show 'run --debug' in docs

Reverts commit 4d69165ab6. Now that a
release has this option, it's ok to show it in the docs. It had been
reverted because the 2.2.x docs showed it before 2.2.3 was released.

docs/cli.rst

@@ -95,7 +95,7 @@ the ``--debug`` option.
 
 .. code-block:: console
 
-     $ flask --app hello --debug run
+     $ flask --app hello run --debug
       * Serving Flask app "hello"
       * Debug mode: on
       * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
@@ -103,6 +103,14 @@ the ``--debug`` option.
       * Debugger is active!
       * Debugger PIN: 223-456-919
 
+The ``--debug`` option can also be passed to the top level ``flask`` command to enable
+debug mode for any command. The following two ``run`` calls are equivalent.
+
+.. code-block:: console
+
+    $ flask --app hello --debug run
+    $ flask --app hello run --debug
+
 
 Watch and Ignore Files with the Reloader
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -550,7 +558,7 @@ a name such as "flask run".
 Click the *Script path* dropdown and change it to *Module name*, then input ``flask``.
 
 The *Parameters* field is set to the CLI command to execute along with any arguments.
-This example uses ``--app hello --debug run``, which will run the development server in
+This example uses ``--app hello run --debug``, which will run the development server in
 debug mode. ``--app hello`` should be the import or file with your Flask app.
 
 If you installed your project as a package in your virtualenv, you may uncheck the

docs/config.rst

@@ -47,17 +47,17 @@ Debug Mode
 
 The :data:`DEBUG` config value is special because it may behave inconsistently if
 changed after the app has begun setting up. In order to set debug mode reliably, use the
-``--debug`` option on the ``flask`` command. ``flask run`` will use the interactive
-debugger and reloader by default in debug mode.
+``--debug`` option on the ``flask`` or ``flask run`` command. ``flask run`` will use the
+interactive debugger and reloader by default in debug mode.
 
 .. code-block:: text
 
-    $ flask --app hello --debug run
+    $ flask --app hello run --debug
 
 Using the option is recommended. While it is possible to set :data:`DEBUG` in your
-config or code, this is strongly discouraged. It can't be read early by the ``flask run``
-command, and some systems or extensions may have already configured themselves based on
-a previous value.
+config or code, this is strongly discouraged. It can't be read early by the
+``flask run`` command, and some systems or extensions may have already configured
+themselves based on a previous value.
 
 
 Builtin Configuration Values

docs/debugging.rst

@@ -43,7 +43,7 @@ The debugger is enabled by default when the development server is run in debug m
 
 .. code-block:: text
 
-    $ flask --app hello --debug run
+    $ flask --app hello run --debug
 
 When running from Python code, passing ``debug=True`` enables debug mode, which is
 mostly equivalent.
@@ -72,7 +72,7 @@ which can interfere.
 
 .. code-block:: text
 
-    $ flask --app hello --debug run --no-debugger --no-reload
+    $ flask --app hello run --debug --no-debugger --no-reload
 
 When running from Python:
 

docs/quickstart.rst

@@ -108,7 +108,7 @@ To enable debug mode, use the ``--debug`` option.
 
 .. code-block:: text
 
-    $ flask --app hello --debug run
+    $ flask --app hello run --debug
      * Serving Flask app 'hello'
      * Debug mode: on
      * Running on http://127.0.0.1:5000 (Press CTRL+C to quit)

docs/server.rst

@@ -24,7 +24,7 @@ debug mode.
 
 .. code-block:: text
 
-    $ flask --app hello --debug run
+    $ flask --app hello run --debug
 
 This enables debug mode, including the interactive debugger and reloader, and then
 starts the server on http://localhost:5000/. Use ``flask run --help`` to see the

docs/tutorial/factory.rst

@@ -137,7 +137,7 @@ follow the tutorial.
 
 .. code-block:: text
 
-    $ flask --app flaskr --debug run
+    $ flask --app flaskr run --debug
 
 You'll see output similar to this: