How to change a word in Vim (and all of its other occurrences)

Question

I frequently use the combination c-a-w to change a word in Vim.

Are there any similar means by which one can quickly also change all other occurrences of said word in the specific file?

Answer 1

Use gn option for this purpose, in my case, I have a slightly different version of it

" allows me to use a smarter cgn
nnoremap c* *<c-o>cgn
nnoremap c# #<C-o>cgn

Now when you have to change a word many times, as long as you have not so many of it, because in this case, a classical substitution would be better, just press c* and then press "dot --> ." to change the next occurrencies of it.

If you want to see how awesomeness gn can give us have a look at: Operating on search matches using gn (vimcasts)

Answer 2

You could try:

%s/<CTRL-R><CTRL-W>/NewWord/g

<CTRL-R><CTRL-W> means keep control key pressed and hit R and W. This copies the word under the cursor to the command line.

See :help c_CTRL-R_CTRL-W.