How can I format a function declaration to force curly brace at the end of the line?

Question

I have big portions of code where functions are formatted with the opening curly brace on the next line, like this :

function foo()
{
}

I'm trying to figure out how to search / replace in order to change it to this :

function foo(){
}

Answer 1

You can use the new line character is your search (\n for linux):

:%s/)\s*\n{/){/c

Replaces )\s*\n{ into ){

The c flag at the end will ask you to confirm before each replacement.

EDIT: Another solution would be to use the join line feature (J) with the g command:

:g/function [^{]\+$/join

Which will execute the command join on every line matching the pattern function [^{]\+$ ("function" followed by anything without a {).

It will however put a space by default between ) and {, it can be changed by running the following before the g command:

:set nojoinspaces