[l2h] images generated for math have black bar at bottom

[Berna Massingill]

On Tue, Jan 09, 2018 at 06:18:13PM -0600, Berna Massingill wrote:
>>  
>>  (Top-posting because my reply is brief.)
>>  
>>  The change you suggest to l2hconf.pm did the trick.  I'm embarrassed
>>  to admit that once I thought to look at this file in the previous,
>>  working version, well, this change was there too -- presumably why
>>  it worked! -- but somehow didn't get propagated with other local
>>  modifications to the new version.  Well, fixed now, and maybe I'll
>>  remember next time!

Following up because I've tripped over the same problem in installing
a 2018 version of latex2html:

To recap, the problem turned out to be that l2hconf.pm had this line:

$DVIPSOPT = ' -Ppdf  -E';

instead of this line:

$DVIPSOPT = ' -E';

I wondered how I had missed copying this configuration tweak when
I copied over the others, but I think I understand now how that 
happened:  

l2hconf.pm is apparently generated from l2hconf.pin, and for the
other configuration tweaks I modified l2hconf.pin, and these tweaks
were carried over to the generated l2hconf.pm.  But the tweak for
DVIPSOPT ....  I haven't tried to dig into code and figure out how
the line for DVIPSOPT in l2hconf.pm is generated, but it seems to
be put together from various lines in l2hconf.pin, and here are
the ones that seem to me to be relevant:

$DVIPSOPT = '@DVIPSOPT@';
# $DVIPSOPT .= ' -M';
 $DVIPSOPT .= " -E";
# $DVIPSOPT .= " -r0";
# $DVIPSOPT .= " -Ppdf";
#  $DVIPSOPT .= " -Pgs";

What I don't understand is how l2hconf.pm can end up as it does 
(with -E and -Ppdf, but none of the other flags).  

Maybe it doesn't really matter since I seem to have a workaround,
but still, I find this puzzling and would be glad of an explanation!

-- blm



>>  
>>  Many thanks!
>>  
>>  -- blm
>>  
>>  
>>  On Mon, Jan 08, 2018 at 07:48:01PM -0600, Nasser M. Abbasi wrote:
>>  >>  On 1/8/2018 7:42 PM, Berna Massingill wrote:
>>  >>  >Subject kind of says it:  The images generated for inline math
>>  >>  >have a black bar across the bottom of each image file.  This is
>>  >>  >with the latest version of latex2html available from CTAN (file
>>  >>  >latex2html-2017.2.tar.gz).  The problem does not occur with a previous
>>  >>  >version (also from CTAN, file latex2html-2012.tgz).  I remember running
>>  >>  >into this problem at some point in the dim past and someone local to
>>  >>  >me coming up with a patch, but that patch has apparently been lost.
>>  >>  >
>>  >>  >I feel like this is a know problem and is discussed periodically,
>>  >>  >but I'm not finding previous discussions (very possibly because I
>>  >>  >don't know how to search for them effectively -- the list archives
>>  >>  >aren't searchable, are they?).
>>  >>  >
>>  >>  >Help appreciated!
>>  >>  >
>>  >>  
>>  >>  From https://www.12000.org/my_notes/l2hwin/index.htm   it says
>>  >>  down the page under "Some errors and possible solution"
>>  >>  
>>  >>  "some of the bitmap images produced for the mathematics
>>  >>  in the document have a solid dark bar, usually at the
>>  >>  bottom or the side of the bitmap image. The reason for
>>  >>  this is unknown. But I found by trial and error that
>>  >>  setting the following values in my l2hconf.pm eliminated
>>  >>  most if not all of these
>>  >>  
>>  >>    $MATH_SCALE_FACTOR = 1.8;
>>  >>    $DISP_SCALE_FACTOR = 1.0;
>>  >>  
>>  >>  Some mathematics equations are still underlined, even
>>  >>  after doing the above. I found this was the case when I
>>  >>  was using linux. If you still see the underlines, then
>>  >>  try the following: edit l2hconf.pm and set the value of DVIPSOPT as follows
>>  >>             $DVIPSOPT = '-E' ;
>>  >>  
>>  >>  "
>>  >>  
>>  >>  You could try the above and see if it works for you.
>>  >>  
>>  >>  --Nasser
>>  >>  _______________________________________________
>>  >>  latex2html mailing list
>>  >>  latex2html at tug.org
>>  >>  http://tug.org/mailman/listinfo/latex2html
>>  
>>  -- 
>>  -----------------------------------------------------------------
>>  Dr. Berna L. Massingill
>>  Associate Professor, Computer Science
>>  Trinity University
>>  One Trinity Place; San Antonio, TX 78212-7200
>>  210-999-8138
>>  bmassing at cs.trinity.edu
>>  -----------------------------------------------------------------
>>  _______________________________________________
>>  latex2html mailing list
>>  latex2html at tug.org
>>  http://tug.org/mailman/listinfo/latex2html

-- 
-----------------------------------------------------------------
Dr. Berna L. Massingill
Associate Professor, Computer Science
Trinity University
One Trinity Place; San Antonio, TX 78212-7200
210-999-8138
bmassing at cs.trinity.edu
-----------------------------------------------------------------