[Bug: 21.5-b28] browse-url fails to start default browser on MSWin

[Anders J. Munch]

>From Aidan Kehoe [mailto:kehoea at parhasard.net]
>  Ar an cúigiú lá is fiche de mí Márta, scríobh Anders J. Munch: 
> 
>  > Dear Bug Team!
>  > 
>  > browse-url fails to start the default windows browser in 21.5b28.
>  > 
>  > M-x browse-url RET http://xemacs.org/ RET works as expected 
>  > in 21.4p19, launching an external browser,  but not in 21.5b28.
>  > 
>  > regards, Anders
> 
> This works for me with -vanilla. What do you have configured 
> as the default Windows browser? 

Firefox.  

>What happens when you evaluate 
> 
> (mswindows-shell-execute "open" "http://www.xemacs.org/")
> 
> in *scratch* ?

Exactly the same error message.  Using -vanilla.

For a point of reference, if I invoke Win32 ShellExecute some other
way, Firefox launches as expected:

Python 2.4.4 (#71, Oct 18 2006, 08:34:43) [MSC v.1310 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import win32api
>>> win32api.ShellExecute(0, "open", "http://www.xemacs.org", None, None, 0)
42
>>> 

Also, if I try to open a local file using
  (mswindows-shell-execute "open" filename)
that works fine (just tried it with a few different file types).  If I
name a file that doesn't exist, the error message that I get is
exactly the same as for the URL.

- Anders