| Regexp | Checks that a specified pattern exists, exists less than a set number of times, or does not exist in the file. |
| RegexpMultiline | Checks that a specified pattern matches across multiple lines in any file type. |
| RegexpOnFilename | Checks that a specified pattern matches based on file and/or folder path. |
| RegexpSingleline | Checks that a specified pattern matches a single-line in any file type. |
| RegexpSinglelineJava | Checks that a specified pattern matches a single-line in Java files. |