Use https://tlwiki.org/?title=Tools#RScript with an insanely high line length like 5000 so that line breaks aren't added to the script for no reason.

Use also, to clean up control formatting (modify as needed):

{{{#!python
#!python
import sys
import re

for name in sys.argv[1:]:
    if name[-4:] == ".txt":
        with open(name, "r", encoding="cp932") as f:
            for line in f:
                line = line.rstrip()
                line = re.sub(r"\^g\d\d\d", "", line)
                line = re.sub(r"\^[nm]", "", line)
                line = re.sub(r"\^s\d", "", line)
                line = re.sub(r"\^d\d", "", line)
                line = re.sub(r"^grpo_[a-z0-9]*", "", line)
                line = re.sub(r"^grpe", "", line)
                line = re.sub(r"^grpo", "", line)
                line = re.sub(r"^99", "", line)
                line = re.sub(r"\|([^\[]*)\[([^\]]*)\]", r"〈\1〉《\2》", line)
                
                forbidden = r"""~`@#$%^&*()_+-=[]\{}|;':,./<>?"""
                
                for c in forbidden:
                    if c in line:
                        print(line)
                        exit()
                if line == "":
                    continue
                
                print(line)
}}}