On Tuesday 17 of September 2013 12:50:07 erik quanstrom wrote:
> On Tue Sep 17 10:04:20 EDT 2013, [email protected] wrote:
> > Quoting dexen deVries <[email protected]>:
> > > awk(1) says, ``[s]tring constants are quoted " ", with the usual C
> > > escapes
> > > recognized within.'', but \0 seems to terminate internal string
> > > reprezentation...
> > >
> > > so how do i output a real NUL byte?
> >
> > Does printf not do this?
>
> no, awk's printf does not do that:
> minooka; awk 'BEGIN{printf "%c", utf(0)}' | wc
> 0 0 0
> minooka; awk 'BEGIN{printf "%.5s", "12\034567890"}' | xd -1
> 0000000 31 32 1c 35 36
> minooka; awk 'BEGIN{printf "%.5s", "12\0\034567890"}' | xd -1
> 0000000 31 32
utf() is the problem, %c expect int, not string:
9 awk ' BEGIN { printf "%c", 0 } ' | 9 wc
0 1 1
9 awk ' BEGIN { printf "X%cX", 0 } ' | 9 xd
0000000 58005800
--
dx
