Hacktoberfest 2026: le issue che i maintainer hanno segnato per ottobre, aperte e adatte ai principianti. Sfoglia le issue Hacktoberfest

Strong ending in nested emphasis (`**bold *italic***`) closes early and leaves a literal `*`

Aperta
  • Qualcosa non va?
#32 0 commenti 0 reazioni 0 assegnatari Vedi su GitHub

Nessuno ha ancora preso questa issue.

Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
48/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
markdown, typescript
Ambito
backend

Direzione di ricerca

Start at the Markdown emphasis parsing entry point and its tests; the issue does not name specific files, so first locate how delimiter runs are matched. Reproduce the nested and flanking cases from the report and compare output with micromark 4.0.2. Done means all listed inputs produce the expected CommonMark HTML, including the already working reverse nesting case.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

Summary

When a strong span ends with a nested emphasis span, so that the closing run is ***, @tanstack/markdown closes the <strong> early and leaves a literal * behind. The reverse case (*outer **inner***) already works.

This is common in real content. MDXEditor's Markdown serializer, for example, writes bold text ending in an italic title exactly as **25 years of *Title***, so content produced by that editor renders with stray asterisks.

Environment
  • @tanstack/markdown 1.0.0, renderHtml from @tanstack/markdown/html. The React adapter shows the same output.
  • Node 24
  • Reference: micromark 4.0.2 (CommonMark)
Reproduction
import { renderHtml } from '@tanstack/markdown/html'

renderHtml('**bold *italic***')
renderHtml('**25 years of *Title***, the debut album.')
renderHtml('***Iceman*, *Maid of Honour* and *Habibti***')
Input @tanstack/markdown 1.0.0 micromark 4.0.2 (expected)
**bold *italic*** <p><strong>bold *italic</strong>*</p> <p><strong>bold <em>italic</em></strong></p>
**25 years of *Title***, the debut album. <p><strong>25 years of *Title</strong>*, the debut album.</p> <p><strong>25 years of <em>Title</em></strong>, the debut album.</p>
***Iceman*, *Maid of Honour* and *Habibti*** <p><em><strong>Iceman<em>, </em>Maid of Honour<em> and </em>Habibti</strong></em></p> <p><strong><em>Iceman</em>, <em>Maid of Honour</em> and <em>Habibti</em></strong></p>
*outer **inner*** (works) <p><em>outer <strong>inner</strong></em></p> same
Related flanking cases (in addition to #28)

#28 covers a * with whitespace on both sides. These two variants also open or close where CommonMark does not:

Input @tanstack/markdown 1.0.0 micromark 4.0.2 (expected)
**VIP pass **: entry included <p><strong>VIP pass </strong>: entry included</p> <p>**VIP pass **: entry included</p>
Seats CSI5* and CSI1*, both sold <p>Seats CSI5<em> and CSI1</em>, both sold</p> <p>Seats CSI5* and CSI1*, both sold</p>
  • First row: the closing ** is preceded by whitespace, so it is not right-flanking.
  • Second row: the first * is followed by whitespace, so it is not left-flanking.
Context

We compared @tanstack/markdown against a corpus of about 4,000 real Markdown documents. These emphasis cases account for most of the visible differences. They are the only thing blocking us from adopting it.

Lingua principale
TypeScript
Stelle
432
Fork
11
Merge medio
57m
PR unite (30g)
4

Preparare l'ambiente

Come iniziare

  1. Leggi tutta la issue e poi la guida ai contributi del progetto.
  2. Commenta sulla issue per dire che te ne occupi tu — evita che due persone facciano lo stesso lavoro.
  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

Altre issue di TanStack/markdown

Tutte le issue di TanStack/markdown

Issue simili

Altre issue su TypeScript

Ricevi le nuove issue nella tua casella

Un breve riepilogo di issue GitHub adatte ai principianti.