Supporting the --targets option more fully

A couple of months ago, there was a short discussion about supporting
the --targets option more fully. [1] Julian Foad wrote a proposal
regarding how to better handle the --targets option, and I promptly
disappeared from the discussion. :)

[1] http://svn.haxx.se/dev/archive-2006-04/0748.shtml

I've started to do some investigation of my own, and I currently have an
improved version of the patch I sent in the previous discussion. I do
have the following questions:

1) Currently, if multiple --targets options are given, we silently
ignores all but the last one. In such a case, should be process each
one, or simply throw and error?

2) In order to have --targets be used to specify only repeatable
targets, would it be favorable to prepend the list of targets it
generates, rather than append them? In most of the commands I've looked
at, the "special" command arguments are last, so prepending would
maintain the correct meaning of arguments given by their order. Should
such prepending be done for each command individually, or across the board?

Any additional thoughts, as well as suggestions regarding how to best
accomplish this are solicited as well.

-Hyrum

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Received on Wed May 31 21:11:46 2006