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From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-02-28 10:50:18

the program options library allows to mark an option as "implicit". That mean
that specifying a value on the command line is optional. One can write either

   --someoption foo


   --someoption --someotheroption

In the first case, the --someoption has a value 'foo', and in the second case,
it has no explicit value. This behaviour is tricky -- we try to look at the
next token and figure out if it's option or not. In particular, we'll fail
for the case of

   --someoption -1

and we'll also fail for the case where the token following "--someoption" is
an option recognized by the user-provided "additional parser".

I would like to deprecate the 'implicit' options and eventually remove them.
Another alternative is to require that value for implicit options is
specified in the same token:


Another problem is with the "multitoken" options. Those are options which
allow the value to span several tokens on the command line. Again, we need to
check, for each token, if it looks like option or like value, and this is
tricky. I'd like to deprecate this behaviour as well.

Any objections?

- Volodya

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