charset: replace delete character by symbol substitute

[sheet.git] / tools / mkcharinfo

diff --git a/tools/mkcharinfo b/tools/mkcharinfo
index b673105339f79357b741efc19c8e671eb3b24680..27c11d93bcf53b34c50fdc3d895900cc1579c16c 100755 (executable)
--- a/tools/mkcharinfo
+++ b/tools/mkcharinfo
@@ -61,6 +61,16 @@ for (keys %diinc) {
        }
 }
 
+eval {
+       # read introducing unicode versions for known characters
+       my $agemap = do 'unicode-age.inc.pl' or die $@ || $!;
+       for my $chr (keys %info) {
+               my $version = $agemap->{ord $chr} or next;
+               $info{$chr}->{class}->{'u-v'.$version}++
+       }
+       1;
+} or warn "Failed including unicode version data $@";
+
 for my $chr (keys %info) {
        my $cp = ord $chr;
        # attempt to get unicode character information
@@ -70,7 +80,7 @@ for my $chr (keys %info) {
                        || { block => '?', category => 'Xn', name => '', script => '' }
        } or next;
 
-       $info->{$_} = $info{$chr}->{$_} for qw(di html class string);
+       $info->{$_} = $info{$chr}->{$_} for keys %{ $info{$chr} };
 
        # categorise by unicode types and writing script
        $info->{class}->{$_}++ for $info->{category};
@@ -95,7 +105,9 @@ for my $chr (keys %info) {
                                ? '<'.$info->{unicode10}.'>'  # the old name was much more useful
                                : sprintf('<control U+%04X>', $cp);  # at least identify by value
                        # show descriptive symbols instead of control chars themselves
-                       $info->{string} = $cp < 32 ? chr($cp + 0x2400) : chr(0xFFFD);
+                       $info->{string} = $cp < 32   ? chr($cp + 0x2400) :
+                                         $cp == 127 ? chr(0x2421) :
+                                                      chr(0xFFFD);
                }
        }