Pyhton script to convert matcher Macros names to start with lowercase letter.

rename_matchers.py

#!/usr/bin/env python3

import re
import os

# find matchers starting with upper case letter
pattern=re.compile(r"MATCHER(_P)?\((?P<name>[A-Z][^,\W]+)")

def process_file(file_path:str):
  contents=open(file_path,"r").read()
  for match in pattern.finditer(contents):
    matcher_name = match.group("name")
    fixed_name = matcher_name[0].lower() + matcher_name[1:]    
    # Ensure our replace position is not part of a substring, or starts with 
    # ".:>" is uncommon for a matcher
    replacer=fr"([^a-zA-Z.:>])({matcher_name})([^a-zA-Z.:;])"
    contents=re.sub(replacer, rf"\1{fixed_name}\3", contents)
  open(file_path,"w").write(contents)


for root, dirs, files in os.walk(os.curdir):
    for file in files:
        process_file(os.path.join(root,file))