How to run a command on last edit in vim (i.e. indent)

I added some lines in i开发者_如何学Pythonnsert mode and now I would like to run some command only on these edit. How to perform it?

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Marks '[ and '] locate the start and end lines of newest inserted or changed text. From this, you can simply run

 :'[,']>

to indent those lines once. See :help '[ for more examples. And for instance, formatting the code will happen with

'[=']

and formating a chunk of text with

'[gq']