Re: [PATCH 1/7] Rework strbuf API and semantics.

> The gory details are explained in strbuf.h. The change of semantics this
> patch enforces is that the embeded buffer has always a '\0' character after
> its last byte, to always make it a C-string. The offs-by-one changes are all
> related to that very change.
> 
>   A strbuf can be used to store byte arrays, or as an extended string
> library. The `buf' member can be passed to any C legacy string function,
> because strbuf operations always ensure there is a terminating \0 at the end
> of the buffer, not accounted in the `len' field of the structure.
> 
>   A strbuf can be used to generate a string/buffer whose final size is not
> really known, and then "strbuf_detach" can be used to get the built buffer,
> and keep the wrapping "strbuf" structure usable for further work again.
> 
>   Other interesting feature: strbuf_grow(sb, size) ensure that there is
> enough allocated space in `sb' to put `size' new octets of data in the
> buffer. It helps avoiding reallocating data for nothing when the problem the
> strbuf helps to solve has a known typical size.