How to stop Vim from automatically inserting the comment leader when Enter is pressed?

Question

If I'm typing a comment in gVim like this

// this is a comment

and I hit ENTER, it will automatically start the next line with //, so it looks like this:

// this is a comment
//

But usually I don't want to write more comments when using this commenting style. Can I stop gVim from automatically doing this, while still keeping the auto-completing of the /* .. */ commenting style?

Answer 1

To disable it while hitting ENTER in insert mode, do :set formatoptions-=r

To disable it while hitting o or O in normal mode, do :set formatoptions-=o

See :help 'formatoptions' and :help fo-table.

Alternatively, you can still press CTRL-U in insert mode if you want to delete characters from start of line till the cursor.