Re: RFC: add a string-desc module

[Bruno Haible]

Paul Eggert wrote:
> > I'll add a comment regarding printf with the "%.*s" directive.
> 
> That works only if the string lacks NULs

Ouch, indeed.

> and its length fits into int, 
> and one must also convert the idx_t length to int (e.g., via a cast 
> which I find tricky).

I've now documented that "%.*s" is NOT the solution.

> Although these limitations could be documented, it 
> might also be good to have an API like quotearg to generate a quoted or 
> quotable string that can be printed with plain %s.

Good point. I've added wrappers around the quotearg functions. Fortunately,
most of the quotearg functions already have a *_mem variant that was designed
precisely for this case.

Bruno