charset: code constants in hexadecimal where appropriate
[sheet.git] / charset.plp
index 5e500047d48d8c685598a3ff7b798a65ff8d8093..7e115a87581dee89111a7fc7bd5ae61f244eae37 100644 (file)
@@ -12,7 +12,7 @@ Html({
                reference common overview table
        '],
        stylesheet => [qw'light'],
-       data => [qw'charset-unicode.inc.pl charset-utf8.inc.pl'],
+       data => [qw'charset-unicode.inc.pl charset-ucplanes.inc.pl charset-utf8.inc.pl'],
 });
 
 my @tablist = split m{/+}, $Request || 'default';
@@ -43,14 +43,16 @@ sub optionlink {
 print join " •\n", (
        map {
                join " ·\n", pairmap {
-                       optionlink($b || ucfirst $a, "/charset/$a?compare", $a eq $Request);
+                       optionlink($b || ucfirst $a, '/charset'.($a && "/$a?compare"), $a eq $Request);
                } @{$_}
        }
        [
                iso      => 'ISO',
+               win      => 'Windows',
                dos      => 'DOS',
                mac      => 'Apple',
                ebcdic   => 'EBCDIC',
+               $tablist[0] eq 'default' ? () : ('' => 'common'),
        ],
        [
                westeur  => 'West',
@@ -61,7 +63,6 @@ print join " •\n", (
                cyrillic => 0,
                hebrew   => 0,
        ],
-       [ uc => 'Unicode' ],
 );
 :>.
 </p>
@@ -77,8 +78,8 @@ sub tabinput {
        my $input = shift or return;
 
        state $ALIAS = {
-               default    => [qw( unicode+0-639 utf-8+realsize iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
-               uc         => [qw( U+cols=32 unicode+0-4095 unicode+4096-6319  unicode+6320-8191 )],
+               default    => [qw( u+0-27F utf-8+realsize iso-8859-1 iso-8859-15 cp1252 cp437 cp850 )],
+               unicode    => [qw( uu+cols=32+realsize u+0-FFF u+1000-18AF u+18B0-1FFF )],
                us         => [qw( cp437 cp863 gsm0338 AdobeStandardEncoding )],
                ebcdic     => [qw( cp37 cp500 cp1047 posix-bc cp1026 cp875 )],
                iso        => [map {"iso-8859-$_"} 1 .. 11, 13 .. 16],
@@ -97,14 +98,14 @@ sub tabinput {
                baltic     => [qw( iso-8859-4 iso-8859-13 cp1257 cp775 )],
                nordic     => [qw( iso-8859-10 cp865 cp861 MacIcelandic MacSami )],
                cyrillic   => [qw( koi8-r koi8-u koi8-f iso-8859-5 cp1251 MacCyrillic cp866 cp855
-                                  U4 U2DE-2DF UA64-A69 U50-52 )], # MacUkrainian is broken
+                                  +400 +2DE0 +A640-A69F +500-52F )], # MacUkrainian is broken
                arabic     => [qw( iso-8859-6 cp1256 MacArabic cp864 cp1006 MacFarsi
-                                  U6 U8A-8F+0-31+64 U75-77 )],
-               greek      => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869  U37-3F U1F )],
-               hebrew     => [qw( iso-8859-8 cp1255 MacHebrew cp862  U59-5F )],
+                                  +600 +8A0-8BF+8E0 +750-77F )],
+               greek      => [qw( iso-8859-7 cp1253 MacGreek cp737 cp869  +370 +1F00 )],
+               hebrew     => [qw( iso-8859-8 cp1255 MacHebrew cp862  +590 )],
                thai       => [qw( iso-8859-11 cp874 MacThai )],
                vietnamese => [qw( viscii cp1258 MacVietnamese )],
-               symbol     => [qw( symbol dingbats MacDingbats AdobeZdingbat AdobeSymbol )],
+               symbols    => [qw( symbol dingbats MacDingbats wingdings wingdings2 wingdings3 webdings )],
 
                # iso-code shorthand
                1 => 'westeur',
@@ -124,80 +125,90 @@ sub tabinput {
                return;
        }
 
-       state $visible = {};  # all present tables
+       state $visible = {'' => 1};  # all present tables
        my %row = (offset => 0, cols => 16);
        my $params = $input =~ s/[+](.*)\z// ? $1 : undef;
 
        if (not defined $params) {
                state $INHERIT = {
-                       'cp437'       => ['cp850' => 0, 'ascii' => '0-31+128'], # ascii range overridden later
-                       'gsm0338'     => ['ascii' => '0-127'],
-
-                       'iso-8859-2'  => ['iso-8859-1' => '160'],
-                       'iso-8859-3'  => ['iso-8859-1' => '160'], #TODO: also apply to iso-8859-9
-                       'iso-8859-4'  => ['iso-8859-2' => '160'],
-                       'iso-8859-5'  => ['iso-8859-1' => '160'],
-                       'iso-8859-6'  => ['cp1256' => '128', 'iso-8859-1' => '160'],
-                       'iso-8859-7'  => ['iso-8859-1' => '160'],
-                       'iso-8859-8'  => ['iso-8859-1' => '160'],
-                       'iso-8859-9'  => ['iso-8859-1' => '208-223+240'],
-                       'iso-8859-10' => ['iso-8859-4' => '160'],
-                       'iso-8859-11' => ['iso-8859-1' => '160'],
-                       'iso-8859-13' => ['iso-8859-4' => '160'],
-                       'iso-8859-14' => ['iso-8859-1' => '160'],
-                       'iso-8859-15' => ['iso-8859-1' => '160-191'],
-                       'iso-8859-16' => ['iso-8859-2' => '160'],
-                       'hp-roman8'   => ['iso-8859-1' => '160'],
-
-                       'cp1252'      => ['iso-8859-1' => '128-159'],
-                       'cp1250'      => ['iso-8859-2' => '128-191', 'cp1252' => '128'],
-                       'cp1254'      => ['iso-8859-9' => '128-159', 'cp1252' => '128-159+208'],
-                       'cp874'       => ['iso-8859-11' => '128-159', 'cp1252' => '128'], # windows-874 actually cp1162
-                       'cp1257'      => ['iso-8859-13' => '128-159+255', 'cp1252' => '128'],
-                       'cp1251'      => ['cp1252' => '128'],
-                       'cp1253'      => ['cp1252' => '128'],
-                       'cp1255'      => ['iso-8859-8' => '128-223', 'cp1252' => '128'],
-                       'cp1256'      => ['cp1252' => '128'],
-                       'cp1258'      => ['cp1252' => '128-159+192'],
-
-                       'cp850'       => ['cp437' => '144'],
-                       'cp860'       => ['cp437' => '128-175'],
-                       'cp861'       => ['cp865' => '128-175'],
-                       'cp863'       => ['cp437' => '128-175'],
-                       'cp865'       => ['cp437' => '144-175'],
-                       'cp852'       => ['cp850' => '128', 'cp437' => '128'],
-                       'cp857'       => ['cp850' => '128-175+208-239', 'cp437' => '128'],
-                       'cp775'       => ['cp850' => '128'],  # partial cp437
-                       'cp866'       => ['cp437' => '128-175+224'],
-                       'cp855'       => ['cp437' => '128'],
-                       'cp1006'      => ['iso-8859-6' => '160', 'cp437' => '128'],
-                       'cp737'       => ['cp437' => '128-175+224'],
-                       'cp869'       => ['cp437' => '128'],
-                       'cp862'       => ['cp437' => '128-159'],
-                       'cp864'       => ['MacArabic' => '128', 'iso-8859-6' => '128', 'cp437' => '128'], #TODO: compare form variants
-
-                       'koi8-u'      => ['koi8-r' => '144-191'],
-                       'koi8-f'      => ['koi8-u' => '144-191'],
-
-                       'MacRomanian' => ['MacRoman' => '160-191+208-223'],
-                       'MacRumanian' => ['MacRomanian' => '160-191+208-223', 'MacRoman' => '160-191+208-223'],
-                       'MacCroatian' => ['MacRoman' => '160'],
-                       'MacCentralEurRoman' => ['MacRoman' => '128'],
-                       'MacIcelandic'=> ['MacRoman' => '160-175+208-239'],
-                       'MacTurkish'  => ['MacRoman' => '208-223'], # F5 is unassigned
-                       'MacSami'     => ['MacIcelandic' => '144-191+208-223+240', 'MacRoman' => '144'],
-                       'MacGreek'    => ['MacRoman' => '128'],
-                       'MacCyrillic' => ['MacRoman' => '128'],
-                       'MacHebrew'   => ['iso-8859-8' => '128', 'MacRoman' => '128-143+160'], # partial ascii
-                       'MacArabic'   => ['iso-8859-6' => '128', 'cp864' => '128', 'MacRoman' => '128'], #TODO: multiple parents
-                       'MacFarsi'    => ['MacArabic' => '176-191', 'MacRoman' => '128'],
-
-                       'cp37'        => ['posix-bc' => '0'],
-                       'posix-bc'    => ['cp1047' => '64'],
-                       'cp500'       => ['cp37' => '64-95+176-191'],
-                       'cp1047'      => ['cp37' => '16-47+80-95+160-191'],
-                       'cp1026'      => ['cp37' => '64'],
-                       'cp875'       => ['cp37' => '48'],
+                       'ascii'       => ['' => '00-7F'],
+                       'cp437'       => ['cp850' => 0, 'ascii' => '00-1F+80'], # ascii range overridden later
+                       'gsm0338'     => ['ascii' => '00-7F'],
+                       'dingbats'    => ['' => '20-7F+A0'],
+                       'MacDingbats' => ['dingbats' => '80-9F'],
+                       'AdobeZdingbat'=> ['MacDingbats' => '80-9F'], # should be identical but maps to private use
+                       'symbol'      => ['' => '20-7F+A0'],
+                       'AdobeSymbol' => ['symbol' => '20-7F+A0', '' => '20-7F+A0'], # minor differences, irrelevant except for different '€'
+                       'wingdings'   => ['' => '20'],
+                       'wingdings2'  => ['' => '20'],
+                       'wingdings3'  => ['' => '20'],
+                       'webdings'    => ['' => '20'],
+
+                       'iso-8859-2'  => ['iso-8859-1' => 'A0'],
+                       'iso-8859-3'  => ['iso-8859-1' => 'A0'], #TODO: also apply to iso-8859-9
+                       'iso-8859-4'  => ['iso-8859-2' => 'A0'],
+                       'iso-8859-5'  => ['iso-8859-1' => 'A0'],
+                       'iso-8859-6'  => ['cp1256' => '80', 'iso-8859-1' => 'A0'],
+                       'iso-8859-7'  => ['iso-8859-1' => 'A0'],
+                       'iso-8859-8'  => ['iso-8859-1' => 'A0'],
+                       'iso-8859-9'  => ['iso-8859-1' => 'D0-DF+F0'],
+                       'iso-8859-10' => ['iso-8859-4' => 'A0'],
+                       'iso-8859-11' => ['iso-8859-1' => 'A0'],
+                       'iso-8859-13' => ['iso-8859-4' => 'A0'],
+                       'iso-8859-14' => ['iso-8859-1' => 'A0'],
+                       'iso-8859-15' => ['iso-8859-1' => 'A0-BF'],
+                       'iso-8859-16' => ['iso-8859-2' => 'A0'],
+                       'hp-roman8'   => ['iso-8859-1' => 'A0'],
+
+                       'cp1252'      => ['iso-8859-1' => '80-9F'],
+                       'cp1250'      => ['iso-8859-2' => '80-BF', 'cp1252' => '80'],
+                       'cp1254'      => ['iso-8859-9' => '80-9F', 'cp1252' => '80-9F+D0'],
+                       'cp874'       => ['iso-8859-11' => '80-9F', 'cp1252' => '80'], # windows-874 actually cp1162
+                       'cp1257'      => ['iso-8859-13' => '80-9F+FF', 'cp1252' => '80'],
+                       'cp1251'      => ['cp1252' => '80'],
+                       'cp1253'      => ['cp1252' => '80'],
+                       'cp1255'      => ['iso-8859-8' => '80-DF', 'cp1252' => '80'],
+                       'cp1256'      => ['cp1252' => '80'],
+                       'cp1258'      => ['cp1252' => '80-9F+C0'],
+
+                       'cp850'       => ['cp437' => '90'],
+                       'cp860'       => ['cp437' => '80-AF'],
+                       'cp861'       => ['cp865' => '80-AF'],
+                       'cp863'       => ['cp437' => '80-AF'],
+                       'cp865'       => ['cp437' => '90-AF'],
+                       'cp852'       => ['cp850' => '80', 'cp437' => '80'],
+                       'cp857'       => ['cp850' => '80-AF+D0-EF', 'cp437' => '80'],
+                       'cp775'       => ['cp850' => '80'],  # partial cp437
+                       'cp866'       => ['cp437' => '80-AF+E0'],
+                       'cp855'       => ['cp437' => '80'],
+                       'cp1006'      => ['iso-8859-6' => 'A0', 'cp437' => '80'],
+                       'cp737'       => ['cp437' => '80-AF+E0'],
+                       'cp869'       => ['cp437' => '80'],
+                       'cp862'       => ['cp437' => '80-9F'],
+                       'cp864'       => ['MacArabic' => '80', 'iso-8859-6' => '80', 'cp437' => '80'], #TODO: compare form variants
+
+                       'koi8-u'      => ['koi8-r' => '90-BF'],
+                       'koi8-f'      => ['koi8-u' => '90-BF'],
+
+                       'MacRomanian' => ['MacRoman' => 'A0-BF+D0-DF'],
+                       'MacRumanian' => ['MacRomanian' => 'A0-BF+D0-DF', 'MacRoman' => 'A0-BF+D0-DF'],
+                       'MacCroatian' => ['MacRoman' => 'A0'],
+                       'MacCentralEurRoman' => ['MacRoman' => '80'],
+                       'MacIcelandic'=> ['MacRoman' => 'A0-AF+D0-EF'],
+                       'MacTurkish'  => ['MacRoman' => 'D0-DF'], # F5 is unassigned
+                       'MacSami'     => ['MacIcelandic' => '90-BF+D0-DF+F0', 'MacRoman' => '90'],
+                       'MacGreek'    => ['MacRoman' => '80'],
+                       'MacCyrillic' => ['MacRoman' => '80'],
+                       'MacHebrew'   => ['iso-8859-8' => '80', 'MacRoman' => '80-8F+A0'], # partial ascii
+                       'MacArabic'   => ['iso-8859-6' => '80', 'cp864' => '80', 'MacRoman' => '80'], #TODO: multiple parents
+                       'MacFarsi'    => ['MacArabic' => 'B0-BF', 'MacRoman' => '80'],
+
+                       'cp37'        => ['posix-bc' => '00'],
+                       'posix-bc'    => ['cp1047' => '40'],
+                       'cp500'       => ['cp37' => '40-5F+B0-BF'],
+                       'cp1047'      => ['cp37' => '10-2F+50-5F+A0-BF'],
+                       'cp1026'      => ['cp37' => '40'],
+                       'cp875'       => ['cp37' => '30'],
 
                };
 
@@ -206,17 +217,17 @@ sub tabinput {
                if (my ($parent, $part) = pairfirst { defined $visible->{$a} } @parents) {
                        $row{parent} = $parent;
                        $params = $part;
-                       $params = 128 unless $visible->{$parent}
+                       $params = 80 unless $visible->{$parent}
                                or ($input eq 'MacCroatian' and defined $visible->{MacRomanian});
                }
                elsif (defined $visible->{ascii}) {
                        $row{parent} = $parents[0];
-                       $params = $parents[1] // 128;
-                       $params = 128 if $params >= 128;  # ascii offset at most
+                       $params = $parents[1] // 80;
+                       $params = 80 if hex $params >= 0x80;  # ascii offset at most
                }
                elsif (@parents) {
                        $row{parent} = $parents[0];
-                       $params = $parents[1] if $parents[1] == 0;  # apply ascii end
+                       $params = $parents[1] if hex $parents[1] == 0;  # apply ascii end
                }
                $visible->{$_} //= 0 for $row{parent} || ();
        }
@@ -228,95 +239,114 @@ sub tabinput {
                elsif ($param =~ m{ \A cols = (\d+) \z }x) {
                        $row{cols} = $1;
                }
-               elsif ($param =~ m{ \A (?<offset> \d+) (?: [-] (?<endpoint> \d+) )? \z }x) {
+               elsif ($param =~ m{ \A (?<start> \p{AHex}+) (?: [-] (?<end> \p{AHex}+) )? \z }x) {
                        if (defined $row{endpoint}) {
                                # extend earlier range
-                               my $skip = int(($row{endpoint} || $row{offset}) / $row{cols});
-                               for ($skip + 1 .. ($+{offset} / $row{cols}) - 1) {
-                                       $row{skip}->{ $_ * $row{cols} - $row{offset} }++;
+                               my $skip = int(($row{endpoint} || $row{startpoint}) / $row{cols});
+                               for ($skip + 1 .. (hex($+{start}) / $row{cols}) - 1) {
+                                       $row{skip}->{ $_ * $row{cols} - $row{startpoint} }++;
                                }
                        }
                        else {
-                               $row{offset} = $+{offset};
+                               $row{startpoint} = hex $+{start};
                        }
-                       $row{endpoint} = $+{endpoint} || 0;
+                       $row{endpoint} = hex($+{end} || 0);
                }
                else {
                        Alert("Unknown option <q>$param</q> for charset $input");
                }
        }
 
-       if ($input =~ /^U([0-9a-fA-F]+)(?:-([0-9a-fA-F]+))?/) {
-               my $start = hex($1) << ($2 ? 4 : 8);
-               my $end = $2 ? (hex($2) << 4) + $row{cols} - 1 : $start + 255;
-               $row{table} = join '', map { chr } $start .. $end;
+       if ($input =~ m{ \A (?:wing|web)dings \d* \z }ix) {
+               eval "require Encode::\u$input";
+       }
+
+       if ($input eq '') {
+               $row{offset} = delete $row{startpoint};
+               $row{set} = 'Unicode characters';
+               my $block = $row{offset} >> 8;
+               $row{endpoint} ||= ($block + 1 << 8) - 1;
+               $block == ($row{endpoint} >> 8) or undef $block;
+
+               $row{table} = join '', map { chr } $row{offset} .. $row{endpoint};
                utf8::upgrade($row{table});  # prevent latin1 output
-               $row{endpoint} = $end - $start;
-               $row{set} = sprintf 'Unicode block U+%02Xxx', $start >> 8;
-               $row{offset} = $start % 256;
+
+               $row{endpoint} -= $row{offset};
+
+               if (defined $block) {
+                       $row{set} = sprintf 'Unicode block U+%02Xxx', $block;
+                       $row{offset} %= 0x100;
+               }
        }
-       elsif ($input eq 'U') {
-               $row{set} = 'Unicode planes';
+       elsif (lc $input eq 'uu') {
                $row{cell} = do 'charset-ucplanes.inc.pl'
                        or Alert('Table data could not be read', $@ || $!);
-               $row{endpoint} = 1023 * $row{cell}->{colsize};
+               $row{endpoint} ||= 0x3FF;
+               $row{set} = 'Unicode planes';
+       }
+       elsif (lc $input eq 'u') {
+               $row{cell} = do 'charset-unicode.inc.pl'
+                       or Alert('Table data could not be read', $@ || $!);
+
+               $row{endpoint} ||= 0x1FFF;
+               $row{set} = 'Unicode ' . (
+                       $row{startpoint} <  0x1000 && $row{endpoint} < 0x1000 ? 'BMP' :
+                       $row{startpoint} >= 0x1000 && $row{endpoint} < 0x2000 ? 'SMP' :
+                       'allocations'
+               );
+       }
+       elsif ($input =~ m/^utf-*8$/i) {
+               $row{set} = 'UTF-8';
+               $row{cell} = do 'charset-utf8.inc.pl'
+                       or Alert('Table data could not be read', $@ || $!);
+               $row{endpoint} = 0xFF;
        }
        elsif ($row{set} = Encode::resolve_alias($input)) {
-               if ($row{set} eq 'Internal') {
-                       $row{cell} = do 'charset-unicode.inc.pl'
-                               or Alert('Table data could not be read', $@ || $!);
-
-                       $row{endpoint} ||= 8191;
-                       $row{endpoint}  *= $row{cell}->{colsize};
-                       $row{startpoint} = $row{cell}->{colsize} * $row{offset};
-                       $row{offset} = 0;
-                       $row{set} = 'Unicode ' . (
-                               $row{startpoint} <  0x10000 && $row{endpoint} < 0x10000 ? 'BMP' :
-                               $row{startpoint} >= 0x10000 && $row{endpoint} < 0x20000 ? 'SMP' :
-                               'allocations'
-                       );
-               }
-               elsif ($row{set} eq 'utf-8-strict') {
-                       $row{set} = 'UTF-8';
-                       $row{cell} = do 'charset-utf8.inc.pl'
-                               or Alert('Table data could not be read', $@ || $!);
-                       $row{endpoint} = 255;
+               $row{offset} = delete $row{startpoint};
+               $row{endpoint} ||= 0xFF;
+               if ($row{set} eq 'MacHebrew' or $row{set} eq 'MacThai') {
+                       # array of possibly multiple characters per code point
+                       $row{table} = [
+                               map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $row{endpoint}
+                       ];
                }
                else {
-                       $row{endpoint} ||= 255;
-                       if ($row{set} eq 'MacHebrew' or $row{set} eq 'MacThai') {
-                               # array of possibly multiple characters per code point
-                               $row{table} = [
-                                       map { Encode::decode($row{set}, pack 'C*', $_) } $row{offset} .. $row{endpoint}
-                               ];
+                       # ~16x faster than decoding in loop;
+                       # substr strings is twice as fast as splitting to an array
+                       $row{table} = Encode::decode($row{set}, pack 'C*', $row{offset} .. $row{endpoint});
+               }
+
+               if ($row{set} eq 'cp437') {
+                       if ($row{offset} <= 0xED and $row{endpoint} >= 0xED) {
+                               # replace phi glyph
+                               substr($row{table}, 0xED - $row{offset}, 1) = 'ϕ';
                        }
-                       else {
-                               # ~16x faster than decoding in loop;
-                               # substr strings is twice as fast as splitting to an array
-                               $row{table} = Encode::decode($row{set}, pack 'C*', $row{offset} .. $row{endpoint});
+                       if ($row{offset} < 0x20) {
+                               # replace control characters by visible variants
+                               my $sub = substr ' ☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼', $row{offset};
+                               substr($row{table}, 0, length $sub) = $sub;
                        }
-                       $row{endpoint} -= $row{offset};
-
-                       if ($row{set} eq 'cp437') {
-                               for my $phipos (237 - $row{offset}) {
-                                       next if $phipos < 0 or $phipos > $row{endpoint};
-                                       # replace phi glyph
-                                       substr($row{table}, $phipos, 1) = pack 'U*', 0x3D5;
-                               }
-                               if ($row{offset} == 0) {
-                                       # replace control characters by visible variants
-                                       substr($row{table}, 0, 32) = pack 'U*', map {hex} qw(
-                                               2007 263A 263B 2665 2666 2663 2660 2022
-                                               25D8 25CB 25D9 2642 2640 266A 266B 263C
-                                               25BA 25C4 2195 203C 00B6 00A7 25AC 21A8
-                                               2191 2193 2192 2190 221F 2194 25B2 25BC
-                                       );
-                               }
+               }
+               elsif ($row{set} eq 'symbol') {
+                       if ($row{offset} <= 0x60 and $row{endpoint} >= 0x60) {
+                               # replace radical extender by closest unicode equivalent
+                               substr($row{table}, 0x60 - $row{offset},  1) = '│';
+                       }
+                       if ($row{offset} <= 0xBD and $row{endpoint} >= 0xFF) {
+                               substr($row{table}, 0xBD - $row{offset},  2) = '⏐⎯'; # arrow extenders
+                               substr($row{table}, 0xD2 - $row{offset},  3) = '®©™'; # serif variants
+                               substr($row{table}, 0xE0 - $row{offset},  1) = '◊'; # replace lookalike, should match AdobeSymbol
+                               substr($row{table}, 0xE2 - $row{offset},  3) = '®©™'; # sans-serif variants
+                               substr($row{table}, 0xE6 - $row{offset}, 10) = '⎛⎜⎝⎡⎢⎣⎧⎨⎩⎪';
+                               substr($row{table}, 0xF0 - $row{offset},  1) = '€';
+                               substr($row{table}, 0xF4 - $row{offset}, 11) = '⎮⌡⎞⎟⎠⎤⎥⎦⎫⎬⎭';
                        }
-
-                       $visible->{ascii} =  # assume common base
-                       $visible->{ $row{set} } = 1;
                }
+
+               $row{endpoint} -= $row{offset};
+
+               $visible->{ascii} =  # assume common base
+               $visible->{ $row{set} } = 1;
        }
        else {
                Alert("Encoding <q>$input</q> unknown");
@@ -340,22 +370,23 @@ sub range_cell {
        $len /= $colsize;
        $name //= $len <= 2 ? 'res' : 'reserved';
 
-       if (my $part = $offset/$colsize % $cols) {
+       if (my $part = ($offset/$colsize - $info->{startpoint}) % $cols) {
                # continued row
                my $rest = $cols - $part;  # remaining
                $rest = $len if $len < $rest; #TODO: optimise
                if ($len -= $rest) {
                        # continued on new row
                        my @next = ($len * $colsize, "$class joinu");
+                       my $separate = $cols - $len > $rest;  # columns not on next row
                        if ($len > $rest) {
                                # minority remains
                                push @next, $name, $title;
                                $title ||= $name;
-                               $name = '';
+                               $name = $separate && '…';
                        }
                        else {
                                # minority on next row
-                               push @next, '"', $title || $name;
+                               push @next, $separate && '"', $title || $name;
                        }
                        $table->{$offset + $colsize*$rest} //= \@next;
                        $class .= ' joind';
@@ -390,7 +421,7 @@ sub range_cell {
        $attr .= $1 if $class and $class =~ s/( \w+="[^"]*")//;
        $attr .= sprintf ' class="%s"', $class if $class;
        $attr .= sprintf ' title="%s"', EscapeHTML($title) if $title;
-       return "<td$attr>$name";
+       return "<td$attr>$name\n";
 }
 
 for my $row (@request) {
@@ -399,12 +430,12 @@ for my $row (@request) {
        my $coldigits = ceil(log($colsize * $cols) / log(16));  # uniform length of hexadecimal header
        my $rowdiv = 16 ** $coldigits;  # row divide for column digits
        $rowdiv = 1 if $rowdiv != $cols * $colsize;  # divide only if all columns are matched
-       my $offset = $row->{startpoint} || 0;
+       my $offset = $row->{startpoint} * $colsize || 0;
 
        printf '<div class="section"><table class="glyphs%s">', !$row->{cell} && ' charmap';
        my $title = $row->{set};
        $title .= " <aside>(over $_)</aside>"
-               for grep { $_ ne 'iso-8859-1' } $row->{parent} // ();
+               for $row->{parent} || ();
        printf '<caption>%s</caption>', $title;
        print '<col>' x ($cols + 1);
        for my $section (qw{thead}) {
@@ -412,8 +443,9 @@ for my $row (@request) {
                printf '<th>%0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1;
                print "\n";
        }
+
        print '<tbody>';
-       while ($offset < $row->{endpoint}) {
+       while ($offset <= $row->{endpoint} * $colsize) {
                if ($row->{skip}->{$offset}) {
                        $offset += $cols * $colsize;
                        next;
@@ -433,39 +465,39 @@ for my $row (@request) {
                                printf '%X', ($offset + $row->{offset}) / $rowdiv;
                        }
                }
+               say '';
+
                for (1 .. $cols) {
                        if ($row->{cell}) {
                                print range_cell($row, $offset);
                                next;
                        }
 
+                       my $cp = $offset + $row->{offset};
                        my $glyph = ref $row->{table} eq 'ARRAY' ? $row->{table}->[$offset] :
                                substr $row->{table}, $offset, 1;
-                       if ($glyph eq $NOCHAR) {
-                               print '<td>';
-                               next;
-                       }
+                       my ($cell, $name, $class) = $glyph eq $NOCHAR ? () :
+                               $glyphs->glyph_html($glyph);
 
                        if (exists $get{compare}) {
                                state $visible = {};
-                               my $cp = $offset + $row->{offset};
-                               printf '<td class="%s" title="%3$s">%2$s',
+                               $class = (
                                        $cp == ord $glyph ? 'l4' :
                                        $row->{parent} && $glyph eq
                                                Encode::decode($row->{parent}, pack 'C', $cp) ? 'l3' :
+                                       !$class ? undef :
                                        $visible->{$glyph} ? 'l2' :
-                                       'l1',
-                                       $glyphs->glyph_html($glyph);
+                                       'l1'
+                               );
                                $visible->{$glyph}++;
-                               next;
                        }
 
-                       print "\n".$glyphs->glyph_cell($glyph);
+                       say sprintf $class ? '<td title="%s" class="X %s">%s' : '<td title="%s">',
+                               $name, $class, $cell;
                }
                continue {
                        $offset += $colsize;
                }
-               print "\n";
        }
        say '</table></div>';
 }