v3: param, html, epub, xml, simplify file-naming with language code

* language code occurs in fixed location within file-name (could previously do
  so in 1 of 3 configured locations)

11 files changed, 68 insertions, 65 deletions

diff --git a/lib/sisu/v3/concordance.rb b/lib/sisu/v3/concordance.rb
index 72031419..91b63778 100644
--- a/lib/sisu/v3/concordance.rb
+++ b/lib/sisu/v3/concordance.rb
@@ -212,17 +212,17 @@ WOK
       end
     protected
       def location_scroll(wordlocation,show)
-        %{<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}\##{wordlocation}">#{wordlocation}</a>;  }
+        %{<a href="doc#{@md.lang_code_insert}#{Sfx[:html]}\##{wordlocation}">#{wordlocation}</a>;  }
       end
       def location_seg(wordlocation,show) ##fix
-        @word_location_seg=wordlocation.gsub(/(.+?)\#(\d+)/,"#{@md.fnl[:pre]}\\1#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}#\\2") unless wordlocation.nil?
+        @word_location_seg=wordlocation.gsub(/(.+?)\#(\d+)/,"\\1#{@md.lang_code_insert}#{Sfx[:html]}#\\2") unless wordlocation.nil?
         case wordlocation
         when @rxp_t1
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{show}">H</a>]#{show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:html]}##{show}">H</a>]#{show},  }
         when @rxp_t2
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{show}">H</a>]#{show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:html]}##{show}">H</a>]#{show},  }
         when @rxp_t3
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{show}">H</a>]#{show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:html]}##{show}">H</a>]#{show},  }
         else %{<a href="#{@word_location_seg}">#{show}</a>,  }
         end
       end
@@ -337,7 +337,7 @@ WOK
         end
         credits=@vz.credits_sisu
         @file_concordance << %{</div></body>\n</html>} # footer
-        SiSU_Screen::Ansi.new(@opt.cmd,@md.fns,"#{@md.file.output_path.html_concordance.dir}/#{@md.file.base_filename.html_concordance}").flow if @md.opt.cmd =~/[MV]/
+        SiSU_Screen::Ansi.new(@md.opt.cmd,@md.fns,"#{@md.file.output_path.html_concordance.dir}/#{@md.file.base_filename.html_concordance}").flow if @md.opt.cmd =~/[MV]/
       end
     end
   end
diff --git a/lib/sisu/v3/epub.rb b/lib/sisu/v3/epub.rb
index 422c1e68..7293c601 100644
--- a/lib/sisu/v3/epub.rb
+++ b/lib/sisu/v3/epub.rb
@@ -310,7 +310,7 @@ module SiSU_EPUB
         title=if dob.obj !~/Document Information/; linkname
         else
           link='metadata'
-          %{<b><a href="#{@md.fnl[:pre]}#{link}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}">#{linkname}</a></b>}
+          %{<b><a href="#{link}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}">#{linkname}</a></b>}
         end
         toc={}
         txt_obj={ txt: title }
@@ -395,13 +395,13 @@ module SiSU_EPUB
         linkname,ocn=dob.obj.strip,dob.ocn
         p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn) if ocn
         if dob.ln==4
-          seg_link=%{  <a href="#{@md.fnl[:pre]}#{dob.name}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}">
+          seg_link=%{  <a href="#{dob.name}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}">
     #{dob.obj}
   </a> }
           @@seg_url=dob.name
         elsif dob.obj =~/\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+/
           seg_link=dob.obj.gsub(/^(\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+)(.*)/,
-            %{<a href="#{@md.fnl[:pre]}\\1#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}">} +
+            %{<a href="\\1#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}">} +
             %{\\1 \\2</a> })
         end
         p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn) if ocn
@@ -423,7 +423,7 @@ module SiSU_EPUB
         if ocn \
         and ocn !~/#/
           p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}#o#{ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}#o#{ocn}">
     #{linkname}
   </a>}
           txt_obj={ txt: lnk_n_txt }
@@ -444,7 +444,7 @@ module SiSU_EPUB
         if ocn \
         and ocn !~/#/
           p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}#o#{ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}#o#{ocn}">
   #{linkname}
 </a>}
           txt_obj={ txt: lnk_n_txt }
diff --git a/lib/sisu/v3/epub_concordance.rb b/lib/sisu/v3/epub_concordance.rb
index 205f4f22..687155d2 100644
--- a/lib/sisu/v3/epub_concordance.rb
+++ b/lib/sisu/v3/epub_concordance.rb
@@ -185,18 +185,18 @@ WOK
     protected
       def location_scroll(wordlocation,show)
         @wordlocation=wordlocation
-        %{<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}\##{@wordlocation}">#{@wordlocation}</a>;  }
+        %{<a href="doc#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}\##{@wordlocation}">#{@wordlocation}</a>;  }
       end
       def location_seg(wordlocation,show)
         @wordlocation,@show=wordlocation,show
-        @word_location_seg=wordlocation.gsub(/(.+?)\#(\d+)/,"#{@md.fnl[:pre]}\\1#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}#o\\2") unless wordlocation.nil?
+        @word_location_seg=wordlocation.gsub(/(.+?)\#(\d+)/,"\\1#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}#o\\2") unless wordlocation.nil?
         case @wordlocation
         when @rxp_t1
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}##{@show}">H</a>]#{@show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}##{@show}">H</a>]#{@show},  }
         when @rxp_t2
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}##{@show}">H</a>]#{@show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}##{@show}">H</a>]#{@show},  }
         when @rxp_t3
-          %{[<a href="#{@md.fnl[:pre]}doc#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}##{@show}">H</a>]#{@show},  }
+          %{[<a href="doc#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}##{@show}">H</a>]#{@show},  }
         else %{<a href="#{@word_location_seg}">#{@show}</a>,  }
         end
       end
diff --git a/lib/sisu/v3/epub_format.rb b/lib/sisu/v3/epub_format.rb
index 5af5c0b4..e75ad112 100644
--- a/lib/sisu/v3/epub_format.rb
+++ b/lib/sisu/v3/epub_format.rb
@@ -1196,13 +1196,13 @@ WOK
 }
     end
     def seg_head_navigation_band
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top">
       #{@vz.epub_png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<p class="align_right">#{firstseg}</p>}
     end
     def seg_head_navigation_band_bottom
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top">
       #{@vz.epub_png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<p class="align_right">#{firstseg}</p>}
@@ -1335,17 +1335,17 @@ WOK
     def dot_control_pre_next
       %{<table summary="segment hidden control pre and next" width="100%" border="0" cellpadding="0" bgcolor=#{@vz.color_grey_pale} align="center">
 <tr><td align="left">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_xhtml[@seg_name_xhtml_tracker-1]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_xhtml[@seg_name_xhtml_tracker-1]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_dot_pre}
   </a>
 </td>
 <td align="center">
-  <a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@index}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_dot_toc}
   </a>
 </td>
 <td align="right">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_xhtml[@seg_name_xhtml_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_next}>
+  <a href="#{@seg_name_xhtml[@seg_name_xhtml_tracker+1]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_next}>
     #{@vz.png_nav_dot_nxt}
   </a>
 #{@vz.table_close}}
@@ -1353,12 +1353,12 @@ WOK
     def dot_control_pre
       %{<table summary="segment hidden control pre" width="100%" border="0" cellpadding="0" bgcolor=#{@vz.color_grey_pale} align="center">
 <tr><td align="left">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_xhtml[@seg_name_xhtml_tracker-1]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_xhtml[@seg_name_xhtml_tracker-1]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_dot_pre}
   </a>
 </td>
 <td align="center">
-  <a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@index}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_dot_toc}
   </a>
 </td>
@@ -1370,15 +1370,15 @@ WOK
     end
     def toc_nav(f_pre=false,f_nxt=false,use=1)
       pre=nxt=''
-      toc=%{<a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+      toc=%{<a href="#{@index}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_toc}>
   #{@vz.epub_png_nav_toc}
 </a>
 }
-      pre=%{<a href="#{@md.fnl[:pre]}#{@seg_name_xhtml[@seg_name_xhtml_tracker-use]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+      pre=%{<a href="#{@seg_name_xhtml[@seg_name_xhtml_tracker-use]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_prev}>
   #{@vz.epub_png_nav_pre}
 </a>
 } if f_pre==true
-      nxt=%{<a href="#{@md.fnl[:pre]}#{@seg_name_xhtml[@seg_name_xhtml_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_next}>
+      nxt=%{<a href="#{@seg_name_xhtml[@seg_name_xhtml_tracker+1]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}" target="_top" #{@vz.js_next}>
     #{@vz.epub_png_nav_nxt}
   </a>
 } if f_nxt==true
@@ -1861,7 +1861,7 @@ WOK
       fn='doc' if fn.to_s.empty? #you may wish to reconsider, sends to 'doc' where no segment info
       %{
   <p class="endnote">
-    #{@endnote_part_a}#{@md.fnl[:pre]}#{fn}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}#{@endnote_part_b}
+    #{@endnote_part_a}#{fn}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}#{@endnote_part_b}
   </p>
 }
     end
diff --git a/lib/sisu/v3/epub_segments.rb b/lib/sisu/v3/epub_segments.rb
index a21a64a7..ed8c8d39 100644
--- a/lib/sisu/v3/epub_segments.rb
+++ b/lib/sisu/v3/epub_segments.rb
@@ -231,7 +231,7 @@ WOK
             and dob.ln==4
               if tracking != 0
                 Seg.new(@md).tail
-                segfilename="#{dir_epub_cont}/#{@md.fnl[:pre]}#{@@seg_name_xhtml[tracking-1]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}"
+                segfilename="#{dir_epub_cont}/#{@@seg_name_xhtml[tracking-1]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}"
                 output_epub_cont_seg=File.new(segfilename,'w') if @@seg_name_xhtml[tracking-1]
                 if dob.is=='heading' \
                 or @@seg_name_xhtml[tracking-1] !~/endnotes|book_index|metadata/
@@ -252,7 +252,7 @@ WOK
                 heading_art(dob)
                 head(dob)
                 if @@seg_name_xhtml[tracking]=='sisu_manifest' # this is for manifest, includes navigation bug
-                  segfilename="#{dir_epub_cont}/#{@md.fnl[:pre]}#{@@seg_name_xhtml[tracking]}#{@md.fnl[:mid]}#{Sfx[:epub_xhtml]}#{@md.fnl[:post]}"
+                  segfilename="#{dir_epub_cont}/#{@@seg_name_xhtml[tracking]}#{@md.lang_code_insert}#{Sfx[:epub_xhtml]}"
                   output_epub_cont_seg=File.new(segfilename,'w')
                   Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc,'sisu_manifest').output
                   Seg.new.reinitialise #BUG navigation bug with items following metadata, and occurring before manifest, this becomes a bug ... work area for book index, FIX
diff --git a/lib/sisu/v3/html.rb b/lib/sisu/v3/html.rb
index 8d10b7da..b569653f 100644
--- a/lib/sisu/v3/html.rb
+++ b/lib/sisu/v3/html.rb
@@ -322,7 +322,7 @@ WOK
         title=if dob.obj !~/Metadata/; linkname
         else
           link='metadata'
-          %{<b><a href="#{@md.fnl[:pre]}#{link}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}">#{linkname}</a></b>}
+          %{<b><a href="#{link}#{@md.lang_code_insert}#{Sfx[:html]}">#{linkname}</a></b>}
         end
         toc={}
         txt_obj={ txt: title }
@@ -409,13 +409,13 @@ WOK
         linkname,ocn=dob.obj.strip,dob.ocn
         p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn) if ocn
         if dob.ln ==4
-          seg_link=%{  <a href="#{@md.fnl[:pre]}#{dob.name}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top">
+          seg_link=%{  <a href="#{dob.name}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top">
     #{dob.obj}
   </a> }
           @@seg_url=dob.name
         elsif dob.obj =~/\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+/
           seg_link=dob.obj.gsub(/^(\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+)(.*)/,
-            %{<a href="#{@md.fnl[:pre]}\\1#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" } +
+            %{<a href="\\1#{@md.lang_code_insert}#{Sfx[:html]}" } +
             %{target="_top">\\1 \\2</a> })
         end
         p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn) if ocn
@@ -451,7 +451,7 @@ WOK
         if ocn \
         and ocn !~/#/
           p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{ocn}">
     #{linkname}
   </a>}
           txt_obj={ txt: lnk_n_txt }
@@ -472,7 +472,7 @@ WOK
         if ocn \
         and ocn !~/#/
           p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{ocn}">
   #{linkname}
 </a>}
           txt_obj={ txt: lnk_n_txt }
diff --git a/lib/sisu/v3/html_format.rb b/lib/sisu/v3/html_format.rb
index a4a05293..e89b5c43 100644
--- a/lib/sisu/v3/html_format.rb
+++ b/lib/sisu/v3/html_format.rb
@@ -299,7 +299,7 @@ WOK
 <p />}
     end
     def seg_head_navigation_band(type='')
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top" alt="-&gt;">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top" alt="-&gt;">
       #{@vz.png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<table summary="table of contents segment navigation band" id="toc" width="100%" bgcolor=#{@vz.color_band1}>
@@ -318,7 +318,7 @@ WOK
       if type=~/pdf/
         @tocband_segtoc=make_scroll_seg_pdf
       end
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top" alt="-&gt;">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top" alt="-&gt;">
       #{@vz.png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<table summary="table of contents segment navigation band" id="toc" width="100%" bgcolor=#{@vz.color_band1}>
@@ -646,9 +646,9 @@ WOK
     def title_banner(title,subtitle,creator)
     end
     def dot_control_pre_next
-      pre="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-1]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
-      up="#{@md.fnl[:pre]}#{@toc}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
-      nxt="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
+      pre="#{@seg_name_html[@seg_name_html_tracker-1]}#{@md.lang_code_insert}#{Sfx[:html]}"
+      up="#{@toc}#{@md.lang_code_insert}#{Sfx[:html]}"
+      nxt="#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.lang_code_insert}#{Sfx[:html]}"
       if nxt=~/sisu_manifest\.html/
         @file=SiSU_Env::SiSU_file.new(@md) if @md
         if @file.output_dir_structure.by_language_code? \
@@ -674,8 +674,8 @@ WOK
 #{@vz.table_close}}
     end
     def dot_control_pre
-      pre="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-2]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
-      up="#{@md.fnl[:pre]}#{@toc}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
+      pre="#{@seg_name_html[@seg_name_html_tracker-2]}#{@md.lang_code_insert}#{Sfx[:html]}"
+      up="#{@toc}#{@md.lang_code_insert}#{Sfx[:html]}"
       nxt="#{@md.fn[:toc]}"
       %{<table summary="segment hidden control pre" width="100%" border="0" cellpadding="0" bgcolor=#{@vz.color_grey_pale} align="center">
 <tr><td align="left">
@@ -697,17 +697,17 @@ WOK
     def toc_nav(f_pre=false,f_nxt=false,use=1)
       pre=nxt=''
       toc=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@toc}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@toc}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_toc}
   </a>
 </td>}
       pre=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-use]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker-use]}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_pre}
   </a>
 </td>} if f_pre==true
       nxt=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top" #{@vz.js_next}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top" #{@vz.js_next}>
     #{@vz.png_nav_nxt}
   </a>
 </td>} if f_nxt==true
@@ -1281,7 +1281,7 @@ WOK
       fn='doc' if fn.to_s.empty? #you may wish to reconsider, sends to 'doc' where no segment info
       %{
   <p class="endnote">
-    #{@endnote_part_a}#{@md.fnl[:pre]}#{fn}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}#{@endnote_part_b}
+    #{@endnote_part_a}#{fn}#{@md.lang_code_insert}#{Sfx[:html]}#{@endnote_part_b}
   </p>
 }
     end
diff --git a/lib/sisu/v3/html_minitoc.rb b/lib/sisu/v3/html_minitoc.rb
index 7390ee7c..3a4f8fc5 100644
--- a/lib/sisu/v3/html_minitoc.rb
+++ b/lib/sisu/v3/html_minitoc.rb
@@ -115,7 +115,7 @@
         title=unless txt.obj =~/Document Information/; txt.obj
         else
           link='metadata'
-          %{<b><a href="#{@md.fnl[:pre]}#{link}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}">#{txt.obj}</a></b>}
+          %{<b><a href="#{link}#{@md.lang_code_insert}#{Sfx[:html]}">#{txt.obj}</a></b>}
         end
         toc={}
         txt_obj={ txt: title }
@@ -148,13 +148,13 @@
         txt=@data
         unless txt =~/~metadata/
           if txt.ln ==4
-            seg_link=%{  <a href="#{@md.fnl[:pre]}#{txt.name}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" target="_top">
+            seg_link=%{  <a href="#{txt.name}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top">
     #{txt.obj}
   </a> }
             @@seg_url=txt.name
           elsif txt.obj =~/\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+/
             seg_link=txt.obj.gsub(/^(\d+.\d+.\d+.\d+|\d+.\d+.\d+|\d+.\d+|\d+)(.*)/,
-              %{<a href="#{@md.fnl[:pre]}\\2#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}" } +
+              %{<a href="\\2#{@md.lang_code_insert}#{Sfx[:html]}" } +
               %{target="_top">\\1 \\2</a> })
           end
           txt_obj={ txt: seg_link }
@@ -170,7 +170,7 @@
           txt.obj.gsub!(@pat_strip_heading_name,'\1')
         end
         toc={}
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{txt.ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{txt.ocn}">
     #{txt.obj}
   </a>}
           txt_obj={ txt: lnk_n_txt }
@@ -185,7 +185,7 @@
           txt.obj.gsub!(@pat_strip_heading_name,'\1')
         end
         toc={}
-          lnk_n_txt=%{  <a href="#{@md.fnl[:pre]}#{@@seg_url}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}##{txt.ocn}">
+          lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{txt.ocn}">
     #{txt.obj}
   </a>}
           txt_obj={ txt: lnk_n_txt }
diff --git a/lib/sisu/v3/html_segments.rb b/lib/sisu/v3/html_segments.rb
index fb9b01cb..ccd48407 100644
--- a/lib/sisu/v3/html_segments.rb
+++ b/lib/sisu/v3/html_segments.rb
@@ -237,7 +237,7 @@ module SiSU_HTML_seg
                   mkdir_p(@file.output_path.html_seg.dir) if File.writable?("#{@file.output_path.base.dir}/.")
                 end
                 Seg.new(@md).tail
-                segfilename="#{@file.output_path.html_seg.dir}/#{@md.fnl[:pre]}#{@@seg_name_html[tracking-1]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
+                segfilename="#{@file.output_path.html_seg.dir}/#{@@seg_name_html[tracking-1]}#{@md.lang_code_insert}#{Sfx[:html]}"
                 output_seg_file=File.new(segfilename,'w') if @@seg_name_html[tracking-1]
                 minitoc=(@env.html_minitoc?) \
                 ? @minitoc \
diff --git a/lib/sisu/v3/param.rb b/lib/sisu/v3/param.rb
index 5d93523e..5d35bf3d 100644
--- a/lib/sisu/v3/param.rb
+++ b/lib/sisu/v3/param.rb
@@ -905,9 +905,9 @@ module SiSU_Param
       @doc={ lv: [] }
       @doc[:fns],@doc[:fnb],@doc[:scr_suffix]='','',''
       @@publisher='SiSU scribe'
-      attr_accessor :make,:env,:path,:file,:fn,:fns,:fnb,:fnn,:fnt,:fnl,:flv,:fnz,:fnstex,:ocn,:sfx_src,:pdf,:file_type,:dir_out,:dir_tex,:dir_lout,:txt_path,:site_skin,:sisu,:sisu_version,:ruby_version,:title,:subtitle,:full_title,:html_title,:subtitle_tex,:creator,:classify,:author_home,:author,:author_title,:author_nationality,:authors,:authorship,:translator,:illustrator,:prepared_by,:digitized_by,:subject,:description,:publisher,:current_publisher,:contributor,:date,:date_created,:date_issued,:date_available,:date_valid,:date_modified,:date_translated,:date_added_to_site,:date_scheme,:date_created_scheme,:date_issued_scheme,:date_available_scheme,:date_valid_scheme,:date_modified_scheme,:type,:format,:identifier,:source,:language,:language_original,:relation,:coverage,:rights,:keywords,:comments,:abstract,:cls_loc,:cls_dewey,:cls_pg,:cls_isbn,:papersize,:papersize_array,:toc,:lv1,:lv2,:lv3,:lv4,:lv5,:lv6,:lvs,:pagenew,:pagebreak,:num_top,:toc_lev_limit,:flag_endnotes,:flag_auto_endnotes,:flag_separate_endnotes,:flag_separate_endnotes_make,:markup,:markup_instruction,:markup_version,:markup_declared,:flag_tables,:vocabulary,:doc_skin,:doc_css,:yaml,:lnk,:links,:prefix_a,:prefix_b,:suffix,:information,:contact,:icon,:image,:ad_url,:ad_png,:ad_alt,:ad_began,:flag_promo,:promo,:ad_home,:stmp,:stmpd,:sc_filename,:sc_number,:sc_date,:sc_time,:sc_info,:yamladdr,:locale,:wc_lines,:wc_words,:wc_bytes,:file_encoding,:filesize,:user,:home,:hostname,:pwd,:firstseg,:programs,:author_copymark,:i18n,:lang,:en,:notes,:dgst,:dgst_skin,:generated,:tags,:tag_array,:concord_make,:seg_names,:seg_autoname_safe,:set_header_title,:set_heading_top,:set_heading_seg,:heading_seg_first,:heading_seg_first_flag,:base_program,:ec,:opt,:sem_tag,:book_idx,:topic_register,:topic_register_array,:original,:writing_focus,:audio,:daisy
+      attr_accessor :make,:env,:path,:file,:fn,:fns,:fnb,:fnn,:fnt,:fnl,:flv,:fnz,:fnstex,:ocn,:sfx_src,:pdf,:file_type,:dir_out,:dir_tex,:dir_lout,:txt_path,:site_skin,:sisu,:sisu_version,:ruby_version,:title,:subtitle,:full_title,:html_title,:subtitle_tex,:creator,:classify,:author_home,:author,:author_title,:author_nationality,:authors,:authorship,:translator,:illustrator,:prepared_by,:digitized_by,:subject,:description,:publisher,:current_publisher,:contributor,:date,:date_created,:date_issued,:date_available,:date_valid,:date_modified,:date_translated,:date_added_to_site,:date_scheme,:date_created_scheme,:date_issued_scheme,:date_available_scheme,:date_valid_scheme,:date_modified_scheme,:type,:format,:identifier,:source,:language,:language_original,:relation,:coverage,:rights,:keywords,:comments,:abstract,:cls_loc,:cls_dewey,:cls_pg,:cls_isbn,:papersize,:papersize_array,:toc,:lv1,:lv2,:lv3,:lv4,:lv5,:lv6,:lvs,:pagenew,:pagebreak,:num_top,:toc_lev_limit,:flag_endnotes,:flag_auto_endnotes,:flag_separate_endnotes,:flag_separate_endnotes_make,:markup,:markup_instruction,:markup_version,:markup_declared,:flag_tables,:vocabulary,:doc_skin,:doc_css,:yaml,:lnk,:links,:prefix_a,:prefix_b,:suffix,:information,:contact,:icon,:image,:ad_url,:ad_png,:ad_alt,:ad_began,:flag_promo,:promo,:ad_home,:stmp,:stmpd,:sc_filename,:sc_number,:sc_date,:sc_time,:sc_info,:yamladdr,:locale,:wc_lines,:wc_words,:wc_bytes,:file_encoding,:filesize,:user,:home,:hostname,:pwd,:firstseg,:programs,:author_copymark,:i18n,:lang,:lang_code_insert,:en,:notes,:dgst,:dgst_skin,:generated,:tags,:tag_array,:concord_make,:seg_names,:seg_autoname_safe,:set_header_title,:set_heading_top,:set_heading_seg,:heading_seg_first,:heading_seg_first_flag,:base_program,:ec,:opt,:sem_tag,:book_idx,:topic_register,:topic_register_array,:original,:writing_focus,:audio,:daisy
       def initialize(fns_array,opt)
-        @env=@path,@file=@fn=@fns=@fnb=@fnn=@fnt=@fnl=@flv=@fnz=@fnstex=@ocn=@sfx_src=@pdf=@file_type=@dir_out=@dir_tex=@dir_lout=@txt_path=@make=@flag_endnotes=@flag_auto_endnotes=@flag_separate_endnotes=@flag_separate_endnotes_make=@site_skin=@sisu=@sisu_version=@ruby_version=@title=@subtitle=@full_title=@html_title=@subtitle_tex=@creator=@classify=@author_home=@author=@author_title=@author_nationality=@translator=@illustrator=@prepared_by=@digitized_by=@subject=@description=@publisher=@current_publisher=@contributor=@date=@date_created=@date_issued=@date_available=@date_valid=@date_modified=@date_translated=@date_added_to_site=@date_scheme=@date_created_scheme=@date_issued_scheme=@date_available_scheme=@date_valid_scheme=@date_modified_scheme=@type=@format=@identifier=@source=@language=@language_original=@relation=@coverage=@rights=@keywords=@comments=@abstract=@cls_loc=@cls_dewey=@cls_pg=@cls_isbn=@papersize=@toc=@lv1=@lv2=@lv3=@lv4=@lv5=@lv6=@pagenew=@pagebreak=@num_top=@toc_lev_limit=@flag_tables=@vocabulary=@doc_skin=@doc_css=@yaml=@lnk=@links=@prefix_a=@prefix_b=@suffix=@information=@contact=@icon=@ad_url=@ad_png=@ad_alt=@ad_began=@promo=@ad_home=@stmp=@stmpd=@sc_filename=@sc_number=@sc_date=@sc_time=@sc_info=@yamladdr=@locale=@wc_lines=@wc_words=@wc_bytes=@file_encoding=@filesize=@firstseg=@programs=@author_copymark=@i18n=@lang=@en=@notes=@dgst=@dgst_skin=@generated=@heading_seg_first=@base_program=@topic_register=@original=@writing_focus=@audio=nil
+        @env=@path,@file=@fn=@fns=@fnb=@fnn=@fnt=@fnl=@flv=@fnz=@fnstex=@ocn=@sfx_src=@pdf=@file_type=@dir_out=@dir_tex=@dir_lout=@txt_path=@make=@flag_endnotes=@flag_auto_endnotes=@flag_separate_endnotes=@flag_separate_endnotes_make=@site_skin=@sisu=@sisu_version=@ruby_version=@title=@subtitle=@full_title=@html_title=@subtitle_tex=@creator=@classify=@author_home=@author=@author_title=@author_nationality=@translator=@illustrator=@prepared_by=@digitized_by=@subject=@description=@publisher=@current_publisher=@contributor=@date=@date_created=@date_issued=@date_available=@date_valid=@date_modified=@date_translated=@date_added_to_site=@date_scheme=@date_created_scheme=@date_issued_scheme=@date_available_scheme=@date_valid_scheme=@date_modified_scheme=@type=@format=@identifier=@source=@language=@language_original=@relation=@coverage=@rights=@keywords=@comments=@abstract=@cls_loc=@cls_dewey=@cls_pg=@cls_isbn=@papersize=@toc=@lv1=@lv2=@lv3=@lv4=@lv5=@lv6=@pagenew=@pagebreak=@num_top=@toc_lev_limit=@flag_tables=@vocabulary=@doc_skin=@doc_css=@yaml=@lnk=@links=@prefix_a=@prefix_b=@suffix=@information=@contact=@icon=@ad_url=@ad_png=@ad_alt=@ad_began=@promo=@ad_home=@stmp=@stmpd=@sc_filename=@sc_number=@sc_date=@sc_time=@sc_info=@yamladdr=@locale=@wc_lines=@wc_words=@wc_bytes=@file_encoding=@filesize=@firstseg=@programs=@author_copymark=@i18n=@lang=@lang_code_insert=@en=@notes=@dgst=@dgst_skin=@generated=@heading_seg_first=@base_program=@topic_register=@original=@writing_focus=@audio=nil
         @data,@path,@fns,@opt=fns_array,opt.pth,opt.fns,opt #@data used as data
         @flag_tables,@set_header_title,@set_heading_top,@set_heading_seg,@heading_seg_first_flag,@flag_promo,@book_idx=false,false,false,false,false,false,false
         @seg_autoname_safe=true
@@ -918,6 +918,9 @@ module SiSU_Param
         @flv,@lang,@seg_names,@tags,@tag_array,@tag_a,@ec[:image],@ec[:audio],@ec[:multimedia]=Array.new(9){[]}
         @authors,@topic_register_array,@papersize_array=[],[],[]
         @lvs=[nil,0,0,0,0,0,0]
+        @lang_code_insert=(@opt.dir_structure_by =~/language/) \
+        ? '' \
+        : ".#{@opt.lng}"
         @rgx_image=/(?:^|[^_\\])\{\s*(\S+?\.(?:png|jpg|gif))/
         @rgx_audio=/\{\s*(\S+?\.(?:mp3|ogg))/
         @rgx_mm=/\{\s*(\S+?\.(?:ogg|mpeg))/ #expand and distinguish ogg
@@ -1318,7 +1321,7 @@ module SiSU_Param
           @language[:code]=fn_set_lang[:c]
           @language[:name]=fn_set_lang[:n]
         end
-        @fnl=@env.i18n.lang_filename(fn_set_lang[:n])
+        @fnl=@env.i18n.lang_filename(fn_set_lang[:c])
 #fix
 #       @flv.each do |l|
 #         lang=SiSU_Env::Standardise_language.new.file_to_language(l)
diff --git a/lib/sisu/v3/xml_format.rb b/lib/sisu/v3/xml_format.rb
index a3539f60..58b3f880 100644
--- a/lib/sisu/v3/xml_format.rb
+++ b/lib/sisu/v3/xml_format.rb
@@ -537,7 +537,7 @@ WOK
       if type=~/pdf/
         @tocband_segtoc=make_scroll_seg_pdf
       end
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" alt="-&gt;">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" alt="-&gt;">
       #{@vz.png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<table summary="table of contents segment navigation band" id="toc" width="100%" bgcolor=#{@vz.color_band1}>
@@ -556,7 +556,7 @@ WOK
       if type=~/pdf/
         @tocband_segtoc=make_scroll_seg_pdf
       end
-      firstseg=%{<a href="#{@md.fnl[:pre]}#{@md.firstseg}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" alt="-&gt;">
+      firstseg=%{<a href="#{@md.firstseg}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" alt="-&gt;">
       #{@vz.png_nav_nxt}
     </a>} if @md.firstseg =~/\S+/
       %{<table summary="table of contents segment navigation band" id="toc" width="100%" bgcolor=#{@vz.color_band1}>
@@ -891,17 +891,17 @@ WOK
     def dot_control_pre_next
       %{<table summary="segment hidden control pre and next" width="100%" border="0" cellpadding="0" bgcolor=#{@vz.color_grey_pale} align="center">
 <tr><td align="left">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-1]}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker-1]}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_dot_pre}
   </a>
 </td>
 <td align="center">
-  <a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@index}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_dot_toc}
   </a>
 </td>
 <td align="right">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_next}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_next}>
     #{@vz.png_nav_dot_nxt}
   </a>
 #{@vz.table_close}}
@@ -909,12 +909,12 @@ WOK
     def dot_control_pre
       %{<table summary="segment hidden control pre" width="100%" border="0" cellpadding="0" bgcolor=#{@vz.color_grey_pale} align="center">
 <tr><td align="left">
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-2]}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker-2]}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_dot_pre}
   </a>
 </td>
 <td align="center">
-  <a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@index}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_dot_toc}
   </a>
 </td>
@@ -927,17 +927,17 @@ WOK
     def toc_nav(f_pre=false,f_nxt=false,use=1)
       pre=nxt=''
       toc=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@index}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_toc}>
+  <a href="#{@index}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_toc}>
     #{@vz.png_nav_toc}
   </a>
 </td>}
       pre=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker-use]}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_prev}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker-use]}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_prev}>
     #{@vz.png_nav_pre}
   </a>
 </td>} if f_pre==true
       nxt=%{<td align="center" bgcolor=#{@vz.color_band1}>
-  <a href="#{@md.fnl[:pre]}#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.fnl[:mid]}#{Sfx[:xhtml]}#{@md.fnl[:post]}" target="_top" #{@vz.js_next}>
+  <a href="#{@seg_name_html[@seg_name_html_tracker+1]}#{@md.lang_code_insert}#{Sfx[:xhtml]}" target="_top" #{@vz.js_next}>
     #{@vz.png_nav_nxt}
   </a>
 </td>} if f_nxt==true
@@ -1479,7 +1479,7 @@ WOK
       fn='doc' if fn.empty? #you may wish to reconsider, sends to 'doc' where no segment info # Sfx[:html] or Sfx[:xhtml] ?
       %{
   <p class="endnote">
-    #{@endnote_part_a}#{@md.fnl[:pre]}#{fn}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}#{@endnote_part_b}
+    #{@endnote_part_a}#{fn}#{@md.lang_code_insert}#{Sfx[:html]}#{@endnote_part_b}
   </p>
 }
     end