Naive linter that looks for method-use in Jsonnet

jsonnet-lint-method-use.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

DIRNAME=$(dirname $0)

if [ "$#" != 1 ]; then
  echo "Usage: `basename $0` <file_to_lint>"
  exit 1
fi

OUTPUT=$(cat $1 | sed 's/^ \+//g' | sed 's/^\/\/.*$//g' | sed 's/\(else\|then\|for\)/ \1 /g' | sed ':begin;$!N;s/\n//;tbegin' | sed 's/}/}\n/g' | grep --color=always ')\.[a-zA-Z0-9]\+(')
L=$(echo $OUTPUT | wc -l)

if [[ $L -gt 0 ]]; then
    echo $1:
    echo -e $OUTPUT
fi