need = false
			} else {
				d.Syntax.markRemoved()
				*d = Use{}
			}
		}
	}

	if need {
		f.AddNewUse(diskPath, modulePath)
	}
	return nil
}

func (f *WorkFile) AddNewUse(diskPath, modulePath string) {
	line := f.Syntax.addLine(nil, "use", AutoQuote(diskPath))
	f.Use = append(f.Use, &Use{Path: diskPath, ModulePath: modulePath, Syntax: line})
}