This is cool but why do we need it if Mercurial already supports pre-commit hooks?

For example we have this for refreshing redmine:

  #!/bin/sh
  
  PROJ=""
  
  while [ $# -gt 0 ] ; do
      case $1 in
        --project)
          shift
  	PROJ="&id=$1"
          shift
  	;;
      esac
  done

  echo $"Refreshing Redmine"

  curl -s -o /dev/null "http://issues.qbixstaging.com/sys/fetch_changesets?key=jI$

and here is our PHP syntax check:

  #!/bin/sh

  ### Configuration
  HGBIN="/usr/bin/hg"
  phpPath="/usr/bin/php"
  tmpstyle=`/bin/mktemp -t`

  ### hg log style file
  cat > $tmpstyle << EOF
  changeset = "{files}\n"
  file = "{file}\n"
  EOF

  ### PHP syntax check
  for f in `$HGBIN log -r $HG_NODE:tip --style $tmpstyle | grep -E "\.php[3-5]?$" | sort | uniq` ; do
        res=`$HGBIN cat -r tip $f | $phpPath -l -d display_errors=1 -d error_reporting=4`
        if [ $? -ne 0 ] ; then
                echo $f 1>&2
                echo $res 1>&2
                exit 1
        fi
  done
  rm $tmpstyle

finally here is one for JS:

  #!/bin/sh
  
  ### Configuration
  HGBIN="/usr/bin/hg"
  jshPath="/usr/local/bin/jshint"
  tmpstyle=`/bin/mktemp -t`

  ### hg log style file
  cat > $tmpstyle << EOF
  changeset = "{files}\n"
  file = "{file}\n"
  EOF

  ### JS syntax check
  for f in `$HGBIN log -r $HG_NODE:tip --style $tmpstyle | grep -E "\.js$" | sort | uniq` ; do
        res=`$HGBIN cat -r tip $f | $jshPath --config /projects/.jshintrc --verbose - | grep "(E"`
        st=$?
	if [ $st -eq 0 ] ; then
                echo $f 1>&2
                echo $res 1>&2
                exit 1
        fi
  	if [ $st -gt 1 ] ; then
                exit 1
        fi
  done
  rm $tmpstyle