Another update, I modified std.pdf.class.inc so that it doesn't split the filename if it's an image:
if ($celldata['fieldspec']['subtype']!='image'){
if ($this->GetStringWidth($line) > $cell_width-2.25 ) {
// this line is too long for current cell
if ($last_split > 0) {
// truncate current line at last split character
if ($char == '_') {
$split_point = $ix - $last_split +1;
} else {
$split_point = $ix - $last_split;
} // if
$line = substr($line, 0, strlen($line) - $split_point);
if ($char == '_') {
$ix = $last_split -1;
} else {
$ix = $last_split;
} // f
} // if
$celldata['line_array'][] = trim($line);
$line = '';
$last_split = 0;
} // if
}
OTOH, I added this code:
on line 1048 of the same file to hide the image name.