LM Markdown Copilot Preview

在 VS Code 中以可选中文本的方式预览 Markdown，并把所选内容作为引用发送到 VS Code 原生 GitHub Copilot Chat。

Preview Markdown as selectable content in VS Code, then send selected passages as references to the native GitHub Copilot Chat.

简体中文

功能

• Markdown 预览与目录：标题、段落、列表、代码块、图片和 Mermaid 图表；目录支持跳转、折叠与滚动。
• 图片与格式兼容：支持相对路径和工作区图片资源，并兼容常见的 <font color> 与 style="color:..." 写法。
• 选择并引用：选中预览文字后，可同步到 Copilot Chat。每次同步都会追加一个引用，可连续添加多个片段。
• 右键操作：可对选中文字加粗、复制、同步到 Copilot，或定位到对应源码。
• 源码与预览定位：当 VS Code 提供 Copilot Markdown 引用对应的文件和行号时，可定位到预览；也可从源码定位到预览，或在右侧分屏打开对应源码位置。
• 改动查看：预览中可查看当前文件变化、刷新改动列表、跳转上一处/下一处并定位到对应内容。
• 状态保留：编辑或切换预览与文本编辑器时，尽可能保留目录折叠、隐藏、搜索等状态。
• 快捷键：预览获得焦点时，Ctrl+F 显示/隐藏顶部工具栏，Ctrl+H 显示/隐藏整个当前文件变化区域。

开始使用

1. 在 VS Code 中打开一个 .md 文件。默认编辑器为 LM Markdown Preview；如当前使用文本编辑器，可从编辑器类型菜单切换到预览。
2. 在预览中选择需要处理的文字，使用工具栏或右键菜单选择操作。
3. 选择“同步到 Copilot”后，片段会作为引用添加到原生 Copilot Chat。要添加其他片段，重新选择并再次同步即可。
4. 在 Copilot Chat 中输入你的要求。Copilot 负责生成回复和修改；请在 Copilot 中查看改动并决定保留或撤销。

命令

• LM Markdown: Open Selectable Preview：打开可选中文本的 Markdown 预览。
• LM Markdown: Sync Selection to Copilot：将源码中的当前选区同步到 Copilot Chat。
• LM Markdown: Reveal Location in Preview：在预览中定位源码位置。

要求与说明

• 需要 VS Code 1.95 或更高版本。
• Markdown 预览无需 Copilot；将内容同步到 Copilot Chat 需要安装并启用 GitHub Copilot Chat。
• 插件不提供模型或聊天窗口，也不调用自有 AI 服务；对话、生成修改以及原生的保留/撤销操作由 Copilot Chat 处理。
• 预览中的选区按 Markdown 块映射到源文件行范围，并非字符级精确范围，因此引用可能包含同一块中的其他文字。
• 改动列表用于展示文件变化，不等同于 Copilot 原生待审列表；它会合并当前文件的净变化，并可能包含手动编辑。当前会话捕获的编辑事件仅保存在内存中。

English

Features

• Markdown preview and outline — Render headings, paragraphs, lists, code blocks, images, and Mermaid diagrams. Navigate, collapse, and scroll the outline.
• Images and formatting — Supports relative paths, workspace image resources, and common <font color> / style="color:..." markup.
• Select and reference content — Select text in the preview and send it to Copilot Chat. Each sync adds a new reference, so you can add multiple passages.
• Context-menu actions — Bold or copy selected text, sync it to Copilot, or reveal its source location.
• Source/preview navigation — Navigate from a Copilot Markdown reference to the preview when VS Code provides its file and line. You can also reveal a source location from the preview or open it in a side-by-side editor.
• Change review — View and refresh file changes, move to the previous or next change, and navigate to the corresponding content.
• Preserved view state — Outline folding, visibility, search, and related state are preserved when editing or switching between preview and text editor where possible.
• Keyboard shortcuts — With the preview focused, press Ctrl+F to show or hide the top toolbar, and Ctrl+H to show or hide the entire current-file changes panel.

Get started

1. Open a .md file in VS Code. LM Markdown Preview is the default editor. If the file is open as text, use the editor-type menu to switch to the preview.
2. Select the text you want to work with and choose an action from the toolbar or context menu.
3. Choose Sync to Copilot to add the passage as a reference in native Copilot Chat. Select another passage and sync again to add another reference.
4. Enter your request in Copilot Chat. Copilot generates responses and edits; review the changes in Copilot and choose whether to keep or undo them.

Commands

• LM Markdown: Open Selectable Preview — Open the selectable Markdown preview.
• LM Markdown: Sync Selection to Copilot — Send the current source-editor selection to Copilot Chat.
• LM Markdown: Reveal Location in Preview — Reveal a source location in the preview.

Requirements and notes

• Requires VS Code 1.95 or later.
• Markdown preview works without Copilot. GitHub Copilot Chat must be installed and enabled to sync content to Copilot Chat.
• The extension does not provide a model or chat window and does not call its own AI service. Copilot Chat handles conversations, generated edits, and its native keep/undo actions.
• Preview selections map to Markdown block line ranges, not exact character ranges, so a reference may include additional text from the same block.
• The change panel shows file changes and is not the same as Copilot's native review list. It calculates the current net changes and may include manual edits. Captured edit events are kept in memory for the current session only.