After reviewing my own code. Thanks for digging into the code! You're reviewing the regex fallback patterns that only trigger when AST parsing fails. The primary detection uses Tree-sitter for structural analysis and taint flow tracking.

That TOCTOU pattern IS terrible - it's meant as a last-resort 'something might be wrong here' flag when we can't parse the AST. The real detection happens in theauditor/taint_analyzer/ which tracks actual data flow from filesystem checks to file operations.

But you're right - even fallback patterns shouldn't be this noisy. I'll tighten it to only flag actual filesystem operations: - os.path.exists → open() - fs.exists → fs.writeFile() - File.exists() → new FileWriter()

  If you actually run the tool with aud full, it uses the proper AST analysis first. These regex patterns are
  the third fallback when Tree-sitter isn't available.

  Thanks for the specific feedback - this is exactly why I open-sourced it!