brace-expansion expands brace expressions like "{a,b,c}" into a list of strings. It's a core utility for many command-line tools and build systems that need to generate combinations of filenames or other text patterns. This package supports nested braces and complex patterns. It's widely used indirectly through dependencies and is essential for enabling flexible and concise pattern matching in various applications. Versioning includes bug fixes and performance improvements, maintaining stability for dependent projects.