Re: [PATCH v4] tag: support --sort=<spec>

[Jeff King <peff@peff.net>]

On Thu, Feb 27, 2014 at 07:56:52PM +0700, Nguyễn Thái Ngọc Duy wrote:

> --sort=version:refname (or --sort=v:refname for short) sorts tags as
> if they are versions. --sort=-refname reverses the order (with or
> without ":version").
> 
> versioncmp() is copied from string/strverscmp.c in glibc commit
> ee9247c38a8def24a59eb5cfb7196a98bef8cfdc, reformatted to Git coding
> style. The implementation is under LGPL-2.1 and according to [1] I can
> relicense it to GPLv2.

This looks good to me. One minor typo:

> diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
> index 404257d..9b05931 100644
> --- a/Documentation/git-tag.txt
> +++ b/Documentation/git-tag.txt
> @@ -95,6 +95,12 @@ OPTIONS
>  	using fnmatch(3)).  Multiple patterns may be given; if any of
>  	them matches, the tag is shown.
>  
> +--sort=<type>::
> +	Sort in a specific order. Supported type is "refname"
> +	(lexicographic order), "version:refname" or "v:refname" (tags
> +	name are treated as versions). Prepend "-" to reverse sort

s/tags name/tag names/

You had mentioned earlier tweaking the version comparison to handle
things like -rc better. I think that can come on top of this initial
patch, but we should probably figure out the final sort order before
including this in a release.

-Peff