Force columns names hsould have at least 1 column name.
@@ -554,7 +554,7 @@ class KgtkReader(KgtkFormat, ClosableIter[typing.List[str]]):
parser.add_argument( "--fill-short-lines", dest="fill_short_lines",
help="Fill missing trailing columns in short lines with empty values.", action='store_true')
- parser.add_argument( "--force-column-names", dest="force_column_names", help="Force the column names.", nargs='*')
+ parser.add_argument( "--force-column-names", dest="force_column_names", help="Force the column names.", nargs='+')
parser.add_argument( "--gzip-in-parallel", dest="gzip_in_parallel", help="Execute gzip in parallel.", action='store_true')
