don't use bashism just to remove trailing ':'

        export PATH=${PATH/$ANDROID_BUILD_PATHS/}

    fi

    if [ -n $ANDROID_PRE_BUILD_PATHS ] ; then

        shopt -s extglob

        export PATH=${PATH/$ANDROID_PRE_BUILD_PATHS?(:)/}

        export PATH=${PATH/$ANDROID_PRE_BUILD_PATHS/}

        # strip trailing ':', if any

        export PATH=${PATH/%:/}

    fi

    # and in with the new