Re: [PATCH] branch: support configuring --sort via .gitconfig

> From: Samuel Maftoul <samuel.maftoul@gmail.com>
>
> Add support for configuring default sort ordering for git branches. Command
> line option will override this configured value, using the exact same
> syntax.

> Signed-off-by: Samuel Maftoul <samuel.maftoul@gmail.com>
> ---
>  Documentation/config.txt     |  6 +++++
>  Documentation/git-branch.txt |  5 ++--
>  builtin/branch.c             | 10 +++++++-
>  t/t3200-branch.sh            | 46 ++++++++++++++++++++++++++++++++++++
>  4 files changed, 64 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/config.txt b/Documentation/config.txt
> index fd8d27e76..7f7a50123 100644
> --- a/Documentation/config.txt
> +++ b/Documentation/config.txt
> @@ -1039,6 +1039,12 @@ branch.autoSetupRebase::
>  	branch to track another branch.
>  	This option defaults to never.
>  
> +branch.sort::
> +	This variable controls the sort ordering of branches when displayed by
> +	linkgit:git-branch[1]. Without the "--sort=<value>" option provided, the
> +	value of this variable will be used as the default.
> +	See linkgit:git-for-each-ref[1] field names for valid values.

> diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
> index 1072ca0eb..9767b2b48 100644
> --- a/Documentation/git-branch.txt
> +++ b/Documentation/git-branch.txt
> @@ -268,10 +268,11 @@ start-point is either a local or remote-tracking branch.
>  	order of the value. You may use the --sort=<key> option
>  	multiple times, in which case the last key becomes the primary
>  	key. The keys supported are the same as those in `git
> -	for-each-ref`. Sort order defaults to sorting based on the
> +	for-each-ref`. Sort order defaults to the value configured for the
> +	`branch.sort` variable if exists, or to sorting based on the
>  	full refname (including `refs/...` prefix). This lists
>  	detached HEAD (if present) first, then local branches and
> -	finally remote-tracking branches.
> +	finally remote-tracking branches. See linkgit:git-config[1].

> diff --git a/builtin/branch.c b/builtin/branch.c
> index 4fc55c350..bbd006aab 100644
> --- a/builtin/branch.c
> +++ b/builtin/branch.c
> @@ -74,6 +74,14 @@ define_list_config_array(color_branch_slots);
>  static int git_branch_config(const char *var, const char *value, void *cb)
>  {
>  	const char *slot_name;
> +	struct ref_sorting **sorting_tail = (struct ref_sorting **)cb;
> +
> +	if (!strcmp(var, "branch.sort")) {
> +		if (!value)
> +			return config_error_nonbool(var);
> +		parse_ref_sorting(sorting_tail, value);
> +		return 0;
> +	}