[help-gengetopt] bug: gengetopt v.2.19.2

[TM]

Hi Lorenzo,

I've come across a bug in gengetopt version 2.19.2 when option 
include-getopt' is used. I attach a small project to demonstrate the issue.

Basically, if there are 2 options Q and W and the program is invoked as:
  prog -Q -W
everything is fine. However, if the program is invoked as:
  prog -QW
gengetopt generates an error message and terminates the program.

I am using Microsoft Visual Studio to compile the project. However, up 
to and including version 2.19.1 I have used a version of getopt taken 
from glibc and never had any such problems. I believe that this is a bug 
in the implementation of getopt that was added to version 2.19.2 of 
gengetopt.

Thanks
TM

v2.19.2_bug01.zip
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