diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1493,7 +1493,10 @@ def help_(ui, name=None, with_version=Fa
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
-            doc = gettext(e[0].__doc__)
+            doc = e[0].__doc__
+            if doc and 'DEPRECATED' in doc and not ui.verbose:
+                continue
+            doc = gettext(doc)
             if not doc:
                 doc = _("(no help text available)")
             h[f] = doc.splitlines(0)[0].rstrip()
diff --git a/tests/test-extension b/tests/test-extension
--- a/tests/test-extension
+++ b/tests/test-extension
@@ -73,11 +73,25 @@ def debugfoobar(ui, repo, *args, **opts)
     "yet another debug command"
     pass
 
-cmdtable = {"debugfoobar": (debugfoobar, (), "hg debugfoobar")}
+def foo(ui, repo, *args, **opts):
+    """yet another foo command
+
+    This command has been DEPRECATED since forever.
+    """
+    pass
+
+cmdtable = {
+    "debugfoobar": (debugfoobar, (), "hg debugfoobar"),
+    "foo": (foo, (), "hg foo")
+}
 EOF
 debugpath=`pwd`/debugextension.py
 echo "debugextension = $debugpath" >> $HGRCPATH
+echo "% hg help"
 hg help debugextension
+echo "% hg help --verbose"
+hg --verbose help debugextension
+echo "% hg help --debug"
 hg --debug help debugextension
 echo 'debugextension = !' >> $HGRCPATH
 
diff --git a/tests/test-extension.out b/tests/test-extension.out
--- a/tests/test-extension.out
+++ b/tests/test-extension.out
@@ -19,15 +19,47 @@ Foo
 empty extension - empty cmdtable
 
 no commands defined
+% hg help
 debugextension extension - only debugcommands
 
 no commands defined
+% hg help --verbose
+debugextension extension - only debugcommands
+
+list of commands:
+
+ foo:
+      yet another foo command
+
+enabled extensions:
+
+ debugextension   only debugcommands
+
+global options:
+ -R --repository      repository root directory or symbolic path name
+    --cwd             change working directory
+ -y --noninteractive  do not prompt, assume 'yes' for any required answers
+ -q --quiet           suppress output
+ -v --verbose         enable additional output
+    --config          set/override config option
+    --debug           enable debugging output
+    --debugger        start debugger
+    --encoding        set the charset encoding (default: ascii)
+    --encodingmode    set the charset encoding mode (default: strict)
+    --traceback       print traceback on exception
+    --time            time how long the command takes
+    --profile         print command execution profile
+    --version         output version information and exit
+ -h --help            display help and exit
+% hg help --debug
 debugextension extension - only debugcommands
 
 list of commands:
 
  debugfoobar:
       yet another debug command
+ foo:
+      yet another foo command
 
 enabled extensions: