base-files: modify kernel listing in vkpurge

[Ypnose]

By default, kernel listing is not done by version. For example :

4.19.131_1
5.4.18_1
5.4.50_1
5.4.5_1
5.4.9_1
5.4.11_1

Using 'version-sort' option, it shows older versions before recent versions :

4.19.131_1
5.4.5_1
5.4.9_1
5.4.11_1
5.4.18_1
5.4.50_1

[ahesford]

Please rebase, base-files has already been revbumped.

[Ypnose]

I did that pull request using web interface. You can directly rebase when you accept the pull request :
https://github.blog/2016-09-26-rebase-and-merge-pull-requests/

[q66]

version sort is not standard in POSIX, so this might break depending on which implementation of sort people are using

[sgn]

It seems like I messed up again.

[q66]

it's probably fine, as the common implementations have it (gnu sort, busybox sort, freebsd sort), just pointing out that this is not POSIX

[Ypnose]

On Void Linux, sort is provided by GNU coreutils. I assume people will use this variant. The idea here is not to support every sort implementation. Even OpenBSD which is known to be restrictive, supports this option. I do not understand how your comment helps us here. If Void Linux needs to stick to POSIX which is totally fine, please provide me a link where it is specified. In that case, this PR can be ignored.

[Ypnose]

@sgn May I know why this pull request was closed and therefore refused ?

[ahesford]

The pull request was closed by merging your change (with the revbump).

[sgn]

On 2020-08-24 09:50:59-0700, Ypnose ***@***.***> wrote: @sgn May I know why this pull request was closed and therefore refused ?

It's merged, but not with the button: 7bffaa5

[Ypnose]

My apologies, I didn't notice.