aider: Refactored format_messages to use a new function format_content for line-by-line formatting.

# Aider chat conversation:

USER: Now refactor format_messages: extract a function that takes a role and content (where content is a string), and returns the line by line formatted string.

ASSISTANT: To refactor `format_messages`, we will:

1. Create a new function `format_content` that takes a role and content (where content is a string) and returns the line-by-line formatted string.
2. Update `format_messages` to use `format_content`.

Here are the *SEARCH/REPLACE* blocks:

aider/utils.py
```python
<<<<<<< SEARCH
def format_messages(messages, title=None):
=======
def format_content(role, content):
    formatted_lines = []
    for line in content.splitlines():
        formatted_lines.append(f"{role} {line}")
    return "\n".join(formatted_lines)

>>>>>>> REPLACE
```

aider/utils.py
```python
<<<<<<< SEARCH
        elif isinstance(content, str):  # Handle string content
            for line in content.splitlines():
                output.append(f"{role} {line}")
=======
        elif isinstance(content, str):  # Handle string content
            output.append(format_content(role, content))
>>>>>>> REPLACE
```

USER:
# Fix any errors below, if possible.

## Running: flake8 --select=E9,F821,F823,F831,F406,F407,F701,F702,F704,F706 --show-source --isolated aider/utils.py

aider/utils.py:94:8: F821 undefined name 'title'
    if title:
       ^
aider/utils.py:95:26: F821 undefined name 'title'
        output.append(f"{title.upper()} {'*' * 50}")
                         ^
aider/utils.py:97:16: F821 undefined name 'messages'
    for msg in messages:
               ^
aider/utils.py:115:24: F821 undefined name 'format_messages'
    formatted_output = format_messages(messages, title)
                       ^

## See relevant lines below marked with █.

aider/utils.py:
...⋮...
 87│def format_content(role, content):
 88│    formatted_lines = []
...⋮...
 91│    return "\n".join(formatted_lines)
 92│
 93│    output = []
 94█    if title:
 95█        output.append(f"{title.upper()} {'*' * 50}")
 96│
 97█    for msg in messages:
 98│        output.append("")
 99│        role = msg["role"].upper()
100│        content = msg.get("content")
...⋮...
112│
113│
114│def show_messages(messages, title=None, functions=None):
115█    formatted_output = format_messages(messages, title)
116│    print(formatted_output)
117│
118│    if functions:
...⋮...

ASSISTANT: To fix the errors, we need to ensure that the `format_messages` function is properly defined and that the misplaced code is correctly organized. Here are the corrected *SEARCH/REPLACE* blocks:

aider/utils.py
```python
<<<<<<< SEARCH
    return "\n".join(formatted_lines)

    output = []
    if title:
        output.append(f"{title.upper()} {'*' * 50}")

    for msg in messages:
        output.append("")
        role = msg["role"].upper()
        content = msg.get("content")
        if isinstance(content, list):  # Handle list content (e.g., image messages)
            for item in content:
                if isinstance(item, dict) and "image_url" in item:
                    output.append(f"{role} Image URL: {item['image_url']['url']}")
        elif isinstance(content, str):  # Handle string content
            output.append(format_content(role, content))
        content = msg.get("function_call")
        if content:
            output.append(f"{role} {content}")

    return "\n".join(output)
=======
    return "\n".join(formatted_lines)

def format_messages(messages, title=None):
    output = []
    if title:
        output.append(f"{title.upper()} {'*' * 50}")

    for msg in messages:
        output.append("")
        role = msg["role"].upper()
        content = msg.get("content")
        if isinstance(content, list):  # Handle list content (e.g., image messages)
            for item in content:
                if isinstance(item, dict) and "image_url" in item:
                    output.append(f"{role} Image URL: {item['image_url']['url']}")
        elif isinstance(content, str):  # Handle string content
            output.append(format_content(role, content))
        content = msg.get("function_call")
        if content:
            output.append(f"{role} {content}")

    return "\n".join(output)
>>>>>>> REPLACE
```

aider/utils.py

@@ -90,6 +90,8 @@ def format_content(role, content):
         formatted_lines.append(f"{role} {line}")
     return "\n".join(formatted_lines)
 
+
+def format_messages(messages, title=None):
     output = []
     if title:
         output.append(f"{title.upper()} {'*' * 50}")