msi: Tweak msiexec's usage message.

Francois Gouget fgouget at
Mon May 7 14:54:09 CDT 2012

On Sat, 5 May 2012, Frédéric Delanoy wrote:
> The msiexec conventions look sane to me: [ ] for optional and { } for
> mandatory parameters (*only* when a choice/list is involved). It's
> also what's used in other wine commands "/?" results (e.g. 'start',
> 'ipconfig', 'regedit', etc.).

It's no so consistent.

msiexec uses names like 'product_code' but taskkill uses 'ProcessID' 
(which aspell does not like) and wineconsole uses '<command>'.

regedit describes what 'filename' and 'regpath' means independently of 
the option that uses these, msiexec and start do not describe what 
things like 'package' or 'program_filename' are.

In xcopy it's 'Usage: ... Where: ...' while in wineconsole it's 'Usage: 
... Options: ...' and msiexec has a totally different structure (and 
does not very clearly differentiate commands and options).

For ipconfig there's spaces around brackets while in dxdiag or msiexec 
where's no space around the brackets.

xcopy says '[/Y] [/-Y]' when it should probably be '[/Y | /-Y]', 
although msiexec would likely describe outside of usage line as 

Francois Gouget <fgouget at>    
 Advice is what we ask for when we already know the answer but wish we didn't
                                 -- Eric Jong

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