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"points-on-path": "^0.2.1" + } + }, + "node_modules/rw": { + "version": "1.3.3", + "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz", + "integrity": "sha512-PdhdWy89SiZogBLaw42zdeqtRJ//zFd2PgQavcICDUgJT5oW10QCRKbJ6bg4r0/UY2M6BWd5tkxuGFRvCkgfHQ==", + "license": "BSD-3-Clause" + }, + "node_modules/safer-buffer": { + "version": "2.1.2", + "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz", + "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==", + "license": "MIT" + }, "node_modules/shiki": { "version": "4.5.0", "resolved": "https://registry.npmjs.org/shiki/-/shiki-4.5.0.tgz", @@ -1905,6 +3038,12 @@ "integrity": "sha512-XXWIQt633/EpAFx8aZDOTjBzrCaGmhvEQlQo6MVPfa2OzO2cWo+4hV9h+6UkHYlXGfy+ODXKUdP7Pthmcu5ATw==", "license": "MIT" }, + "node_modules/stylis": { + "version": "4.4.0", + "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.4.0.tgz", + "integrity": "sha512-5Z9ZpRzfuH6l/UAvCPAPUo3665Nk2wLaZU3x+TLHKVzIz33+sbJqbtrYoC3KD4/uVOr2Zp+L0LySezP9OHV9yA==", + "license": "MIT" + }, "node_modules/tinybench": { "version": "6.2.2", "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-6.2.2.tgz", @@ -1919,7 +3058,6 @@ "version": "1.3.1", "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.3.1.tgz", "integrity": "sha512-GCvB3aoys96IuDFBMcTB46JOR6mdMtAToqwiW8JlWhsoh1mhHi/xn9ss/Dg7N555GiJyEt2qzoG/NHCwM6h1EA==", - "dev": true, "license": "MIT", "engines": { "node": ">=18" @@ -1952,6 +3090,15 @@ "url": "https://github.com/sponsors/wooorm" } }, + "node_modules/ts-dedent": { + "version": "2.3.0", + "resolved": "https://registry.npmjs.org/ts-dedent/-/ts-dedent-2.3.0.tgz", + "integrity": "sha512-JfJeIHke7y2egdGGgRAvpCwYFUsHlM2gPcrVOxFkznt/4uzQ7HFmvE63iFHVLBJNDuyDOQgijDK/tXH/f6Msjg==", + "license": "MIT", + "engines": { + "node": ">=6.10" + } + }, "node_modules/typescript": { "version": "6.0.3", "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz", @@ -2041,6 +3188,19 @@ "url": "https://opencollective.com/unified" } }, + "node_modules/uuid": { + "version": "14.0.3", + "resolved": "https://registry.npmjs.org/uuid/-/uuid-14.0.3.tgz", + "integrity": "sha512-Sc5u1VVln93y1Xnz4R+CunOZc7R9LUcTmhj7Rc7Eg3HVcf7rVn2FOoa812fe0W8p3jD7xeoGSYbfqCGGH2B6xw==", + "funding": [ + "https://github.com/sponsors/broofa", + "https://github.com/sponsors/ctavan" + ], + "license": "MIT", + "bin": { + "uuid": "dist-node/bin/uuid" + } + }, "node_modules/vfile": { "version": "6.0.3", "resolved": "https://registry.npmjs.org/vfile/-/vfile-6.0.3.tgz", diff --git a/web/package.json b/web/package.json index f04dc07..16b1712 100644 --- a/web/package.json +++ b/web/package.json @@ -17,6 +17,9 @@ "@lezer/common": "^1.5.3", "@lezer/highlight": "^1.2.5", "@lezer/markdown": "^1.8.0", + "gemoji": "^8.1.0", + "katex": "^0.18.11", + "mermaid": "^12.2.0", "shiki": "^4.5.0", "vue": "^3.5.44" }, diff --git a/web/src/editor/blocks.ts b/web/src/editor/blocks.ts new file mode 100644 index 0000000..e8f6ba0 --- /dev/null +++ b/web/src/editor/blocks.ts @@ -0,0 +1,58 @@ +import { syntaxTree } from '@codemirror/language' +import { StateField, type EditorState, type Range } from '@codemirror/state' +import { Decoration, EditorView, type DecorationSet } from '@codemirror/view' +import type { SyntaxNode } from '@lezer/common' +import { codeContentRange, fenceLanguage } from './codeblocks' +import { editorFocused, setEditorFocus } from './focus' +import { MathWidget, MermaidWidget } from './widgets' + +// 公式块与 Mermaid 图表：未编辑时整块替换为渲染结果；光标在块内时显示源码，并在下方实时预览。 +// 跨行的块级替换只能由 StateField 提供；与表格一样只处理顶层的块 + +/** 返回块的源码内容及其相对块起点的偏移（点击渲染结果时光标落在内容开头） */ +function blockContent(state: EditorState, node: SyntaxNode): { text: string; offset: number } | null { + if (node.name === 'BlockMath') { + const marks = node.getChildren('BlockMathMark') + const from = state.doc.lineAt(node.from).to + 1 + const to = marks.length > 1 ? state.doc.lineAt(marks[marks.length - 1].from).from - 1 : node.to + return { text: from <= to ? state.sliceDoc(from, to) : '', offset: Math.min(from, node.to) - node.from } + } + if (node.name === 'FencedCode') { + const info = node.getChild('CodeInfo') + if (!info || fenceLanguage(state, info.from, info.to) !== 'mermaid') return null + const { from, to } = codeContentRange(state, node) + return { text: state.sliceDoc(from, to), offset: from - node.from } + } + return null +} + +function buildBlocks(state: EditorState): DecorationSet { + const out: Range[] = [] + const sel = state.field(editorFocused) ? state.selection.ranges : [] + for (let node = syntaxTree(state).topNode.firstChild; node; node = node.nextSibling) { + const content = blockContent(state, node) + if (!content) continue + const editing = sel.some((r) => r.from <= node.to && r.to >= node.from) + const widget = (editOffset: number | null) => + node.name === 'BlockMath' ? new MathWidget(content.text, true, editOffset) : new MermaidWidget(content.text, editOffset) + if (editing) out.push(Decoration.widget({ widget: widget(null), block: true, side: 1 }).range(node.to)) + else out.push(Decoration.replace({ widget: widget(content.offset), block: true }).range(node.from, node.to)) + } + return Decoration.set(out) +} + +export const renderedBlocks = StateField.define({ + create: buildBlocks, + update(value, tr) { + if ( + tr.docChanged || + tr.selection || + tr.effects.some((e) => e.is(setEditorFocus)) || + syntaxTree(tr.startState) !== syntaxTree(tr.state) + ) { + return buildBlocks(tr.state) + } + return value + }, + provide: (f) => EditorView.decorations.from(f), +}) diff --git a/web/src/editor/focus.ts b/web/src/editor/focus.ts new file mode 100644 index 0000000..7ae7787 --- /dev/null +++ b/web/src/editor/focus.ts @@ -0,0 +1,37 @@ +import { StateEffect, StateField } from '@codemirror/state' +import { ViewPlugin, type EditorView, type ViewUpdate } from '@codemirror/view' + +// 编辑器焦点状态。块级渲染组件（表格、公式块、Mermaid）由 StateField 提供，拿不到视图的焦点， +// 由视图插件把焦点变化同步进状态：获得焦点且光标在块内时显示源码，否则渲染 +// （打开笔记时光标默认在文首，不应因此展开开头的块） +export const setEditorFocus = StateEffect.define() + +export const editorFocused = StateField.define({ + create: () => false, + update(value, tr) { + for (const e of tr.effects) if (e.is(setEditorFocus)) value = e.value + return value + }, +}) + +const focusTracker = ViewPlugin.fromClass( + class { + constructor(readonly view: EditorView) { + this.sync() + } + update(u: ViewUpdate) { + if (u.focusChanged) this.sync() + } + // 不能在 update 中同步 dispatch，推迟到微任务 + sync() { + queueMicrotask(() => { + const focused = this.view.hasFocus + if (this.view.state.field(editorFocused, false) !== undefined && this.view.state.field(editorFocused) !== focused) { + this.view.dispatch({ effects: setEditorFocus.of(focused) }) + } + }) + } + }, +) + +export const editorFocus = [editorFocused, focusTracker] diff --git a/web/src/editor/index.ts b/web/src/editor/index.ts index 9722e6a..27ef1d4 100644 --- a/web/src/editor/index.ts +++ b/web/src/editor/index.ts @@ -1,14 +1,28 @@ import { defaultKeymap, history, historyKeymap, indentWithTab, redo } from '@codemirror/commands' import { markdownKeymap, markdownLanguage } from '@codemirror/lang-markdown' +import { Language } from '@codemirror/language' import { EditorState, Prec, type Extension } from '@codemirror/state' import { drawSelection, EditorView, keymap, type ViewUpdate } from '@codemirror/view' +import type { MarkdownParser } from '@lezer/markdown' +import { typoraExtensions } from '../markdown/extensions' +import { renderedBlocks } from './blocks' import { codeBlockHighlight } from './codeblocks' +import { editorFocus } from './focus' import { livePreview, resolveImageUrl } from './livepreview' import { tableEditing } from './table' import { markdownTheme } from './theme' export { pasteImages } from './paste' +// 在 lang-markdown 的语法集（CommonMark + GFM + 上下标 + emoji）上加 Typora 扩展。 +// 沿用其语言数据，markdownKeymap 中的命令据此识别 Markdown（isActiveAt 按语言数据判断） +const rawmarkLanguage = new Language( + markdownLanguage.data, + (markdownLanguage.parser as MarkdownParser).configure(typoraExtensions), + [], + 'markdown', +) + export interface EditorStateOptions { doc: string resolveImage?: (src: string) => string @@ -25,12 +39,14 @@ export function createEditorState(opts: EditorStateOptions): EditorState { EditorView.lineWrapping, // 不用 lang-markdown 的 markdown()：它会静态引入 lang-html/css/javascript 用于嵌套 HTML 高亮， // 首屏包 gzip 从约 108 KB 增至约 180 KB，而 Live Preview 不需要 HTML 高亮 - markdownLanguage, + rawmarkLanguage, Prec.high(keymap.of(markdownKeymap)), markdownTheme, livePreview, codeBlockHighlight, + editorFocus, tableEditing, + renderedBlocks, // CodeMirror 只在 Linux/Mac 上把 Ctrl/Cmd+Shift+Z 绑定为重做，Windows 上会退化成撤销； // 与 Typora、VS Code 保持一致，所有平台都支持 keymap.of([indentWithTab, { key: 'Mod-Shift-z', run: redo, preventDefault: true }, ...defaultKeymap, ...historyKeymap]), diff --git a/web/src/editor/livepreview.ts b/web/src/editor/livepreview.ts index 84d16c8..2004498 100644 --- a/web/src/editor/livepreview.ts +++ b/web/src/editor/livepreview.ts @@ -3,7 +3,18 @@ import { Facet, type EditorState, type Range } from '@codemirror/state' import { Decoration, EditorView, ViewPlugin, type DecorationSet, type ViewUpdate } from '@codemirror/view' import type { SyntaxNode } from '@lezer/common' import { codeContentRange, fenceLanguage, fencedCodeAt } from './codeblocks' -import { BulletWidget, CheckboxWidget, CodeHeaderWidget, HorizontalRuleWidget, ImageWidget } from './widgets' +import { + BulletWidget, + CheckboxWidget, + CodeHeaderWidget, + EmojiWidget, + FootnoteRefWidget, + HorizontalRuleWidget, + ImageWidget, + MathWidget, + TocWidget, + type TocEntry, +} from './widgets' // 把笔记中书写的图片地址解析为浏览器可加载的 URL（相对路径需结合笔记所在目录） export const resolveImageUrl = Facet.define<(src: string) => string, (src: string) => string>({ @@ -13,6 +24,10 @@ export const resolveImageUrl = Facet.define<(src: string) => string, (src: strin const hidden = Decoration.replace({}) const inlineCode = Decoration.mark({ class: 'cm-rm-inline-code' }) const linkText = Decoration.mark({ class: 'cm-rm-link' }) +const highlightText = Decoration.mark({ class: 'cm-rm-highlight' }) +const superscriptText = Decoration.mark({ class: 'cm-rm-sup' }) +const subscriptText = Decoration.mark({ class: 'cm-rm-sub' }) +const footnoteLabel = Decoration.mark({ class: 'cm-rm-footnote-label' }) const lineDecos = new Map() function lineDeco(cls: string): Decoration { @@ -66,6 +81,32 @@ function buildDecorations(view: EditorView): DecorationSet { return end } + // 脚注定义（标签 → 内容）与目录条目，只在可见区域出现相应语法时才计算 + let footnoteMap: Map | undefined + function footnotes() { + if (!footnoteMap) { + footnoteMap = new Map() + for (let n = syntaxTree(state).topNode.firstChild; n; n = n.nextSibling) { + if (n.name !== 'FootnoteDefinition') continue + const label = n.getChild('FootnoteLabel')! + footnoteMap.set(state.sliceDoc(label.from + 2, label.to - 2), state.sliceDoc(label.to, n.to).trim()) + } + } + return footnoteMap + } + + function tocEntries(): TocEntry[] { + const entries: TocEntry[] = [] + for (let n = syntaxTree(state).topNode.firstChild; n; n = n.nextSibling) { + const m = /^(ATX|Setext)Heading(\d)$/.exec(n.name) + if (!m) continue + const raw = m[1] === 'ATX' ? state.sliceDoc(n.from, n.to).replace(/^#+\s*/, '').replace(/\s+#+\s*$/, '') : doc.lineAt(n.from).text + const text = raw.replace(/\*\*|__|==|~~|`/g, '').trim() + if (text) entries.push({ level: Number(m[2]), text, pos: n.from }) + } + return entries + } + for (const { from, to } of view.visibleRanges) { syntaxTree(state).iterate({ from, @@ -90,8 +131,51 @@ function buildDecorations(view: EditorView): DecorationSet { case 'StrikethroughMark': case 'SuperscriptMark': case 'SubscriptMark': + case 'HighlightMark': if (!touches(node.parent!)) hide(node.from, node.to) return + case 'Highlight': + out.push(highlightText.range(node.from, node.to)) + return + case 'Superscript': + out.push(superscriptText.range(node.from, node.to)) + return + case 'Subscript': + out.push(subscriptText.range(node.from, node.to)) + return + case 'InlineMath': + if (!touches(node) && lineOf(node.from) === lineOf(node.to)) { + const widget = new MathWidget(state.sliceDoc(node.from + 1, node.to - 1), false, 1) + out.push(Decoration.replace({ widget }).range(node.from, node.to)) + } + return false + case 'Emoji': + if (!touches(node)) out.push(Decoration.replace({ widget: new EmojiWidget(state.sliceDoc(node.from + 1, node.to - 1)) }).range(node.from, node.to)) + return + case 'FootnoteReference': + if (!touches(node)) { + const label = state.sliceDoc(node.from + 2, node.to - 1) + out.push(Decoration.replace({ widget: new FootnoteRefWidget(label, footnotes().get(label)) }).range(node.from, node.to)) + } + return + case 'FootnoteDefinition': + classLines(node.from, node.to, () => 'cm-rm-footnote') + return + case 'FootnoteLabel': + if (!isActive(node.from)) out.push(footnoteLabel.range(node.from, node.to)) + return + case 'TableOfContents': + if (!isActive(node.from)) out.push(Decoration.replace({ widget: new TocWidget(tocEntries()) }).range(node.from, node.to)) + return + case 'FrontMatter': + classLines(node.from, node.to, (n, first, last) => + n === first ? 'cm-rm-frontmatter cm-rm-frontmatter-begin' : n === last ? 'cm-rm-frontmatter cm-rm-frontmatter-end' : 'cm-rm-frontmatter', + ) + return false + case 'BlockMath': + // 未编辑时由 blocks.ts 整块替换为渲染结果，这里只负责编辑时的源码样式 + classLines(node.from, node.to, () => 'cm-rm-math-source') + return false case 'InlineCode': out.push(inlineCode.range(node.from, node.to)) return diff --git a/web/src/editor/table.test.ts b/web/src/editor/table.test.ts index 962e432..885005c 100644 --- a/web/src/editor/table.test.ts +++ b/web/src/editor/table.test.ts @@ -1,6 +1,7 @@ import { describe, expect, it } from 'vitest' import { createEditorState } from './index' -import { setEditorFocus, tableField } from './table' +import { setEditorFocus } from './focus' +import { tableField } from './table' const doc = '| a | b |\n| --- | --- |\n| 1 | 2 |\n\n正文' diff --git a/web/src/editor/table.ts b/web/src/editor/table.ts index 3e40c0b..34522bc 100644 --- a/web/src/editor/table.ts +++ b/web/src/editor/table.ts @@ -1,9 +1,11 @@ import { isolateHistory, redo, undo } from '@codemirror/commands' import { syntaxTree } from '@codemirror/language' -import { StateEffect, StateField, type EditorState, type Range } from '@codemirror/state' -import { Decoration, EditorView, ViewPlugin, WidgetType, type DecorationSet, type ViewUpdate } from '@codemirror/view' +import { StateField, type EditorState, type Range } from '@codemirror/state' +import { Decoration, EditorView, WidgetType, type DecorationSet } from '@codemirror/view' import type { SyntaxNode } from '@lezer/common' import { renderInlineMarkdown } from '../markdown/html' +import { hydrate } from '../markdown/render' +import { editorFocused, setEditorFocus } from './focus' type Align = '' | 'left' | 'center' | 'right' @@ -94,6 +96,11 @@ function findTable(state: EditorState, pos: number): SyntaxNode | null { // ---- 渲染组件 ---- +function renderCell(cell: HTMLElement, raw: string) { + cell.innerHTML = renderInlineMarkdown(raw) + hydrate(cell) +} + interface WidgetState { model: TableModel // 最近编辑的单元格，工具栏操作以它为准 @@ -164,7 +171,7 @@ class TableWidget extends WidgetType { cell.textContent = raw placeCaretAtEnd(cell) } - } else if (old.rows[r].cells[c] !== raw) cell.innerHTML = renderInlineMarkdown(raw) + } else if (old.rows[r].cells[c] !== raw) renderCell(cell, raw) }) return true } @@ -184,7 +191,7 @@ class TableWidget extends WidgetType { cell.dataset.r = String(r) cell.dataset.c = String(c) if (this.model.aligns[c]) cell.style.textAlign = this.model.aligns[c] - cell.innerHTML = renderInlineMarkdown(raw) + renderCell(cell, raw) bindCell(view, wrap, cell) tr.append(cell) }) @@ -356,7 +363,7 @@ function bindCell(view: EditorView, wrap: HTMLElement, cell: HTMLElement) { cell.addEventListener('blur', () => { cell.removeAttribute('contenteditable') - cell.innerHTML = renderInlineMarkdown(st().model.rows[r()]?.cells[c()] ?? '') + renderCell(cell, st().model.rows[r()]?.cells[c()] ?? '') }) const moveTo = (nr: number, nc: number) => { @@ -402,39 +409,8 @@ function bindCell(view: EditorView, wrap: HTMLElement, cell: HTMLElement) { // ---- 装饰 ---- -// StateField 拿不到视图的焦点状态，由视图插件把焦点变化同步进状态 -const setEditorFocus = StateEffect.define() - -const editorFocused = StateField.define({ - create: () => false, - update(value, tr) { - for (const e of tr.effects) if (e.is(setEditorFocus)) value = e.value - return value - }, -}) - -const focusTracker = ViewPlugin.fromClass( - class { - constructor(readonly view: EditorView) { - this.sync() - } - update(u: ViewUpdate) { - if (u.focusChanged) this.sync() - } - // 不能在 update 中同步 dispatch，推迟到微任务 - sync() { - queueMicrotask(() => { - const focused = this.view.hasFocus - if (this.view.state.field(editorFocused, false) !== undefined && this.view.state.field(editorFocused) !== focused) { - this.view.dispatch({ effects: setEditorFocus.of(focused) }) - } - }) - } - }, -) - // 块级替换装饰跨越多行，只能由 StateField 提供，不能来自 ViewPlugin。 -// 与其他语法一致：编辑器获得焦点且光标在表格内时才显示源码（打开笔记时光标默认在文首，不应因此展开开头的表格） +// 与其他语法一致：编辑器获得焦点且光标在表格内时才显示源码（见 focus.ts） function buildTables(state: EditorState): DecorationSet { const out: Range[] = [] const sel = state.field(editorFocused) ? state.selection.ranges : [] @@ -465,6 +441,4 @@ export const tableField = StateField.define({ provide: (f) => EditorView.decorations.from(f), }) -export { setEditorFocus } - -export const tableEditing = [editorFocused, tableField, focusTracker] +export const tableEditing = tableField diff --git a/web/src/editor/widgets.ts b/web/src/editor/widgets.ts index 1dc70a5..ce17ddc 100644 --- a/web/src/editor/widgets.ts +++ b/web/src/editor/widgets.ts @@ -1,4 +1,5 @@ -import { WidgetType, type EditorView } from '@codemirror/view' +import { EditorView, WidgetType } from '@codemirror/view' +import { emojiFor, renderMath, renderMermaid } from '../markdown/render' export class BulletWidget extends WidgetType { eq() { @@ -156,3 +157,202 @@ export class ImageWidget extends WidgetType { return 200 } } + +// ---- 扩展语法（公式、Mermaid、emoji、脚注、目录） ---- + +// 点击渲染结果时把光标移到源码中（offset 为相对组件起点的位置）以展开编辑，做法同图片 +function editOnMousedown(el: HTMLElement, view: EditorView, offset: number) { + el.addEventListener('mousedown', (e) => { + if (e.button !== 0) return + e.preventDefault() + view.dispatch({ selection: { anchor: Math.min(view.posAtDOM(el) + offset, view.state.doc.length) } }) + view.focus() + }) +} + +function showRenderError(el: HTMLElement, err: unknown) { + const pre = document.createElement('pre') + pre.className = 'cm-rm-render-error' + pre.textContent = err instanceof Error ? err.message : String(err) + el.replaceChildren(pre) +} + +/** + * 公式。editOffset 为 null 时是编辑中显示在源码下方的预览（不响应点击，内容变化时原地更新）， + * 否则是替换源码的渲染结果，点击后光标移到源码 editOffset 处 + */ +export class MathWidget extends WidgetType { + constructor( + readonly tex: string, + readonly display: boolean, + readonly editOffset: number | null, + ) { + super() + } + eq(other: MathWidget) { + return other.tex === this.tex && other.display === this.display && other.editOffset === this.editOffset + } + toDOM(view: EditorView) { + const el = document.createElement(this.display ? 'div' : 'span') + el.className = this.display ? 'cm-rm-math-block' : 'cm-rm-math' + if (this.editOffset === null) el.classList.add('cm-rm-preview') + else editOnMousedown(el, view, this.editOffset) + this.render(el, view) + return el + } + // 只复用预览元素：从渲染结果切到编辑时，编辑器会尝试用新组件更新旧元素（旧元素带点击编辑的监听） + updateDOM(dom: HTMLElement, view: EditorView) { + if (this.editOffset !== null || !dom.classList.contains('cm-rm-preview')) return false + this.render(dom, view) + return true + } + private render(el: HTMLElement, view: EditorView) { + if (!this.tex.trim()) { + el.textContent = '空公式' + el.classList.add('cm-rm-placeholder') + return + } + el.classList.remove('cm-rm-placeholder') + // 加载 KaTeX 前先显示源码 + if (!el.firstChild) el.textContent = this.tex + void renderMath(el, this.tex, this.display).then(() => view.requestMeasure()) + } + get estimatedHeight() { + return this.display ? 60 : -1 + } +} + +const mermaidSeqs = new WeakMap() +let mermaidSeq = 0 + +/** Mermaid 图表，editOffset 含义同 MathWidget */ +export class MermaidWidget extends WidgetType { + constructor( + readonly code: string, + readonly editOffset: number | null, + ) { + super() + } + eq(other: MermaidWidget) { + return other.code === this.code && other.editOffset === this.editOffset + } + toDOM(view: EditorView) { + const el = document.createElement('div') + el.className = 'cm-rm-mermaid' + if (this.editOffset === null) el.classList.add('cm-rm-preview') + else editOnMousedown(el, view, this.editOffset) + el.textContent = '图表渲染中…' + this.render(el, view) + return el + } + // 只复用预览元素：从渲染结果切到编辑时，编辑器会尝试用新组件更新旧元素（旧元素带点击编辑的监听） + updateDOM(dom: HTMLElement, view: EditorView) { + if (this.editOffset !== null || !dom.classList.contains('cm-rm-preview')) return false + this.render(dom, view) + return true + } + // 渲染是异步的，连续输入时只采用最后一次的结果，并保留旧图直到新图就绪，避免闪烁 + private render(el: HTMLElement, view: EditorView) { + const seq = ++mermaidSeq + mermaidSeqs.set(el, seq) + if (!this.code.trim()) { + el.textContent = '空图表' + return + } + renderMermaid(this.code).then( + (svg) => { + if (mermaidSeqs.get(el) !== seq) return + el.innerHTML = svg + view.requestMeasure() + }, + (err) => { + if (mermaidSeqs.get(el) !== seq) return + showRenderError(el, err) + view.requestMeasure() + }, + ) + } + get estimatedHeight() { + return 240 + } +} + +export class EmojiWidget extends WidgetType { + constructor(readonly name: string) { + super() + } + eq(other: EmojiWidget) { + return other.name === this.name + } + toDOM(view: EditorView) { + const el = document.createElement('span') + el.className = 'cm-rm-emoji' + // 名称表加载前或名称未知时显示原文 + el.textContent = `:${this.name}:` + void emojiFor(this.name).then((e) => { + if (e) el.textContent = e + }) + editOnMousedown(el, view, 1) + return el + } +} + +export class FootnoteRefWidget extends WidgetType { + constructor( + readonly label: string, + readonly definition: string | undefined, + ) { + super() + } + eq(other: FootnoteRefWidget) { + return other.label === this.label && other.definition === this.definition + } + toDOM(view: EditorView) { + const el = document.createElement('sup') + el.className = 'cm-rm-footnote-ref' + el.textContent = this.label + el.title = this.definition ?? '未找到脚注定义' + editOnMousedown(el, view, 2) + return el + } +} + +export interface TocEntry { + level: number + text: string + pos: number +} + +export class TocWidget extends WidgetType { + constructor(readonly entries: TocEntry[]) { + super() + } + eq(other: TocWidget) { + return JSON.stringify(other.entries) === JSON.stringify(this.entries) + } + toDOM(view: EditorView) { + const el = document.createElement('div') + el.className = 'cm-rm-toc' + if (!this.entries.length) { + el.textContent = '目录（还没有标题）' + el.classList.add('cm-rm-placeholder') + } + const minLevel = Math.min(...this.entries.map((e) => e.level)) + for (const entry of this.entries) { + const item = document.createElement('a') + item.className = 'cm-rm-toc-item' + item.style.paddingLeft = `${(entry.level - minLevel) * 1.2}em` + item.textContent = entry.text + item.addEventListener('mousedown', (e) => { + e.preventDefault() + e.stopPropagation() + view.dispatch({ selection: { anchor: entry.pos }, effects: EditorView.scrollIntoView(entry.pos, { y: 'start', yMargin: 24 }) }) + view.focus() + }) + el.append(item) + } + // 点击目录空白处展开 [TOC] 源码 + editOnMousedown(el, view, 0) + return el + } +} diff --git a/web/src/markdown/extensions.test.ts b/web/src/markdown/extensions.test.ts new file mode 100644 index 0000000..de76734 --- /dev/null +++ b/web/src/markdown/extensions.test.ts @@ -0,0 +1,64 @@ +import { parser as base } from '@lezer/markdown' +import { GFM } from '@lezer/markdown' +import { describe, expect, it } from 'vitest' +import { typoraExtensions } from './extensions' + +const parser = base.configure([GFM, ...typoraExtensions]) + +/** 列出指定类型节点覆盖的原文 */ +function nodes(src: string, name: string): string[] { + const out: string[] = [] + parser.parse(src).iterate({ + enter(n) { + if (n.name === name) out.push(src.slice(n.from, n.to)) + }, + }) + return out +} + +describe('Typora 扩展语法', () => { + it('==高亮==', () => { + expect(nodes('a ==b c== d', 'Highlight')).toEqual(['==b c==']) + expect(nodes('a == b ==', 'Highlight')).toEqual([]) + expect(nodes('x === y', 'Highlight')).toEqual([]) + }) + + it('行内公式：金额与转义不误判', () => { + expect(nodes('设 $x^2 + y$ 为', 'InlineMath')).toEqual(['$x^2 + y$']) + expect(nodes('价格 $5 和 $10', 'InlineMath')).toEqual([]) + expect(nodes('$ x$ 与 $x $', 'InlineMath')).toEqual([]) + expect(nodes('\\$x$ 不是公式', 'InlineMath')).toEqual([]) + expect(nodes('$a\\$b$', 'InlineMath')).toEqual(['$a\\$b$']) + expect(nodes('`$x$`', 'InlineMath')).toEqual([]) + }) + + it('公式块：可打断段落，只在顶层识别，未闭合延续到文末', () => { + expect(nodes('段落\n$$\na^2\n$$\n后文', 'BlockMath')).toEqual(['$$\na^2\n$$']) + expect(nodes('> $$\n> x\n> $$\n\n外面', 'BlockMath')).toEqual([]) + expect(nodes('$$\nx\n', 'BlockMath')).toEqual(['$$\nx\n']) + expect(nodes('$$x$$', 'BlockMath')).toEqual([]) + }) + + it('脚注引用与定义', () => { + expect(nodes('正文[^1]与[^note]。', 'FootnoteReference')).toEqual(['[^1]', '[^note]']) + expect(nodes('[^ 1] 不是脚注', 'FootnoteReference')).toEqual([]) + expect(nodes('[^1]: 第一行\n继续\n\n下一段', 'FootnoteDefinition')).toEqual(['[^1]: 第一行\n继续']) + expect(nodes('[^1]: 有 **粗体**', 'StrongEmphasis')).toEqual(['**粗体**']) + expect(nodes('[^1]: x', 'LinkReference')).toEqual([]) + }) + + it('[TOC] 独占一行', () => { + expect(nodes('[TOC]\n\n# 标题', 'TableOfContents')).toEqual(['[TOC]']) + expect(nodes('[toc] ', 'TableOfContents')).toEqual(['[toc] ']) + expect(nodes('见 [TOC] 处', 'TableOfContents')).toEqual([]) + }) + + it('YAML front matter 只在文档首行', () => { + expect(nodes('---\ntitle: a\n---\n# 正文', 'FrontMatter')).toEqual(['---\ntitle: a\n---']) + expect(nodes('---\ntitle: a\n...\n正文', 'FrontMatter')).toEqual(['---\ntitle: a\n...']) + expect(nodes('正文\n\n---\na: b\n---', 'FrontMatter')).toEqual([]) + expect(nodes('正文\n\n---\n', 'HorizontalRule')).toEqual(['---']) + // 闭合后的 --- 照常解析为分隔线 + expect(nodes('---\na: 1\n---\n\n---\n', 'HorizontalRule')).toEqual(['---']) + }) +}) diff --git a/web/src/markdown/extensions.ts b/web/src/markdown/extensions.ts new file mode 100644 index 0000000..f663c51 --- /dev/null +++ b/web/src/markdown/extensions.ts @@ -0,0 +1,198 @@ +// Typora 扩展语法：==高亮==、$行内公式$、$$公式块$$、脚注、[TOC]、YAML front matter。 +// 上标 ^x^、下标 ~x~、:emoji: 由 @lezer/markdown 自带的扩展解析 +import { tags } from '@lezer/highlight' +import type { BlockContext, LeafBlockParser, Line, MarkdownConfig } from '@lezer/markdown' + +const PUNCTUATION = /[!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~\xA1‐-‧]/ + +const highlightDelim = { resolve: 'Highlight', mark: 'HighlightMark' } + +/** ==高亮==，定界规则与 GFM 删除线相同 */ +const Highlight: MarkdownConfig = { + defineNodes: [ + { name: 'Highlight', style: { 'Highlight/...': tags.special(tags.content) } }, + { name: 'HighlightMark', style: tags.processingInstruction }, + ], + parseInline: [ + { + name: 'Highlight', + parse(cx, next, pos) { + if (next !== 61 /* = */ || cx.char(pos + 1) !== 61 || cx.char(pos + 2) === 61) return -1 + const before = cx.slice(pos - 1, pos) + const after = cx.slice(pos + 2, pos + 3) + const sBefore = /\s|^$/.test(before) + const sAfter = /\s|^$/.test(after) + const pBefore = PUNCTUATION.test(before) + const pAfter = PUNCTUATION.test(after) + return cx.addDelimiter( + highlightDelim, + pos, + pos + 2, + !sAfter && (!pAfter || sBefore || pBefore), + !sBefore && (!pBefore || sAfter || pAfter), + ) + }, + after: 'Emphasis', + }, + ], +} + +/** + * $行内公式$（Pandoc 规则）：开头 $ 后不能是空白，结尾 $ 前不能是空白、后面不能紧跟数字， + * 因此"$5 和 $10"这类金额不会被当成公式；\$ 为转义 + */ +const InlineMath: MarkdownConfig = { + defineNodes: [ + { name: 'InlineMath', style: tags.monospace }, + { name: 'InlineMathMark', style: tags.processingInstruction }, + ], + parseInline: [ + { + name: 'InlineMath', + parse(cx, next, pos) { + if (next !== 36 /* $ */ || cx.char(pos + 1) === 36 || /\s/.test(cx.slice(pos + 1, pos + 2))) return -1 + for (let i = pos + 1; i < cx.end; i++) { + const ch = cx.char(i) + if (ch === 92 /* \ */) i++ + else if (ch === 36 && i > pos + 1 && !/\s/.test(cx.slice(i - 1, i)) && !/\d/.test(cx.slice(i + 1, i + 2))) { + return cx.addElement(cx.elt('InlineMath', pos, i + 1, [cx.elt('InlineMathMark', pos, pos + 1), cx.elt('InlineMathMark', i, i + 1)])) + } + } + return -1 + }, + before: 'Emphasis', + }, + ], +} + +const isMathFence = (line: Line) => /^\$\$\s*$/.test(line.text.slice(line.pos)) + +/** + * 独占一行的 $$ 之间为公式块，未闭合时延续到文档末尾。只在顶层识别：解析器的公开接口无法判断 + * 下一行是否仍属于引用、列表等容器，与表格一样，容器内的公式块以源码显示 + */ +const BlockMath: MarkdownConfig = { + defineNodes: [ + { name: 'BlockMath', block: true, style: tags.monospace }, + { name: 'BlockMathMark', style: tags.processingInstruction }, + ], + parseBlock: [ + { + name: 'BlockMath', + parse(cx, line) { + if (cx.parentType().name !== 'Document' || !isMathFence(line)) return false + const from = cx.lineStart + line.pos + const marks = [cx.elt('BlockMathMark', from, from + 2)] + while (cx.nextLine()) { + if (isMathFence(line)) { + marks.push(cx.elt('BlockMathMark', cx.lineStart + line.pos, cx.lineStart + line.pos + 2)) + cx.nextLine() + break + } + } + cx.addElement(cx.elt('BlockMath', from, cx.prevLineEnd(), marks)) + return true + }, + endLeaf: (cx, line) => cx.parentType().name === 'Document' && isMathFence(line), + before: 'FencedCode', + }, + ], +} + +const FOOTNOTE_LABEL = /^\[\^([^\]\s]+)\]/ + +/** 脚注引用 [^label] 与脚注定义 [^label]: 内容（定义可跨行，直到空行） */ +const Footnote: MarkdownConfig = { + defineNodes: [ + { name: 'FootnoteReference', style: tags.labelName }, + { name: 'FootnoteDefinition', block: true }, + { name: 'FootnoteLabel', style: tags.labelName }, + ], + parseInline: [ + { + name: 'FootnoteReference', + parse(cx, next, pos) { + if (next !== 91 /* [ */ || cx.char(pos + 1) !== 94 /* ^ */) return -1 + const m = FOOTNOTE_LABEL.exec(cx.slice(pos, cx.end)) + return m ? cx.addElement(cx.elt('FootnoteReference', pos, pos + m[0].length)) : -1 + }, + before: 'Link', + }, + ], + parseBlock: [ + { + name: 'FootnoteDefinition', + leaf(_cx, leaf) { + const m = /^\[\^[^\]\s]+\]:/.exec(leaf.content) + if (!m) return null + const self: LeafBlockParser = { + // "[^1]: 文字"同时也是合法的链接引用定义；本解析器排在前面，续行时去掉其他候选，整块归为脚注定义。 + // 须原地修改：调用方正在遍历这个数组 + nextLine(_cx, _line, leaf) { + leaf.parsers.splice(0, leaf.parsers.length, self) + return false + }, + finish(cx, leaf) { + const label = cx.elt('FootnoteLabel', leaf.start, leaf.start + m[0].length) + const body = cx.parser.parseInline(leaf.content.slice(m[0].length), leaf.start + m[0].length) + cx.addLeafElement(leaf, cx.elt('FootnoteDefinition', leaf.start, leaf.start + leaf.content.length, [label, ...body])) + return true + }, + } + return self + }, + before: 'LinkReference', + }, + ], +} + +/** 独占一行的 [TOC]（不区分大小写）显示为目录 */ +const TableOfContents: MarkdownConfig = { + defineNodes: [{ name: 'TableOfContents', block: true, style: tags.meta }], + parseBlock: [ + { + name: 'TableOfContents', + parse(cx, line) { + if (!/^\[toc\]\s*$/i.test(line.text.slice(line.pos))) return false + cx.addElement(cx.elt('TableOfContents', cx.lineStart + line.pos, cx.lineStart + line.text.length)) + cx.nextLine() + return true + }, + before: 'LinkReference', + }, + ], +} + +const isFrontMatterEnd = (line: Line) => /^(---|\.\.\.)\s*$/.test(line.text) + +/** + * 文档首行为 --- 时，到下一个 --- 或 ... 为 YAML front matter。解析器无法向后预读整个文档， + * 未闭合时延续到文末——与 Typora（首行输入 --- 即创建 front matter）及 GitHub、Hugo 的识别方式一致 + */ +const FrontMatter: MarkdownConfig = { + defineNodes: [ + { name: 'FrontMatter', block: true, style: tags.monospace }, + { name: 'FrontMatterMark', style: tags.processingInstruction }, + ], + parseBlock: [ + { + name: 'FrontMatter', + parse(cx: BlockContext, line: Line) { + if (cx.lineStart !== 0 || cx.parentType().name !== 'Document' || !/^---\s*$/.test(line.text)) return false + const marks = [cx.elt('FrontMatterMark', 0, 3)] + while (cx.nextLine()) { + if (isFrontMatterEnd(line)) { + marks.push(cx.elt('FrontMatterMark', cx.lineStart, cx.lineStart + 3)) + cx.nextLine() + break + } + } + cx.addElement(cx.elt('FrontMatter', 0, cx.prevLineEnd(), marks)) + return true + }, + before: 'HorizontalRule', + }, + ], +} + +export const typoraExtensions: MarkdownConfig[] = [FrontMatter, Highlight, InlineMath, BlockMath, Footnote, TableOfContents] diff --git a/web/src/markdown/html.test.ts b/web/src/markdown/html.test.ts index cd73986..b37100c 100644 --- a/web/src/markdown/html.test.ts +++ b/web/src/markdown/html.test.ts @@ -56,6 +56,21 @@ describe('安全模式', () => { }) }) +describe('Typora 扩展', () => { + it('高亮、上下标、脚注引用', () => { + expect(renderMarkdown('==a== x^2^ H~2~O[^1]')).toBe('

a x2 H2O1

\n') + }) + it('公式与 emoji 输出待填充的占位元素，内容被转义', () => { + expect(renderMarkdown('$aa<b :smile:

\n') + expect(renderMarkdown('$$\n">\n$$')).toBe( + '
"><img src=x onerror=alert(1)>
\n', + ) + }) + it('脚注定义、front matter 与 [TOC]', () => { + expect(renderMarkdown('---\ntitle: x\n---\n[TOC]\n\n[^1]: 说明 **重点**')).toBe('
1 说明 重点
\n') + }) +}) + describe('CommonMark spec', () => { for (const e of examples) { const test = PARSER_DEVIATIONS.has(e.number) ? it.fails : it diff --git a/web/src/markdown/html.ts b/web/src/markdown/html.ts index 7e6fd23..cb543f3 100644 --- a/web/src/markdown/html.ts +++ b/web/src/markdown/html.ts @@ -1,8 +1,9 @@ import type { SyntaxNode } from '@lezer/common' import { Emoji, GFM, parser as commonmarkParser, Subscript, Superscript, type MarkdownParser } from '@lezer/markdown' +import { typoraExtensions } from './extensions' -// 与编辑器（lang-markdown 的 markdownLanguage）一致的语法集 -export const markdownParser = commonmarkParser.configure([GFM, Subscript, Superscript, Emoji]) +// 与编辑器一致的语法集（lang-markdown 的 markdownLanguage 加 Typora 扩展） +export const markdownParser = commonmarkParser.configure([GFM, Subscript, Superscript, Emoji, ...typoraExtensions]) export { commonmarkParser } @@ -263,6 +264,19 @@ export function renderMarkdown(src: string, { parser = markdownParser, unsafe = return `${innerOf(node, 'SuperscriptMark')}` case 'Subscript': return `${innerOf(node, 'SubscriptMark')}` + case 'Highlight': + return `${innerOf(node, 'HighlightMark')}` + // 公式与 emoji 输出占位元素，由 render.ts 的 hydrate 按需加载依赖后填充 + case 'InlineMath': { + const tex = text(node.from + 1, node.to - 1) + return `${escapeHtml(tex)}` + } + case 'Emoji': { + const raw = text(node.from, node.to) + return `${escapeHtml(raw)}` + } + case 'FootnoteReference': + return `${escapeHtml(text(node.from + 2, node.to - 1))}` case 'InlineCode': { const marks = node.getChildren('CodeMark') let code = text(marks[0].to, marks[marks.length - 1].from).replace(/\n/g, ' ') @@ -416,6 +430,18 @@ export function renderMarkdown(src: string, { parser = markdownParser, unsafe = return rawHtml(contentLines(node, false, false).map((l) => l.rest).join('\n')) + '\n' case 'Table': return table(node) + case 'BlockMath': { + const marks = node.getChildren('BlockMathMark') + const from = Math.min(lineEnd(node.from) + 1, node.to) + const to = marks.length > 1 ? Math.max(from, lineStart(marks[marks.length - 1].from) - 1) : node.to + const tex = text(from, to) + return `
${escapeHtml(tex)}
\n` + } + case 'FootnoteDefinition': { + const label = node.getChild('FootnoteLabel')! + return `
${escapeHtml(text(label.from + 2, label.to - 2))} ${inline(node, label.to, node.to).trim()}
\n` + } + // front matter 是元数据，不输出；[TOC] 在只读分享页面（M4）中生成 default: return '' } diff --git a/web/src/markdown/render.ts b/web/src/markdown/render.ts new file mode 100644 index 0000000..18a064c --- /dev/null +++ b/web/src/markdown/render.ts @@ -0,0 +1,64 @@ +// 数学公式、Mermaid 图表、emoji 的渲染。依赖体积较大，首次用到时才加载（各自打成独立的包） +import type { MermaidConfig } from 'mermaid' + +let katexLoad: Promise | undefined +function loadKatex() { + katexLoad ??= Promise.all([import('katex'), import('katex/dist/katex.min.css')]).then(([m]) => m.default) + return katexLoad +} + +/** 渲染公式；语法错误以红色显示错误信息而不是抛出 */ +export async function renderMath(el: HTMLElement, tex: string, displayMode: boolean): Promise { + const katex = await loadKatex() + katex.render(tex, el, { displayMode, throwOnError: false, output: 'htmlAndMathml' }) +} + +let mermaidLoad: Promise | undefined +let mermaidSeq = 0 +function loadMermaid() { + mermaidLoad ??= import('mermaid').then(({ default: mermaid }) => { + const dark = matchMedia('(prefers-color-scheme: dark)').matches + // strict：图表中的 HTML 会被清理，点击事件等交互被禁用 + const config: MermaidConfig = { startOnLoad: false, securityLevel: 'strict', theme: dark ? 'dark' : 'default' } + mermaid.initialize(config) + return mermaid + }) + return mermaidLoad +} + +/** 渲染 Mermaid 图表，返回 SVG 标记；语法错误时抛出带说明的 Error */ +export async function renderMermaid(code: string): Promise { + const mermaid = await loadMermaid() + const id = `rm-mermaid-${++mermaidSeq}` + try { + return (await mermaid.render(id, code)).svg + } catch (err) { + // 出错时 mermaid 会把临时节点留在 body 中 + document.getElementById('d' + id)?.remove() + throw err instanceof Error ? err : new Error(String(err)) + } +} + +let emojiLoad: Promise> | undefined + +/** 按 GitHub/Typora 的名称查找 emoji，如 smile → 😄；未知名称返回 undefined */ +export async function emojiFor(name: string): Promise { + emojiLoad ??= import('gemoji').then(({ gemoji }) => { + const map = new Map() + for (const g of gemoji) for (const n of g.names) map.set(n, g.emoji) + return map + }) + return (await emojiLoad).get(name) +} + +/** 为渲染器输出的占位元素（表格单元格等处）填充公式与 emoji */ +export function hydrate(root: HTMLElement) { + for (const el of root.querySelectorAll('[data-math]')) { + void renderMath(el, el.dataset.math!, el.tagName === 'DIV') + } + for (const el of root.querySelectorAll('[data-emoji]')) { + void emojiFor(el.dataset.emoji!).then((e) => { + if (e) el.textContent = e + }) + } +} diff --git a/web/src/themes/base.css b/web/src/themes/base.css index b0638bb..9fde8e7 100644 --- a/web/src/themes/base.css +++ b/web/src/themes/base.css @@ -24,6 +24,7 @@ --rm-code-bg: #292d3e; --rm-code-text: #e1e4e8; --rm-code-font-size: 14px; + --rm-highlight-bg: rgba(255, 213, 0, 0.35); } @media (prefers-color-scheme: dark) { @@ -37,6 +38,7 @@ --rm-inline-code-bg: #2f2f2f; --rm-inline-code-text: #aac8e4; --rm-code-bg: #242424; + --rm-highlight-bg: rgba(255, 213, 0, 0.28); } } @@ -231,3 +233,45 @@ body { .cm-rm-code-copy { width: 36px; height: 36px; } .cm-line.cm-rm-code { padding: 0 12px; } } + +/* ---- Typora 扩展语法 ---- */ +.cm-rm-highlight, +.cm-rm-table-widget mark { background: var(--rm-highlight-bg); color: inherit; border-radius: 2px; padding: 0 1px; } +.cm-rm-sup { vertical-align: super; font-size: 0.75em; line-height: 0; } +.cm-rm-sub { vertical-align: sub; font-size: 0.75em; line-height: 0; } +.cm-rm-placeholder { color: var(--rm-text-muted); font-style: italic; } + +.cm-rm-math { cursor: pointer; } +.cm-rm-math-block { display: block; padding: 8px 0; text-align: center; overflow-x: auto; overflow-y: hidden; cursor: pointer; } +.cm-rm-math-block .katex-display { margin: 0; } +.cm-line.cm-rm-math-source { font-family: var(--rm-font-mono); font-size: 0.9em; color: var(--rm-text-muted); } +/* 编辑时显示在源码下方的预览 */ +.cm-rm-preview { margin: 4px 0 8px; padding: 8px 12px; border: 1px dashed var(--rm-divider); border-radius: 6px; cursor: default; } + +.cm-rm-mermaid { display: block; padding: 8px 0; text-align: center; overflow-x: auto; cursor: pointer; color: var(--rm-text-muted); } +.cm-rm-mermaid svg { max-width: 100%; height: auto; } +.cm-rm-render-error { + margin: 0; + padding: 8px 12px; + border-radius: 6px; + background: rgba(229, 72, 77, 0.08); + color: #e5484d; + font-family: var(--rm-font-mono); + font-size: 12px; + text-align: left; + white-space: pre-wrap; +} + +.cm-rm-emoji { cursor: text; } + +.cm-rm-footnote-ref { color: var(--rm-accent-strong); font-size: 0.75em; cursor: pointer; padding: 0 1px; } +.cm-line.cm-rm-footnote { font-size: 0.9em; color: var(--rm-text-muted); } +.cm-rm-footnote-label { color: var(--rm-accent-strong); } + +.cm-rm-toc { display: block; padding: 8px 12px; border-left: 3px solid var(--rm-divider); cursor: pointer; } +.cm-rm-toc-item { display: block; color: var(--rm-accent-strong); line-height: 1.8; cursor: pointer; text-decoration: none; } +.cm-rm-toc-item:hover { text-decoration: underline; } + +.cm-line.cm-rm-frontmatter { font-family: var(--rm-font-mono); font-size: 0.85em; color: var(--rm-text-muted); background: var(--rm-inline-code-bg); padding: 0 12px; } +.cm-line.cm-rm-frontmatter-begin { border-radius: 6px 6px 0 0; padding-top: 4px; } +.cm-line.cm-rm-frontmatter-end { border-radius: 0 0 6px 6px; padding-bottom: 4px; }