cygstart regression [Was: Re: on the road to 1.5.19 - snapshot testing needed]

Charles Wilson cygwin@cwilson.fastmail.fm
Fri Sep 30 16:31:00 GMT 2005


Christopher Faylor wrote:
> On Fri, Sep 30, 2005 at 09:17:06AM -0600, Aaron Humphrey wrote:
> 
>>I just did some version testing on the cygstart .mdb problem I reported a few
>>days ago(http://cygwin.com/ml/cygwin/2005-09/msg00923.html), and it is
>>indeed a regression from 1.5.18.  Cygstart works fine with 1.5.18, but as
>>early as the 20050909 snapshot(as far back as I have)it fails on MDB files.
> 
> 
> Sorry but I don't have Microsoft Access so I can't check this.  I don't consider
> this a show-stopper either, unfortunately.
> 
> cygstart comes from cygutils.  I don't remember the genesis of this
> utility (just because it is in cygutils doesn't mean that Chuck is
> responsible for it) but it would be nice if the person who supports this
> utility would comment here.

cygstart was contributed by Michael Schapp, who is still around but 
doesn't post often.  cygstart, aside from its option handling, is a very 
simple app.  The core routine just uses the Windows 'ShellExecute' 
function on the specified file.  Windows is then responsible for looking 
up the associated application in the registry, starting it, and causing 
it to load the specified file.  I don't see how anything in cygwin 
itself can affect that.

The ONLY thing I can think of is changes in path handing (conversion 
between 'unix' and 'windows') as cygstart tries to prepare the target 
file's pathname for passing into the ShellExecute function -- variable 
name 'aPath' in the code below.

But I'll defer to Michael for futher analysis.

--
Chuck



static int winStart(const char *aPath, const char *action, const char *args,
                     const char *workDir, int show)
{
     int ret;

     setup_win_environ();

     ret = (int) ShellExecute(NULL, action, aPath, args, workDir, show);
     if (ret >= 32) {
         return TRUE;
     } else {
         printf("Unable to start '%s': %s\n", aPath, startError(ret));
         return FALSE;
     }
}


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