[r6rs-discuss] [Formal] allow variable-length strings

[Jeff Read]

On 3/21/07, Jon Wilson <j85wilson at fastmail.fm> wrote:

> Is there any reason to return the unspecified value as opposed to
> returning str1 (post-modification)?  It seems that returning str1 would
> be more useful to a functional programming style.  Additionally, this
> would make it a drop-in replacement for the existing string-append, in
> cases where modification of str1 is not harmful.
>
> Additionally, in analogy to the existing string-append, I would move for
> string-append! to take many args rather than just 2, modify the first
> one to become the concatenation of all of them, and then return the
> first one (modified).

Seconded. Your approach also makes `string-append!' more analogous to
`append!' (in those Schemes which implement it; and also SRFI-1).

--Jeff