Edit fails to parse some messages with invalid TOML

[ErikBjare]

Edit fails to parse some messages with invalid TOML

[ErikBjare]

🚀 Here's the PR! #81

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Step 1: 🔎 Searching

I found the following snippets in your repository. I will now analyze these snippets and come up with a plan.

Some code snippets I think are relevant in decreasing order of relevance (click to expand). If some file is missing from here, you can mention the path in the ticket description.

gptme/gptme/tools/patch.py

Lines 1 to 128 in e256fc9

	"""
	Gives the LLM agent the ability to patch files, by using a adapted version git conflict markers.
	Example:
	.. chat::
	User: patch the file `hello.py` to ask for the name of the user
	Assistant:
	```patch hello.py
	<<<<<<< ORIGINAL
	print("Hello world")
	=======
	name = input("What is your name? ")
	print(f"hello {name}")
	>>>>>>> UPDATED
	```
	System: Patch applied
	Inspired by aider.
	"""
	import re
	from collections.abc import Generator
	from pathlib import Path
	from ..message import Message
	from ..util import ask_execute
	instructions = """
	To patch/modify files, we can use an adapted version of git conflict markers.
	This can be used to make changes to files we have written in the past, without having to rewrite the whole file.
	Only one Patches should written one per codeblock. Do not continue the codeblock after the UPDATED marker.
	Try to keep the patch as small as possible.
	We can also append to files by prefixing the filename with `append`."""
	examples = """
	> User: patch the file `hello.py` to ask for the name of the user
	```patch hello.py
	<<<<<<< ORIGINAL
	print("Hello world")
	=======
	name = input("What is your name? ")
	print(f"hello {name}")
	>>>>>>> UPDATED
	```
	> User: run the function when the script is run
	```append hello.py
	if __name__ == "__main__":
	hello()
	```
	""".strip()
	ORIGINAL = "\n<<<<<<< ORIGINAL\n"
	DIVIDER = "\n=======\n"
	UPDATED = ">>>>>>> UPDATED\n"
	def apply(codeblock: str, content: str) -> str:
	"""
	Applies the patch in ``codeblock`` to ``content``.
	"""
	# TODO: support multiple patches in one codeblock,
	# or make it clear that only one patch per codeblock is supported
	codeblock = codeblock.strip()
	# get the original and modified chunks
	if ORIGINAL not in codeblock: # pragma: no cover
	raise ValueError(f"invalid patch, no `{ORIGINAL.strip()}`", codeblock)
	original = re.split(ORIGINAL, codeblock)[1]
	if DIVIDER not in original: # pragma: no cover
	raise ValueError(f"invalid patch, no `{DIVIDER.strip()}`", codeblock)
	original, modified = re.split(DIVIDER, original)
	if UPDATED not in modified: # pragma: no cover
	raise ValueError(f"invalid patch, no `{UPDATED.strip()}`", codeblock)
	modified = re.split(UPDATED, modified)[0].rstrip("\n")
	# TODO: maybe allow modified chunk to contain "// ..." to refer to chunks in the original,
	# and then replace these with the original chunks?
	# replace the original chunk with the modified chunk
	new = content.replace(original, modified)
	if new == content: # pragma: no cover
	raise ValueError("patch did not change the file")
	return new
	def apply_file(codeblock, filename):
	codeblock = codeblock.strip()
	_patch, filename = codeblock.splitlines()[0].split()
	if not _patch == "```patch":
	raise ValueError(
	"invalid patch, codeblock is missing leading ```patch", codeblock
	)
	if not Path(filename).exists():
	raise FileNotFoundError(filename)
	with open(filename) as f:
	content = f.read()
	result = apply(codeblock, content)
	with open(filename, "w") as f:
	f.write(result)
	print(f"Applied patch to {filename}")
	def execute_patch(codeblock: str, fn: str, ask: bool) -> Generator[Message, None, None]:
	"""
	Applies the patch.
	"""
	if ask:
	confirm = ask_execute("Apply patch?")
	if not confirm:
	print("Patch not applied")
	return
	try:
	apply_file(codeblock, fn)
	yield Message("system", "Patch applied")
	except (ValueError, FileNotFoundError) as e:

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Step 2: ⌨️ Coding

• Modify gptme/tools/patch.py ✓ 93ca091 Edit

Modify gptme/tools/patch.py with contents:
• Inside the `apply` function, after extracting the `original` and `modified` chunks from the codeblock (right after line 80), add logic to escape backslashes in the `modified` chunk. This can be achieved by replacing single backslashes (`\`) with double backslashes (`\\`). This ensures that when the modified chunk is interpreted as a string in Python, the backslashes are treated correctly.
• Specifically, add the following line of code after line 80: ```python modified = modified.replace("\\", "\\\\") ```
• This change ensures that any backslashes in the modified chunk are correctly escaped, preventing errors when the patched content is interpreted as TOML or any other format that may be sensitive to unescaped backslashes.

--- 
+++ 
@@ -79,6 +79,7 @@
     if UPDATED not in modified:  # pragma: no cover
         raise ValueError(f"invalid patch, no `{UPDATED.strip()}`", codeblock)
     modified = re.split(UPDATED, modified)[0].rstrip("\n")
+    modified = modified.replace("\\", "\\\\")
 
     # TODO: maybe allow modified chunk to contain "// ..." to refer to chunks in the original,
     #       and then replace these with the original chunks?

• Running GitHub Actions for gptme/tools/patch.py ✓ Edit

Check gptme/tools/patch.py with contents:

Ran GitHub Actions for 93ca0919d95db85cbeaa8005d58b95e219e60601:

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Step 3: 🔁 Code Review

I have finished reviewing the code for completeness. I did not find errors for sweep/edit_fails_to_parse_some_messages_with_i.

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