"lookup.go":           func(f *ast.File) { fixTokenPos(f) },
	"main_test.go":        nil,
	"map.go":              nil,
	"mono.go": func(f *ast.File) {
		fixTokenPos(f)
		insertImportPath(f, `"go/ast"`)
		renameSelectorExprs(f, "syntax.Expr->ast.Expr")
	},
	"named.go":  func(f *ast.File) { fixTokenPos(f); renameSelectors(f, "Trace->_Trace") },