How to add separator between paragraphs (or minipages) on the same page?

Question

I am trying to typeset a list of quotations in the following way:

1. No quotation is split across pages.
2. Between adjacent quotations on the same page, there is a separator (such as a fleuron or horizontal rule).

Note that, in particular, I do not want a rule after the last quotation on a given page.

I'd like to create a command that outputs a quotation and adds a rule only if a quotation follows (or precedes) it. How could I go about this?

Answer 1

The rule used in \leaders:

\leaders \hrule \vskip.4pt

is removable like another space on the page breaks. You can define somethig like this:

\raggedbottom
\newcount\quotnumber
\def\quotation{\par\global\advance\quotnumber by1
   \bigskip
   \ifnum\qoutnumber>1 \leaders \hrule \vskip.4pt \bigskip \fi
   \vbox
}

The introduction text.
\quotation{text of first quotation}
\quotation{text of second quotation}
etc.
\bye

The removable rule is placed before \vbox with quotation because we needn't to have the rule after the last quotation. The test "if it is the first quotation" is used because we needn't the rule between introduction text and the first quotation.