Re: url's in --help output

[Karl Berry]

    It's a one-character addition (plus a gnulib module) to use xprintf
    everywhere you used to use printf

Sure.  But virtually every program, GNU or otherwise, uses printf.
Before we change/recommend changing all the source files in the world,
my question is, do the common implementations such as glibc do the wrong
thing (i.e., fail to set the error indicator)?  From what I saw on the
threads, it was one obscure and nonfree implementation that instigated
the whole issue.  Or did I misread?