Vendor import of less 487.

mkutable

@@ -4,14 +4,14 @@ use strict;
 my $USAGE = <<__EOF__;
    usage: mkutable [-n] [-f#] type... [--] [<] UnicodeData.txt
           -n = take non-matching types
-	  -f = zero-based type field (default 2)
+      -f = zero-based type field (default 2)
 __EOF__
 
 use vars qw( $opt_f $opt_n );
 use Getopt::Std;
 my $type_field = 2;
 
-exit (main() ? 1 : 0);
+exit (main() ? 0 : 1);
 
 sub main {
     my $date = `date`;
@@ -28,48 +28,58 @@ sub main {
         $types{$arg} = 1;
     }
     my %out = ( 'types' => \%types );
-    my $last_code = 0;
 
     print $header;
+    my $last_code = 0;
     while (<>) {
         chomp;
         s/#.*//;
         my @fields = split /;/;
         next if not @fields;
-        my $code = hex $fields[0];
+        my ($lo_code, $hi_code);
+        my $codes = $fields[0];
+        if ($codes =~ /(\w+)\.\.(\w+)/) {
+            $lo_code = hex $1;
+            $hi_code = hex $2;
+        } else {
+            $lo_code = $hi_code = hex $fields[0];
+        }
         my $type = $fields[$type_field];
         $type =~ s/\s//g;
-        while (++$last_code < $code) {
-            output(\%out, $last_code, '?');
+        for ($last_code = $lo_code; $last_code <= $hi_code; ++$last_code) {
+            output(\%out, $last_code, $type);
         }
-        output(\%out, $code, $type);
     }
-    output(\%out, $last_code+1, '?');
+    output(\%out, $last_code);
+    return 1;
 }
 
 sub output {
     my ($out, $code, $type) = @_;
-    my $match = ${${$out}{types}}{$type};
-    my $type_change = (not $$out{start_type} or $type ne $$out{start_type});
-    $match = not $match if $opt_n;
-    if ($match and (not $$out{in_run} or $type_change)) {
-        end_run($out, $code-1);
+    my $type_ok = ($type and ${${$out}{types}}{$type});
+    $type_ok = not $type_ok if $opt_n;
+    my $prev_code = $$out{prev_code};
+
+    if (not $type_ok) {
+        end_run($out, $prev_code);
+    } elsif (not $$out{in_run} or $type ne $$out{run_type} or $code != $prev_code+1) {
+        end_run($out, $prev_code);
         start_run($out, $code, $type);
-    } elsif (not $match and $$out{in_run}) {
-        end_run($out, $code-1);
     }
+    $$out{prev_code} = $code;
 }
 
 sub start_run {
     my ($out, $code, $type) = @_;
     $$out{start_code} = $code;
-    $$out{start_type} = $type;
+    $$out{prev_code} = $code;
+    $$out{run_type} = $type;
     $$out{in_run} = 1;
 }
 
 sub end_run {
     my ($out, $code) = @_;
     return if not $$out{in_run};
-    printf "\t{ 0x%04x, 0x%04x }, /* %s */\n", $$out{start_code}, $code, $$out{start_type};
+    printf "\t{ 0x%04x, 0x%04x }, /* %s */\n", $$out{start_code}, $code, $$out{run_type};
     $$out{in_run} = 0;
 }