From 848997b59a5316167bfe3d3cb3671ca3b0baf9af Mon Sep 17 00:00:00 2001
From: jcarsey <jcarsey@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 9 Aug 2011 16:33:58 +0000
Subject: [PATCH] This adds support for @ prefixed commands in script files.

signed-off-by: jcarsey
reviewed-by: geekboy15a

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12113 6f19259b-4bc3-4df7-8a09-765794883524
---
 ShellPkg/Application/Shell/Shell.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c
index 452c65588b..e817a11142 100644
--- a/ShellPkg/Application/Shell/Shell.c
+++ b/ShellPkg/Application/Shell/Shell.c
@@ -1619,6 +1619,7 @@ RunScriptFileHandle (
   SCRIPT_COMMAND_LIST *LastCommand;
   BOOLEAN             Ascii;
   BOOLEAN             PreScriptEchoState;
+  BOOLEAN             PreCommandEchoState;
   CONST CHAR16        *CurDir;
   UINTN               LineCount;
 
@@ -1806,7 +1807,22 @@ RunScriptFileHandle (
             }
             ShellPrintEx(-1, -1, L"%s\r\n", CommandLine2);
           }
-          Status = RunCommand(CommandLine3);
+          if (CommandLine3[0] == L'@') {
+            //
+            // We need to save the current echo state
+            // and disable echo for just this command.
+            //
+            PreCommandEchoState = ShellCommandGetEchoState();
+            ShellCommandSetEchoState(FALSE);
+            Status = RunCommand(CommandLine3+1);
+
+            //
+            // Now restore the pre-'@' echo state.
+            //
+            ShellCommandSetEchoState(PreCommandEchoState);
+          } else {
+            Status = RunCommand(CommandLine3);
+          }
         }
 
         if (ShellCommandGetScriptExit()) {
-- 
2.39.2