Fix command parsing for arguments containing _.

qutebrowser/commands/command.py

@@ -29,6 +29,11 @@ from qutebrowser.utils import log, utils, message, docutils, objreg, usertypes
 from qutebrowser.utils import debug as debug_utils
 
 
+def arg_name(name):
+    """Get the name an argument should have based on its Python name."""
+    return name.rstrip('_').replace('_', '-')
+
+
 class Command:
 
     """Base skeleton for a command.
@@ -288,7 +293,7 @@ class Command:
             A list of args.
         """
         args = []
-        name = param.name.rstrip('_').replace('_', '-')
+        name = arg_name(param.name)
         shortname = annotation_info.flag or name[0]
         if len(shortname) != 1:
             raise ValueError("Flag '{}' of parameter {} (command {}) must be "
@@ -304,7 +309,7 @@ class Command:
             if typ is not bool:
                 self.flags_with_args += [short_flag, long_flag]
         else:
-            args.append(name)
+            args.append(param.name)
             if not annotation_info.hide:
                 self.pos_args.append((param.name, name))
         return args
@@ -408,17 +413,16 @@ class Command:
             raise TypeError("{}: invalid parameter type {} for argument "
                             "{!r}!".format(self.name, param.kind, param.name))
 
-    def _get_param_name_and_value(self, param):
-        """Get the converted name and value for an inspect.Parameter."""
-        name = param.name.rstrip('_')
-        value = getattr(self.namespace, name)
+    def _get_param_value(self, param):
+        """Get the converted value for an inspect.Parameter."""
+        value = getattr(self.namespace, param.name)
         if param.name in self._type_conv:
             # We convert enum types after getting the values from
             # argparse, because argparse's choices argument is
             # processed after type conversation, which is not what we
             # want.
             value = self._type_conv[param.name](value)
-        return name, value
+        return value
 
     def _get_call_args(self, win_id):
         """Get arguments for a function call.
@@ -452,14 +456,14 @@ class Command:
                 # Special case for win_id parameter.
                 self._get_win_id_arg(win_id, param, args, kwargs)
                 continue
-            name, value = self._get_param_name_and_value(param)
+            value = self._get_param_value(param)
             if param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD:
                 args.append(value)
             elif param.kind == inspect.Parameter.VAR_POSITIONAL:
                 if value is not None:
                     args += value
             elif param.kind == inspect.Parameter.KEYWORD_ONLY:
-                kwargs[name] = value
+                kwargs[param.name] = value
             else:
                 raise TypeError("{}: Invalid parameter type {} for argument "
                                 "'{}'!".format(

scripts/src2asciidoc.py

@@ -37,7 +37,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(__file__), os.pardir))
 import qutebrowser.app
 from scripts import asciidoc2html, utils
 from qutebrowser import qutebrowser
-from qutebrowser.commands import cmdutils
+from qutebrowser.commands import cmdutils, command
 from qutebrowser.config import configdata
 from qutebrowser.utils import docutils
 
@@ -54,6 +54,14 @@ class UsageFormatter(argparse.HelpFormatter):
         """Override _format_usage to not add the 'usage:' prefix."""
         return super()._format_usage(usage, actions, groups, '')
 
+    def _get_default_metavar_for_optional(self, action):
+        """Do name transforming when getting metavar."""
+        return command.arg_name(action.dest.upper())
+
+    def _get_default_metavar_for_positional(self, action):
+        """Do name transforming when getting metavar."""
+        return command.arg_name(action.dest)
+
     def _metavar_formatter(self, action, default_metavar):
         """Override _metavar_formatter to add asciidoc markup to metavars.