bug#35939: version sort is incorrect with hyphen-minus

[Ian Jackson]

Paul Eggert writes ("Re: bug#35939: version sort is incorrect with 
hyphen-minus"):
> GNU sort uses the same algorithm as glibc strverscmp, and this algorithm has 
> changed only once since strverscmp was added to glibc in 1997. The change was 
> made in 2009, to fix this bug:
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=9913
> 
> Has the Debian version-comparison algorithm changed since 1997? If so, could 
> you 
> give details about the changes to the Debian algorithm? Perhaps glibc should 
> be 
> changed to stay consistent with Debian.

Debian introduced a special (and very useful) meaning for ~, many
years ago now.

I checked the Debian policy manual and according to its upgrading
checklist this change was made in 2007.

Ian.

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