Vim auto-completion on substitutions and searches in the command line

Question

Is it possible to use Ctrl+n style auto-completion when doing searches and substitution commands in vim?

What I mean is: say I have a variable named myNumber in my current file. If I enter insert mode and type myNu and then hit Ctrl+n, it will autocomplete the word to myNumber (assuming there are no other words that start with those letters).

Is there any way to get this same functionality on the command line? Is there a setting or plugin that will allow me to type /myNu and then hit a key to complete my text search to /myNumber ? Or, more realistically: let me type :s/myN and complete that to :s/myNumber so I can more quickly type out substitution commands?

Answer 1

While in command mode, press Ctrl+f — you will enter command line window. There you can edit your command like in vim. Auto-completion should work too.

Answer 2

Looks like the plugin http://www.vim.org/scripts/script.php?script_id=2222 does more or less exactly what I wanted. Upvoting Kent though, because that's really nifty.

Answer 3

This plugin also enables auto-completion in command line.

https://github.com/vim-scripts/sherlock.vim