tre ☆

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Description:
Lightweight, POSIX-compliant regular expression (regex) library

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: regex library posix embedded text-processing c

Install: brew install tre

About:
Tre is a lightweight, POSIX-compliant regular expression library designed for embedded systems and applications requiring minimal footprint. It provides robust pattern matching capabilities while maintaining compatibility with standard regex syntax. Its main value proposition is delivering full-featured regex support in constrained environments where larger libraries like PCRE would be impractical.

Key Features:

POSIX-compliant regular expression engine
Minimal memory footprint for embedded use
Wide character (Unicode) support
Fuzzy string matching capabilities
Portable across multiple platforms

Use Cases:

Embedded systems development requiring regex functionality
Building lightweight text processing tools
Applications needing POSIX-standard pattern matching
Projects with strict memory constraints

Alternatives:

PCRE2 – More feature-rich but significantly larger memory footprint
RE2 – Google's fast engine but focuses on safety guarantees over POSIX compliance
GNU regex – Standard GNU library but less portable and heavier

Version History

Detected	Version	Rev	Change	Commit
Sep 11, 2025 1:59am		0	VERSION_BUMP	71416a4c