A DESCRIPTION OF THE PROBLEM :
In the "version number" section of the version, any consecutive "." are collapsed, so:

* "1" == "1.0" == "1......0"

Any trailing "." are dropped:

* "1" == "1." == "1......."

But in the pre-release and build sections, "." are only conditionally collapsed, such that any odd number of trailing "." is considered equal to that number of trailing "." minus one:

* "1-1" == "1-1."
* "1-1." < "1-1.."
* "1-1.." == "1-1..."

This does not extend to non-trailing "." in these sections, where:

* "1-1+1a" == "1-1+1.a" (because number to letter transitions are equal to ".")
* "1-1+1..a" < "1-1+1.a"
* "1-1+1...a" < "1-1+1..a"
* etc.

Empty segments probably ought to be rejected outright.


FREQUENCY : always