Even after closing all instances of vim and vimdiff, when I open two files on a split window (:vsp other_file), a bar appears at the left of the screen, where vimdiff shows diff locations.
How do I remove it and prevent it from appearing again when not in diff mode?
This just started happening to me too. I don't know why it's happening, but the way I found to clear it so far is to go into ~/.vim/view and delete the file associated with that filename. I'd love to hear if you found a better way though.
set foldcolumn=0 to hide the fold margin/bar/column. from: stackoverflow.com/a/54239210/2282427