Windows Pre-commit hook for comment length Subversion

@echo off  
 :: Stops commits that have empty log messages.        
 @echo off  

 setlocal  

 rem Subversion sends through the path to the repository and transaction id  
 set REPOS=%1  
 set TXN=%2           

 svnlook log %REPOS% -t %TXN% | findstr . > nul  
 if %errorlevel% gtr 0 (goto err) else exit 0  

 :err  
 echo. 1>&2  
 echo Your commit has been blocked because you didn't enter a comment. 1>&2  
 echo Write a log message describing the changes made and try again. 1>&2
 echo Thanks 1>&2
 exit 1

http://stackoverflow.com/questions/869248/windows-pre-commit-hook-for-comment-length-subversion