import csv


def tune_information(filename):
    """Read information for tuning a font (language or features)"""
    tunes = dict()
    if filename:
        with open(filename, 'r', newline='') as tune_file:
            reader = csv.reader(tune_file)
            for line in reader:
                glyph_name = line[0]
                tune = line[1].replace(' ', ',')
                tunes[glyph_name] = tune
    return tunes