Re: [PATCH] color.h: document and modernize header

> Add documentation explaining the functions in color.h.
> While at it, migrate the function `color_set` into grep.c,
> where the only callers are.
>
> Signed-off-by: Stefan Beller <sbeller@google.com>
> ---
> diff --git a/color.h b/color.h
> @@ -76,22 +76,46 @@ int git_color_config(const char *var, const char *value, void *cb);
> +/*
> + * Output the formatted string in the specified color (and then reset to normal
> + * color so subsequent output is uncolored). Omits the color encapsulation if
> + * `color` is NULL. The `color_fprintf_ln` prints a new line after resetting
> + * the color.  BUG: The `color_print_strbuf` prints the given pre-formatted
> + * strbuf instead, up to its first NUL character.
> + */