[boost] [program_options] Recent changes

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-04-26 01:45:41

Hello,
just before feature freeze, I've committed some changes to program_options:

- the command line parser was refactored. For historic reasons, it has its own 
data structures for representing options, and now it uses the 
options_description class. The internals were also cleaned up.

- the 'implicit' option flag was removed. I've asked for comments on this some 
time ago, and no objections was raised. 

- some methods of 'options_description' and 'option_description' classes were
  removed

- In 1.32, the 'additional_parser' could return only a single option. There's 
a new method of command line parser -- 'add_style_parser', which can be used 
to specify a function that can return vector<option>. This might be 
convenient, for example, for parsing response files

Except for 'implicit' removal, those changes should not affect users of the 
library. However, I'd appreciate if user test the new version and report any 
problems.

- Volodya