guard/listen: The Listen gem listens to file modifications and notifies you about the changes.

23-Jan-2026 735
OS-optimized adapters on MRI for Mac OS X 10.6+, Linux, *BSD and Windows, more info below. Detects file modification, addition and removal. You can watch multiple directories. Regexp-patterns for ignoring paths for more accuracy and speed Increased change detection accuracy on OS X HFS and VFAT volumes. Continuous Integration: tested on selected Ruby environments via Github Workflows.
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