* Marc Haber:
>> What happens if there are multiple ~?
>
> They are processed in order.
>
> dpkg --compare-versions handles ~ correctly.
And APT? Does it behave differently? (There are differences between
the two in the area of epoch handling.)
I'm going to add something like the following:
- Split the version strings u, v at ~ into components (u_1, ..., u_m),
(v_1, ..., v_n).
- If m = 0 and m > 0, then we have v < u.
- If m = 0 and m = 0, then u = v is the result.
- If m > 0 and n = 0, then u < v.
- Otherwise, m,n > 0. If u_1 < v_1, then u < v is the result.
Conversely, v_1 < u_1 means v < u. But if u = v, recursively
compare (u_2, ..., u_m) and (v_2, ..., v_n) using this algorithm.
Does this sound reasonable? (There are a few corner cases involving
empty components and leading and trailing zeros, but let's ignore them
for now, until there is a complete specification.)
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