Bump mvdan.cc/gofumpt from 0.8.0 to 0.9.1 in /tools

[dependabot]

Bumps mvdan.cc/gofumpt from 0.8.0 to 0.9.1.

Release notes

Sourced from mvdan.cc/gofumpt's releases.

v0.9.1

This is a bugfix release to address a regression in detecting comment directives with special characters such as //golangcitest:config_path.

Binaries built on go version go1.25.1 linux/amd64 with:

CGO_ENABLED=0 go build -trimpath -ldflags="-w -s"

Consider becoming a sponsor if you benefit from the work that went into this release!

v0.9.0

This release is based on Go 1.25's gofmt, and requires Go 1.24 or later.

A new rule is introduced to "clothe" naked returns for the sake of clarity. While there is nothing wrong with naming results in function signatures, using lone return statements can be confusing to the reader.

Go 1.25's ignore directives in go.mod files are now obeyed; any directories within the module matching any of the patterns are now omitted when walking directories, such as with gofumpt -w ..

Module information is now loaded via Go's x/mod/modfile package rather than executing go mod edit -json, which is way faster. This should result in moderate speed-ups when formatting many directories.

Binaries built on go version go1.25.0 linux/amd64 with:

CGO_ENABLED=0 go build -trimpath -ldflags="-w -s"

Consider becoming a sponsor if you benefit from the work that went into this release!

Changelog

Sourced from mvdan.cc/gofumpt's changelog.

[v0.9.1] - 2025-09-07

This is a bugfix release to address a regression in detecting comment directives with special characters such as //golangcitest:config_path.

[v0.9.0] - 2025-09-02

This release is based on Go 1.25's gofmt, and requires Go 1.24 or later.

A new rule is introduced to "clothe" naked returns for the sake of clarity. While there is nothing wrong with naming results in function signatures, using lone return statements can be confusing to the reader.

Go 1.25's ignore directives in go.mod files are now obeyed; any directories within the module matching any of the patterns are now omitted when walking directories, such as with gofumpt -w ..

Module information is now loaded via Go's x/mod/modfile package rather than executing go mod edit -json, which is way faster. This should result in moderate speed-ups when formatting many directories.

Commits

• ea19095 CHANGELOG: add entry for v0.9.1
• c498b7b format: adjust rxCommentDirective per https://go.dev/doc/comment#syntax
• 2d501b8 format: fix a recent directive format regression
• e350b3c CHANGELOG: update for v0.9.0
• d476dfc update published gofumpt tests to master
• b5fd2eb internal/version: drop manual VCS version code
• c75c2d2 gofumpt ourselves
• 0600733 add support for Go 1.25 ignore directives
• d8f3fb6 load go.mod files via x/mod/modfile rather than go mod edit -json
• ac6e0c7 add tests showing the current behavior with the ignore directive
• Additional commits viewable in compare view

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