Re: RFC: Inferior command line arguments

["Eli Zaretskii" <eliz@is.elta.co.il>]

> From: Tom Tromey <tromey@redhat.com>
> Date: 28 Sep 2001 09:01:29 -0600
> 
> Eli> Oh, so in the comment above that confused me you meant ``...will
> Eli> be parsed _by_the_shell_ to yield the same vector'', yes?
> 
> Yeah.  I changed it to read:
> 
>     /* Given a vector of command-line arguments, return a newly allocated
>        string which, when passed to the create_inferior function, will be
>        parsed (on Unix systems, by the shell) to yield the same vector.

Thanks.

> Eli> AFAIK, CreateProcess acts like a stock Windows shell wrt the
> Eli> command line handling.
> 
> I ended up implementing this for win32-nat.c:
> 
>   /* We quote each argument by adding "..." around it.  If the
>      argument contains a quote character, we quote that with a
>      backslash.  */
> 
> I did this based on some readings I found via a google search.  I
> really know very little about Windows.  Does this approach sound
> reasonable?

That is correct AFAIK, but there are complications: the case where the
embedded quote is already preceded by a backslash, and the case where
the argument that needs to be wrapped in quotes ends in a backslash.
And running Cygwin applications needs yet another modification.  For
the full story, see the function sys_spawnve on w32proc.c in the Emacs
distribution.