fix_title_case.py

import re

def process_line(line):
    if not line.startswith('+msgstr'):
        return line

    # Extract the content within quotes
    content = re.search(r'\+msgstr "(.*)"', line)
    if not content:
        return line

    content = content.group(1)
    if not content or content.isspace():
        return line
    words = content.split()

    def is_unicode_word(word):
        # Skip '&' at the beginning if present
        word = word[1:] if word.startswith('&') else word
        return word and any(ord(char) > 127 for char in word)

    def process_word(word, is_first_word):
        if word.startswith('&'):
            return '&' + process_word(word[1:], is_first_word)
        elif not is_first_word and is_unicode_word(word) and len(word) > 1 and word[0].isupper():
            return word[0].lower() + word[1:]
        else:
            return word

    # Process words, keeping the first word as is
    processed_words = [process_word(words[0], True)] + [process_word(word, False) for word in words[1:]]
    return f'+msgstr "{" ".join(processed_words)}"\n'

def process_file(input_file, output_file):
    with open(input_file, 'r', encoding='utf-8') as infile, open(output_file, 'w', encoding='utf-8') as outfile:
        for line in infile:
            processed_line = process_line(line)
            if processed_line != line:
                print(line, processed_line, sep='', end='')
            outfile.write(processed_line)

# Example usage
input_file = 'new.patch'
output_file = 'output.patch'
process_file(input_file, output_file)