Test, validate and match regular expressions
This regex parses a semicolon-delimited string, extracting four captured groups (champs1, champs2, champs5, champs4, champs3) by skipping fixed numbers of fields. It is designed for structured log or CSV-like lines where specific columns contain the data of interest, such as a CD45 identifier and associated parameters. Useful for data extraction in ETL pipelines or text processing tasks.