Re: Support customized reordering in version sort

Junio C Hamano [off-list ref] writes:

You can define values to optional negatives and optional positives to
express a more
elaborate sort order e.g.

  1.0-pre12 < 1.0-rc0 < 1.0 < 1.0-post1

even though "-post" does not have to be declared as optional positive.

... that is, you say "-pre" is a more negative optional than "-rc"
that is also a negative optional.