[PATCH] aiaiai-email-lda: use the References mail header

[Artem Bityutskiy]

On Thu, 2014-11-20 at 11:40 +0200, Artem Bityutskiy wrote:
> On Fri, 2014-11-07 at 21:49 +0100, Robert Jarzmik wrote:
> > Robert Jarzmik <robert.jarzmik at free.fr> writes:
> > 
> > > Artem Bityutskiy <dedekind1 at gmail.com> writes:
> > > Well, I tried, this doesn't work anymore. The mail reason I think is that for
> > > each sentence such as :
> > > to="$(formail -c -z -x "To:" < $mail)"
> > >                                 \-> here $mail is actually quoted I think.
> > Actually if I understand correctly the man page:
> > Command Substitution:
> >         If the substitution appears within double quotes, word splitting and
> >         pathname expansion are not performed on the results.
> > 
> > That would mean $mail doesn't need quoting.
> 
> The $(blah) construct calls the subshell. Think about it as calling
> another shell which runs 'blah'. The quotes around "$()" do not
> "penetrate" to the sub-shell.

Of course $(blah) is optimized and it does not create another shell
process. But it works as if a separate shell process was executed. So
your outer quotes apply to the _result_ of "blah".

Artem.