Why is only "if", but not "for" and "switch", allowed to follow "else" keyword?

[tapi...@gmail.com]

IMO, the bar function is cleaner and more readable than the foo function.

How do you think?

    func foo() {
        if vs := f(); len(vs) == 0 {
        } else {
            for _, v := range vs {
            }
        }
       
        if vs := f(); len(vs) == 0 {
        } else {
            switch {
            case len(bs) == 0:
            case len(bs) == 1:
            default:
              }
        }
    }

    // vs.

    func bar() {
        if vs := f(); len(vs) == 0 {
        } else for _, v := range vs {
        }
       
        if vs := f(); len(vs) == 0 {
        } else switch {
        case len(vs) == 0:
        case len(vs) == 1:
        default:
        }
    }

[Jan Mercl]

IMO opinion the answer is nicely demonstrated in the alignment of sone of the closing braces you've chosen in the func bar example.

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[Ian Lance Taylor]

Well, why stop there? Why not

if vs := f(); len(vs) == 0 {

} else f2()

if vs := f(); len(vs) == 0 {

} else x = y

There is a simple rule:
if <condition> <block> [else <block>]
In fact, for a while in the very early days of Go, that was the only
rule. But experience showed that people naturally want to write
if/else if/else, and having to add extra braces was frustrating, and
they tended to stack up. So the rule was extended to (roughly):
if <condition> <block> [else if <condition> <block> [else <block>]]

There's no obvious need to extend the rule in any other way. It's not
something that people are running into.

Ian

[tapi...@gmail.com]

These are different. "for" and "switch" are both code block start keywords, just the same as "if".