[BUG] Diff tool selection is not remembered

[AlexSkrypnyk]

Environment

• Platform (select one):
  • [x] Anthropic API
  • [ ] AWS Bedrock
  • [ ] Google Vertex AI
  • [ ] Other:
• Claude CLI version: 1.0.3
• Operating System: macOS 15.4.1
• Terminal: PHPStorm's terminal, iTerm2

Bug Description

Diff tool selection on a project level is not remembered between sessions. I have to use /config and select the diff tool every time.

Steps to Reproduce

1. claude
2. /config -> change diff tool from auto to terminal
3. exit
4. claude
5. /config
6. Observe that diff tool is set to auto

Expected Behavior

The selection of the diff tool is preserved.

Actual Behavior

The diff tool is reset to auto

Additional Context

This is extremely annoying and disruptive, because Claude keeps opening files in IDE interrupting my flow.

Maybe there is already a config/setting somewhere, but I could not find any docs about this.

[hackyon-anthropic]

Taking a look at this now!

[hackyon-anthropic]

I think I found the issue, should have a fix soon!

[hackyon-anthropic]

hey @AlexSkrypnyk - the fix should be out, please let us know if you encounter this issue again!

[jdehorty]

@hackyon-anthropic Ever since this was pushed I can't seem to get diff-view to work in the IDE at all now. Can you (or anyone) confirm that the IDE diff view on MacOS is working for them as expected?

[hackyon-anthropic]

@jdehorty thanks for the report.

What is the error you're seeing, and what is your dev environment (are you using VSCode or JetBrains)?

Are you seeing the Diff tool option in /config?

[dinhanhthi]

@hackyon-anthropic I don't see the option "Diff tool" in my Claude code :(

[chen-tamarin]

@hackyon-anthropic I don't see the option "Diff tool" in my Claude code :(

Same, on Ubuntu.

[hackyon-anthropic]

You need to connect to the IDE first using /ide before the tool shows up. Alternatively, run claude in the built-in terminal in your IDE!

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