How to bring the marker to middle of the screen?

Question

In vim, when I go to a marker, is there a way to tell vim to scroll it to the middle automatically instead of me doing z. or zz again?

or is there an event from vim when I go to marker like vim buffer events?

Commands to run pre and post inbuilt commands seems like a powerful thing. So there might be a plugin to do this. Couldn't find a query for google for this.

Answer 1

If this is just for moving to a marker with ' and friends (or just a few more select motions), you can override the original commands with custom mappings like this:

:nnoremap <expr> ' "'" . nr2char(getchar()) . 'zz'
:nnoremap <expr> ` "`" . nr2char(getchar()) . 'zz'

These basically turn (typed) 'a into (executed) 'azz; the complication here is that the ' command waits for the typed mark; the mapping does this via getchar() before assembling and returning the full command. The <expr> makes Vim execute the right-hand side as an expression and use the result, instead of directly executing it.

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To keep the cursor in the middle of the window at all times, set the 'scrolloff' option to a high value (like 999) instead.

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Speaking of events, there's CursorMoved that is triggered after each move; unfortunately, there's no indication which command caused the move.