🐟 Sameko Dev C++ v1.4.0 Release ⚓

🌟 Version 1.4.0 speaks your language! A Vietnamese and Chinese interface, six new themes with fresh video backgrounds, a redesigned Theme Customizer, Vim Mode, a separate Stderr card, and a long list of fixes for saving, contests, Build & Run and security.

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📦 Downloads

File	For
sameko-dev-cpp-setup-1.4.0.exe	Windows, recommended. Step-by-step installer, also what auto-update uses.
sameko-dev-cpp-1.4.0-portable.zip	Windows portable: extract anywhere and run.
sameko-dev-cpp-1.4.0-linux-x86_64.AppImage	Linux (needs g++ and gdb from your distribution; clangd and astyle for IntelliSense and Format).

The installers are not code-signed yet. If Windows shows "Windows protected your PC", click More info → Run anyway. Installer SHA-256: f184db56cee5cefdc4a9b4d90a4535780c977d0cfd4a33b7d43db80c5f8b1449 (VirusTotal: 0/56) Updating from 1.3.2 installs silently. Your settings, themes and snippets are kept.

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🌏 1. Your Language (#70)

The whole interface now comes in three languages!

• English, Tiếng Việt, 简体中文: pick one in Settings > Appearance > Language.
• Your Code Stays Yours: code, file names and program output are never translated.
• Familiar Words: the Vietnamese interface keeps the words programmers already say, like compiler, build, debug and snippet.

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🎨 2. New Themes (#60)

• New Kawaii Dark & Kawaii Light: new video backgrounds and new colours.
• Pixel Night: the old Kawaii Dark, with its pixel city at night, is still here under a new name.
• Four More Themes: Event Horizon, Catppuccin Mocha, Gruvbox Dark and Crimson.

• Sharper, Lighter Backgrounds: every video background is now 1080p at 60 fps and only 1–8 MB.
• Welcome Card: no longer hides the background.
• Window Buttons: sit in their own island, easy to see on any background.

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🖌️ 3. Theme Customizer, Redesigned

• Looks Like Settings: larger, bolder text, one card per colour and clearer labels.
• Live Preview: click any part of the preview to edit its colour.
• Bigger Backgrounds: pick image or video files up to 512 MB (was 64 MB).

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▶️ 4. Build & Run

• Stderr Card (#56): cerr output gets its own card under Input / Output / Expected, so your debug prints never turn an AC into a WA.
• Show Terminal on Run: turn it off in Settings > Execution and Build & Run leaves your panels as they are. Build errors still open Problems. (suggested on Codeforces)
• Expected Diff: shows at most 2,000 lines, so huge outputs no longer freeze the window.

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⌨️ 5. Editor Upgrades

• Vim Mode: turn it on in Settings > Editor. :w, :q and :wq work, and it has its own shortcut profile.
• Cursor Trail (by @baodao211): a smooth Neovide-style trail follows your cursor.
• Scroll Beyond Last Line (by @baodao211): scroll past the end of the file.
• Argument Placeholders (#67, off by default): choose whether suggestions fill in parameter names or insert just name().
• Indentation per File: as in VS Code. Switch between spaces and tabs from the status bar.
• Built-in Snippets: hide the ones you never use, or edit them.
• Smarter Suggestions: they stay out of strings and comments.

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⚡ 6. Faster & Lighter

• Faster Start: the app opens faster after the first launch.
• clangd Starts When Needed: with your first C++ tab.
• Typing in Large Files: lighter on the CPU.
• Less Background Work: live check waits for a pause, the Explorer filter reads the folder once, and the session is saved only when it changes.
• Smaller Install, plus Monaco 0.57 and Electron 44.9.3.

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🛠️ 7. Fixed Issues & Pull Requests

🐛 Fixed Issues

• [#56] Stderr Card: cerr output in its own card (#56)
• [#60] More Built-in Themes: Event Horizon, Catppuccin Mocha, Gruvbox Dark, Crimson (#60)
• [#67] Argument Placeholders Setting (#67)
• [#70] Chinese & Vietnamese Interface (#70)

🤝 Community Pull Requests

• [#68] Neovide Cursor Trail by @baodao211 (#68)
• [#69] Scroll Beyond Last Line by @baodao211 (#69)

💾 Saving

• No Half-Written Files: after a crash or a full disk, your file is either the old version or the new one.
• A Failed Save Stops Build, Run and F5, so you never run old code by mistake.
• Save As onto an open file no longer overwrites it with old text.
• Auto Save saves every edited tab and retries failures.

🔧 More Fixes

• Contests & Explorer: switching contests keeps statuses, times and approaches; copy, cut and paste ask before replacing a file; moving or renaming folders keeps local history.
• Build & Run: Build & Run runs the program it built, each untitled tab has its own program, long correct output is no longer WA, and batch tests stop at the time limit.
• Editor & Tabs: Ctrl+W, Ctrl+Tab and error marks act on the focused pane, split view is restored, and one file never opens in two tabs.
• Debugger: F5 in split view debugs the focused file with your compiler flags; recursive calls show the right locals.
• Themes: no flash of the default background at startup, and a saved video background is no longer half faded.
• Windows: a downloaded update is offered again after a restart.

🔒 Security

• Themes Cannot Reach Network Paths: a theme could point its background at another computer, and Windows would send it your password hash (NTLM).
• External Console: a file name with & or % can no longer run commands.
• Safer File Serving: files from disk are type-checked, so a subtitle file cannot run as a script.
• DOMPurify 3.4.17: fixes sanitizer bypasses in 3.4.15.

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For full change history, see CHANGELOG.md (github.com).