resolves #2198 break and wrap long contiguous text in source block wh…

…en linenums are enabled (PR #2199)

CHANGELOG.adoc

@@ -11,6 +11,7 @@ Bug Fixes::
 
 * scale inline image to fit within available height of page, accounting for the top padding of the line and the bottom gutter (#2193)
 * short-circuit formatted_text routine and log error if fragments in first line cannot fit on a new page
+* break and wrap long contiguous text in source block when linenums are enabled (#2198)
 
 == 2.0.0 (2022-05-18) - @mojavelinux
 

lib/asciidoctor/pdf/formatted_text/source_wrap.rb

@@ -11,15 +11,15 @@ module SourceWrap
         def wrap array
           return super unless array[0][:linenum] # sanity check
           initialize_wrap array
+          @line_wrap.extend SourceLineWrap
           highlight_line = stop = nil
           unconsumed = @arranger.unconsumed
           until stop
             if (first_fragment = unconsumed[0])[:linenum]
               linenum_text = first_fragment[:text]
               linenum_spacer ||= { text: (NoBreakSpace.encode linenum_text.encoding) + (' ' * (linenum_text.length - 1)) }
               highlight_line = (second_fragment = unconsumed[1])[:highlight] ? second_fragment.dup : nil
-            else
-              # NOTE: a wrapped line
+            else # wrapped line
               first_fragment[:text] = first_fragment[:text].lstrip
               @arranger.unconsumed.unshift highlight_line if highlight_line
               @arranger.unconsumed.unshift linenum_spacer.dup
@@ -43,6 +43,12 @@ def wrap array
           @arranger.unconsumed
         end
       end
+
+      module SourceLineWrap
+        def update_line_status_based_on_last_output
+          @arranger.current_format_state[:linenum] ? nil : super
+        end
+      end
     end
   end
 end

spec/source_spec.rb

@@ -905,6 +905,31 @@ class Type; end
       (expect (pdf.find_unique_text %r/^\s*70\s*$/)[:page_number]).to be 2
       (expect formatted_text_box_extensions_count).to be 0
     end
+
+    it 'should break and wrap numbered line if text does not fit on a single line' do
+      input = <<~EOS
+      :source-highlighter: rouge
+
+      [%linenums,text]
+      ----
+      y#{'o' * 100}
+      ----
+      EOS
+
+      pdf = to_pdf input, analyze: true
+      (expect pdf.pages).to have_size 1
+      linenum_text = pdf.find_unique_text '1 '
+      (expect linenum_text).not_to be_nil
+      first_line_text = pdf.find_unique_text %r/^yo/
+      wrapped_text = pdf.find_unique_text %r/^ooo/
+      (expect linenum_text[:x]).to be < first_line_text[:x]
+      (expect linenum_text[:y]).to eql first_line_text[:y]
+      (expect linenum_text[:x]).to be < wrapped_text[:x]
+      (expect wrapped_text[:x]).to eql first_line_text[:x]
+      (expect linenum_text[:y]).to be > wrapped_text[:y]
+      lines = (to_pdf input, pdf_theme: { code_border_radius: 0, code_border_width: [1, 0] }, analyze: :line).lines
+      (expect (lines[0][:from][:y] - lines[1][:from][:y]).abs).to (be_within 2).of 50
+    end
   end
 
   context 'CodeRay' do