Re: [xml] newline/form feed valid as attribute value?

[Dan Shelton <dan f shelton gmail com>]

On 1 July 2012 17:06, Dan Shelton <dan f shelton gmail com> wrote:
> In which context are newlines valid values, i.e. is a newline
> character or a form feed a valid character in an attribute value?

Clarifying the question:
Is this a valid xml fragment:
-----cut-----
<mytag myattribute="hello
 world">sometext</mytag>
-----cut-----
Or as UNIX(TM) shell code:
/usr/bin/printf '/<mytag myattribute="hello \n world">sometext</mytag>'

Same with form feed:
/usr/bin/printf '/<mytag myattribute="hello \f world">sometext</mytag>'
Is this valid?

Or with vertical feed:
/usr/bin/printf '/<mytag myattribute="hello \v world">sometext</mytag>'
Is this valid?