| Attribute | Type | Description | Required |
|---|
| input | string | Represents the input for the regular expression. | True |
| pattern | string | Represents the regular expression to be evaluated. | True |
| failonerror | bool | Determines whether task failure stops the build or is just reported. The default is true. | False |
| if | bool | If true then the task will be executed; otherwise, skipped. The default is true. | False |
| unless | bool | Opposite of if. If false then the task will be executed; otherwise, skipped. The default is false. | False |
| verbose | bool | Determines whether the task should report detailed build log messages. The default is false. | False |