Lumacs

Lumacs

A modern text editor in C++, inspired by Emacs but with better scripting via Lua.

Features (Planned)

• Modern C++20 codebase with RAII principles
• Terminal UI using FTXUI
• Lua scripting with sol2
• Window splits and buffer management
• Extensible architecture

Tech Stack

• Core: C++20 with modern idioms
• TUI: FTXUI for terminal rendering
• Scripting: Lua 5.4 + sol2 bindings
• Build: CMake 3.20+
• Text Storage: std::vector<std::string> (MVP), rope structure planned

Building

Standard Build

mkdir build && cd build
cmake ..
cmake --build .
./lumacs [file]

With Nix

nix-shell
mkdir build && cd build
cmake -G Ninja ..
ninja
./lumacs [file]

Build Options

• Debug build: cmake -DCMAKE_BUILD_TYPE=Debug ..
• Release build: cmake -DCMAKE_BUILD_TYPE=Release .. (default)

Project Structure

lumacs/
├── include/lumacs/    # Public headers
│   └── buffer.hpp     # Text buffer interface
├── src/               # Implementation
│   ├── main.cpp       # Entry point
│   └── buffer.cpp     # Buffer implementation
├── tests/             # Unit tests
├── CMakeLists.txt     # Build configuration
└── shell.nix          # Nix development environment

Current Status

MVP Phase: Basic infrastructure in place

• Project structure and build system
• Buffer implementation with basic operations
• Minimal FTXUI integration
• Lua runtime initialized
• Keyboard input handling
• Window splits (M-2 horizontal, M-3 vertical, M-0 close, C-w next)
• Lua configuration loading
• Basic editing commands (Search/Replace API added)
• Unit tests
• Command Buffer (Minibuffer)

Development

The project uses modern C++ practices:

• RAII for resource management
• Smart pointers for ownership
• std::optional for fallible operations
• Range-based operations
• C++20 features (spaceship operator, etc.)

License

TBD