On 6/23/2021 18:10, Hans Hagen wrote:
> On 6/22/2021 4:52 AM, Rik Kabel wrote:
>> [...]ome an alternative way to do that.)
> I'll send you a possible fix but it needs a bit of testing. It has to 
> do with (probably spurious) spaces which means that the parbuilder 
> then considers the dir node to be a reasoable breakpoint (well, kin 
> dof okay as one gets what one asks for), but I'll be a bit more 
> agressive in dealing with that.
>
> Hans
>
Thank you, Hans, for looking into this so soon.

I did try what you sent, but see no difference. I have eliminated the 
changes to spaceskip as a cause and simplified the example, removing the 
spaceskip and delimitedtext.

New example, in which I get a spurious line after the third and fourth 
Walt Kelly entries:

    %% Demonstration of spurious line insertion on full paragraph with bidi

    \setupdirections     [bidi=on,method=unicode]

    \enabletrackers      [typesetters.directions]
    %\showmakeup          [glue,dir]

    \definepapersize     [Testing]
                          [width=6.69in]
    \setuppapersize      [Testing]

    \setuplayout         [width=fit,
                           backspace=1.4in,
                           cutspace=1in,
                           leftmargin=0.65in,
                           rightmargin=0.65in]

    \setupwhitespace     [small]


    \setupbodyfont       [libertinus,11pt]

    \startbuffer[Test]
         Kelly, Cynthia C., ed. 2005. {\em Oppenheimer and the Manhattan
         Project: Insights into J.~Robert Oppenheimer, ‘Father of the
         Atomic Bomb’}. Singapore: World Scientific.

         Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY Simon
         & Schuster.

         Kelly, Walt. 1953. {\em The Pogo Papers}. New York NY Simon
         & Schuster.

         Kelly, Walt. 1953. {\em The Pogo Papers}. New York, NY: Simon
         & Schuster.

         Kelly, Walt. 1953. {\em The Pogo Papers}. New York,, NY: Simon
         & Schuster.

         Kelly, Walt. 1953. {\em The Pogo Papers}. New York; NY Simon
         & Schuster.

         Kuhn, Thomas S. 1962. {\em The Structure of Scientific
         Revolutions}. Chicago, IL: University of Chicago Press.

         Weinreich, Max. 1945. “Der YIVO un di problemen fun undzer
         tsayt (דער ייִוואָ און די פּראָבלעמען פֿון אונדזער צײַט).”
         {\em YIVO Bleter} 25 (1): 3--18. The title is translated as
         {\em The YIVO and the problems of our time}, and also as
         {\em The YIVO faces the post-war world}.

    \stopbuffer

    \starttext

       \getbuffer[Test]

    \stoptext

-- 
Rik