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Subject:	Re: What is wrong with the name excel?
To:	Erik Soderquist <ErikSoderquist AT gmail DOT com>, cygwin <cygwin AT cygwin DOT com>
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From:	Eliot Moss <moss AT cs DOT umass DOT edu>
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Date:	Fri, 17 Apr 2020 14:01:44 -0400
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On 4/17/2020 1:24 PM, Erik Soderquist via Cygwin wrote:
> On Fri, Apr 17, 2020 at 7:11 AM Gerlach van Beinum wrote:
>>
>> I made a program to read a csv file from Excel. I called it excel.c
>> and it made an executable excel.exe
>> If irun that executable with:
>> ./excel.exe
>> nothing happens, i.i. no output.
>>
>> If I rename it to a.exe it runs OK.
>>
>> What about this name excel??
> 
> I believe this is actually a Windows issue; Windows recognizes
> "excel.exe" as 'a Microsoft package' and intercepts the call to launch
> the program, though I would expect Microsoft Excel to launch rather
> than 'nothing happening'
> 
> I've had this problem before on hosts that did not even have Cygwin
> installed when the executable file name matched an existing 'Microsoft
> package'

What seems a little odd to me is this.  If I had invoked via:

     excel.exe

I would not be surprised the MS Excel would launch, because it is probably
earlier in the path.  But the OP said he typed:

     ./excel.exe

So I am surprised, given the explicit path.  Which leads me to a background
wondering of whether ./excel.exe has execute permission set.  If not maybe
the search would continue, trying to find something on the path that could
be executed?  That would surprise me a little, but I'd have to go read the
fine print on bash, etc.

Regards - Eliot Moss
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