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fix(tui): preserve dunder identifiers in markdown

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helix4u 2026-05-19 00:05:59 -07:00 • committed by Teknium
parent 8c3b065124
commit 6cac56f314
2 changed files with 41 additions and 6 deletions
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33
ui-tui/src/__tests__/markdown.test.ts
View file

@ -46,7 +46,7 @@ const renderPlain = (node: React.ReactNode) => {
describe('INLINE_RE emphasis', () => {
it('matches word-boundary italic/bold', () => {
expect(matches('say _hi_ there')).toEqual(['_hi_'])
expect(matches('very __bold__ move')).toEqual(['__bold__'])
expect(matches('very __bold move__ today')).toEqual(['__bold move__'])
expect(matches('(_paren_) and [_bracket_]')).toEqual(['_paren_', '_bracket_'])
})
@ -58,6 +58,12 @@ describe('INLINE_RE emphasis', () => {
expect(matches('foo__bar__baz')).toEqual([])
})
it('keeps Python dunder identifiers literal', () => {
expect(matches('if __name__ == "__main__":')).toEqual([])
expect(matches('def __init__(self):')).toEqual([])
expect(matches('print(__file__)')).toEqual([])
})
it('still matches asterisk emphasis intraword', () => {
expect(matches('a*b*c')).toEqual(['*b*'])
expect(matches('a**bold**c')).toEqual(['**bold**'])
@ -93,7 +99,12 @@ describe('stripInlineMarkup', () => {
it('strips word-boundary emphasis only', () => {
expect(stripInlineMarkup('say _hi_ there')).toBe('say hi there')
expect(stripInlineMarkup('browser_screenshot_ecc.png')).toBe('browser_screenshot_ecc.png')
expect(stripInlineMarkup('__bold__ and foo__bar__')).toBe('bold and foo__bar__')
expect(stripInlineMarkup('__bold move__ and foo__bar__')).toBe('bold move and foo__bar__')
})
it('preserves Python dunder identifiers', () => {
expect(stripInlineMarkup('if __name__ == "__main__":')).toBe('if __name__ == "__main__":')
expect(stripInlineMarkup('class X: def __init__(self): pass')).toBe('class X: def __init__(self): pass')
})
it('leaves ~!/~? kaomoji alone and still handles real subscript', () => {
@ -216,6 +227,24 @@ describe('Md wrapping', () => {
expect(lines.some(line => line.startsWith(' hi ok'))).toBe(true)
})
it('renders Python dunder identifiers literally outside code fences', () => {
const lines = renderPlain(
React.createElement(
Box,
{ width: 80 },
React.createElement(Md, {
t: DEFAULT_THEME,
text: 'if __name__ == "__main__":\n obj.__init__()'
})
)
)
const rendered = lines.join('\n')
expect(rendered).toContain('if __name__ == "__main__":')
expect(rendered).toContain('obj.__init__()')
})
})
describe('Md link labels', () => {

14
ui-tui/src/components/markdown.tsx
View file

@ -70,6 +70,12 @@ const NUMBERED_RE = /^(\s*)(\d+)[.)]\s+(.*)$/
const QUOTE_RE = /^\s*(?:>\s*)+/
const TABLE_DIVIDER_CELL_RE = /^:?-{3,}:?$/
const MD_URL_RE = '((?:[^\\s()]|\\([^\\s()]*\\))+?)'
const MD_IDENTIFIER_RE = '[A-Za-z_][A-Za-z0-9_]*'
const MD_DUNDER_IDENTIFIER_RE = `(?:${MD_IDENTIFIER_RE}__(?!\\w))`
const MD_UNDERSCORE_BOLD_RE = `(?<!\\w)__(?!${MD_DUNDER_IDENTIFIER_RE})(.+?)__(?!\\w)`
const MD_UNDERSCORE_ITALIC_RE = `(?<![\\w_])_(?!_)(.+?)(?<!_)_(?![\\w_])`
const STRIP_UNDERSCORE_BOLD_RE = new RegExp(MD_UNDERSCORE_BOLD_RE, 'g')
const STRIP_UNDERSCORE_ITALIC_RE = new RegExp(MD_UNDERSCORE_ITALIC_RE, 'g')
// Display math openers: `$$ ... $$` (TeX) and `\[ ... \]` (LaTeX). The
// opener is matched only when `$$` / `\[` appears at the very start of the
@ -107,9 +113,9 @@ export const INLINE_RE = new RegExp(
`~~(.+?)~~`, // 6 strike
`\`([^\\\`]+)\``, // 7 code
`\\*\\*(.+?)\\*\\*`, // 8 bold *
`(?<!\\w)__(.+?)__(?!\\w)`, // 9 bold _
MD_UNDERSCORE_BOLD_RE, // 9 bold _
`\\*(.+?)\\*`, // 10 italic *
`(?<!\\w)_(.+?)_(?!\\w)`, // 11 italic _
MD_UNDERSCORE_ITALIC_RE, // 11 italic _
`==(.+?)==`, // 12 highlight
`\\[\\^([^\\]]+)\\]`, // 13 footnote ref
`\\^([^^\\s][^^]*?)\\^`, // 14 superscript
@ -190,9 +196,9 @@ export const stripInlineMarkup = (v: string) =>
.replace(/~~(.+?)~~/g, '$1')
.replace(/`([^`]+)`/g, '$1')
.replace(/\*\*(.+?)\*\*/g, '$1')
.replace(/(?<!\w)__(.+?)__(?!\w)/g, '$1')
.replace(STRIP_UNDERSCORE_BOLD_RE, '$1')
.replace(/\*(.+?)\*/g, '$1')
.replace(/(?<!\w)_(.+?)_(?!\w)/g, '$1')
.replace(STRIP_UNDERSCORE_ITALIC_RE, '$1')
.replace(/==(.+?)==/g, '$1')
.replace(/\[\^([^\]]+)\]/g, '[$1]')
.replace(/\^([^^\s][^^]*?)\^/g, '^$1')