Issue Description

The regex patterns for HTML comments and markdown formatting in Validate-MarkdownFrontmatter.ps1 have limitations and could be enhanced.

File: scripts/linting/Validate-MarkdownFrontmatter.ps1
Line: 179

Problem

Current patterns:

$htmlCommentPattern = '<!--.*?-->'
$markdownFormatPattern = '(\*\*|__)(.*?)\1|(\*|_)(.*?)\3'

Limitations:

• HTML comment pattern doesn't handle multiline comments properly
• Markdown format pattern has backreference issues and doesn't cover all markdown syntax

Suggested Enhancement

$htmlCommentPattern = '(?s)<!--.*?-->'
$markdownFormatPattern = '(\*\*|__)([^*_]+?)\1|(\*|_)([^*_]+?)\3|\([^\`]+?\)'

• (?s) enables multiline matching for HTML comments
• Non-greedy character classes prevent over-matching
• Added inline code pattern

Impact

• Severity: Low
• Enhancement to improve validation accuracy
• Not blocking current functionality

Source

Identified in PR #26 code review.