Regular Expressions

Regular expression specify string matching patterns, and are used in the matches, matchgroup, replaceall and split functions. Regular expression pattern matching is more powerful than simple wildcards, but with this power comes additional complexity.

It is beyond the scope of this User Guide to describe regular expressions. Simple introductory guides to using regular expressions can be found on the web. Try searching for 'regular expression tutorial'. Many programmers and systems have implemented regurlar expressions, and there may be differences between between packages. Patchworks uses the Java JDK implementation of regular expressions, which will have all basic features, but may omit advanced features or implement them differently.

The definitive reference details about the Patchworks regular expression syntax are located at https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html.