diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -893,7 +893,7 @@ table = {
                   [('t', 'text', "", 'commit text'),
                    ('A', 'addremove', None, 'run add/remove during commit'),
                    ('l', 'logfile', "", 'commit text file'),
-                   ('d', 'date', "", 'data'),
+                   ('d', 'date', "", 'date code'),
                    ('u', 'user', "", 'user')],
                   'hg commit [files]'),
     "copy": (copy, [], 'hg copy <source> <dest>'),
@@ -925,7 +925,7 @@ table = {
     "push": (push, [], 'hg push <destination>'),
     "rawcommit": (rawcommit,
                   [('p', 'parent', [], 'parent'),
-                   ('d', 'date', "", 'data'),
+                   ('d', 'date', "", 'date code'),
                    ('u', 'user', "", 'user'),
                    ('F', 'files', "", 'file list'),
                    ('t', 'text', "", 'commit text'),
@@ -945,7 +945,7 @@ table = {
               "hg serve [options]"),
     "status": (status, [], 'hg status'),
     "tag": (tag,  [('t', 'text', "", 'commit text'),
-                   ('d', 'date', "", 'date'),
+                   ('d', 'date', "", 'date code'),
                    ('u', 'user', "", 'user')],
             'hg tag [options] <name> [rev]'),
     "tags": (tags, [], 'hg tags'),
@@ -980,7 +980,7 @@ def run():
 def dispatch(args):
     options = {}
     opts = [('v', 'verbose', None, 'verbose'),
-            ('d', 'debug', None, 'debug'),
+            ('', 'debug', None, 'debug'),
             ('q', 'quiet', None, 'quiet'),
             ('', 'profile', None, 'profile'),
             ('R', 'repository', "", 'repository root directory'),