[gentoo-dev] versionator negative indices

[Ciaran McCreesh]

There have been a few requests for negative indices in versionator,
where -1 would mean "the last component". This conflicts with the range
syntax, however, so the meaning of things like -2 would be inconsistent
between functions.

However... Getting the last index seems to be something that's needed
often enough to warrant a proper solution. The attached implements
get_version_component_count and get_last_version_component_index.
Thoughts?

-- 
Ciaran McCreesh : Gentoo Developer (Wearer of the shiny hat)
Mail            : ciaranm at gentoo.org
Web             : http://dev.gentoo.org/~ciaranm