Hi, commit f473f3b contains a small API change: * Pattern class function read_patterns() has been renamed to read_file(), the name already present in class trie_simple. I have updated all examples accordingly. Best regards, Stephan Hennig <URL:https://codeberg.org/sh2d/padrinoma/commit/f473f3bb68c2fc0652b5848caf7cd057dfbba8e0>