.txt.txt — Fast

This document outlines a functional specification for implementing a robust double-extension .txt.txt handler, designed to safely manage scenarios where text files are inadvertently saved with dual extensions, preventing common data loss or security issues. Feature Specification: .txt.txt Extension Handler Draft Version: 1.0 1. Purpose

is this for (Windows, macOS, or a custom app)? Knowing this will help me refine the code or steps!

The system MUST identify files ending in .txt.txt as plain text files, similar to .txt files. .txt.txt

The purpose of this feature is to identify, validate, and correctly process files named with the suffix .txt.txt (e.g., report.txt.txt ). It ensures that applications treating these as plain text still parse them correctly, while security systems recognize them as potentially deceptive. 2. Functional Requirements

The "Save As" dialogue MUST prompt the user to normalize the file to a single .txt extension. Knowing this will help me refine the code or steps

if filename.endswith(".txt.txt"): safe_filename = filename.replace(".txt.txt", ".txt") # Log incident for user warn_user("Double extension detected. Renaming for safety.") Use code with caution. Copied to clipboard

The system MUST flag .txt.txt files in email attachments or download folders for potential spoofing. 3. Implementation Logic Detection: Scan for file extension regex: ^.*\.txt\.txt$ Handling Rule: It ensures that applications treating these as plain

Ensure File Open Dialogues include *.txt.txt in the "Plain Text Files" filter. 4. User Experience