Re: [PATCH v3 3/3] rebase: add a config option for --rebase-merges

> +rebase.merges::
> +	Whether and how to set the `--rebase-merges` option by default. Can
> +	be `rebase-cousins`, `no-rebase-cousins`, or a boolean. Setting to
> +	true is equivalent to `--rebase-merges` without an argument, setting to
> +	`rebase-cousins` or `no-rebase-cousins` is equivalent to
> +	`--rebase-merges` with that value as its argument, and setting to false
> +	is equivalent to `--no-rebase-merges`. Passing `--rebase-merges` on the
> +	command line without an argument overrides a `rebase.merges=false`
> +	configuration but does not override other values of `rebase.merge`.

> +static void parse_merges_value(struct rebase_options *options, const char *value)
> +{
> +	if (value) {
> +		if (!strcmp("no-rebase-cousins", value))
> +			options->rebase_cousins = 0;
> +		else if (!strcmp("rebase-cousins", value))
> +			options->rebase_cousins = 1;
> +		else
> +			die(_("Unknown mode: %s"), value);
> +	}
> +
> +	options->rebase_merges = 1;
> +}

> @@ -815,6 +829,13 @@ static int rebase_config(const char *var, const char *value, void *data)
>  		return 0;
>  	}
>  
> +	if (!strcmp(var, "rebase.merges") && value && *value) {
> +		opts->rebase_merges = git_parse_maybe_bool(value);
> +		if (opts->rebase_merges < 0)
> +			parse_merges_value(opts, value);
> +		return 0;
> +	}