是否可以插入新行以排列文件的内容？
我有：
1:1 Lorem ipsum dolor sit amet consectetur 1:1 This is sample text of varying length.
adipiscing elit. 1:2 This is another paragraph in this file.
1:2 Vivamus integer non suscipit taciti mus Yet another sentence in this paragraph.
etiam at primis tempor sagittis. 1:3 Another paragraph can be found here!
如何适当地添加空格以使数字对齐？
预期输出：
1:1 Lorem ipsum dolor sit amet consectetur This is sample text of varying length.
adipiscing elit.
1:2 Vivamus integer non suscipit taciti mus This is another paragraph in this file.
etiam at primis tempor sagittis. Yet another sentence in this paragraph.
1:3 Another paragraph can be found here!
编辑：由于线条会排列，因此无需重复数字，因此可以将其删除。
POSIX 合规性是首选。