Vim Buffer has been modified [duplicate]

Question

I am trying to implement an AutoCmd in Vim that needs to be executed when the current buffer has been modified.

I have read through all the events available for AutoCmd in the docs but could not find something that would help determine when a buffer was modified or not.

This doesn't necessarily mean "when a buffer was written" because the action I need to trigger needs to be called when the buffer has been modified including being written.

Any ideas on how to implement a BufIsModified that could achieve this objective?

Note: not a duplicate of What is a vimrc function to determine if a buffer has been modified?, since this question is about an autocmd and not only the buffer modified check

Coccidiosis

Possible duplicate of: https://mcmap.net/q/1423360/-what-is-a-vimrc-function-to-determine-if-a-buffer-has-been-modified – Immemorial

this is odd, how come this question is a duplicate of another question if this was asked first? – Coccidiosis

What duplicate? How do I get https://mcmap.net/q/1423360/-what-is-a-vimrc-function-to-determine-if-a-buffer-has-been-modified to work as an autocmd? (Reason I came here for..) – Contrary

Actual Solution: let modified = getbufvar(bufname('%'), "&mod") – Nominative

@Robert Harvey This is not a duplicate of the linked question. – Ramah

Answer 1

The only thing popped into my mind is to use the CursorMoved and CursorMovedI events.

HTH

Titoism

Sounds to me like that would work, and within the event function test the &modified vim variable, which will be 0 if unchanged or 1 if there has been change since last write to disk. – Lutes

You could run a bunch of Ex commands to totally transform the buffer without ever moving the cursor or entering insert mode. – Gev

I'm willing to make a compromise with Ex commands. The answer combined with Herbert's comments does what I wanted. Thanks! – Coccidiosis

@Gev Your described situation could be considered rare, the EX command that modifies the buffer will very likely cause the cursor moving as well. – Graciagracie