docstr: Set attributes and return text without definitions. 
docstr_tok: ["Set","attributes","and","return","text","without","definitions","."]
code: def handleAttributes(self, el: etree.Element, txt: str) -> str:
      """Set attributes and return text without definitions."""
  
      def attributeCallback(match: re.Match[str]):
          el.set(match.group(1), match.group(2).replace("\n", " "))
  
      return ATTR_RE.sub(attributeCallback, txt)
  
file_path: markdown/markdown/extensions/legacy_attrs.py
imports: from __future__ import annotations
  import re
  from markdown.treeprocessors import Treeprocessor, isString
  from markdown.extensions import Extension
  from typing import TYPE_CHECKING
label_desc: Use image node_id 2 for calling the LegacyAttrs obj's underlying member method code with example usage: obj.handleAttributes(el, txt) and returns: ATTR_RE