Create an alias to a command that has spaces in it

Question

My use case is to create an alias for opening Firefox. Usually I used Start-Process firefox.exe, which is fine. I would like, though, to just type xfirefox instead. Here is what I have tried:

Quotes

Shaun> set-alias xfirefox "Start-Process firefox.exe"
Shaun> xfirefox
xfirefox : The term 'Start-Process firefox.exe' is not 
recognized as the name of a cmdlet, function, script file, 
or operable program...

Curlies

Shaun> set-alias xfirefox { Start-Process firefox.exe }
Set-Alias : Cannot evaluate parameter 'Value' because its 
argument is specified as a script block and there is no
input. A script block cannot be evaluated without input.

Answer 1

Aliases are just that - aliases for command names - not command names plus arguments. What you want is a function e.g.:

function xfirefox {
    Start-Process firefox.exe $args
}

Then you could launch like so:

xfirefox
xfirefox http://www.stackoverflow.com