Re: [patch] libjava: avoid using escape sequence with undefined behaviour in echo

[Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>]

> > > I do think requiring a POSIX-compliant shell is reasonable.
> >
> > POSIX compliance wouldn't help much here, since it makes the issue
> > implementation-defined.  A better alternative might be to use printf
> > instead.
>
> Agreed; I failed to verify the original claim that ash was non-compliant
> in this regard.

I'm sorry for having put out a false claim.  I should have read the 
standard.  However, this undefined behavior apparently rules out ash 
from running configure

    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
          /^X\(\/\/\)[^/].*/{ s//\1/; q; }
          /^X\(\/\/\)$/{ s//\1/; q; }
          /^X\(\/\).*/{ s//\1/; q; }
          s/.*/./; q'

(no I don't want to know what this does).

Why do you want to allow it for make?

Paolo