terminal command problem

[au3scr]

hi,

I have problem,If I Type "say string", it will return "string" but if I type "saystring",It will return "tring",How to make script work so that only "say" is command and if i type "saystring" then it returns "is not a valid command Or bad file path".?

here is my script

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#include <GUIConstants.au3>
#include <GUIEdit.au3>
#include <misc.au3>
HotKeySet("^{NUMPADADD}", "IncreaseFont")
HotKeySet("^{NUMPADSUB}", "DecreaseFont")
HotKeySet("{f11}", "fullscreen")
HotKeySet("{enter}", "read_func")
HotKeySet("{up}", "lastcmd")
Global $cmd = ""
Global $newlinestart = @UserName & "@" & @ComputerName & "~#"

;~ HotKeySet ("^{mousewheelup}", "IncreaseFont")
;~ HotKeySet ("^{Mousewheeldown}", "DecreaseFont")
$line = 1
$FontSize = 12
$Form1 = GUICreate("Terminal - "&@WorkingDir, 655, 305, 201, 116, BitOR($GUI_SS_DEFAULT_GUI, $WS_SIZEBOX))
$fsize = 10
$CommandInput = GUICtrlCreateEdit("", 0, 0, 654, 304, BitOR($ES_AUTOVSCROLL, $ES_AUTOHSCROLL, $ES_WANTRETURN, $WS_VSCROLL, $WS_MAXIMIZEBOX, $WS_MINIMIZEBOX))
GUICtrlSetData(-1,"Welcome to CMD 7.10" & @CRLF & "To see avaible commands Type: commands" & @CRLF & @UserName & "@" & @ComputerName & "~#")
GUICtrlSetFont(-1, $fsize, 500, 0, "Trebuchet MS")
GUICtrlSetBkColor(-1, 0x000000)
GUICtrlSetColor(-1, 0xFFFFFF)
GUICtrlCreateTabItem("")
GUISetState()

While 1
    $msg = GUIGetMsg()
    Switch $msg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd


Func read_func()
    $line = _GUICtrlEdit_GetLineCount($CommandInput) - 1
    $Input = _GUICtrlEdit_GetLine($CommandInput, $line)
    Global $inputgetcount = StringLen(@UserName & "@" & @ComputerName & "~#")
    $command = StringTrimLeft($Input, $inputgetcount)
    $Say = StringInStr($command, "say")
    $Exit = StringInStr($command, "exit")
    $cmd = $command
    If $Say Then
        HotKeySet("{enter}")
        $string = StringTrimLeft($Input, $inputgetcount + 4)
        $readfromgui = GUICtrlRead($CommandInput)
        GUICtrlSetData($CommandInput, $readfromgui & @CRLF & $string & @CRLF & $newlinestart)
        $line = $line + 4
        Sleep(100)
        HotKeySet("{enter}", "read_func")
    Else
        If $Exit Then
            Exit
        Else
            HotKeySet("{enter}")
            $readfromgui = GUICtrlRead($CommandInput)
            if FileExists ($command) Then
                Run ($command)
            endif   
            GUICtrlSetData($CommandInput, $readfromgui & @CRLF & "'" & $command & "'" & "is not a valid command Or bad file path" & @CRLF & $newlinestart)
            $line = $line + 4
            Sleep(100)
            HotKeySet("{enter}", "read_func")
        EndIf
    EndIf
EndFunc   ;==>read_func



Func IncreaseFont()
    $FontSize += 1
    GUICtrlSetFont($CommandInput, $FontSize)
EndFunc   ;==>IncreaseFont
Func DecreaseFont()
    $FontSize -= 1
    GUICtrlSetFont($CommandInput, $FontSize)
EndFunc   ;==>DecreaseFont

Func fullscreen()
    $width = @DesktopWidth
    $height = @DesktopHeight
    WinMove("Terminal", "", 0, 0, $width, $height)
EndFunc   ;==>fullscreen

Func lastcmd()
    Send($cmd)
;~ exit
EndFunc   ;==>lastcmd

[martin]

Maybe if you add a space after "say"

$Say = StringInStr($command, "say ")