CodeMirror 6 editor features and shortcuts, plus the AI assistant modes, Code Review and safe diff-based apply.

Editor & AI Assistant

The core of Gokino is an intelligent editing environment: a professional CodeMirror 6 editor with a context-aware AI assistant docked on the right.

(1) Open tab. (2) Second tab. (3) Save version. (4) Version history.

Professional Editor

Gokino uses CodeMirror 6, optimized for Arduino C/C++ code.

Syntax highlighting: Full color coding for C/C++ and Arduino-specific keywords.
Auto-completion (IntelliSense): Type Serial. to see methods like begin() or println(); type digital to see digitalWrite() / digitalRead().
Diagnostics: Syntax errors appear as red squiggles from the live linter, and compiler errors from GCC are mapped back onto the exact line/column in the editor after a Verify.
Auto-save: The file is saved automatically after a short idle delay, and an orange dot appears on the tab while there are unsaved changes.
Format document: Shift + Alt + F re-indents the whole sketch without changing its logic.
Minimap & breadcrumb: A code overview on the right and a symbol path under the tab bar.
Multiple cursors: Hold Alt (Windows) or Option (Mac) and click.

(1) Chat tab. (2) Review tab. (3) Mode selector. (4) Export chat. (5) Clear chat.

The right sidebar is your AI pair programmer: open it with the Bot button on the Header or Ctrl/Cmd + /.

Modes: Code (write and modify code), Architect (planning, modules, wiring) and Ask (explain, debug, look up) — Ask is the default. A dedicated Debug mode is also used automatically when you press Fix with AI on a compiler error in the Console.
Slash commands (7): /fix, /explain, /refactor, /test, /wiring, /comment, /simulate.
@ Mention: type @ to reference a function in the open file — the AI receives the exact function body.
Chat history is isolated per file; scroll up to load older messages.
Streaming with Stop: responses stream in real time and can be interrupted with the Stop button.

The Review tab audits the current sketch in 4 sub-tabs:

Summary: quality score (0–100) plus RAM/Flash memory estimate.
Issues: findings grouped into bugs, performance, security, style and best practices, with severity filters (critical / high / medium / low).
Suggestions: before/after diffs you can apply (individually or with Apply All).
History: previous review runs for the file.

Choose the review depth (Quick / Standard / Detailed) before running an audit.

Apply / Diff review: the AI's code blocks are never written to your file silently. Pressing Apply opens a diff preview (added lines in green, removed lines in red) where you Accept or Reject the change.
Smart Patch (⚡): for local fixes (changing a variable, a statement or one function), the patch is surgically applied to that section only, preserving the rest of the file.
Snippet blocks (cppfix) are copy-only: short snippets cannot be applied to the whole file, which prevents accidental overwrites.
Multi-file changes are reviewed in a dedicated modal before anything is created.

Chat messages in Code / Ask / Debug mode: 1 credit each.
Architect mode: 2 credits per message.
Code Review: 2 credits per run.
Stream interruption guard: switching files while the AI is streaming asks for confirmation so a half-finished answer is never mixed into another file's chat.

Local privacy panel: when you are editing a file from a Local folder, the assistant shows a consent panel before any local code can be indexed for the cloud.
Export & Clear: the Download button exports the whole conversation as Markdown; the trash button clears the chat after a confirmation.
AI Status: the header of the assistant shows response time and online/offline state; click it for endpoint/API details.