CreateProcess command line parsing

[Francois Gouget]

On Thu, 10 Nov 2005, Rufoo wrote:

> I am looking at dlls/kernel/process.cc:get_file_name
> that parses the command line. It seems to handle the
> case where the application name has spaces in it but
> the application name is not enclosed in double quotes.
> According to MSDN documentation, CreateProcess
> requires the app name(and the app name in the command
> line) to be enclosed in quotes if it has spaces in it.

Please check MSDN again. Here is what it says:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/createprocess.asp

---
The lpApplicationName parameter can be NULL. In that case, the module 
name must be the first white space-delimited token in the lpCommandLine 
string. If you are using a long file name that contains a space, use 
quoted strings to indicate where the file name ends and the arguments 
begin; otherwise, the file name is ambiguous. For example, consider the 
string "c:\program files\sub dir\program name". This string can be 
interpreted in a number of ways. The system tries to interpret the 
possibilities in the following order:

c:\program.exe files\sub dir\program name
c:\program files\sub.exe dir\program name
c:\program files\sub dir\program.exe name
c:\program files\sub dir\program name.exe
---


The most significant part being 'The system tries to interpret the 
possibilities'. And it's quite common for applications to rely on this.


-- 
Francois Gouget         fgouget at free.fr        http://fgouget.free.fr/
                               145 = 1! + 4! + 5!