} else {
Renderer<Line> renderer = format.getLineRenderer();
if (files.size() > 1 && renderer instanceof FieldRenderer) {
FieldRenderer fieldRenderer = (FieldRenderer) renderer;
fieldRenderer.prependColumn(LogConstants.FILE_NAME, IoUtil.getMaxFilenameWidth(files));
fieldRenderer.addHighlight(new FilenameHighlight());
}
tail.setGrid(renderer);
}
if (cmd.hasOption("f")) {