Handle calling a command with an unexpected keyword argument errors.

[software/pymin.git] / pymin / dispatcher.py

diff --git a/pymin/dispatcher.py b/pymin/dispatcher.py
index 0127d4f6410cc9fe10f49aa818236d45453f566d..314817d13e227e1d57b08b75eb58634330873cde 100644 (file)
--- a/pymin/dispatcher.py
+++ b/pymin/dispatcher.py
@@ -384,6 +384,7 @@ def parse_command(command):
     return (seq, dic)
 
 args_re = re.compile(r'\w+\(\) takes (.+) (\d+) \w+ \((\d+) given\)')
+kw_re = re.compile(r'\w+\(\) got an unexpected keyword argument (.+)')
 
 class Dispatcher:
     r"""Dispatcher([root]) -> Dispatcher instance :: Command dispatcher.
@@ -459,8 +460,15 @@ class Dispatcher:
                 pl = ''
                 if n_ok > 1:
                     pl = 's'
-                raise WrongArgumentsError(u'%s takes %s %s argument%s, %s given'
+                raise WrongArgumentsError(
+                        u'Command "%s" takes %s %s argument%s, %s given.'
                             % (handler.__name__, quant, n_ok, pl, n_bad))
+            m = kw_re.match(unicode(e))
+            if m:
+                (kw,)  = m.groups()
+                raise WrongArgumentsError(
+                        u'Command "%s" got an unexpected keyword argument %s.'
+                            % (handler.__name__, kw))
             raise