Git pre-commit hook to remove non-breaking spaces from R files

pre-commit

#!/usr/bin/env python3

import subprocess

files = subprocess.check_output(
    'git diff --cached --name-only --diff-filter=ACM *R', shell=True
).decode().strip().split('\n')
files = [f for f in files if f!='']

for f in files:
    try:
        spaces = subprocess.check_output(
            'pcregrep --color=\'auto\' "[\\xa0]" %s' % f, shell=True
        ).decode().strip().split('\n')
    except subprocess.CalledProcessError:
        continue
    print('Replacing nonbreaking spaces:\n')
    if spaces:
        print(f)
        for s in spaces:
            print(s.encode('unicode-escape'))
        subprocess.call(
            'sed -i -e \'s/[\u00a0]/ /g\' %s' % f, shell=True
        )
        subprocess.call(
            'git add %s' % f, shell=True
        )

nice