The component takes a GitHub blob URL with a line range (e.g. .../blob/<sha>/<path>#L9-L18) and converts it into a raw.githubusercontent.com URL to fetch the file contents.

Explains the URL-rewriting mechanism: GitHub blob URLs are transformed into raw content URLs for fetching. ✦ AI generated

Simon Willison · Simon Willison's Weblog · 2026-07-07 · original ↗

It takes URLs like that, converts them to https://raw.githubusercontent.com/simonw/sqlite-ast/437c759129154f05296324a7f82aa1246340dd14/sqlite_ast/parser.py, then uses fetch() to fetch them and displays the specified range of lines

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