Fix up "see also" entries in indexes, in HTML output.

Not perfect, but better than it was (it used to show
a link to the Intro chapter).

diff --git a/script/gen b/script/gen
index 91af773bccc8b2c1b855284e277c9fa35a258b3a..e0627f3d42c95e7c7eaebeecb35a35569a30ed93 100755 (executable)
--- a/script/gen
+++ b/script/gen
@@ -335,8 +335,34 @@ sub build_indexes {
             my $primary   = $node->findvalue('child::primary');
             my $first     = ( $primary =~ /^[A-Za-z]/ ) ? uc( substr( $primary, 0, 1 ) ) : '';  # first letter or marker
             my $secondary = $node->findvalue('child::secondary') || '';
+           my $see       = $node->findvalue('child::see');
+           my $see_also  = $node->findvalue('child::seealso');
+
             next unless ( $primary || $secondary );    # skip blank entries for now...
+
+           if ( $see ) {
+             # not perfect; the whole line ends up bold
+             if ( $secondary ) {
+               $secondary .= '  see  ' . $see;
+             } else {
+               $primary .= '  see  ' . $see;
+             }
+           } elsif ( $see_also ) {
+             if ( $secondary ) {
+               $secondary .= '  see also  ' . $see_also;
+             } else {
+               $primary .= '  see also  ' . $see_also;
+             }
+           }
+
             $index_hash->{$role}{$first}{$primary}{$secondary} ||= [];
+           next if ( $see || $see_also );
+
+# JGH 2022/07/01
+# The $current_id being pushed here is presumably the section, given where the
+# hyperlink end up pointing to.  For bug 2889 we'd like to have something more
+# precise; tha presumably requires an anchor at the indexed point?
+
             push @{ $index_hash->{$role}{$first}{$primary}{$secondary} }, $current_id;
         }
         else {