pre-commit doesn't work

[c....@schrack-seconet.com]

Hi everyone,

I have a simple pre-commit hook that checks if the log message is empty or 
not:

-------------------------------- START OF SCRIPT 
------------------------------------
#!/bin/sh

REPOS="$1"
TXN="$2"

SVNLOOK=/usr/bin/svnlook

LOG=`$SVNLOOK log $REPOS --transaction $TXN`
if [ -z "$LOG" ]
then
  echo "Log empty ($TXN)" >&2
  exit 1
fi

# All checks passed, so allow the commit.
exit 0;
---------------------------------- END OF SCRIPT 
--------------------------------------

My commits only work after the second attempt to commit (with a log 
message entered). 
The first time I try to commit (with a log message entered), the 
pre-commit fails and the 
error text is empty. If I remember correctly, I've had this error over the 
last few versions I 
had installed. I've also tried the template which comes with subversion, 
but the result is 
the same.

My current version: svn, Version 1.3.0 (r17949)
My linux installation: SuSE 9.1

Any suggestions? :)

best regards,
Chris