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From: Florent Teichteil (florent.teichteil_at_[hidden])
Date: 2008-05-22 12:35:07

On Thu, May 22, 2008 at 12:18 PM, Vladimir Prus
<vladimir_at_[hidden]> wrote:
> Florent Teichteil wrote:
>> Hi,
>> I suggest to improve options' parsing error recognition, since
>> program_options does not throw an exception for command line options
>> that are substrings of actual options.
>> To be clear : assume we add an option "myoption" with the
>> boost::program_options::options_description::add_options() function.
>> The following command line options are recognized (program_options
>> does not throw an exception):
>> myoption [OK,should be recognized]
>> myopt [BAD,should not be recognized]
>> The following command line options are not recognized (program_options
>> throws an exception):
>> myoptions [OK,should not be recognized]
>> myopr [OK,should not be recognized]
>> I suggest program_options should parse the entire option string until
>> reaching a '=' or ' ' character, and then trying to recognize this
>> option.
> This is by design. There's a style option 'allow_guessing' that's on by
> default, but you can always pass a different style to the parse_command_line
> function.
> - Volodya

Sorry, I did not noticed it in the documentation. Actually, it is only
mentioned in the reference. As the "allow_guessing" behavior is not
very usual, it should be helpful to mention it in the tutorial? Or at
least mention that one can change the behavior of the command line


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