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From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-05-07 07:47:21

Neal D. Becker wrote:

> There are 2 choices:
> 1) Don't correctly parse some correct cases
> or
> 2) Give confusing error message for incorrect case.
> You'll agree #2 is better than #1.

Yes, I do agree.

> So:
> -a -3
> where -3 is a valid option, and -a takes a value.

Well... if we agree that "-a -3" is a correct case, then it should be handled.
The reason why I'm suspicious is that it's clearly ambiguous, and I prefer to
handle ambiguity as error.

OTOH, "token following option with value is always value" is a simple rule,
which is good.

Things get more messy if "-a" has *optional* value. Should we parse "-3" as
value, or as option. In fact, I wonder if we should have optional values at
all, but that's a topic for a separate post.

> I'm not sure what gnu getopt does in this case (although it seems to always
> do the right thing (TM), because I'm sure I've used this and never noticed
> a problem).

Jonathan say getopt does what your propose, which does qualify as good

I've made the change in revision 289.


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