Vista - Get-Command -Usage should not display empty lines

When you do "get-command -Usage <cmdlet|alias>", for "cmdlet", it displays
two empty lines before the next prompt while for "alias", there is none.

The behavior is inconsistent and empty lines reduces redability(as well as
copying from Console would require one to modify it to reduce vertical space)

Here is the way to reproduce the behavior
==============================
# For an alias "ls", no newline character before the next prompt.
[^_^]PS[1]>gcm -Usage ls
Get-ChildItem
[^_^]PS[2]>gcm -Usage Get-ChildItem
Get-ChildItem [[-Path] <String[]>] [[-Filter] <String>] [-Include
<String[]>] [
-Exclude <String[]>] [-Recurse] [-Force] [-Verbose] [-Debug] [-ErrorAction
<Act
ionPreference>] [-ErrorVariable <String>] [-OutVariable <String>]
[-OutBuffer <
Int32>]
Get-ChildItem [[-Path] <String[]>] [[-Filter] <String>] [-Include
<String[]>] [
-Exclude <String[]>] [-Recurse] [-Force] [-Name] [-Verbose] [-Debug]
[-ErrorAct
ion <ActionPreference>] [-ErrorVariable <String>] [-OutVariable <String>]
[-Out
Buffer <Int32>]


[^_^]PS[3]>
==============================

As you can see, before the 3rd prompt, there are two blank spaces.

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