Change in 'cygstart' functionality?
Nem W Schlecht
Tue Sep 13 19:05:00 GMT 2016
On Tue, Sep 13, 2016 at 12:44 PM, Ken Brown <firstname.lastname@example.org> wrote:
> On 9/13/2016 10:50 AM, Nem W Schlecht wrote:
>> Hello all,
>> So, I used to be able to do this in Cygwin to open a chat session (in
>> my case, With Skype for Business aka S4B):
>> cygstart "sip:email@example.com"
>> But I noticed recently that this now fails with:
>> Unable to start 'firstname.lastname@example.org': The specified file was not
>> I have no idea why the colon ":" is getting converted into an a UTF
>> F038 character. I'm also unsure of when this stopped working, since I
>> don't use it all that often.
> There's no code in cygstart to recognize the SIP protocol. (It wouldn't be
> hard to add such code, as was done a few years ago for "mailto:". See line
> 598 of cygstart.c in the sources for the cygutils package.)
> So cygstart treats "sip:email@example.com" as a file name. The funny Unicode
> character you see comes from Cygwin's translation to allow ":" as part of a
> file name. See
Thanks for the excellent breakdown, Ken. Makes sense with the colon
":". Still not sure why it did work a couple months ago and now
doesn't. I was under the assumption that 'cygstart' was a very basic
program that just passed whatever it was passed on to Windows to
handle - similar to "Start-Process" in Powershell, or well, just like
double-clicking on something on the Desktop.
My 'cygstart's last mod time is Nov 24, 2015 and this was definitely
working *after* that time, so something else changed. It's like
'cygstart' is assuming this is a file and trying to do something smart
that way rather than just letting Windows handle it (as it would
*need* to do if this were indeed a Cygwin path). Again, when I add in
the extra slashes, S4B *does* get the SIP request. Without the
slashes, something in Cygwin is assuming this is a filesystem call.
I'll take a look at the 'cygstart' code and see if (with my lowly
programming skills) I can suggest a patch. :)
Nem W Schlecht
"Perl did the magic. I just waved the wand."
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