texi2html: Don't break with the latest texi2html version

Instead of explicitly calling the functions that are set by default (which
breaks if the functions are renamed), store the default function reference
and call that value instead.
(cherry picked from commit d41b484a83c68e0f12800c3f073eb991af1e7946)

diff --git a/lilypond-texi2html.init b/lilypond-texi2html.init
index 8439436dbed81e9df5e2e7f9f8040f3dfd94a365..5fd88f93253d1e2615f097e3ca20a2bd0b93c269 100644 (file)
--- a/lilypond-texi2html.init
+++ b/lilypond-texi2html.init
@@ -114,14 +114,19 @@ if ($Texi2HTML::Config::SPLIT eq 'section') {
   $Texi2HTML::Config::element_file_name    = \&lilypond_element_file_name;
 }
 $Texi2HTML::Config::element_target_name  = \&lilypond_element_target_name;
+$default_print_element_header = $Texi2HTML::Config::print_element_header;
 $Texi2HTML::Config::print_element_header = \&lilypond_print_element_header;
 $Texi2HTML::Config::print_page_foot      = \&print_lilypond_page_foot;
 $Texi2HTML::Config::print_navigation     = \&lilypond_print_navigation;
 $Texi2HTML::Config::external_ref         = \&lilypond_external_ref;
+$default_external_href = $Texi2HTML::Config::external_href;
 $Texi2HTML::Config::external_href        = \&lilypond_external_href;
+$default_toc_body = $Texi2HTML::Config::toc_body;
 $Texi2HTML::Config::toc_body             = \&lilypond_toc_body;
 $Texi2HTML::Config::css_lines            = \&lilypond_css_lines;
+$default_unknown = $Texi2HTML::Config::unknown;
 $Texi2HTML::Config::unknown              = \&lilypond_unknown;
+$default_print_page_head = $Texi2HTML::Config::print_page_head;
 $Texi2HTML::Config::print_page_head      = \&lilypond_print_page_head;
 # $Texi2HTML::Config::foot_line_and_ref    = \&lilypond_foot_line_and_ref;
 $Texi2HTML::Config::foot_line_and_ref  = \&makeinfo_like_foot_line_and_ref;
@@ -454,9 +459,6 @@ sub lilypond_external_ref($$$$$$)
 
   $displaytext = &$anchor('', $href, $displaytext) if ($displaytext ne '');
   return &$I('%{node_file_href}', { 'node_file_href' => $displaytext });
-
-#  Default: format as "see <a ..>NODE</a> section 'SECTION' in BOOK". We don't want this!
-#   return t2h_default_external_ref($type, $section, $book, $file_node, $href, $cross_ref);
 }
 
 
@@ -491,7 +493,7 @@ sub lilypond_unknown($$$$$)
       }
       return ('', 1, undef, undef);
     } else {
-      return t2h_default_unknown($macro, $line, $pass, $stack, $state);
+      return &$default_unknown($macro, $line, $pass, $stack, $state);
     }
 }
 
@@ -512,14 +514,13 @@ sub lilypond_external_href($$$)
   my $node_id = shift;
   my $node_hxmlt_id = shift;
   my $file = shift;
-  my $original_func = \&t2h_default_external_href;
 
   # 1) Keep a hash of book->section_map
   # 2) if not file in keys hash => try to load the map (assign empty map if
   #    non-existent => will load only once!)
   # 3) if node in the section=>(file, anchor) map, replace node_id and
   #    node_xhtml_id by the map's values
-  # 4) call the t2h_default_external_href with these values (or the old ones if not found)
+  # 4) call the default_external_href with these values (or the old ones if not found)
 
   if (($node_id ne '') and defined($file) and ($node_id ne 'Top')) {
     my $map_name = $file;
@@ -544,9 +545,9 @@ sub lilypond_external_href($$$)
   }
 
   if (defined $file) {
-    return &$original_func($node, $node_id, $node_hxmlt_id, $file);
+    return &$default_external_href($node, $node_id, $node_hxmlt_id, $file);
   } else {
-    return &$original_func($node, $node_id, $node_hxmlt_id);
+    return &$default_external_href($node, $node_id, $node_hxmlt_id);
   }
 }
 
@@ -711,7 +712,7 @@ sub lilypond_print_element_header
       @this_page_toc = lilypond_generate_page_toc_body($Texi2HTML::THIS_ELEMENT);
     }
   }
-  return T2H_DEFAULT_print_element_header( $first_in_page, $previous_is_top);
+  return &$default_print_element_header( $first_in_page, $previous_is_top);
 }
 
 # Generate the HTML output for the TOC
@@ -720,14 +721,14 @@ sub lilypond_toc_body($)
     my $elements_list = shift;
     # Generate a default TOC for pages without THIS_ELEMENT
     @default_toc = lilypond_generate_page_toc_body(@$elements_list[0]);
-    return T2H_GPL_toc_body($elements_list);
+    return &$default_toc_body($elements_list);
 }
 
 # Print out the TOC in a <div> at the beginning of the page
 sub lilypond_print_page_head($)
 {
     my $fh = shift;
-    T2H_DEFAULT_print_page_head($fh);
+    &$default_print_page_head($fh);
     print $fh "<div id=\"main\">\n";
 }