Background color spaning columns.

[Bart Wise <bntgcontext@wiseguysweb.com>]

I am trying change the background color of some text.  It works fine if I am 
using one column.  It also works fine if I am using multiple columns, but 
restricting my background color changes to only a single line of text in a 
column.  

However, if I have a section that I want to I change, and that section spans 
more than one line in a given column it does not work.  What happens is that 
the background starts to change where you have indicated; however, instead of 
stopping at the end of the column, the background color changes for the 
entire text.  See the subject entitled "Problem 1" below for an example.  Is 
there a fix for this (and no, using a single column is not a solution.)

Problem #2 is the same thing only the background change starts in the first 
column and extends to the second.  In this case the output is even worse.  
It's difficult to describe, so run the code.

Solutions?

Thanks,
Bart

*******************************
* Sample Code --- #1
*******************************
\setupcolors[state=start]
\definetextbackground[highlight][
        backgroundcolor=yellow,
        frame=off,
        location=text,
        color=black]
\definestartstop[Highlight][
    before={\starttextbackground[highlight]},
    after=\stoptextbackground]

\starttext
\subject{Problem 1}
\startcolumns
It was a·
\starthighlight dark·
and stormy night;  the rain fell in torrents --- except at
occasional intervals, when it was checked by a·
violent\stoptextbackground~
gust of wind which swept
up the streets (for it is in London that our scene lies), rattling along the
housetops, and fiercely agitating the scanty flame of the lamps that struggled
against the darkness.
\stopcolumns

\subject{Problem 2}
\startcolumns
It was a dark and stormy night;  the rain fell in torrents --- except at
occasional intervals, when it was checked by a violent gust of wind which·
\starthighlight·
swept up the streets (for it is in London that our scene lies), rattling along
the housetops, and fiercely agitating the scanty flame
\stophighlight
of the lamps that struggled
against the darkness.
\stopcolumns

\stoptext
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