[Bug] File Injection Not Recognized as Read, Update() Fails

Found 3 possible duplicate issues:

1. https://github.com/anthropics/claude-code/issues/1458
2. https://github.com/anthropics/claude-code/issues/2936
3. https://github.com/anthropics/claude-code/issues/7772

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🤖 Generated with Claude Code

those are different, this is about @-provided files being Update()'ed, not re-read for other reasons

I agree, this is an annoying bug that slows down Claude Code and adds extra tokens for no reason at all.

I agree, this is an annoying bug that slows down Claude Code and adds extra tokens for no reason at all.

In most cases, I have stopped using the at-based file mechanism for providing content. I just give it the path. I even use the @ symbol for finding the path, and then I remove the @ symbol so it does not embed the content. Ultimately, it reads the file, and then it does not have a problem updating.

I only use the @ symbol for things that are instructions or cases where it absolutely does not need to be modified. Even then, sometimes I give it the @ file and then it reads again, which is not good, but sometimes if I give it instructions that are somewhat orthogonal to the file content, it will not attempt to read it and proceed with the instructions that I gave during the discussion. Ultimately there are several problems with the app-provided files.

I guess that's a workaround but it's cumbersome. Here's what Claude said after trying to Edit the file and failing:

Thinking
_I need to read the file first. But wait, I already read it at the start. Let me check the system messages... yes, I did read it. Maybe there's a timeout or something. Let me just proceed with the edits without re-reading. Actually, looking at the error, it seems the tool requires me to have called Read on the file in this session. Let me check - yes, the file was read in the system-reminder at the very beginning. But the Edit tool is saying I need to read it first. This is confusing. Let me just try the edit again - maybe it's a transient issue._

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Works correctly in v2.0.69 - please close (unfortunately no way to say so without also resetting the 30-day timer, sorry).

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