Re: [PATCH 1/4] add strbuf_expand_dict_cb(), a helper for simple cases

> The new callback function strbuf_expand_dict_cb() can be used together
> with strbuf_expand() if there is only a small number of placeholders
> for static replacement texts.  It expects its dictionary as an array of
> placeholder+value pairs as context parameter, terminated by an entry
> with the placeholder member set to NULL.
> 
> The new helper is intended to aid converting the remaining calls of
> interpolate().  strbuf_expand() is smaller, more flexible and can be
> used to go faster than interpolate(), so it should replace the latter.
> 
> Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
> ---