Shebangs in scalac code

Question

The scala interpreter allows shebangs, but strangely, scalac borks on them. Are there any tricks like these to get around this flaw?

Answer 1

#! in scala must be closed with !#. For example:

#!/bin/bash
script_dir=$(cd $(dirname "$0") >/dev/null; pwd -P)
classes_dir=${script_dir}/build/classes
src_dir=${script_dir}/src

mkdir -p ${classes_dir}
scalac -d ${classes_dir} $(find ${src_dir} -name '*.scala')

exec /usr/bin/scala -classpath ${classes_dir} "$0" "$@"
!#