To disable "Entering Ex mode" in Vim

This answer is based on @NielsBom's comment 4. October 2012 and on @BrianCarper's answer 13. August 2009.

I think NielsBom is completely right, please see the article. The command map is really evil in Vim and has caused me a lot of problems during years. I did not realize the thing before NielsBom's comment. So please use the following command instead:

:nnoremap Q <Nop>

The "combo" is Q. To disable it, simply map Q to something else:

:map Q <whatever>

I use gq, which is used to format text.

If you don't want it do do anything map it to <Nop>:

:map Q <Nop>

<Nop> is meant for use in mapping keys to "nothing". See :h <Nop>.

:map Q <Nop>

Or put it in your ~/.vimrc:

map Q <Nop>

.