backport fix for #2505 drop links from entries in TOC

CHANGELOG.adoc

@@ -7,7 +7,9 @@ For a detailed view of what has changed, refer to the {url-repo}/commits/main[co
 
 == Unreleased
 
-_No changes since previous release._
+Improvements::
+
+* drop links from entries in TOC (#2505)
 
 == 2.3.14 (2024-03-08) - @mojavelinux
 

lib/asciidoctor/pdf/converter.rb

@@ -3917,6 +3917,7 @@ def ink_toc_level entries, num_levels, dot_leader, num_front_matter_pages
           theme_font :toc, level: entry_level do
             entry_title = entry.context == :section ? entry.numbered_title : (entry.title? ? entry.title : (entry.xreftext 'basic'))
             next if entry_title.empty?
+            entry_title = entry_title.gsub DropAnchorRx, '' if entry_title.include? '<a'
             entry_title = transform_text entry_title, @text_transform if @text_transform
             pgnum_label_placeholder_width = rendered_width_of_string '0' * @toc_max_pagenum_digits
             # NOTE: only write title (excluding dots and page number) if this is a dry run

spec/toc_spec.rb

@@ -1604,6 +1604,30 @@ def get_entries_for_toc _node
     (expect images[0][:width]).to eql images[1][:width]
   end
 
+  it 'should remove links from entries in toc but leave behind linked text' do
+    pdf = to_pdf <<~'EOS'
+    = Document Title
+    :doctype: book
+    :toc:
+
+    [#ch1]
+    == https://example.org[Once] Upon a https://example.com[Time]
+
+    [#ch2]
+    == Continuing What <<ch1>> Started
+    EOS
+
+    (expect pdf.pages).to have_size 4
+    toc_lines = ((pdf.page 2).text.split ?\n).reject(&:empty?)
+    (expect toc_lines).to have_size 3
+    (expect toc_lines[0]).to eql 'Table of Contents'
+    (expect toc_lines[1]).to start_with 'Once Upon a Time'
+    (expect toc_lines[2]).to start_with 'Continuing What Once Upon a Time Started'
+    annots = get_annotations pdf, 2
+    (expect annots).to have_size 4
+    (expect annots.map {|it| it[:Dest] }.sort).to eql %w(ch1 ch1 ch2 ch2)
+  end
+
   it 'should allow extended converter to insert extra page before toc' do
     backend = nil
     create_class (Asciidoctor::Converter.for 'pdf') do