Problem

Code blocks containing square brackets render incorrectly.

Example

TypeScript interface with index signature syntax:

interface MyType {
  [key: string]: any;
}

The [key: string] syntax displays improperly in MacDown.

Impact

• Affects TypeScript, JavaScript, and other programming languages
• Index signatures are common in TypeScript code
• Makes code documentation difficult

Source

Based on issue #1332 from MacDownApp/macdown
MacDownApp/macdown#1332

Priority

HIGH - Affects code rendering for common programming patterns