FILE006

Error

Go code has formatting issues detected by gofumpt.

Why this matters

gofumpt enforces stricter formatting rules than gofmt, producing more consistent and readable Go code. Inconsistent formatting creates noisy diffs and makes code reviews harder.

How to fix

Run gofumpt to auto-fix formatting:

gofumpt -w path/to/file.go

For the entire project:

gofumpt -w .

Configuration

[validators.file.gofumpt]
enabled = true
timeout = "10s"
extra_rules = true
lang = ""       # auto-detected from go.mod
mod_path = ""   # auto-detected from go.mod

Disable the validator:

[validators.file.gofumpt]
enabled = false

Hook output

When this error is triggered, klaudiush writes JSON to stdout:

permissionDecisionReason (shown to Claude): [FILE006] Go code formatting issues detected. Run 'gofumpt -w <file>' to auto-fix formatting

systemMessage (shown to user): Formatted error with fix hint and reference URL.

additionalContext (behavioral guidance): Automated klaudiush validation check. Fix the reported errors and retry the same command.

Related

• FILE001 - shellcheck failure
• gofumpt documentation