ReportScanningTool's help now explains what "no pattern" means
A pattern is defined by an <a href="https://ant.apache.org/manual/Types/fileset.html">Ant Fileset ''includes''</a>
setting that specifies the report files to scan for issues. Multiple patterns can be separated by space or comma.
Note that such a pattern is resolved in Jenkins' workspace, so the paths must be relative only.
+ <p>
+ If no pattern is specified then the build's console text will be scanned instead.
+ </p>
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