Added options -h/--help.

mercurial/commands.py

@@ -1523,6 +1523,7 b' globalopts = ['
     ('', 'time', None, 'time how long the command takes'),
     ('', 'profile', None, 'profile'),
     ('', 'version', None, 'output version information and exit'),
+    ('h', 'help', None, 'display help and exit'),
 ]
 
 norepo = "clone init version help debugconfig debugdata" + \
@@ -1632,7 +1633,10 b' def dispatch(args):'
 
     try:
         try:
-            if options['version']:
+            if options['help']:
+                help_(u, cmd)
+                sys.exit(0)
+            elif options['version']:
                 show_version(u)
                 sys.exit(0)
             elif not cmd:

tests/test-help.out

@@ -112,7 +112,6 b' list of commands (use "hg help -v" to sh'
  update      update or merge working directory
  verify      verify the integrity of the repository
  version     output version and copyright information
-hg add: option -h not recognized
 hg add [OPTION]... [FILE]...
 
 add the specified files on the next commit