Shorten check's CLI synopsis

1 files changed, 8 insertions, 1 deletions

diff --git a/src/scadere/__init__.py b/src/scadere/__init__.py
index 7becab1..ada0f29 100644
--- a/src/scadere/__init__.py
+++ b/src/scadere/__init__.py
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with scadere.  If not, see <https://www.gnu.org/licenses/>.
 
-from argparse import HelpFormatter
+from argparse import HelpFormatter, ONE_OR_MORE
 
 __all__ = ['__version__', 'GNUHelpFormatter', 'NetLoc']
 __version__ = '0.1.0'
@@ -33,6 +33,13 @@ class GNUHelpFormatter(HelpFormatter):
         """Substitute 'Options:' for 'options:'."""
         super().start_section(heading.capitalize())
 
+    def _format_args(self, action, default_metavar):
+        """Substitute 'METAVAR...' for 'METAVAR [METAVAR ...]'."""
+        if action.nargs == ONE_OR_MORE:
+            get_metavar = self._metavar_formatter(action, default_metavar)
+            return '{}...'.format(*get_metavar(1))
+        return super()._format_args(action, default_metavar)
+
     def _format_action_invocation(self, action):
         """Format --long-option=argument."""
         if not action.option_strings or action.nargs is not None: