golang的go fmt是否不格式化括号？

Question

So I've been trying to use golang again and I remembered go has a formatting tool to clean up your source. So When I run go fmt on my project the following error gets spit out:

expected declaration, found '{'

I was expecting go fmt to fix my brackets to respect go's syntax requirements, but it just spits out an error. Is this intended functionality or is it supposed to actually put the bracket on the correct line (same line as the function declaration)?

Basic code in question that I was expecting to be properly formatted:

package main

func main()
{
    println("Learning go again")
}

Answer 1

Go has some very strong opinions about what a valid code is.
This is one of the cases. Unlike many other C-family languages that allow putting curly bracket of function body declaration on the same line or on the next line (or even ten lines after, if you fancy), Go compiler allows it to be put only on the same line.

Another example is the else statement. Where in other languages

if {
}
else {
}

May be valid or even preferred, in Go only compiling else statement is of the form

if {
} else {
}

The go fmt will fix empty or missing spaces though:

func main()             {
    fmt.Println("Hello, playground")
}

func main(){
   fmt.Println("Hello, playground")
}

Will both become

func main() {
   fmt.Println("Hello, playground")
}