From 244d3101478424cf6045e4eee2b4442443533c5f Mon Sep 17 00:00:00 2001
From: Colin Finck <colin@reactos.org>
Date: Wed, 18 Jul 2007 19:41:25 +0000
Subject: [PATCH] Add the missing "help <command>" functionality in cmd (patch
 by Pierre Schweitzer, heis_spiter AT hotmail DOT com) I slightly modified the
 patch to include a terminating null character See issue #2406 for more
 details.

svn path=/trunk/; revision=27722
---
 reactos/base/shell/cmd/internal.c | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/reactos/base/shell/cmd/internal.c b/reactos/base/shell/cmd/internal.c
index 8f26e18e133..7d25e24e1a8 100644
--- a/reactos/base/shell/cmd/internal.c
+++ b/reactos/base/shell/cmd/internal.c
@@ -127,11 +127,14 @@
  *        Remove all hard code string so they can be
  *		  translate to other langues.
  *
- *    19-jul-2005 (Brandon Turner <turnerb7@msu.edu)
+ *    19-Jul-2005 (Brandon Turner <turnerb7@msu.edu>)
  *        Rewrite the CD, it working as Windows 2000 CMD
  *		
- *    19-jul-2005 (Magnus Olsen <magnus@greatlord.com)
- *        Add SetRootPath and GetRootPath         
+ *    19-Jul-2005 (Magnus Olsen <magnus@greatlord.com>)
+ *        Add SetRootPath and GetRootPath 
+ *
+ *    14-Jul-2007 (Pierre Schweitzer <heis_spiter@hotmail.com>)
+ *        Added commands help display to help command (ex. : "help cmd")           
  */
 
 #include <precomp.h>
@@ -760,7 +763,20 @@ INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
 
 INT CommandShowCommandsDetail (LPTSTR cmd, LPTSTR param)
 {
-	PrintCommandListDetail ();
+	/* If a param was send, display help of correspondent command */
+	if (_tcslen(param))
+	{
+		LPTSTR NewCommand = malloc((_tcslen(param)+4)*sizeof(TCHAR));
+		_tcscpy(NewCommand, param);
+		_tcscat(NewCommand, _T(" /?\0"));
+		DoCommand(NewCommand);
+		free(NewCommand);
+	}
+	/* Else, display detailed commands list */
+	else
+	{
+		PrintCommandListDetail ();
+	}
 	return 0;
 }