The Puzzling Quirks of Regular Expressions
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“Whatever is my right as a man is also the right of another; and it becomes my duty to guarantee as well as to possess.”
― Thomas Paine
This book is copyright of David Mertz, 2021.
It is licensed as Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0). The source is available at:
https://github.com/DavidMertz/RegEx_Puzzles.
Please feel free to utilize it within these terms (but give me credit).