Markdown Code Blocks: Syntax Highlighting and Diffing
Use fenced code blocks in Markdown with language identifiers for syntax highlighting. Add line numbers, highlight specific lines, and show diffs.
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Tags: markdown, code, documentation
Markdown Code Blocks: Syntax Highlighting, Line Numbers, and Diffing Code blocks are the most developer-critical part of Markdown. A documentation site with unstyled code blocks looks unfinished; one with syntax highlighting that works correctly for 20 languages looks professional. This guide covers how code fences work in Markdown, how syntax highlighting libraries differ, how to add line numbers, and how to use diff highlighting to show code changes. --- Code Fence Syntax Fenced code blocks use triple backticks or triple tildes. The opening fence can include a language identifier: javascript const multiply = (a, b) => a b; console.log(multiply(6, 7)); // 42 marked<code> Use inline code for: Variable names and function names in prose Short expressions, keywords, file names Command-line…
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