检查预提交挂钩字符串SVN

Question

我想检查预提交挂钩中SVN提交消息中是否存在字符串“XYZ”。我试过下面的代码：

setlocal enabledelayedexpansion

set REPOS=%1
set TXN=%2

set SVNLOOK="%VISUALSVN_SERVER%\bin\svnlook.exe"

SET M=

REM Concatenate all the lines in the commit message
FOR /F "usebackq delims==" %%g IN (`%SVNLOOK% log -t %TXN% %REPOS%`) DO SET    M=!M!%%g



if [[ $M == * "XYZ"* ]] then
goto NORMAL_EXIT
else
:ERROR_TOO_SHORT
echo "Commit id missing .Please enter the commit id in the format [XYZ - number]";
goto ERROR_EXIT

:ERROR_EXIT
fi



REM All checks passed, so allow the commit.
:NORMAL_EXIT
exit 0

但是当我在SVN中提交时，我现在意外地获得了$ M。我哪里错了？

编辑：它仅对此代码有效，

REM Make sure M is defined
SET M=0%M%

REM Here the 6 is the length we require
IF NOT "%M:~6,1%"=="" goto NORMAL_EXIT

:ERROR_TOO_SHORT
echo "Commit note must be at least 6 letters" >&2
goto ERROR_EXIT

:ERROR_EXIT
exit /b 1

如果我尝试修改它以使用if..else检查字符串，那么它会中断。