go/src/go/printer/comment.go

// formatDocComment reformats the doc comment list,
// returning the canonical formatting.
func formatDocComment(list []*ast.Comment) []*ast.Comment { … }

// isDirective reports whether c is a comment directive.
// See go.dev/issue/37974.
// This code is also in go/ast.
func isDirective(c string) bool { … }

// allStars reports whether text is the interior of an
// old-style /* */ comment with a star at the start of each line.
func allStars(text string) bool { … }