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About This Tool

Purpose & User Intent: Assumes a Mac-focused code/text editor used by developers and writers on macOS. Exact problem solved: a local, offline editor that handles code and rich text, keeps files on the user’s disk, and provides fast editing, syntax highlighting, and basic project management. Primary users are software developers, technical writers, and researchers who need fast, private editing without cloud dependencies. When to use: during local development, note-taking, or drafting documents in environments with limited or no internet. Core Logic & Features: The tool supports multi-field configuration (language, theme, font size, line endings, encoding) and local file IO with safe autosave. Required features include syntax highlighting for common languages, robust search/replace, newline handling, and basic project view. Optional/advanced features include plugin hooks, custom themes, lightweight Lint-like hints, offline file diff, and export formats. Inputs & Outputs: Inputs include language (string), file_paths (array), encoding (string), theme (string), font_size (number), autosave (boolean), and export_format (string); sample: language: 'typescript', file_paths: ['/Users/alice/proj/main.ts'], encoding: 'UTF-8', font_size: 14. Outputs are edited_text, diagnostics, and per-file metadata; formatting rules follow OS line endings and UTF-8 encoding. Algorithms & Calculations: Core logic uses lexical tokenization for syntax highlighting, simple diff/overlay for autosave, and file IO routines with error handling. It does not compile or run code; it only edits and tokenizes. Error & Edge Cases: Handles missing files, read-only files, unsupported languages, invalid encoding, and large files by streaming; reports safely without crashing. Industry/Region & Localization: Defaults to macOS conventions, UTF-8, supports internationalized filenames; English as default; locale-aware date formatting is out of scope. Assumptions & Exclusions: Assumes an offline, single-user environment; not a compiler, interpreter, or cloud collaboration tool; no built-in package manager; not a bespoke IDE; excludes UI or marketing content.

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