To use a Bash variable for the text value in your curl command, you need to ensure the variable is expanded correctly and that the content is properly formatted, especially since you're including a multi-line string (like a Python code block).

Option 1: Single Quotes (Recommended)

Wrap the entire text field in single quotes and use double quotes inside the variable for the Python code block:

text="print(\"test\")"
curl 'URL' \
  -F 'mode=comment' \
  -F "text=$'```python\n${text}\n```'"

Option 2: Double Quotes (Less Secure)

If you use double quotes, ensure the variable is expanded and the quotes inside the variable are escaped:

text='print("test")'
curl 'URL' \
  -F 'mode=comment' \
  -F "text=\"\"\"```python\n${text}\n```\"\"""

Option 3: Using printf for Multi-line Strings

For more complex multi-line strings, use printf to handle newlines and quotes:

text="print(\"test\")"
curl 'URL' \
  -F 'mode=comment' \
  -F $'text=```python\n'"$text$'\n```'

Key Points:

• Use single quotes for the text field to avoid unintended variable expansion.
• Use double quotes for the variable inside the text field to allow expansion.
• If your text contains quotes or special characters, escape them properly.

Which approach are you using for your actual use case? I can help tailor the solution further!