[boost] Re: program_options bool_switch usage string ... how to prettify?

From: Jonathan Graehl (jonathan_at_[hidden])
Date: 2004-09-15 18:18:42

I somehow mangled what I meant beyond recognition (although I think 
Vladimir understood my intention)

There already exists the capability:
value<type>(&variable)->default_value(default,"displayed version of 
default")
which gives a usage string
-option: arg (=displayed version of default)

I was asking for something like:
value<type>(&variable)->default_value(default,"displayed version of 
default","displayed version of argument type")
which would give
-option: displayed version of argument type (=displayed version of default)

Although,
->type_text("displayed version of argument 
type")->default_value(default)->default_text("displayed version of default")

might be considered more legible.  I prefer the existing positional 
arguments overload (the meaning should be obvious from context as well 
as library documentation, and remember, you'll be typing many of these 
options)

Also, I'm not sure why 0-argument items couldn't appear in a config 
file.  I declare the number of arguments used by options before I parse 
the config file, after all.

-Jonathan