cliapp

cliapp is an R package for creating command-line applications with rich text formatting, including colors, headings, lists, alerts, and progress bars. It uses CSS-based theming to style terminal output.

This package has been superseded by the cli package, which now provides the same functionality with additional features. cliapp supports glue-style string interpolation, inline markup for emphasis and code formatting, multiple heading levels, various alert types (success, warning, danger, info), and nested lists. It integrates with the progress package for progress bar functionality.