Re: doc improvements

[Ralf Wildenhues]

Hi Eric,

* Eric Blake wrote on Tue, Dec 29, 2009 at 11:03:17PM CET:
> I will probably push these shortly.  One is a bad comment in configure files, 
> another is related to this thread:
> http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20074
> 
> It turns out that the set size issue is already mentioned in POSIX:
> "When the −d option is not specified: ...When the array specified by string2 
> is 
> shorter that the one specified by string1, the results are unspecified."

Thanks for analyzing the issue, and documenting it again.

> +When providing two arguments, be sure the second string is at least as
> +long as the first.
> +
> +...@example
> +$ @kbd{echo abc | /usr/xpg4/bin/tr bc d}
> +adc
> +$ @kbd{echo abc | tr bc d}
> +add

Is it clear which tr is invoked here?

Thanks,
Ralf