[tex-eplain] column breaks in eplain

[James Mckernon]

Hi all,

I'm new to TeX and experimenting with eplain's columns feature, but I
don't seem to be able to get column breaks to work as expected. An
example:

\input eplain
\hsize 188mm \vsize 188mm
\hoffset 5mm \voffset 5mm
\nopagenumbers
\doublecolumns
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad
minim veniam, quis nostrud exercitation ullamco laboris nisi ut
aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
\columnfill
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad
minim veniam, quis nostrud exercitation ullamco laboris nisi ut
aliquip ex ea commodo consequat. Duis aute irure dolor in
reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
\hrule
\bye

I would expect the two lorem ipsum paragraphs to be side-by-side, in
the two columns on the first page. Instead, the last line of the first
column gets forced into the top of the second column, which seems to
force the second paragraph onto the next page. This doesn't seem
specific to this example - however I try, \columnfill seems to pull
the last line of the paragraph into the next column.

Any advice for how to fix this?

Gratefully,
J