my $info = $glyphs->glyph_info($cp);
my ($class, $name, $mnem, $html, $string) = @{$info};
my $np = $class =~ /\bC\S\b/; # noprint if control or invalid
+ # display literal character, with placeholder circle if non-spacing/enclosing
+ my $html = ($class =~ /\bM[ne]\b/ && chr 9676) . EscapeHTML(chr $cp);
say sprintf '<td class="%s" title="U+%04X%s">%s',
!$class ? ('l0', $cp, '', '') :
$cover{$cp} ? $np ? 'l2' : 'l5' : $np ? 'Xi' : 'l1',
$cp, !!$name && ": $name",
- ($cover{$cp} || !$np) && EscapeHTML(chr $cp);
+ ($cover{$cp} || !$np) && $html;
}
say '</table>';