diff --git a/vim-update.sh b/vim-update.sh
index 6e0846d..5f700bb 100755
--- a/vim-update.sh
+++ b/vim-update.sh
@@ -11,7 +11,6 @@ DATE=`date +"%a %b %d %Y"`
 MAJORVERSION=`grep "define baseversion" vim.spec | cut -d ' ' -f 3`
 ORIGPL=`grep "define patchlevel" vim.spec | cut -d ' ' -f 3 | sed -e "s/^0*//g"`
 ORIGPLFILLED=`printf "%03d" $ORIGPL`
-PL=$ORIGPL
 
 if [ ! -d vim-upstream ]; then
    git clone https://github.com/vim/vim.git vim-upstream
@@ -22,37 +21,44 @@ else
 fi
 
 pushd vim-upstream
+# get the latest tag. Might be tricky with other packages, but upstream vim uses just a single branch:
 LASTTAG=$(git describe --tags $(git rev-list --tags --max-count=1))
+# vim upstream tags have the form v7.4.123. Remove the 'v' and get major release and patchlevel:
 UPSTREAMMAJOR=$(echo $LASTTAG | sed -e 's/v\([0-9]*\.[0-9]*\).*/\1/')
 LASTPL=`echo $LASTTAG| sed -e 's/.*\.//'`
 LASTPLFILLED=`printf "%03d" $LASTPL`
-echo "$ORIGPLFILLED" == "$LASTPLFILLED"
 if [ "$ORIGPLFILLED" == "$LASTPLFILLED" ]; then
     echo "No new patchlevel available"
     CHANGES=0
 fi
 rm -rf dist/* 2>/dev/null
 make unixall
+# include patchlevel in tarball name so that older sources won't get overwritten:
 mv dist/vim-${UPSTREAMMAJOR}.tar.bz2 dist/vim-${UPSTREAMMAJOR}-${LASTPLFILLED}.tar.bz2
+# We don't include the full upstream changelog in the rpm changelog, just ship a file with
+# the changes:
 git log > dist/README.patches
 popd
 
 cp -f vim-upstream/dist/README.patches README.patches
 cp -f vim-upstream/dist/vim-${UPSTREAMMAJOR}-${LASTPLFILLED}.tar.bz2 .
 if [ $CHANGES -ne 0 ]; then
-	CHLOG="* $DATE Karsten Hopp <karsten@redhat.com> $UPSTREAMMAJOR"
-	$debug sed -i -e "/Release: /cRelease: 1%{?dist}" $SPEC
-	$debug sed -i -e "s/define patchlevel $ORIGPLFILLED/define patchlevel $LASTPLFILLED/" $SPEC
-	$debug sed -i -e "/\%changelog/a$CHLOG.$LASTPLFILLED-1\n- patchlevel $LASTPLFILLED\n" $SPEC
-	$debug fedpkg new-sources vim-${UPSTREAMMAJOR}-${LASTPLFILLED}.tar.bz2
-	$debug git add vim.spec README.patches
-	$debug git commit -m "- patchlevel $LASTPL" 
-	$debug git push
-	if [ $? -eq 0 ]; then
-	    $debug rm -f $HOME/.koji/config
-	    $debug fedpkg build
-	    $debug ln -sf ppc-config $HOME/.koji/config
-	else
-	    echo "GIT push failed"
-	fi
+   CHLOG="* $DATE Karsten Hopp <karsten@redhat.com> $UPSTREAMMAJOR"
+   $debug sed -i -e "/Release: /cRelease: 1%{?dist}" $SPEC
+   if [ "x$MAJORVERSION" != "x$UPSTREAMMAJOR" ]; then
+      $debug sed -i -s "s/define baseversion: $MAJORVERSION/define baseversion: $UPSTREAMMAJOR=/" $SPEC
+   fi
+   $debug sed -i -e "s/define patchlevel $ORIGPLFILLED/define patchlevel $LASTPLFILLED/" $SPEC
+   $debug sed -i -e "/\%changelog/a$CHLOG.$LASTPLFILLED-1\n- patchlevel $LASTPLFILLED\n" $SPEC
+   $debug fedpkg new-sources vim-${UPSTREAMMAJOR}-${LASTPLFILLED}.tar.bz2
+   $debug git add vim.spec README.patches
+   $debug git commit -m "- patchlevel $LASTPL" 
+   $debug git push
+   if [ $? -eq 0 ]; then
+      $debug rm -f $HOME/.koji/config
+      $debug fedpkg build
+      $debug ln -sf ppc-config $HOME/.koji/config
+   else
+      echo "GIT push failed"
+   fi
 fi