--- a/Win32OperatingSystem.st	Wed Oct 05 14:31:01 2016 +0200
+++ b/Win32OperatingSystem.st	Wed Oct 05 14:45:19 2016 +0200
@@ -3552,15 +3552,19 @@
 commandAndArgsForOSCommand:aCommandString
     "get a shell and shell arguments for command execution.
      If aCommandString is a String, the commandString is passed to a shell for execution
-     - see the description of 'sh -c' in your UNIX manual ('cmd.com' in your MSDOS manual).
+     - see the description of 'sh -c' in your UNIX manual ('cmd.exe' in your Windows manual).
      If aCommandString is an Array, the first element is the command to be executed,
-     and the other elements are the arguments to the command. No shell is invoked in this case."
+     and the next elements are the arguments to the command. No shell is invoked in this case.
+     Answer am Array with the command string as the first element,
+     the arguments (a String) as second element,
+     and whether a window should be opened (true, false or nil = let the executed program determine)
+     as third element."
 
     |shell args wDir cmdName path hasRedirection|
 
     aCommandString isNonByteCollection ifTrue:[
         "easy: the caller does not want a shell to be executed"
-        ^ Array with:aCommandString first with:(aCommandString asStringWith:' ').
+        ^ Array with:aCommandString first with:(aCommandString asStringWith:' ') with:nil.
     ].
 
     "/
@@ -3612,13 +3616,13 @@
             (file exists and:[suffix = 'exe' or:[suffix = 'com']]) ifTrue:[
                 "/ is an executable, no shell required
                 path := file fullAlternativePathName.
-                ^ Array with:path with:aCommandString.
+                ^ Array with:path with:aCommandString with:nil.
 "/                ^ Array with:path with:(path, ' ', args).
             ].
             path := self pathOfCommand:cmdName.
             path notNil ifTrue:[
                 "/ is an executable, no shell required
-                ^ Array with:path with:aCommandString.
+                ^ Array with:path with:aCommandString with:nil.
 "/                ^ Array with:path with:(path, ' ', args).
             ].
         ].
@@ -3636,10 +3640,10 @@
     ].
 
     aCommandString isEmptyOrNil ifTrue:[
-        ^ Array with:shell with:nil
-    ].
-
-    ^ Array with:shell with:(' /c "' , aCommandString, '"')
+        ^ Array with:shell with:nil with:nil.
+    ].
+
+    ^ Array with:shell with:(' /c "' , aCommandString, '"') with:false.
 
    "
      self commandAndArgsForOSCommand:'diff'
@@ -4495,7 +4499,7 @@
         fork:true
         newPgrp:true
         inDirectory:dir
-        showWindow:showWindowBooleanOrNil.
+        showWindow:(shellAndArgs at:3).
 
     nullStream notNil ifTrue:[
         nullStream close.