Character mnemonics following compose key â<:
+say join("\n",
+ $mode ? (
+ ' in the X Window System (Shift+AltGr by default).',
+ 'Differences from RFC-1345 are indicated.',
+ ) : (':',
+ 'i^k in Vim,',
+ '^u^\ in Emacs,',
+ '^a^v in Screen.',
+ 'Similar but different from X.Org.',
+ ),
+ 'Also see common Unicode.
',
+);
+say '
Unofficial proposals',
+ ' are available as ex commands.' if not $mode;
+:>
<:
-my $di = do 'digraphs.inc.pl';
-
-sub quote {
- local $_ = shift;
- s/"/"/g;
- s//>/g;
- return $_;
+my $di = do 'data/digraphs.inc.pl'
+ or die "Error loading digraphs data: ", $@ // $!;
+
+if (exists $get{v}) {
+ # show characters for inverted mnemonics (vim alternatives)
+ $di->{ substr($_, 1, 1) . substr($_, 0, 1) } ||=
+ [ $di->{$_}->[0], '', 'l0 ex', '', $di->{$_}->[4] ]
+ for grep { ref $di->{$_} } keys %{$di};
}
my @chars = (
@@ -41,54 +54,104 @@ my @chars = (
['A'..'M'], ['N'..'Z'],
['a'..'m'], ['n'..'z'],
);
-my @chars2 = (@chars, ['_']); # trailing character (extended set)
+my @chars2 = (['_'], @chars); # trailing character (extended set)
+my @columns = !exists $get{split} ? \@chars2 :
+ ([@chars2[0, 1, 3, 4, 6]], [@chars2[2, 5, 7]]);
+
+if ($mode) {
+ my $xorg = do 'data/digraphs-xorg.inc.pl'
+ or die "Error loading Xorg data: ", $@ // $!;
+ $_ = [ord $_] for values %{$xorg};
+ $xorg->{$_}->[2] = # class = compatibility
+ $di->{$_} ? $di->{$_}->[0] != $xorg->{$_}->[0] ? 'l1' : # conflict
+ $di->{$_}->[2] eq 'l4' ? 'l5' : 'l3' : 'l2' # rfc|any|none
+ for keys %{$xorg};
+
+ for my $cp (map {$_->[0]} values %{$xorg}) {
+ next if (state $seen = {})->{$cp}++; # List::MoreUtils::uniq
+
+ # find multiple equivalent mnemonics
+ my @equiv = grep {$cp eq $_->[0]}
+ map {$xorg->{$_}} sort keys %{$xorg}; # values ordered by mnem.
+
+ # search for the most compatible match
+ my ($compat) = sort {
+ $equiv[$b]->[2] cmp $equiv[$a]->[2] # highest level
+ || $b <=> $a # fallback to last mnemonic
+ } 0 .. $#equiv;
+
+ # reclassify all but one as level 0 (omitted)
+ splice @equiv, $compat // -1, 1, ();
+ $_->[2] = 'l0 ex' for @equiv;
+ }
+
+ $chars2[0] = [qw( # ^ _ ` ~ )];
+ @chars = @chars2;
+ $di = $xorg;
+}
-print '
';
-print qq'
' for map {scalar @$_} @chars2;
-print "
\n";
+for my $colchars (@columns) {
+print '
';
+print qq'
' for map {scalar @$_} @{$colchars};
+say '
';
for my $section (qw{thead tfoot}) {
- print "<$section>
";
- print '
', quote($_) for map {@$_} @chars2;
- print "
\n";
+ print "<$section>
â³";
+ print '
', EscapeHTML($_) for map {@$_} @{$colchars};
+ say '
';
}
for my $c1group (@chars) {
print '
';
for my $c1 (@$c1group) {
- print '
', quote($c1);
- for my $c2 (map {@$_} @chars2) {
+ print '
', EscapeHTML($c1);
+ for my $c2 (map {@$_} @$colchars) {
my $mnem = $c1 . $c2;
if (not defined $di->{$mnem}) {
print '
';
next;
}
if (ref $di->{$mnem} ne 'ARRAY') {
- printf '