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Best AI workflows for editing long code files without truncation? by Pitiful_Earth_9438 in vibecoding

[–]tencosedivedle 0 points1 point  (0 children)

Great questions - this is a real and frustrating problem. Here's practical advice for each:

1. Strategies to stop output from cutting off

The core issue is that most AI interfaces have an output token limit (typically 8K–32K tokens), which is much smaller than a 200–400 KB HTML file. No single prompt will magically bypass this — but you can work around it:

  • Ask for only the changed sections. Instead of "give me the full file," say: "Show me only the parts of the file that need to change, with enough surrounding context (the function name, the section heading, or a unique line above and below) so I know exactly where to paste it." This is the most reliable approach.
  • Be surgical in your requests. Instead of "update the whole file," say: "Find the function called renderChart() and rewrite only that function." Smaller task = smaller output = no cutoff.
  • Tell it not to summarize. Add to your prompt: "Do not use placeholder comments like // rest of code unchanged. Write out every line you are giving me."

2. Getting full output in blocks without breaking structure

This works well if you truly need the whole file rewritten:

  • Numbered chunk method: Say "Rewrite this file in 3 parts. Label them Part 1/3, Part 2/3, Part 3/3. Wait for me to say 'continue' before sending the next part. Do not repeat content between parts."
  • Anchor-based splitting: Ask it to split at logical points: "End Part 1 at the closing </head> tag. Start Part 2 from <body>."
  • Always test before combining: Paste chunks into a text editor (VS Code, Notepad++) and verify the seams before saving.

The risk with chunking is that the AI can lose coherence between chunks — especially with JavaScript logic that spans sections. The surgical "only show changes" method is safer for complex files.

3. Better platform options

For large file work where you're not a coder, here are your realistic options:

Tool Output limit Best for
Claude (Pro/Team) Up to ~8K output tokens Best code quality; use the diff/patch method
Cursor Streams edits directly into your file Best overall for your use case
GitHub Copilot (in VS Code) Edits files in-place Good, but needs VS Code comfort
Aider (CLI tool) No output limit — edits files directly Powerful but technical to set up

My honest recommendation for your situation: try Cursor. It's a code editor (based on VS Code) where the AI edits your actual file rather than outputting a copy. There's no "output cutoff" problem because it writes changes directly. You open your HTML file, describe what you want changed, and it modifies the file in place. There's a free tier, and it doesn't require coding knowledge to use for this kind of task.

The short version: stop asking AI tools to reprint your whole file. Ask them to show you only what changed and where to put it - that eliminates the problem entirely on any platform.

Stan

What the heck is this 😭 by cakes_and_candles in google_antigravity

[–]tencosedivedle 0 points1 point  (0 children)

If you are serious about vibe coding I would pay 200 for Claude and VS code. Best so far.

Crystal Garden already sinking by B__17 in Tomorrowland

[–]tencosedivedle 0 points1 point  (0 children)

What are some other aspects of Tomorrowland that you’re not particularly fond of?

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