dsh-markdown-input

在 DeepSeek Harness（DSH）的输入框里写 Markdown：列表显示为圆点和复选框，粗体、斜体、行内代码、删除线和代码块实时呈现，Shift+Enter 自动续写列表。发送出去的仍是你输入的 Markdown 原文。

功能

显示效果（只改显示，不改文字）

输入	显示
`- 项目` / `* 项目` / `+ 项目`	`•` 圆点，列表行略微缩进
`- [ ] 待办` / `- [x] 完成`	`☐` / `☑` 复选框，已完成的项加删除线
`1. 第一项`	序号加粗，使用主题品牌色
`> 引用`	左侧竖线，文字变灰
`## 标题`	加粗、放大，`#` 变灰
`粗体` `斜体` `代码` `~~删除~~`	中间文字显示对应格式，符号变灰
```js … ```	等宽字体、底色，关键字、字符串、数字、注释分别上色

圆点、复选框和代码块只对单独成行的内容生效，也就是用 Shift+Enter 换出来的行；粘贴进来的多行文字只做行内高亮。

编辑

Shift+Enter 续写列表：在有内容的列表行上按 Shift+Enter，换行并补上下一个标记。- * + 保持不变，9. 续成 10.，- [x] 续成 - [ ]，> 保持不变，行首缩进保留。
退出列表：在只有标记的空行上按 Shift+Enter，删除该标记。
选中文字加格式：选中一段文字后按 Cmd/Ctrl+B 加 **，Cmd/Ctrl+I 加 *，Cmd/Ctrl+E 加反引号；再按一次去掉。没有选中文字时这些键保持原来的作用，Cmd+B 仍然开关侧边栏。
Enter 行为不变：Enter 发送，Shift+Enter 换行。

插件只会在续写列表和选中加格式时插入文字，其他情况不改动你输入的内容。

安装

需要 dsh CLI 在 PATH 上（npm install -g @deepseek-ai/dsh）。本插件是纯 JavaScript，无需构建。

git clone https://github.com/kyanray-dev/dsh-markdown-input.git
cd dsh-markdown-input
dsh plugin --profile web add ./

然后以该 profile 重启 Harness。DSH Desktop 用户请按 Cmd+Q 完全退出后重新打开。

也可以通过 dsh-market 插件市场安装。

工作原理

高亮使用浏览器的 CSS Custom Highlight API，只影响绘制，不向编辑器插入任何节点。
圆点和复选框：把原来的 - 画成透明，再用 <p> 的 ::before 在同一位置画 • / ☐ / ☑；位置按标记字符的实际大小测量。
行的样式通过给 <p> 添加 class 实现；编辑器的 MutationObserver 不监听属性变化，因此不会被还原。
Shift+Enter 时通过编辑器实例把当前行拆成新段落，并在新段落开头插入标记。段落间隔与行内换行在草稿中同样导出为 \n，发送内容不变。
插件整体包在 try/catch 中：任何异常只会让插件自身停用，不影响 DSH 启动。

限制

标记不会被真正隐藏：** 这类符号会变灰但仍占位置，圆点所在位置仍是原来的 -。这是为了保证发送的文字不变。
粗体用描边模拟，斜体用颜色区分：浏览器的 Highlight API 不支持改字重和字形。
续写依赖编辑器内部字段 __lexicalEditor 与 _pendingEditorState，DSH 升级后可能变化；取不到时退回为原生换行加插入标记，列表行不再缩进，也不显示圆点。
粘贴进来的多行文本位于同一段落内，只做行内高亮。
仅支持 Web 界面（包括 DSH Desktop）。在 DSH Desktop 0.1.7-rc.2 上测试。

卸载

在「设置 → 插件」中关闭或移除 dsh-markdown-input。

许可证

Apache-2.0

English

Markdown authoring in the DeepSeek Harness (DSH) composer: lists show bullets and checkboxes, bold, italic, inline code, strikethrough and fenced code render as you type, and Shift+Enter continues lists. The sent text is still the Markdown you typed.

Features

Presentation (display only, text unchanged)

Input	Display
`- item` / `* item` / `+ item`	`•` bullet, slightly indented
`- [ ] todo` / `- [x] done`	`☐` / `☑` checkbox; done items struck through
`1. first`	number bold in the brand color
`> quote`	left bar, muted text
`## Title`	bold and larger, muted `#`
`bold` `italic` `code` `~~strike~~`	content styled, delimiters muted
```js … ```	monospace block with a background; keywords, strings, numbers and comments coloured

Bullets, checkboxes and code blocks apply to lines that stand alone, i.e. lines made with Shift+Enter; pasted multi-line text gets inline styling only.

Editing

List continuation on Shift+Enter — on a list line with content, Shift+Enter starts a new line with the next marker: - * + repeat, 9. becomes 10., - [x] becomes - [ ], > repeats. Leading indentation is kept.
Leave a list — Shift+Enter on an empty item removes the marker.
Format a selection — with text selected, Cmd/Ctrl+B wraps it in **, Cmd/Ctrl+I in *, Cmd/Ctrl+E in backticks; press again to unwrap. Without a selection the keys keep their usual meaning (Cmd+B still toggles the sidebar).
Enter unchanged — Enter sends, Shift+Enter inserts a newline.

The plugin only inserts text when it continues a list or wraps a selection.

Install

Requires the dsh CLI on PATH (npm install -g @deepseek-ai/dsh). Plain JavaScript, no build step.

git clone https://github.com/kyanray-dev/dsh-markdown-input.git
cd dsh-markdown-input
dsh plugin --profile web add ./

Restart the Harness with that profile. On DSH Desktop, quit with Cmd+Q and reopen.

How it works

Highlights use the CSS Custom Highlight API, which paints ranges without inserting nodes into the editor.
Bullets and checkboxes: the real - is painted transparent and the <p>'s ::before draws • / ☐ / ☑ over it, positioned from the marker's measured box.
Line styles are classes on each line's <p>; the editor's MutationObserver ignores attribute changes, so they are kept.
On Shift+Enter the plugin splits the current line into a new paragraph through the editor instance and types the marker. Paragraph gaps and line breaks both project to \n in the draft, so the sent text is the same.
Everything runs inside try/catch: a failure disables the plugin, never Harness startup.

Limitations

Markers are not removed: delimiters such as ** are muted but still take space, and a bullet sits where the - is. This keeps the sent text identical.
Bold is simulated with a stroke and italic with colour: the Highlight API cannot change font weight or style.
Continuation reads the editor internals __lexicalEditor and _pendingEditorState, which may change in future DSH releases. When they are unavailable the plugin falls back to a native line break plus a typed marker, without indentation or bullets.
Pasted multi-line text shares one paragraph, so it gets inline styling only.
Web UI only (including DSH Desktop). Tested on DSH Desktop 0.1.7-rc.2.

Uninstall

Disable or remove dsh-markdown-input under Settings → Plugins.

License

Apache-2.0

dsh-markdown-input

Install

README