On Fri, 28 Mar 2014, Stéphane Goujet wrote:

>  I am trying to typeset old books and I chose to keep close to the
> original typography.
> =================
> 1) It must work when starting from a new line as well as when starting
> from the middle of the current line. 2 different environments are
> allowed.
>
> 2) The environnement is wrapped in guillemets.
>
> 3a) There must be no extra space before the opening guillemet when
> starting from the middle of the current line.
>
> 3b) The must be no extra space after the closing guillemet.
>
> 4) The quote repetition symbol must appear in the beginning of every
> line, except the first one.
>
> 5) Paragraphs should be automatically indented. Manual indentation is
> bearable.
>
> 6a) When there is an indentation, the quote repetition symbol must be
> indented too.
>
> 6b) When the bloc starts on a new line, the opening guillemet must be
> indented.
>
> 7) The quote repetition symbol must be a setup parameter of the
> environment, or easily modifiable within the environment definition.
> (in the example images, it is a *closing* guillemet, but in other books
> it can be an *opening* guillemet).
>
> 8) This environment must work within footnotes too.
> =================

   I just fortuitously learned on Luatex mailing list that it only took 
this command : \localleftbox{}

   So, the quotation block would be :

================
\define\qbopen{«}
\define\qbrep{»}
\define\qbclose{»}
\definestartstop
    [bloccite]
    [before=\qbopen~\begingroup\localleftbox{\qbrep~},
     after=\endgroup~\qbclose]
================

   Might need a bit of kerning to have all spaces look good, but basically, 
this is it. Just this...


Goodbye,
   Stéphane Goujet.