[Bug] language:markdown italic error

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14,836 stars (14,836 stars)

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Avg merge 17h 9m (Avg merge 17h 9m)14 merged PRs in 30d (14 merged PRs in 30d)

Description

Language:markdown

_italic_
$a_{1}$:expect normal but italic$b_{1}$
$a_{1}$:normal$b$
*italic*

Contributor guide

Research direction

The issue is that underscores inside math formulas ($...$) are incorrectly rendered as italic in markdown. The fix likely involves modifying the markdown language grammar (e.g., markdown.tmLanguage.json or monarch tokenizer rules) to disable italic inside math environments. Look at the existing grammar files in src/language/markdown/, particularly the tokenizer rules for ` ` and `*`. Investigate how math formulas are tokenized and ensure that underscores inside $...$ are not treated as emphasis markers. Test with the provided example after making changes.

Tech stack

typescript

Domain

frontend

Issue type

Bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

Half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Mostly clear

Prerequisites

Knowledge of TextMate grammarsFamiliarity with monaco editor's tokenizer

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

50