Issue #25219: Update doc for Idle command line options.

Some were missing and notes were not correct.

Doc/library/idle.rst

@@ -504,27 +504,28 @@ Command line usage
 
 ::
 
-   idle.py [-c command] [-d] [-e] [-s] [-t title] [arg] ...
-
-   -c command  run this command
-   -d          enable debugger
-   -e          edit mode; arguments are files to be edited
-   -s          run $IDLESTARTUP or $PYTHONSTARTUP first
+   idle.py [-c command] [-d] [-e] [-h] [-i] [-r file] [-s] [-t title] [-] [arg] ...
+
+   -c command  run command in the shell window
+   -d          enable debugger and open shell window
+   -e          open editor window
+   -h          print help message with legal combinatios and exit
+   -i          open shell window
+   -r file     run file in shell window
+   -s          run $IDLESTARTUP or $PYTHONSTARTUP first, in shell window
    -t title    set title of shell window
+   -           run stdin in shell (- must be last option before args)
 
 If there are arguments:
 
-#. If ``-e`` is used, arguments are files opened for editing and
-   ``sys.argv`` reflects the arguments passed to IDLE itself.
+* If ``-``, ``-c``, or ``r`` is used, all arguments are placed in
+  ``sys.argv[1:...]`` and ``sys.argv[0]`` is set to ``''``, ``'-c'``,
+  or ``'-r'``.  No editor window is opened, even if that is the default
+  set in the Options dialog.
 
-#. Otherwise, if ``-c`` is used, all arguments are placed in
-   ``sys.argv[1:...]``, with ``sys.argv[0]`` set to ``'-c'``.
+* Otherwise, arguments are files opened for editing and
+  ``sys.argv`` reflects the arguments passed to IDLE itself.
 
-#. Otherwise, if neither ``-e`` nor ``-c`` is used, the first
-   argument is a script which is executed with the remaining arguments in
-   ``sys.argv[1:...]``  and ``sys.argv[0]`` set to the script name.  If the
-   script name is '-', no script is executed but an interactive Python session
-   is started;    the arguments are still available in ``sys.argv``.
 
 Running without a subprocess
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Lib/idlelib/help.html

@@ -478,27 +478,28 @@ executed in the Tk namespace, so this file is not useful for importing
 functions to be used from IDLE&#8217;s Python shell.</p>
 <div class="section" id="command-line-usage">
 <h3>25.5.4.1. Command line usage<a class="headerlink" href="#command-line-usage" title="Permalink to this headline">¶</a></h3>
-<div class="highlight-python3"><div class="highlight"><pre>idle.py [-c command] [-d] [-e] [-s] [-t title] [arg] ...
+<div class="highlight-python3"><div class="highlight"><pre>idle.py [-c command] [-d] [-e] [-h] [-i] [-r file] [-s] [-t title] [-] [arg] ...
 
--c command  run this command
--d          enable debugger
--e          edit mode; arguments are files to be edited
--s          run $IDLESTARTUP or $PYTHONSTARTUP first
+-c command  run command in the shell window
+-d          enable debugger and open shell window
+-e          open editor window
+-h          print help message with legal combinatios and exit
+-i          open shell window
+-r file     run file in shell window
+-s          run $IDLESTARTUP or $PYTHONSTARTUP first, in shell window
 -t title    set title of shell window
+-           run stdin in shell (- must be last option before args)
 </pre></div>
 </div>
 <p>If there are arguments:</p>
-<ol class="arabic simple">
-<li>If <tt class="docutils literal"><span class="pre">-e</span></tt> is used, arguments are files opened for editing and
+<ul class="simple">
+<li>If <tt class="docutils literal"><span class="pre">-</span></tt>, <tt class="docutils literal"><span class="pre">-c</span></tt>, or <tt class="docutils literal"><span class="pre">r</span></tt> is used, all arguments are placed in
+<tt class="docutils literal"><span class="pre">sys.argv[1:...]</span></tt> and <tt class="docutils literal"><span class="pre">sys.argv[0]</span></tt> is set to <tt class="docutils literal"><span class="pre">''</span></tt>, <tt class="docutils literal"><span class="pre">'-c'</span></tt>,
+or <tt class="docutils literal"><span class="pre">'-r'</span></tt>.  No editor window is opened, even if that is the default
+set in the Options dialog.</li>
+<li>Otherwise, arguments are files opened for editing and
 <tt class="docutils literal"><span class="pre">sys.argv</span></tt> reflects the arguments passed to IDLE itself.</li>
-<li>Otherwise, if <tt class="docutils literal"><span class="pre">-c</span></tt> is used, all arguments are placed in
-<tt class="docutils literal"><span class="pre">sys.argv[1:...]</span></tt>, with <tt class="docutils literal"><span class="pre">sys.argv[0]</span></tt> set to <tt class="docutils literal"><span class="pre">'-c'</span></tt>.</li>
-<li>Otherwise, if neither <tt class="docutils literal"><span class="pre">-e</span></tt> nor <tt class="docutils literal"><span class="pre">-c</span></tt> is used, the first
-argument is a script which is executed with the remaining arguments in
-<tt class="docutils literal"><span class="pre">sys.argv[1:...]</span></tt>  and <tt class="docutils literal"><span class="pre">sys.argv[0]</span></tt> set to the script name.  If the
-script name is &#8216;-&#8216;, no script is executed but an interactive Python session
-is started;    the arguments are still available in <tt class="docutils literal"><span class="pre">sys.argv</span></tt>.</li>
-</ol>
+</ul>
 </div>
 <div class="section" id="running-without-a-subprocess">
 <h3>25.5.4.2. Running without a subprocess<a class="headerlink" href="#running-without-a-subprocess" title="Permalink to this headline">¶</a></h3>
@@ -661,7 +662,7 @@ are currently:</p>
     The Python Software Foundation is a non-profit corporation.
     <a href="https://www.python.org/psf/donations/">Please donate.</a>
     <br />
-    Last updated on Sep 12, 2015.
+    Last updated on Sep 23, 2015.
     <a href="../bugs.html">Found a bug</a>?
     <br />
     Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.2.3.