adding lineno implementation

[daggs]

Greetings Denys,

> On Mon, Feb 12, 2018 at 4:38 PM, daggs <daggs at gmx.com> wrote:
> > Greetings Denys,
> >
> > here is another test case that goes bad"
> > cat -n test.sh
> >      1  #!/bin/bash
> >      2
> >      3  echo "E${LINENO}"
> >      4  echo "$(readlink -f /proc/self/fd/2)" > /tmp/fd.old
> >      5  echo "E${LINENO}"
> >      6  exec 2>> /tmp/err.txt
> >      7  echo "E${LINENO}"
> > ./test.sh
> > E3
> > E6
> > E8
> 
> Thanks, fixed in git
> 

thanks! for now all works great.

thanks again for the hard work.

Dagg.