What is Vim's feature name for this: # vim:sw=4:ts=4:et:

Question

Even after 20 years with Vim, I keep forgetting name for the Vim feature where the editor picks up config statements from a comment at the beginning (or I think end) of a file:<

Answer 1

It's called modeline. In help it can be found by grepping

helpgrep # vim

If you wish to check whether modeline are active, do set modeline? (if the are it will say modeline, otherwise nomodeline)

To turn them off for certain, add this in your vimrc

:set modelines=0 "number of modelines vim parses
:set nomodeline "turn off parsing