Is There event of autocmd in vim triggered by inputing character exceeding the specified column number?

Question

Is There event of autocmd in vim triggered by inputing beyond specify column ? I can't find the event I need. If the event doesn't exist, can I customize event of autocmd ? I want to execute a command When my input character exceeds the specified column number.

This command :match Underlined /.\\%>81v/ can specify style of characters beyond 81 , and now I want to run command instead of changing style.

Answer 1

The CursorMovedI event is triggered in insert mode whenever the cursor moves (due to typing, movement, etc.) The current screen column can be queried via virtcol('.') ; the col('.') function returns the byte index , which is different when there are tabs, double-width characters, or any non-ASCII character. So, you can trigger a custom function via

:autocmd CursorMovedI * if virtcol('.') > 80 | ... | endif

However, if you're just after automatically inserting a linebreak after a certain column, that functionality is built in. See :help 'textwidth' (alternatively 'wrapmargin' ) and :help fo-table . The following will break text after 80 columns:

:set textwidth=80 formatoptions+=t