# Aider chat conversation:
USER: when run as a script, take a filename on the cmd line. read markdown from the file. parse the markdown structure, so we can iterate through # and #### seactions and do things like discard quoted text > sections easily.
ASSISTANT: To achieve this, we need to modify the `aider/history.py` file to include a main function that accepts a filename as a command-line argument, reads the file, and parses the markdown structure. We will use the `argparse` module to handle command-line arguments and the `markdown` module to parse the markdown file.
Here are the changes:
```python
aider/history.py
<<<<<<< ORIGINAL
import json
import tiktoken
from prompt_toolkit.completion import Completion
from aider import prompts
from .dump import dump # noqa: F401
=======
import argparse
import json
import markdown
import tiktoken
from prompt_toolkit.completion import Completion
from aider import prompts
from .dump import dump # noqa: F401
def main():
parser = argparse.ArgumentParser()
parser.add_argument("filename", help="Markdown file to parse")
args = parser.parse_args()
with open(args.filename, 'r') as f:
text = f.read()
md = markdown.Markdown()
tree = md.parse(text)
for element in tree.getiterator():
if element.tag in ['h1', 'h4'] and element.text is not None:
print(element.text)
elif element.tag == 'blockquote':
continue
else:
print(element.text)
if __name__ == "__main__":
main()
>>>>>>> UPDATED
```
This script will print the text of all `#` and `####` sections and ignore quoted text `>` sections. Other text will be printed as is. If you want to handle other markdown elements differently, you can add more conditions in the for loop.
