Maaz Ahmad migrated the ICUTokenizer in the paradedb/paradedb repository from rust_icu to ICU4X, focusing on dependency management and tokenization in Rust. He refactored the tokenizer to use ICU4X’s WordSegmenter::new_auto, preserving original tokenization behavior while removing UTF-16 handling and simplifying maintenance. By eliminating the ICU feature flag and standardizing ICU availability across all builds, he reduced build complexity and potential symbol conflicts with Postgres. Maaz also updated tests and documentation to reflect ICU4X semantics, ensuring all regression tests passed. His work delivered a more maintainable, consistent, and dependency-light tokenization component for the project.