});
+        app.ownSequence = writeClipboard(app.window, clip);
+    }
 }
 void refreshLogView(HWND w, App &app)
 {
@@ -1664,6 +1697,7 @@ void refreshLogView(HWND w, App &app)
     InvalidateRect(list, nullptr, TRUE);
     if (row)
         ListView_EnsureVisible(list, row - 1, FALSE);
+    fitLogDetails(list);
     value(w, LogStatus, app.settings.writeLog ? L"Logging enabled: failed operations only."
                                     : L"Logging disabled. Showing previously saved entries.");
 }
@@ -1696,7 +1730,7 @@ LRESULT CALLBACK logProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
         {
             try
             {
-                clearDiagnosticLog(SendDlgItemMessageW(w, LogChoice, CB_GETCURSEL, 0, 0) == 1);
+                app->clearLog(SendDlgItemMessageW(w, LogChoice, CB_GETCURSEL, 0, 0) == 1);
                 refreshLogView(w, *app);
             }
             catch (const std::exception &e) { error(w, e); }
@@ -1758,7 +1792,7 @@ void showLogs(App &app)
     auto list = control(w, WC_LISTVIEWW, L"", WS_TABSTOP | WS_BORDER | LVS_REPORT | LVS_SHOWSELALWAYS,
                         LogRows, 16, 82, 868, 454);
     ListView_SetExtendedListViewStyle(list, LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | LVS_EX_DOUBLEBUFFER);
-    SetWindowSubclass(list, logListProc, 1, 0);
+    SetWindowSubclass(list, logListResizeProc, 3, 0);
     const wchar_t *titles[] = {L"Time", L"Attempt", L"Event", L"Details"};
     const int widths[] = {155, 65, 195, 900};
     for (int i = 0; i < 4; ++i)
@@ -1769,12 +1803,20 @@ void showLogs(App &app)
         column.cx = scale(w, widths[i]);
         ListView_InsertColumn(list, i, &column);
     }
-    label(w, L"Select rows to copy. Ctrl+A selects all; Ctrl+C copies selected rows.", 16, 551, 720);
+    auto hint = control(w, L"STATIC", L"Select rows to copy. Ctrl+A selects all; Ctrl+C copies selected rows.",
+                        0, 0, 16, 551, 720, 22);
     button(w, L"Close", IDCANCEL, 774, 548, 110);
+    auto *layout = windowLayoutState(w);
+    layout->stretch = list;
+    layout->bottomLeft = hint;
+    layout->bottomRight = GetDlgItem(w, IDCANCEL);
+    arrangeWindow(w);
     refreshLogView(w, app);
     showRequestedWindow(w);
     activateWindow(w);
 }
+#else
+void showLogs(App &app) { launchConfiguration(app, false, true); }
 #endif
 #ifndef KS_RESIDENT_APP
 void showSettings(App &app, bool visible)
@@ -1861,8 +1903,9 @@ void showSnippets(App &app)
     edit(w, 302, 236, 44, 488);
     label(w, L"Replacement text", 236, 82, 480);
     edit(w, 303, 236, 110, 488, 270, ES_MULTILINE | ES_WANTRETURN | ES_AUTOVSCROLL | WS_VSCROLL);
-    label(w, L"Use {cursor} once; {{cursor}} inserts the literal marker.", 236, 392, 488);
+    control(w, L"STATIC", L"{cursor}: caret; {enter}: press Enter after insertion.\nUse {{cursor}} / {{enter}} for literal markers.", 0, 0, 236, 392, 488, 36);
     button(w, L"Insert cursor marker", 312, 236, 430, 190);
+    button(w, L"Insert Enter marker", 313, 436, 430, 190);
     button(w, L"Save", IDOK, 510, 478, 100);
     button(w, L"Cancel", IDCANCEL, 624, 478, 100);
     fillSnippets(w, (SnippetView *)GetWindowLongPtrW(w, GWLP_USERDATA));

src/update.cpp

@@ -26,7 +26,7 @@ std::wstring quoteArgument(const std::wstring &value)
     return out + L'"';
 }
 }
-UpdateResult runUpdate(bool install, const std::wstring &expectedVersion)
+UpdateResult runUpdate(bool install, const std::wstring &expectedVersion, bool showProgress)
 {
     UpdateResult result;
     GUID guid{};
@@ -56,6 +56,7 @@ UpdateResult runUpdate(bool install, const std::wstring &expectedVersion)
             L" -InstallDirectory " + quoteArgument(std::filesystem::path(executable()).parent_path().wstring()) +
             L" -ParentProcessId " + std::to_wstring(GetCurrentProcessId()) + L" -ReadyEvent " + quoteArgument(readyName);
         if (install) command += L" -ExpectedVersion " + quoteArgument(expectedVersion);
+        if (showProgress) command += L" -ShowProgress";
         STARTUPINFOW startup{sizeof(startup)};
         PROCESS_INFORMATION process{};
         if (!CreateProcessW(powershell.c_str(), command.data(), nullptr, nullptr, FALSE, CREATE_NO_WINDOW,
@@ -94,10 +95,10 @@ UpdateResult runUpdate(bool install, const std::wstring &expectedVersion)
         throw;
     }
 }
-void confirmUpdatedStartup(const std::wstring &eventName)
+bool confirmUpdatedStartup(const std::wstring &eventName)
 {
-    if (!eventName.starts_with(L"Local\\KSwitcher.Update.Started.")) return;
+    if (!eventName.starts_with(L"Local\\KSwitcher.Update.Started.")) return false;
     Handle event{OpenEventW(EVENT_MODIFY_STATE, FALSE, eventName.c_str())};
-    if (event.value) SetEvent(event.value);
+    return event.value && SetEvent(event.value);
 }
 }

src/update.h

@@ -2,7 +2,7 @@
 #include "platform.h"
 namespace ks
 {
-inline constexpr wchar_t AppVersion[] = L"0.6.10";
+inline constexpr wchar_t AppVersion[] = L"0.6.17";
 inline constexpr UINT UpdateMessage = WM_APP + 7;
 inline constexpr UINT UpdateCheckIntervalMs = 6 * 60 * 60 * 1000;
 inline constexpr UINT UpdateNotificationRetryMs = 5 * 60 * 1000;
@@ -13,6 +13,6 @@ struct UpdateResult
     std::wstring state, version, error;
     bool interactive{}, install{};
 };
-UpdateResult runUpdate(bool install, const std::wstring &expectedVersion);
-void confirmUpdatedStartup(const std::wstring &eventName);
+UpdateResult runUpdate(bool install, const std::wstring &expectedVersion, bool showProgress = false);
+bool confirmUpdatedStartup(const std::wstring &eventName);
 }

tests/configuration.ps1

@@ -1,4 +1,4 @@
-param([string]$BuildDirectory = (Join-Path $PSScriptRoot '../build/staged'))
+param([string]$BuildDirectory = (Join-Path $PSScriptRoot '../build/staged'), [switch]$LogsOnly)
 $ErrorActionPreference = 'Stop'
 if (Get-Process KSwitcher,'KSwitcher.Config' -ErrorAction SilentlyContinue) {
     throw 'Close KSwitcher and its configurator before this isolated process test.'
@@ -18,6 +18,7 @@ public static class ConfigurationTestUi {
  [DllImport("user32.dll", EntryPoint="SendMessageW", CharSet=CharSet.Unicode)] public static extern IntPtr GetText(IntPtr w,uint msg,IntPtr count,System.Text.StringBuilder text);
  [DllImport("user32.dll", CharSet=CharSet.Unicode)] public static extern IntPtr FindWindow(string cls,string title);
  [DllImport("user32.dll")] public static extern IntPtr GetDlgItem(IntPtr w,int id);
+ [DllImport("user32.dll")] public static extern bool IsWindowEnabled(IntPtr w);
  [DllImport("user32.dll")] public static extern bool PostMessage(IntPtr w,uint msg,IntPtr wp,IntPtr lp);
  [DllImport("user32.dll")] public static extern IntPtr SendMessage(IntPtr w,uint msg,IntPtr wp,IntPtr lp);
  [DllImport("user32.dll", EntryPoint="SendMessageW", CharSet=CharSet.Unicode)] public static extern IntPtr SetText(IntPtr w,uint msg,IntPtr wp,string text);
@@ -38,7 +39,7 @@ $checks=0
 function Assert($ok,$label) { if (!$ok) { throw $label }; $script:checks++ }
 function Window($class) {
     for($i=0;$i -lt 100;$i++) {
-        $title=switch($class){'KSwitcher.Main'{'KSwitcher'};'KSwitcher.Settings'{'KSwitcher settings'};'KSwitcher.Snippets'{'Text snippets'}}
+        $title=switch($class){'KSwitcher.Main'{'KSwitcher'};'KSwitcher.Settings'{'KSwitcher settings'};'KSwitcher.Snippets'{'Text snippets'};'KSwitcher.Logs'{'KSwitcher log'}}
         $window=[ConfigurationTestUi]::FindWindow($class,$title)
         if($window -ne [IntPtr]::Zero){return $window}
         Start-Sleep -Milliseconds 50
@@ -56,6 +57,24 @@ function Launch($file,$argument) {
 function Click($window,$id) {
     $null=[ConfigurationTestUi]::PostMessage($window,0x111,[IntPtr]$id,[IntPtr]::Zero)
 }
+function TestLogs {
+    'test-marker' | Set-Content -LiteralPath (Join-Path $root 'data/kswitcher.log')
+    $config=Launch 'KSwitcher.Config.exe' '--logs'
+    $logs=Window 'KSwitcher.Logs'
+    [uint32]$logOwner=0
+    $null=[ConfigurationTestUi]::GetWindowThreadProcessId($logs,[ref]$logOwner)
+    Assert ($logOwner -eq $config.Id -and $logOwner -ne $resident.Id) 'logs run outside the resident input-hook process'
+    $second=Launch 'KSwitcher.Config.exe' '--logs'
+    Assert ($second.WaitForExit(6000)) 'opening logs again reuses the configurator'
+    Assert ((Window 'KSwitcher.Logs') -eq $logs) 'log window is reused'
+    Click $logs 603
+    Assert (!$resident.HasExited) 'refreshing logs leaves resident running'
+    Click $logs 606
+    for($i=0;$i -lt 50 -and (Test-Path -LiteralPath (Join-Path $root 'data/kswitcher.log'));$i++) { Start-Sleep -Milliseconds 50 }
+    Assert (!(Test-Path -LiteralPath (Join-Path $root 'data/kswitcher.log'))) 'clear log is committed through resident process'
+    Click $logs 2
+    Assert ($config.WaitForExit(6000)) 'closing standalone logs exits configurator'
+}
 try {
     New-Item -ItemType Directory -Path (Join-Path $root 'data') -Force | Out-Null
     foreach($file in @('KSwitcher.exe','KSwitcher.Config.exe')) {
@@ -67,6 +86,13 @@ try {
         ConvertTo-Json | Set-Content -LiteralPath $settingsPath -Encoding utf8
     $resident=Launch 'KSwitcher.exe' ''
     $main=Window 'KSwitcher.Main'
+    if ($LogsOnly) {
+        TestLogs
+        $null=[ConfigurationTestUi]::PostMessage($main,0x10,[IntPtr]::Zero,[IntPtr]::Zero)
+        Assert ($resident.WaitForExit(10000)) 'fixture resident exits normally'
+        "Passed $checks log process checks"
+        return
+    }
     $config=Launch 'KSwitcher.Config.exe' ''
     $settings=Window 'KSwitcher.Settings'
     [uint32]$ownerId=0
@@ -102,6 +128,29 @@ try {
     Assert ((Get-Content -LiteralPath $settingsPath -Raw | ConvertFrom-Json).maxItems -eq 321) 'cancel preserves saved settings'
     $config=Launch 'KSwitcher.Config.exe' '--snippets'
     $snippets=Window 'KSwitcher.Snippets'
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0,[IntPtr]::Zero,[IntPtr]::Zero)
+    foreach($id in @(302,303,311,312,313)) {
+        Assert (![ConfigurationTestUi]::IsWindowEnabled([ConfigurationTestUi]::GetDlgItem($snippets,$id))) "snippet control $id disabled without selection"
+    }
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0x111,[IntPtr]310,[IntPtr]::Zero)
+    foreach($id in @(302,303,311,312,313)) {
+        Assert ([ConfigurationTestUi]::IsWindowEnabled([ConfigurationTestUi]::GetDlgItem($snippets,$id))) 'Add enables snippet editing'
+    }
+    $null=[ConfigurationTestUi]::SetText([ConfigurationTestUi]::GetDlgItem($snippets,303),0x0c,[IntPtr]::Zero,'preserved snippet')
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0x111,[IntPtr]310,[IntPtr]::Zero)
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0x111,[IntPtr]311,[IntPtr]::Zero)
+    foreach($id in @(302,303,311,312,313)) {
+        Assert (![ConfigurationTestUi]::IsWindowEnabled([ConfigurationTestUi]::GetDlgItem($snippets,$id))) 'deleting selection disables snippet editing'
+    }
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0x111,[IntPtr]312,[IntPtr]::Zero)
+    $snippetText=[Text.StringBuilder]::new(128)
+    $null=[ConfigurationTestUi]::GetText([ConfigurationTestUi]::GetDlgItem($snippets,303),0x0d,[IntPtr]128,$snippetText)
+    Assert ($snippetText.Length -eq 0) 'marker command cannot edit an unselected snippet'
+    $null=[ConfigurationTestUi]::SendMessage([ConfigurationTestUi]::GetDlgItem($snippets,301),0x186,[IntPtr]0,[IntPtr]::Zero)
+    $null=[ConfigurationTestUi]::SendMessage($snippets,0x111,[IntPtr](301 -bor (1 -shl 16)),[IntPtr]::Zero)
+    Assert ([ConfigurationTestUi]::IsWindowEnabled([ConfigurationTestUi]::GetDlgItem($snippets,303))) 'selecting existing snippet enables editing'
+    $null=[ConfigurationTestUi]::GetText([ConfigurationTestUi]::GetDlgItem($snippets,303),0x0d,[IntPtr]128,$snippetText)
+    Assert ($snippetText.ToString() -eq 'preserved snippet') 'selection restores the retained snippet content'
     $second=Launch 'KSwitcher.Config.exe' ''
     Assert ($second.WaitForExit(6000) -and $second.ExitCode -eq 0) 'settings and snippets share a single process'
     $settings=Window 'KSwitcher.Settings'
@@ -110,6 +159,7 @@ try {
     $config.Refresh(); Assert (!$config.HasExited) 'closing settings keeps open snippets alive'
     Click $snippets 2
     Assert ($config.WaitForExit(6000)) 'closing last window exits configurator'
+    TestLogs
     $config=Launch 'KSwitcher.Config.exe' ''
     $null=Window 'KSwitcher.Settings'
     $null=[ConfigurationTestUi]::PostMessage($main,0x10,[IntPtr]::Zero,[IntPtr]::Zero)

tests/input.cpp

@@ -55,6 +55,14 @@ int main(int argc, char **argv) {
             // Message-only window: no hooks, synthetic input, clipboard changes or visible editor.
             app.window=CreateWindowExW(0,L"STATIC",L"Input tests",0,0,0,0,0,HWND_MESSAGE,nullptr,nullptr,nullptr);
             require(app.window!=nullptr,"message-only test window");
+            require(!ks::confirmUpdatedStartup(L""),"normal startup does not report update success");
+            require(!ks::confirmUpdatedStartup(L"Local.Other.Event"),"unrelated event cannot report update success");
+            auto startedName=L"Local\\KSwitcher.Update.Started.Test."+std::to_wstring(GetCurrentProcessId());
+            require(!ks::confirmUpdatedStartup(startedName),"missing updater handshake does not report success");
+            auto started=CreateEventW(nullptr,TRUE,FALSE,startedName.c_str());
+            require(started&&ks::confirmUpdatedStartup(startedName)&&WaitForSingleObject(started,0)==WAIT_OBJECT_0,
+                    "successful startup signals the updater before reporting completion");
+            CloseHandle(started);
             require(ks::UpdateCheckIntervalMs==21600000,"automatic update interval is six hours");
             require(ks::InputRegressionAccess::updateTimer(app),"update timer rearms and avoids overlapping checks");
             require(ks::InputRegressionAccess::updateResult(app,L"available",L"99.0.0")==L"99.0.0","background update records announced version");
@@ -590,6 +598,35 @@ int main(int argc, char **argv) {
             auto autoOptions=FindWindowW(L"KSwitcher.AutoOptions",nullptr);
             require(autoOptions!=nullptr,"auto-correction options open");
             ShowWindow(autoOptions,SW_HIDE);
+            {
+                require((GetWindowLongPtrW(autoOptions,GWL_STYLE)&WS_THICKFRAME)!=0,
+                        "auto-correction dialog supports resizing");
+                RECT original{}, before[3]{}, after[3]{}, buttonBefore{}, buttonAfter{};
+                GetWindowRect(autoOptions,&original);
+                // Use a client size above the scrolling baseline at every DPI.
+                UINT dpi=GetDpiForWindow(autoOptions);
+                SetWindowPos(autoOptions,nullptr,0,0,MulDiv(800,dpi,96),MulDiv(900,dpi,96),
+                             SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE);
+                RECT baseline{}; GetWindowRect(autoOptions,&baseline);
+                for(int i=0;i<3;++i) GetWindowRect(GetDlgItem(autoOptions,411+i),&before[i]);
+                GetWindowRect(GetDlgItem(autoOptions,IDOK),&buttonBefore);
+                SetWindowPos(autoOptions,nullptr,0,0,baseline.right-baseline.left+240,
+                             baseline.bottom-baseline.top+120,SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE);
+                for(int i=0;i<3;++i) {
+                    GetWindowRect(GetDlgItem(autoOptions,411+i),&after[i]);
+                    require(after[i].right-after[i].left==before[i].right-before[i].left+80 &&
+                            after[i].bottom-after[i].top==before[i].bottom-before[i].top+120,
+                            "dictionary columns share extra width and receive extra height");
+                }
+                GetWindowRect(GetDlgItem(autoOptions,IDOK),&buttonAfter);
+                require(buttonAfter.left-buttonBefore.left==240 && buttonAfter.top-buttonBefore.top==120,
+                        "auto-correction buttons follow bottom-right corner");
+                require(after[0].right<after[1].left && after[1].right<after[2].left &&
+                            after[2].bottom<buttonAfter.top,
+                        "resized dictionary fields and footer do not overlap");
+                SetWindowPos(autoOptions,nullptr,0,0,original.right-original.left,original.bottom-original.top,
+                             SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE);
+            }
             for(int id:{411,412,413}) {
                 RECT control{},client{};
                 GetWindowRect(GetDlgItem(autoOptions,id),&control);

tests/integration.cpp

@@ -1,4 +1,5 @@
 #include "app.h"
+#include <algorithm>
 #include <iostream>
 #include <fstream>
 #include <commctrl.h>
@@ -20,6 +21,12 @@ ks::App *app{};
 HWND host{}, field{};
 ks::Clip saved;
 bool captured = false, failed = false;
+int enterPresses = 0;
+LRESULT CALLBACK observeEnter(HWND w, UINT message, WPARAM wp, LPARAM lp, UINT_PTR, DWORD_PTR)
+{
+    if (message == WM_KEYDOWN && wp == VK_RETURN) ++enterPresses;
+    return DefSubclassProc(w, message, wp, lp);
+}
 int stage = 0, ru = -1, en = -1;
 size_t punctuationCase = 0;
 bool typeDuringCorrection = false, typedDuringCorrection = false;
@@ -280,7 +287,73 @@ LRESULT CALLBACK procedure(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                 break;
             case 17:
                 require(text() == punctuationCases.back().first, "undo preserves custom punctuation");
-                [[fallthrough]];
+                stage = 20;
+                break;
+            case 30:
+            case 32:
+            case 34:
+                if (!captured)
+                {
+                    saved = ks::readClipboard(app->window, 64 * 1024 * 1024);
+                    captured = true;
+                }
+                app->ownSequence = ks::writeClipboard(app->window, ks::textClip(sentinel));
+                app->settings.autoCorrect = stage == 35;
+                app->settings.autoLanguages = {L"en", L"ru"};
+                app->autoPredictor.configure(L"dictionaries", app->settings.autoLanguages);
+                app->settings.snippets = {{L";r", stage == 31 ? L"rider .{cursor}" : L"rider .{cursor}{enter}"}};
+                enterPresses = 0;
+                ActivateKeyboardLayout(app->layouts[en].handle, 0);
+                prepare(L"prefix ", false);
+                {
+                    std::vector<INPUT> inputs;
+                    const std::vector<WORD> keys = stage == 35
+                        ? std::vector<WORD>{VK_OEM_1, 'R', 'G', 'H', 'B', 'D', 'T', 'N', VK_SPACE}
+                        : std::vector<WORD>{VK_OEM_1, 'R', VK_SPACE, 'X'};
+                    for (WORD key : keys)
+                        for (DWORD flags : {DWORD(0), DWORD(KEYEVENTF_KEYUP)})
+                        {
+                            auto input = ks::keyboardInput(key, flags);
+                            input.ki.dwExtraInfo = 123;
+                            inputs.push_back(input);
+                        }
+                    require(SendInput((UINT)inputs.size(), inputs.data(), sizeof(INPUT)) == inputs.size(),
+                            "snippet trigger and following text submitted without a pause");
+                }
+                break;
+            case 31:
+                require(text() == L"prefix rider . x", "snippet expands through keyboard hook and preserves following typing");
+                require(ks::readClipboard(app->window).text() == sentinel, "hook snippet restores clipboard");
+                require(enterPresses == 0, "snippet without Enter marker sends no Enter");
+                stage = 32;
+                break;
+            case 33:
+                require(text() == L"prefix rider .\r\n x", "Enter action precedes buffered typing");
+                require(enterPresses == 1, "Enter marker sends an actual Enter key press");
+                require(ks::readClipboard(app->window).text() == sentinel, "Enter snippet restores clipboard");
+                stage = 34;
+                break;
+            case 35:
+                require(text() == L"prefix rider .\r\nghbdtn ", "snippet replay does not trigger automatic correction");
+                require(app->settings.autoCorrect, "snippet preserves global auto-correction setting");
+                require(enterPresses == 1, "snippet punctuation and Enter survive with auto-correction enabled");
+                {
+                    std::vector<INPUT> inputs;
+                    for (WORD key : std::wstring(L"GHBDTN "))
+                        for (DWORD flags : {DWORD(0), DWORD(KEYEVENTF_KEYUP)})
+                        {
+                            auto input = ks::keyboardInput(key == L' ' ? VK_SPACE : key, flags);
+                            input.ki.dwExtraInfo = 123;
+                            inputs.push_back(input);
+                        }
+                    require(SendInput((UINT)inputs.size(), inputs.data(), sizeof(INPUT)) == inputs.size(),
+                            "normal typing submitted after snippet completes");
+                }
+                break;
+            case 36:
+                require(text() == L"prefix rider .\r\nghbdtn привет ", "automatic correction resumes for subsequent normal typing");
+                finish();
+                break;
             case 20:
                 if (!captured)
                 {
@@ -315,7 +388,44 @@ LRESULT CALLBACK procedure(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             case 19:
                 require(typedDuringCorrection && text() == L"OLDghbdtn fF",
                         "rejected correction collapses selection before replaying typing in original layout");
-                finish();
+                ActivateKeyboardLayout(app->layouts[en].handle, 0);
+                prepare(L"", false);
+                app->autoPredictor.configure(L"dictionaries", app->settings.autoLanguages);
+                {
+                    std::vector<INPUT> inputs;
+                    for (WORD key : std::wstring(L"GHBDTN F"))
+                        for (DWORD flags : {DWORD(0), DWORD(KEYEVENTF_KEYUP)})
+                        {
+                            auto input = ks::keyboardInput(key == L' ' ? VK_SPACE : key, flags);
+                            input.ki.dwExtraInfo = 123;
+                            inputs.push_back(input);
+                        }
+                    require(SendInput((UINT)inputs.size(), inputs.data(), sizeof(INPUT)) == inputs.size(),
+                            "continuous typing submitted in a single batch without a pause after Space");
+                }
+                stage = 21;
+                break;
+            case 21:
+            {
+                require(text() == L"привет а", "automatic correction preserves immediate next-word typing without a pause");
+                auto uk = std::find_if(app->layouts.begin(), app->layouts.end(), [](const auto &layout) {
+                    return ks::layoutLanguage(layout) == L"uk";
+                });
+                require(uk != app->layouts.end(), "Ukrainian layout available for punctuation-key regression");
+                app->settings.autoLanguages = {L"en", L"uk"};
+                app->settings.cycle = {app->layouts[en].id, uk->id};
+                app->settings.autoWords[L"uk"] = {L"робить"};
+                app->autoCorrector = ks::AutoCorrector{};
+                ActivateKeyboardLayout(app->layouts[en].handle, 0);
+                prepare(L"hj,bnm ", false);
+                record(L"hj,bnm ");
+                app->transform(ks::AutoCorrect);
+                stage = 22;
+                break;
+            }
+            case 22:
+                require(text() == L"робить ", "automatic correction selects and converts the whole word across an internal comma");
+                stage = 30;
                 break;
             }
         }
@@ -439,8 +549,11 @@ int main(int argc, char **argv)
                 CreateWindowW(L"EDIT", L"", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_MULTILINE | ES_WANTRETURN,
                               20, 20, 590, 230, host, nullptr, cls.hInstance, nullptr);
             deadline = GetTickCount64() + 30000;
+            SetWindowSubclass(field, observeEnter, 1, 0);
             if (argc > 1 && std::string(argv[1]) == "--typing-only")
                 stage = 20;
+            if (argc > 1 && std::string(argv[1]) == "--snippets-only")
+                stage = 30;
             SetTimer(host, 1, 100, nullptr);
             app->execute();
         }

tests/screenshot_ui.cpp

@@ -24,6 +24,105 @@ int main()
         require(c.pencilCursor!=nullptr,"pencil drawing cursor loads");
         require(c.freehand && !c.pointer && ks::toolCursor(c)==c.pencilCursor,
                 "new screenshot editor starts with the pencil tool");
+        {
+            BYTE savedKeys[256]{},keys[256]{}; GetKeyboardState(savedKeys);
+            std::copy(savedKeys,savedKeys+256,keys); keys[VK_SHIFT]=0; SetKeyboardState(keys);
+            auto mouse=[&](UINT message,POINT p,bool shift=false) {
+                int x=c.view.left+MulDiv(p.x,c.view.right-c.view.left,c.image->width);
+                int y=c.view.top+MulDiv(p.y,c.view.bottom-c.view.top,c.image->height);
+                SendMessageW(window,message,(message==WM_LBUTTONUP?0:MK_LBUTTON)|(shift?MK_SHIFT:0),MAKELPARAM(x,y));
+            };
+            mouse(WM_LBUTTONDOWN,{40,40},true);
+            mouse(WM_MOUSEMOVE,{100,50},true);
+            require(c.stroke.to.x==100 && c.stroke.to.y==40,"Shift constrains pencil horizontally");
+            mouse(WM_MOUSEMOVE,{100,90},true);
+            require(c.stroke.to.x==100 && c.stroke.to.y==40 && c.stroke.points.size()==2,
+                    "50 pixel deviation keeps the current axis");
+            mouse(WM_MOUSEMOVE,{100,91},true);
+            require(c.stroke.to.x==100 && c.stroke.to.y==91 && c.stroke.points.size()==3 && c.stroke.points[1].y==40,
+                    "51 pixel deviation turns vertically and preserves the horizontal segment");
+            mouse(WM_MOUSEMOVE,{70,140});
+            require(c.stroke.to.x==70 && c.stroke.to.y==140 && c.stroke.points.size()==4,
+                    "releasing Shift resumes freehand in the same stroke");
+            SendMessageW(window,WM_KEYDOWN,VK_SHIFT,0);
+            mouse(WM_MOUSEMOVE,{140,150},true);
+            require(c.stroke.to.x==140 && c.stroke.to.y==140 && c.stroke.points[3].x==70,
+                    "pressing Shift mid-stroke anchors at the last drawn point");
+            SendMessageW(window,WM_KEYUP,VK_SHIFT,0);
+            SendMessageW(window,WM_KEYDOWN,VK_SHIFT,0);
+            mouse(WM_MOUSEMOVE,{150,200},true);
+            mouse(WM_LBUTTONUP,{150,210},true);
+            SetKeyboardState(savedKeys);
+            require(c.marks.size()==1 && c.marks[0].to.x==140 && c.marks[0].to.y==210,
+                    "repressing Shift without mouse movement starts a new segment and constrains mouse-up");
+            SendMessageW(window,WM_COMMAND,12,0);
+            require(c.marks.empty(),"mixed freehand and constrained segments undo as one stroke");
+            SendMessageW(window,WM_COMMAND,18,0);
+            require(c.marks.size()==1 && c.marks[0].points.size()==6,"redo preserves constrained stroke geometry");
+            c.marks.clear(); c.selected=-1;
+            for(int sx:{-1,1}) for(int sy:{-1,1}) {
+                mouse(WM_LBUTTONDOWN,{160,120},true);
+                mouse(WM_MOUSEMOVE,{160+sx,120},true);
+                for(int step=2;step<=90;++step)
+                    mouse(WM_MOUSEMOVE,{160+sx*step,120+sy*step},true);
+                require(c.stroke.points.size()==2 && c.stroke.to.x==160+sx*90 && c.stroke.to.y==120+sy*90,
+                        "smooth diagonal after one-pixel horizontal jitter stays diagonal without stairs");
+                mouse(WM_LBUTTONUP,{160+sx*90,120+sy*90},true);
+                c.marks.clear(); c.selected=-1;
+                mouse(WM_LBUTTONDOWN,{160-sx*40,120-sy*70},true);
+                mouse(WM_MOUSEMOVE,{160,120-sy*70},true);
+                for(int step=1;step<=90;++step)
+                    mouse(WM_MOUSEMOVE,{160+sx*step,120-sy*70+sy*step},true);
+                require(c.stroke.points.size()==3 && c.strokeAxis>=3 &&
+                        std::abs(c.stroke.to.x-c.stroke.points[1].x)==std::abs(c.stroke.to.y-c.stroke.points[1].y),
+                        "smooth turn from horizontal into diagonal uses raw mouse direction without stairs");
+                mouse(WM_LBUTTONUP,{160+sx*90,120-sy*70+sy*90},true);
+                c.marks.clear(); c.selected=-1;
+            }
+            for(int sx:{-1,1}) for(int sy:{-1,1}) {
+                mouse(WM_LBUTTONDOWN,{160,120},true);
+                mouse(WM_MOUSEMOVE,{160+sx*60,120+sy*50},true);
+                require(c.stroke.to.x==160+sx*55 && c.stroke.to.y==120+sy*55,
+                        "Shift snaps to exact 45 degree diagonals in all four directions");
+                mouse(WM_LBUTTONUP,{160+sx*60,120+sy*50},true);
+                c.marks.clear(); c.selected=-1;
+            }
+            mouse(WM_LBUTTONDOWN,{40,40},true);
+            mouse(WM_MOUSEMOVE,{100,40},true);
+            mouse(WM_MOUSEMOVE,{160,100},true);
+            require(c.stroke.points.size()==3 && c.stroke.to.x==160 && c.stroke.to.y==100 &&
+                    c.stroke.points[1].x==100 && c.stroke.points[1].y==40,
+                    "large deviation turns a horizontal segment diagonally without losing its corner");
+            mouse(WM_MOUSEMOVE,{200,100},true);
+            require(c.stroke.to.x==180 && c.stroke.to.y==120 && c.stroke.points.size()==3,
+                    "small perpendicular deviation keeps the diagonal axis");
+            mouse(WM_MOUSEMOVE,{260,120},true);
+            require(c.stroke.to.x==260 && c.stroke.to.y==120 && c.stroke.points.size()==4,
+                    "diagonal deviation beyond 50 pixels turns back to horizontal");
+            mouse(WM_LBUTTONUP,{260,120},true);
+            c.marks.clear(); c.selected=-1;
+            for(int sx:{-1,1}) for(int sy:{-1,1}) {
+                POINT start{sx>0?310L:9L,120};
+                mouse(WM_LBUTTONDOWN,start,true);
+                mouse(WM_MOUSEMOVE,{start.x+sx*8,start.y+sy*8},true);
+                mouse(WM_MOUSEMOVE,{sx>0?319L:0L,start.y+sy*25},true);
+                auto end=c.stroke.to;
+                require(end.x>=0 && end.x<320 && end.y>=0 && end.y<240 &&
+                        std::abs(end.x-start.x)==std::abs(end.y-start.y),
+                        "diagonal stays at 45 degrees and inside image boundaries");
+                mouse(WM_LBUTTONUP,{sx>0?319L:0L,start.y+sy*25},true);
+                c.marks.clear(); c.selected=-1;
+            }
+            keys[VK_CONTROL]=0x80; SetKeyboardState(keys);
+            mouse(WM_LBUTTONDOWN,{40,40});
+            mouse(WM_MOUSEMOVE,{100,70});
+            mouse(WM_LBUTTONUP,{120,90});
+            SetKeyboardState(savedKeys);
+            require(c.marks.size()==1 && c.marks[0].points[1].x==100 && c.marks[0].points[1].y==70 &&
+                    c.marks[0].to.x==120 && c.marks[0].to.y==90,
+                    "Ctrl keeps its existing drawing behavior without constraining the pencil");
+            c.marks.clear(); c.selected=-1;
+        }
         for(int size:{32,48,64,96}) {
             auto cursor=(HCURSOR)LoadImageW(app.instance,MAKEINTRESOURCEW(IDC_SCREENSHOT_PENCIL),IMAGE_CURSOR,size,size,0);
             ICONINFO info{};

tests/tests.cpp

@@ -247,6 +247,14 @@ int main(int argc, char **argv)
             options.autoLanguages = {L"en", L"uk", L"ru"};
             options.cycle = {L"en", L"uk", L"ru"};
             supplemental.configure(L"dictionaries", options.autoLanguages);
+            for (auto [typed, expected] : {std::pair{L"ntcn ", L"тест "}, std::pair{L"vfkj ", L"мало "}})
+            {
+                auto shared = supplemental.suggest(typed, 0, layouts, options);
+                require(shared && shared->text == expected && shared->target == 2,
+                        "identical Russian and Ukrainian spelling uses preferred Ukrainian layout");
+            }
+            require(!supplemental.suggest(L"lsv ", 0, layouts, options),
+                    "different dictionary results remain ambiguous");
             auto release = supplemental.suggest(L"релыз ", 1, layouts, options);
             require(release && release->text == L"реліз " && release->target == 2,
                     "supplemental Ukrainian release word corrects from Russian layout");
@@ -268,6 +276,15 @@ int main(int argc, char **argv)
             require(!supplemental.suggest(L"релызик ", 1, layouts, options),
                     "never-correct list takes precedence over personal word");
             options.autoNever.clear();
+            options.autoWords[L"uk"].push_back(L"робить");
+            auto commaWord = supplemental.suggest(L"hj,bnm ", 0, layouts, options);
+            require(commaWord && commaWord->text == L"робить " && commaWord->target == 2,
+                    "personal Ukrainian word accepts a punctuation key that maps to a letter");
+            require(!supplemental.suggest(L"hj,bnm123 ", 0, layouts, options),
+                    "punctuation-key correction still rejects digits");
+            options.autoMinLength = 1;
+            require(!supplemental.suggest(L"ye ", 0, layouts, options),
+                    "known English ye remains protected at minimum length one");
             options.cycle = {L"en", L"ru"};
             require(!supplemental.suggest(L"релызик ", 1, layouts, options),
                     "personal dictionary respects disabled target layouts");
@@ -284,6 +301,12 @@ int main(int argc, char **argv)
         require(ks::transliterate(L"Shchuka") == L"Щука", "reverse transliteration");
         require(ks::parseTemplate(L"a{cursor}b").suffix == L"b", "snippet suffix");
         require(ks::parseTemplate(L"{{cursor}}").text == L"{cursor}", "escaped cursor");
+        require(ks::parseTemplate(L"rider .{enter}").text == L"rider ." &&
+                    ks::parseTemplate(L"rider .{enter}").enters == 1, "Enter is an action, not inserted text");
+        require(ks::parseTemplate(L"a{cursor}b{enter}{enter}").suffix == L"b" &&
+                    ks::parseTemplate(L"a{cursor}b{enter}{enter}").enters == 2, "Enter actions preserve cursor suffix");
+        require(ks::parseTemplate(L"{{enter}}").text == L"{enter}" &&
+                    ks::parseTemplate(L"{{enter}}").enters == 0, "escaped Enter is literal");
         require(ks::parseTemplate(L"{cursor}{cursor}").cursors == 2, "duplicate cursor detection");
         require(ks::Hotkey::parse(L"Ctrl+Alt+Shift+Space")->key == VK_SPACE, "hotkey parse");
         require(!ks::Hotkey::parse(L"Ctrl+F25"), "invalid function key");

tests/update.ps1

@@ -10,6 +10,12 @@ try {
     $binaryInfo = [Diagnostics.FileVersionInfo]::GetVersionInfo((Resolve-Path -LiteralPath $Executable).Path)
     $binaryVersion = Get-StableVersion $binaryInfo.FileVersion
     Assert ($null -ne $binaryVersion) 'executable has a stable version'
+    $header = Get-Content -LiteralPath (Join-Path $PSScriptRoot '../src/update.h') -Raw
+    $match = [regex]::Match($header, 'AppVersion\[\]\s*=\s*L"([0-9.]+)"')
+    Assert ($match.Success -and (Get-StableVersion $match.Groups[1].Value) -eq $binaryVersion) 'updater runtime version matches packaged executable'
+    $cmake = Get-Content -LiteralPath (Join-Path $PSScriptRoot '../CMakeLists.txt') -Raw
+    $projectVersion = [regex]::Match($cmake, 'project\(KSwitcher VERSION ([0-9.]+)')
+    Assert ($projectVersion.Success -and (Get-StableVersion $projectVersion.Groups[1].Value) -eq $binaryVersion) 'CMake version matches packaged executable'
     Assert ($binaryInfo.FileDescription -ceq ('KSwitcher ' + [char]0x2014 + ' native keyboard and clipboard utility')) 'executable description preserves Unicode em dash'
     Assert ((Get-StableVersion 'v0.10.0') -gt (Get-StableVersion 'v0.2.9')) 'numeric versions'
     Assert ($null -eq (Get-StableVersion 'v1.0.0-beta')) 'prerelease rejected'
@@ -24,6 +30,8 @@ try {
     Assert ($null -eq (Select-Release @($release) ([version]'0.3.0'))) 'no downgrade'
     Assert ((Get-StableVersion 'release-v0.5.0') -eq [version]'0.5.0') 'modern stable release tag'
     $modern=@{draft=$false;prerelease=$false;tag_name='release-v0.5.0';assets=$assets}
+    $installedRelease=@{draft=$false;prerelease=$false;tag_name=('release-v'+$binaryInfo.FileVersion);assets=$assets}
+    Assert ($null -eq (Select-Release @($installedRelease) (Get-StableVersion $match.Groups[1].Value))) 'runtime updater does not offer the installed modern release again'
     Assert ((Select-Release @($release,$modern) ([version]'0.4.2')).version -eq 'release-v0.5.0') 'bridge discovers modern channel'
     $draft=@{draft=$true;prerelease=$false;tag_name='v9.0.0';assets=$assets}
     Assert ((Select-Release @($draft,$release) ([version]'0.2.0')).version -eq 'v0.2.1') 'draft ignored'

tests/update_progress.ps1

@@ -0,0 +1,31 @@
+param([string]$PreviewDirectory = (Join-Path $PSScriptRoot '../build/update-preview'), [switch]$Network)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot '../resources/update.ps1') -Library
+[IO.Directory]::CreateDirectory($PreviewDirectory) | Out-Null
+Start-UpdateProgress
+try {
+    if ($script:progressWindow.Status -ne 'Checking for updates') { throw 'Initial progress stage missing' }
+    Show-UpdateProgress 'Downloading update' '42% - 1.6 / 3.9 MB' 42
+    if ($script:progressWindow.Percent -ne 42) { throw 'Determinate download progress missing' }
+    $script:progressWindow.SavePreview((Join-Path $PreviewDirectory 'download.png'))
+    if ($Network) {
+        Receive-File 'https://gitea.hrynco.com/api/v1/repos/hrynco/hrynco-kswitcher/releases?limit=100' (Join-Path $PreviewDirectory 'releases.json') 2MB 'Downloading update'
+        if ($script:progressWindow.Percent -ne 100) { throw 'Real download did not finish at 100 percent' }
+    }
+    foreach ($stage in @('Verifying download','Preparing installation','Closing KSwitcher','Installing update','Restarting KSwitcher','Restoring previous version')) {
+        Show-UpdateProgress $stage 'Update stage under test'
+        if ($script:progressWindow.Status -ne $stage -or $script:progressWindow.Percent -ne -1) { throw "Invalid progress stage: $stage" }
+    }
+    $script:progressWindow.SavePreview((Join-Path $PreviewDirectory 'rollback.png'))
+    $script:progressWindow.Finish('Update completed','KSwitcher 0.6.11 is now running.',$true)
+    if ($script:progressWindow.Status -ne 'Update completed' -or $script:progressWindow.Percent -ne 100) { throw 'Completion state missing' }
+    Start-Sleep -Milliseconds 800 # Let the native progress-bar animation finish before capturing it.
+    $script:progressWindow.SavePreview((Join-Path $PreviewDirectory 'complete.png'))
+    $script:progressWindow.Finish('Update failed',"The updated application did not confirm startup.`r`nThe previous version has been restored and restarted.",$false)
+    if ($script:progressWindow.Status -ne 'Update failed' -or $script:progressWindow.Percent -ne 0) { throw 'Failure state missing' }
+    $script:progressWindow.SavePreview((Join-Path $PreviewDirectory 'failed.png'))
+    'Passed updater progress UI checks'
+} finally {
+    $script:progressWindow.Dispose()
+    $script:progressWindow = $null
+}