Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
211 lines (144 sloc) 3 KB

gofumpt

gofmt, the way it should be pronounced.

cd $(mktemp -d); go mod init tmp; go get mvdan.cc/gofumpt

Enforce a stricter format than gofmt, while being backwards compatible. That is, gofumpt is happy with a subset of the formats that gofmt is happy with.

The tool is a modified fork of gofmt, so it can be used as a drop-in replacement. Running gofmt after gofumpt should be a no-op.

A drop-in replacement for goimports is also available:

cd $(mktemp -d); go mod init tmp; go get mvdan.cc/gofumpt/gofumports

Features

No empty lines at the beginning or end of a function

example
func foo() {
	println("bar")

}
func foo() {
	println("bar")
}

No empty lines around a lone statement (or comment) in a block

example
if err != nil {

	return err
}
if err != nil {
	return err
}

No empty lines before a simple error check

example
foo, err := processFoo()

if err != nil {
	return err
}
foo, err := processFoo()
if err != nil {
	return err
}

Composite literals with elements in separate lines must also separate both braces

example
var ints = []int{1, 2,
	3, 4}
var ints = []int{
	1, 2,
	3, 4,
}

Short case clauses should take a single line

example
switch c {
case 'a', 'b',
	'c', 'd':
}
switch c {
case 'a', 'b', 'c', 'd':
}

Multiline top-level declarations must be separated by empty lines

example
func foo() {
	println("multiline foo")
}
func bar() {
	println("multiline bar")
}
func foo() {
	println("multiline foo")
}

func bar() {
	println("multiline bar")
}

A single declaration spec must not be grouped with parentheses

example
import (
	"single"
)

var (
	foo = "bar"
)
import "single"

var foo = "bar"

Simple var-declaration statements should use short assignments

example
var s = "somestring"
s := "somestring"

Comments which aren't Go directives should start with a whitespace

example
//go:noinline

//Foo is awesome.
func Foo() {}
//go:noinline

// Foo is awesome.
func Foo() {}

Installation

gofumpt is a replacement for gofmt, so you can simply go get it as described at the top of this README and use it.

Alternatively, to use the tool with VS Code, refer to this issue.

License

Note that much of the code is copied from Go's gofmt and goimports commands. You can tell which files originate from the Go repository from their copyright headers. Their license file is LICENSE.google.

gofumpt's original source files are also under the 3-clause BSD license, with the separate file LICENSE.

You can’t perform that action at this time.