code: def overwrite(
      char_list: List[str], regexp: str, quality: str, offset: int = 0
  ) -> List[str]:
      """
      Given a list of characters and spaces, a matching regular expression, and a quality or
      character, replace the matching character with a space, overwriting with an offset and
      a multiplier if provided.
  
      :param char_list:
      :param regexp:
      :param quality:
      :param offset:
      :return:
  
      >>> overwrite(list("multe igne"), r"e\s[aeiou]", " ")
      ['m', 'u', 'l', 't', ' ', ' ', 'i', 'g', 'n', 'e']
      """
      long_matcher = re.compile(regexp)
      line = "".join(char_list)
      long_positions = long_matcher.finditer(line)
      for match in long_positions:
          (start, end) = match.span()  # pylint: disable=unused-variable
          char_list[start + offset] = quality
      return char_list
  
imports: import re
  import sys
  import unicodedata
  from typing import Dict, List, Tuple
label_desc: Use image node_id 18 for calling a global function with example usage: overwrite(char_list, regexp, quality, offset) and returns: char_list