From d79ff2672cfa52138f10eae55b6d0c4c3849fb31 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Mon, 25 Feb 2008 00:35:15 +0000
Subject: sisu-0.66.0 done

---
 CHANGELOG | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 9f1e2c45..8d4a255a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,9 +11,9 @@ Reverse Chronological:
 
 %% sisu_0.66.0.orig.tar.gz (2008-02-24:07/7)
 http://www.jus.uio.no/sisu/pkg/src/sisu_0.66.0.orig.tar.gz
-  sisu_0.66.0.orig.tar.gz
-  sisu_0.66.0-1.dsc
-  sisu_0.66.0-1.diff.gz
+  b45d81d949590a9b24924589bc98032b 1492653 sisu_0.66.0.orig.tar.gz
+  3d02ba34822075bea890eaa3ff666ef9 629 sisu_0.66.0-1.dsc
+  161a19d61d48713be4890bc9d00bed18 146339 sisu_0.66.0-1.diff.gz
 
   * ruby identify program files as utf-8
     # coding: utf-8
-- 
cgit v1.2.3


From 439a0b77a8bdfba6ad85218c1db8ead9c17c69f9 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Sat, 1 Mar 2008 16:33:41 +0000
Subject: extend semantic shorthand

---
 lib/sisu/v0/shared_xml.rb | 110 +++++++++++++++++++++++++++-------------------
 1 file changed, 65 insertions(+), 45 deletions(-)

diff --git a/lib/sisu/v0/shared_xml.rb b/lib/sisu/v0/shared_xml.rb
index abc6cc1a..c93eff5b 100644
--- a/lib/sisu/v0/shared_xml.rb
+++ b/lib/sisu/v0/shared_xml.rb
@@ -161,35 +161,46 @@ module SiSU_XML_munge
       @dp=SiSU_Env::Info_env.new.digest.pattern
       @url_brace=SiSU_Viz::Skin.new.url_decoration
       if @md.sem_tag
+        #@ab ||=SiSU_Viz::Skin.new.semantic_tags.default
         @ab ||=semantic_tags.default
       end
     end
     def semantic_tags
       def default
         {
-          :pub =>  'publication',
-          :ref =>  'reference',
-          :desc => 'description',
-          :conv => 'convention',
-          :vol =>  'volume',
-          :pg =>   'page',
-          :ct =>   'cite',
-          :cty =>  'city',
-          :org =>  'organization',
-          :d =>    'date',
-          :t =>    'title',
-          :a =>    'author',
-          :n =>    'name',
-          :fn =>   'firstname',
-          :f =>    'firstname',
-          :mn =>   'middlename',
-          :m =>    'middlename',
-          :ln =>   'lastname',
-          :l =>    'lastname',
-          :i =>    'initials',
-          :q =>    'quote',
-          :y =>    'year',
-          :ab =>   'abreviation',
+          :pub =>     'publication',
+          :conv =>    'convention',
+          :vol =>     'volume',
+          :pg =>      'page',
+          :cty =>     'city',
+          :org =>     'organization',
+          :uni =>     'university',
+          :dept =>    'department',
+          :fac =>     'faculty',
+          :inst =>    'institute',
+          :co =>      'company',
+          :com =>     'company',
+          :conv =>    'convention',
+          :dt =>      'date',
+          :y =>       'year',
+          :m =>       'month',
+          :d =>       'day',
+          :ti =>      'title',
+          :au =>      'author',
+          :ed =>      'editor', #editor?
+          :v =>       'version', #edition
+          :n =>       'name',
+          :fn =>      'firstname',
+          :mn =>      'middlename',
+          :ln =>      'lastname',
+          :in =>      'initials',
+          :qt =>      'quote',
+          :ct =>      'cite',
+          :ref =>     'reference',
+          :ab =>      'abreviation',
+          :def =>     'define',
+          :desc =>    'description',
+          :trans =>   'translate',
         }
       end
       self
@@ -460,7 +471,7 @@ module SiSU_XML_munge
       para
     end
     def xml_sem_block_paired(matched) # colon depth: many, recurs
-      matched.gsub!(/\b(a):\{(.+?)\}:\1\b/m,   %{<sem:#{@ab[:a]} depth="many">\\2</sem:#{@ab[:a]}>}) # sem :
+      matched.gsub!(/\b(au):\{(.+?)\}:\1\b/m,   %{<sem:#{@ab[:au]} depth="many">\\2</sem:#{@ab[:au]}>}) # sem :
       matched.gsub!(/\b(vol):\{(.+?)\}:\1\b/m, %{<sem:#{@ab[:vol]} depth="many">\\2</sem:#{@ab[:vol]}>}) # sem :
       matched.gsub!(/\b(pub):\{(.+?)\}:\1\b/m, %{<sem:#{@ab[:pub]} depth="many">\\2</sem:#{@ab[:pub]}>}) # sem :
       matched.gsub!(/\b(ref):\{(.+?)\}:\1\b/m, %{<sem:#{@ab[:ref]} depth="many">\\2</sem:#{@ab[:ref]}>}) # sem :
@@ -469,7 +480,7 @@ module SiSU_XML_munge
       matched.gsub!(/\b(ct):\{(.+?)\}:\1\b/m,  %{<sem:#{@ab[:ct]} depth="many">\\2</sem:#{@ab[:ct]}>}) # sem :
       matched.gsub!(/\b(cty):\{(.+?)\}:\1\b/m, %{<sem:#{@ab[:cty]} depth="many">\\2</sem:#{@ab[:cty]}>}) # sem :
       matched.gsub!(/\b(org):\{(.+?)\}:\1\b/m, %{<sem:#{@ab[:org]} depth="many">\\2</sem:#{@ab[:org]}>}) # sem :
-      matched.gsub!(/\b(d):\{(.+?)\}:\1\b/m,   %{<sem:#{@ab[:d]} depth="many">\\2</sem:#{@ab[:d]}>}) # sem :
+      matched.gsub!(/\b(dt):\{(.+?)\}:\1\b/m,   %{<sem:#{@ab[:dt]} depth="many">\\2</sem:#{@ab[:dt]}>}) # sem :
       matched.gsub!(/\b(n):\{(.+?)\}:\1\b/m,   %{<sem:#{@ab[:n]} depth="many">\\2</sem:#{@ab[:n]}>}) # sem :
       matched.gsub!(/([a-z]+(?:[_:.][a-z]+)*)(?::\{(.+?)\}:\1)/m,'<sem:\1 depth="many">\2</sem:\1>') # sem :
     end
@@ -479,28 +490,37 @@ module SiSU_XML_munge
         para.gsub!(/([a-z]+(?:[_:.][a-z]+)*)(?::\{(.+?)\}:\1)/m) {|c| xml_sem_block_paired(c) } # sem :
         para.gsub!(/([a-z]+(?:[_:.][a-z]+)*)(?::\{(.+?)\}:\1)/m) {|c| xml_sem_block_paired(c) } # sem :
         #colon one / single / flat / shallow
-        para.gsub!(/:\{(.+?)\}:a\b/m,        %{<sem:#{@ab[:a]} depth="one">\\1</sem:#{@ab[:a]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:n\b/m,        %{<sem:#{@ab[:n]} depth="one">\\1</sem:#{@ab[:n]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:t\b/m,        %{<sem:#{@ab[:t]} depth="one">\\1</sem:#{@ab[:t]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:ref\b/m,      %{<sem:#{@ab[:ref]} depth="one">\\1</sem:#{@ab[:ref]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:desc\b/m,     %{<sem:#{@ab[:desc]} depth="one">\\1</sem:#{@ab[:desc]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:cty\b/m,      %{<sem:#{@ab[:cty]} depth="one">\\1</sem:#{@ab[:cty]}>}) # sem :
-        para.gsub!(/:\{(.+?)\}:org\b/m,      %{<sem:#{@ab[:org]} depth="one">\\1</sem:#{@ab[:org]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:au\b/m,             %{<sem:#{@ab[:au]} depth="one">\\1</sem:#{@ab[:au]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:n\b/m,              %{<sem:#{@ab[:n]} depth="one">\\1</sem:#{@ab[:n]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:ti\b/m,             %{<sem:#{@ab[:ti]} depth="one">\\1</sem:#{@ab[:ti]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:ref\b/m,            %{<sem:#{@ab[:ref]} depth="one">\\1</sem:#{@ab[:ref]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:desc\b/m,           %{<sem:#{@ab[:desc]} depth="one">\\1</sem:#{@ab[:desc]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:cty\b/m,            %{<sem:#{@ab[:cty]} depth="one">\\1</sem:#{@ab[:cty]}>}) # sem :
+        para.gsub!(/:\{(.+?)\}:org\b/m,            %{<sem:#{@ab[:org]} depth="one">\\1</sem:#{@ab[:org]}>}) # sem :
         para.gsub!(/:\{(.+?)\}:([a-z]+(?:[_:.][a-z]+)*)/m,'<sem:\2 depth="one">\1</sem:\2>') # sem :
         #semicolon zero / none
-        para.gsub!(/;\{([^}]+(?![;]))\};t\b/m,   %{<sem:#{@ab[:t]} depth="zero">\\1</sem:#{@ab[:t]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};q\b/m,   %{<sem:#{@ab[:q]} depth="zero">\\1</sem:#{@ab[:q]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};ref\b/m, %{<sem:#{@ab[:ref]} depth="zero">\\1</sem:#{@ab[:ref]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};desc\b/m,%{<sem:#{@ab[:desc]} depth="zero">\\1</sem:#{@ab[:desc]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};y\b/m,   %{<sem:#{@ab[:y]} depth="zero">\\1</sem:#{@ab[:y]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};ab\b/m,  %{<sem:#{@ab[:ab]} depth="zero">\\1</sem:#{@ab[:ab]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};pg\b/m,  %{<sem:#{@ab[:pg]} depth="zero">\\1</sem:#{@ab[:pg]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};fn?\b/m, %{<sem:#{@ab[:fn]} depth="zero">\\1</sem:#{@ab[:fn]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};mn?\b/m, %{<sem:#{@ab[:mn]} depth="zero">\\1</sem:#{@ab[:mn]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};ln?\b/m, %{<sem:#{@ab[:ln]} depth="zero">\\1</sem:#{@ab[:ln]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};i\b/m,   %{<sem:#{@ab[:i]} depth="zero">\\1</sem:#{@ab[:i]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};org\b/m, %{<sem:#{@ab[:org]} depth="zero">\\1</sem:#{@ab[:org]}>}) # sem ;
-        para.gsub!(/;\{([^}]+(?![;]))\};cty\b/m, %{<sem:#{@ab[:cty]} depth="zero">\\1</sem:#{@ab[:cty]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};ti\b/m,    %{<sem:#{@ab[:ti]} depth="zero">\\1</sem:#{@ab[:ti]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};qt\b/m,    %{<sem:#{@ab[:qt]} depth="zero">\\1</sem:#{@ab[:qt]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};ref\b/m,   %{<sem:#{@ab[:ref]} depth="zero">\\1</sem:#{@ab[:ref]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};ed\b/m,    %{<sem:#{@ab[:ed]} depth="zero">\\1</sem:#{@ab[:ed]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};v\b/m,     %{<sem:#{@ab[:v]} depth="zero">\\1</sem:#{@ab[:v]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};desc\b/m,  %{<sem:#{@ab[:desc]} depth="zero">\\1</sem:#{@ab[:desc]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};def\b/m,   %{<sem:#{@ab[:def]} depth="zero">\\1</sem:#{@ab[:def]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};trans\b/m, %{<sem:#{@ab[:trans]} depth="zero">\\1</sem:#{@ab[:trans]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};y\b/m,     %{<sem:#{@ab[:y]} depth="zero">\\1</sem:#{@ab[:y]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};ab\b/m,    %{<sem:#{@ab[:ab]} depth="zero">\\1</sem:#{@ab[:ab]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};pg\b/m,    %{<sem:#{@ab[:pg]} depth="zero">\\1</sem:#{@ab[:pg]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};fn?\b/m,   %{<sem:#{@ab[:fn]} depth="zero">\\1</sem:#{@ab[:fn]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};mn?\b/m,   %{<sem:#{@ab[:mn]} depth="zero">\\1</sem:#{@ab[:mn]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};ln?\b/m,   %{<sem:#{@ab[:ln]} depth="zero">\\1</sem:#{@ab[:ln]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};in\b/m,    %{<sem:#{@ab[:in]} depth="zero">\\1</sem:#{@ab[:in]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};uni\b/m,   %{<sem:#{@ab[:uni]} depth="zero">\\1</sem:#{@ab[:uni]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};fac\b/m,   %{<sem:#{@ab[:fac]} depth="zero">\\1</sem:#{@ab[:fac]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};inst\b/m,  %{<sem:#{@ab[:inst]} depth="zero">\\1</sem:#{@ab[:inst]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};dept\b/m,  %{<sem:#{@ab[:dpt]} depth="zero">\\1</sem:#{@ab[:dept]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};org\b/m,   %{<sem:#{@ab[:org]} depth="zero">\\1</sem:#{@ab[:org]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};com?\b/m,  %{<sem:#{@ab[:com]} depth="zero">\\1</sem:#{@ab[:com]}>}) # sem ;
+        para.gsub!(/;\{([^}]+(?![;]))\};cty\b/m,   %{<sem:#{@ab[:cty]} depth="zero">\\1</sem:#{@ab[:cty]}>}) # sem ;
         para.gsub!(/;\{([^}]+(?![;]))\};([a-z]+(?:[_:.][a-z]+)*)/m,'<sem:\2 depth="zero">\1</sem:\2>') # sem ;
       end
       para
-- 
cgit v1.2.3


From cb0a9b1b6da525915ed0e6a7322d4ca492bfc231 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Fri, 14 Mar 2008 01:36:01 +0000
Subject: track a couple of questions

---
 .../sisu_markup_samples/sisu_manual/sisu_faq.sst   | 44 +++++++++++++++++++---
 1 file changed, 38 insertions(+), 6 deletions(-)

diff --git a/data/doc/sisu/sisu_markup_samples/sisu_manual/sisu_faq.sst b/data/doc/sisu/sisu_markup_samples/sisu_manual/sisu_faq.sst
index 795367d3..f7fead86 100644
--- a/data/doc/sisu/sisu_markup_samples/sisu_manual/sisu_faq.sst
+++ b/data/doc/sisu/sisu_markup_samples/sisu_manual/sisu_faq.sst
@@ -6,7 +6,7 @@
 
 @creator: Ralph Amissah
 
-@rights: Copyright (C) Ralph Amissah 2007, part of SiSU documentation, License GPL 3
+@rights: Copyright (C) Ralph Amissah 2008, part of SiSU documentation, License GPL 3
 
 @type: information
 
@@ -18,9 +18,9 @@
 
 @date.issued: 2006-09-06
 
-@date.modified: 2007-09-16
+@date.modified: 2008-03-12
 
-@date: 2007-09-16
+@date: 2008-03-12
 
 @level: new=C; break=1; num_top=1
 
@@ -132,6 +132,16 @@ Where there are large document sets, it provides consistency in appearance in ea
 
 The excuse for going this way is, it is a waste of time to think much about appearance when working on substantive content, it is the substantive content that is relevant, not the way it looks beyond the basic informational tags - and yet you want to be able to take advantage of as many useful different ways of representing documents as are available, and for various types of output to to be/look as good as it can for each medium/format in which it is presented, (with different mediums having different focuses) and SiSU tries to achieve this from minimal markup.
 
+2~ Can the SiSU markup be used to prepare for a LaTex automatic building of an index to the work?
+
+Has not been, is of interest though the question on introducing such possibilities is how to keep them as unobtrusive as possible, and as generically relevant as possible to other output formats (which is why the focus on object numbers). Unobtrusive refers both to the markup (where there is no big problem with introducing optional extras); and, more challengingly how to minimise impact on competing ideas/interests, such allowing the addition of semantic tags which could be tied to objects, mapped against the objects that contain them, (permitting mapping and mining of content in various ways that would be largely agnostic of output format - object numbering being an attempt to move beyond output format based content locators (such as page numbers). The desire being to (be a meta markup and) maintain agnosticism as to what is being generated and in development to favor solutions of that nature. Keep bridging LaTeX, XML, SQL ... make use of objects and serialisation for mapping whether against content or meta-content (such as semantic [or additional structural] markers).
+
+2~ Can the conversion from SiSU to LaTeX be modified if we have special needs for the LaTeX, or do we need to modify the LaTeX manually?
+
+Should be possible to modify code, it is GPLv3, should be possible either to modify existing modules or write an independent module for generating bespoke latex. Generic improvements are welcome for inclusion/incorporation in the existing code base.
+
+If there are tools to generate mathematical/scientific formula from latex to images (jpg, png), the latex parser could conceivably be used to make these available to other output formats.
+
 2~ How do I create GIN or GiST index in Postgresql for use in SiSU
 
 This at present needs to be done "manually" and it is probably necessary to alter the sample search form. The following is a helpful response from one of the contributors of GiN to Postgresql Oleg Bartunov 2006-12-06:
@@ -175,11 +185,33 @@ Now you can search:
 
 select lid, metadata_tid, rank_cd(fts, q,2)as rank from document, plainto_tsquery('markup syntax') q where q @@ fts order by rank desc limit 10;
 
+2~ Are there some examples of using Ferret Search with a SiSU repository?
+
+Heard good things about Ferret, but have not used it. The output directory structure and content produced by SiSU is very uniform. Have looked at a couple of other engines (hyperestraier, lucene). There it was enough to identify the files that needed to be indexed and pass them to the search indexing tool. Some Unix rune doing the job, such as:
+
+code{
+
+find /home/ralph/sisu_www -type f | \
+egrep '/sisu_www/(sisu|document_archive)/.+?.html$' | \
+egrep -v '(doc|concordance).html$' | \
+estcmd gather -sd casket -
+
+}code
+
+you would have to experiment with what gives the desired result, the file doc.html is the complete text in html (there are additional smaller html segments), and plain.txt the document as a text file. It may be possible to index the text file and return the html document.
+
+
+2~ Have you had any reports of building SiSU from tar on Mac OS 10.4?
+
+None. In the early days of its release a Mac friend built and run the ruby code part that did not rely on system calls to bits like the latex engine. That is already some years back. He was not into writing or document markup, and did it as a favour at the time. I have not followed up that thread of development.
+
+It should however be possible, much of the output relies on plain ruby, and the system commands to latex etc. could be made appropriate for the underlying OS.
+
 2~ Where is version 1.0?
 
-SiSU works pretty well as it is supposed to.
-Version 1.0 will have the current markup, and directory structure.
-At this point it is largely a matter of choice as to when the name change is made.
+Most of SiSU is mature and stable.
+Version 1.0 will be based on the current markup, (more likely with optional additions rather than significant changes) and directory structure.
+At this point (semantic tagging apart) it is largely a matter of choice as to when the version change is made.
 
 The feature set for html,~{ html w3c compliance has been largely met. }~ LaTeX/pdf and opendocument is in place.
 XML, and plaintext are in order.
-- 
cgit v1.2.3


From bbd1100d9674b4d4b57e62999414beaf339ff4a5 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Sat, 22 Mar 2008 17:05:50 +0000
Subject: tex to pdf, xetex (utf8) added as alternative to pdftex

---
 CHANGELOG                    |  12 ++
 lib/sisu/v0/sysenv.rb        |  48 +++--
 lib/sisu/v0/texpdf_format.rb | 472 ++++++++++++++++++++++++++++++-------------
 3 files changed, 368 insertions(+), 164 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 8d4a255a..cf2ab222 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -9,6 +9,18 @@ Reverse Chronological:
 
 %% STABLE MANIFEST
 
+%% sisu_0.66.1.orig.tar.gz (2008-03-22:11/6)
+http://www.jus.uio.no/sisu/pkg/src/sisu_0.66.1.orig.tar.gz
+  sisu_0.66.1.orig.tar.gz
+  sisu_0.66.1-1.dsc
+  sisu_0.66.1-1.diff.gz
+
+  * tex to pdf,  xetex (utf8) added as alternative to pdftex
+    [for now special character processing is separate, consider merging common
+    parts, that is, most of it]
+
+  * debian [add] texlive-xetex
+
 %% sisu_0.66.0.orig.tar.gz (2008-02-24:07/7)
 http://www.jus.uio.no/sisu/pkg/src/sisu_0.66.0.orig.tar.gz
   b45d81d949590a9b24924589bc98032b 1492653 sisu_0.66.0.orig.tar.gz
diff --git a/lib/sisu/v0/sysenv.rb b/lib/sisu/v0/sysenv.rb
index 9cf14507..816c72b7 100644
--- a/lib/sisu/v0/sysenv.rb
+++ b/lib/sisu/v0/sysenv.rb
@@ -1,4 +1,4 @@
-# coding: utf-8
+# coding: utf-6
 =begin
 
  * Name: SiSU
@@ -647,30 +647,36 @@ module SiSU_Env
       else                        puts "\tWARN: #{program} is not installed #{program_ref}"
       end
     end
-    def latex2pdf                                                              #convert from latex to pdf
-      prog=[]
-      prog=['pdflatex','pdfetex','pdftex']
-      program_ref="\n\t\tSee http://www.tug.org/applications/pdftex/\n\t\tOn Debian this is is included in tetex-extra"
+    def tex2pdf_engine
+      prog=['xetex','xelatex','pdflatex','pdfetex','pdftex']
       @pdfetex_flag=false
       @cmd ||=''
-      tell=if @cmd =~/[MVv]/; ''
-      else                    '> /dev/null'
-      end
-      mode='batchmode'
-      #mode='nonstopmode'
+      @texpdf=nil
       prog.each do |program|
         if program_found?(program)
-          case program
-          when /pdflatex/; system("#{program} -interaction=#{mode} #@input #{tell}\n")
-          when /pdfetex/; system("#{program} -interaction=#{mode} -fmt=pdflatex #@input #{tell}\n") # debian specific paramters ?
-            #system("#{program} -interaction=batchmode -progname=pdflatex #@input\n")
-          when /pdftex/; system("#{program} -interaction=#{mode} -fmt=pdflatex #@input #{tell}\n")
-          end
+          @texpdf=program if program =~/xetex|xelatex|pdftex|pdflatex/
           @pdfetex_flag=true
           break
         end
-        unless @pdfetex_flag; puts "\tWARN: none of the following programs are installed: #{program[0]}, #{program[1]}, #{program[2]} is installed. #{program_ref}"
+      end
+      @texpdf
+    end
+    def latex2pdf                                                              #convert from latex to pdf
+      tell=if @cmd =~/[MVv]/; ''
+      else                    '> /dev/null'
+      end
+      mode='batchmode'
+      #mode='nonstopmode'
+      program_ref="\n\t\tSee http://www.tug.org/applications/pdftex/\n\t\tOn Debian this is is included in tetex-extra"
+      texpdf=tex2pdf_engine
+      if @pdfetex_flag;
+        texpdf_cmd=case texpdf
+        when /xetex/;            "#{texpdf} -interaction=#{mode} -fmt=xelatex #@input #{tell}\n"
+        when /pdftex/;           "#{texpdf} -interaction=#{mode} -fmt=pdflatex #@input #{tell}\n"
+        when /xelatex|pdflatex/; "#{texpdf} -interaction=#{mode} #@input #{tell}\n"
         end
+        system(texpdf_cmd)
+      else puts "\tWARN: none of the following programs are installed: #{program[0]}, #{program[1]}, #{program[2]} is installed. #{program_ref}"
       end
     end
     def makeinfo                                                               #texinfo
@@ -2558,11 +2564,11 @@ WOK
     end
     def images
       unless FileTest.directory?("#{@env.path.output}/_sisu")
-        mkdir_p("#{@env.path.output}/_sisu") 
+        mkdir_p("#{@env.path.output}/_sisu")
       end
       unless File.exist?("#{@env.path.output}/_sisu/image_sys") \
       or File.symlink?("#{@env.path.output}/_sisu/image_sys")
-        File.symlink("../../_sisu/image_sys", "#{@env.path.output}/_sisu/image_sys") 
+        File.symlink("../../_sisu/image_sys", "#{@env.path.output}/_sisu/image_sys")
       end
     end
     def man_forms
@@ -2657,7 +2663,7 @@ WOK
       def dbi
         if psql.host =~/(?:\S{1,3}\.){3}\S{1,3}|\S+?\.\S+/
           "DBI:Pg:database=#{psql.db};host=#{psql.host};port=#{psql.port}"
-        else "DBI:Pg:database=#{psql.db};port=#{psql.port}" 
+        else "DBI:Pg:database=#{psql.db};port=#{psql.port}"
         end
       end
       self
@@ -3138,7 +3144,7 @@ fns_array=unless fns =~/\.ssm.sst$/
     IO.readlines(fns,'')
   else IO.readlines(fns,'r:utf-8')
   end
-else 
+else
   if RUBY_VERSION < '1.9'
     IO.readlines("#{path.composite_file}/#{fns}",'')
   else IO.readlines("#{path.composite_file}/#{fns}",'r:utf-8')
diff --git a/lib/sisu/v0/texpdf_format.rb b/lib/sisu/v0/texpdf_format.rb
index 03bdd184..9e7fccde 100644
--- a/lib/sisu/v0/texpdf_format.rb
+++ b/lib/sisu/v0/texpdf_format.rb
@@ -284,6 +284,7 @@ WOK
       @dp=@@dp ||=SiSU_Env::Info_env.new.digest.pattern
       @tx=SiSU_Env::Get_init.instance.tex
       @url_brace=SiSU_Viz::Skin.new.url_decoration
+      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
     end
     def longtable_landscape
       @end_table='\end{longtable}'
@@ -432,14 +433,14 @@ WOK
       end
       @string
     end
-    def special_characters_1(para)             # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
+    def pdftex_special_characters_1(string)             # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
       #p @@utf_8.list
       #@string=Iconv.conv('ISO-8859-1', 'UTF-8', @string)
-      word=@string.scan(/\S+|\n/) #unless line =~/^(?:0~\S|%+\s)/
+      word=string.scan(/\S+|\n/) #unless line =~/^(?:0~\S|%+\s)/
       para_array=[]
-      if word
+      string=if word
         word.each do |w| # _ - / # | : ! ^ ~
-          unless para =~/^(?:0~|%+ |<!Th?¡ )/um
+          unless string =~/^(?:0~|%+ |<!Th?¡ )/um
             w.gsub!(/[\\]?~/,'<=tilde>') unless w=~/^[1-6]~|~\{|\}~|~\[|\]~|^\^~\s|~\^|\*~\S+|~#|\{t~|<~\d+;(?:[ohmu]|[0-6]:)\d+;\w\d+>/
             w.gsub!(/&#(?:126|152);/,'<=tilde>') #126 usual
             #w.gsub!(/&#(?:126|152);/,'<=tilde>') unless w=~/https?:\/\/\S+/ #126 usual
@@ -447,162 +448,334 @@ WOK
           end
           para_array << w
         end
-        para=para_array.join(' ')
-        @string=para.strip
+        string=para_array.join(' ')
+        string=string.strip
+        string
+      else ''
       end
-      @string.gsub!(/<~\d+;(?:\w|[0-6]:)\d+;[umdv]\d+><#@dp:#@dp>/,'')
-      @string.gsub!(/.+?<-#>/,'')
-      @string.gsub!(/<EOF>/,'')
-      @string.gsub!(/<ENDNOTES?>/,'')
+      string.gsub!(/<~\d+;(?:\w|[0-6]:)\d+;[umdv]\d+><#@dp:#@dp>/,'')
+      string.gsub!(/.+?<-#>/,'')
+      string.gsub!(/<EOF>/,'')
+      string.gsub!(/<ENDNOTES?>/,'')
       #problem sequence ->
-      @string.gsub!(/&(?:nbsp);/,'<=hardspace>')                                 # < SiSU special character also LaTeX
-      @string.gsub!(/&(?:lt|#060);/,'<=lt>')                                     # < SiSU special character also LaTeX
-      @string.gsub!(/&(?:gt|#062);/,'<=gt>')                                     # > SiSU special character also LaTeX
-      @string.gsub!(/&#123;/,'<=curlyopen>')                                     # { SiSU special character also LaTeX
-      @string.gsub!(/&#125;/,'<=curlyclose>')                                    # } SiSU special character also LaTeX
-      @string.gsub!(/&#(?:126|152);/,'<=tilde>')                                 # ~ SiSU special character also LaTeX
-      @string.gsub!(/&#035;/,'\#')                                               # # SiSU special character also LaTeX
-      @string.gsub!(/&#033;/,'!')                                                # ! SiSU not really special sisu character but done, also LaTeX
-      @string.gsub!(/&#042;/,'*')                                                # * should you wish to escape astrisk e.g. describing \*{bold}*
-      @string.gsub!(/&#045;/,'-')                                                # - SiSU special character also LaTeX
-      @string.gsub!(/&#043;/,'+')                                                # + SiSU special character also LaTeX
-      @string.gsub!(/&#044;/,',')                                                # + SiSU special character also LaTeX
-      @string.gsub!(/&#038;/,'<=amp>') #unless @string=~/<:code>/                   # / SiSU special character also LaTeX
-      @string.gsub!(/&#047;/,'<=slash>')                                         # / SiSU special character also LaTeX
-      @string.gsub!(/&#092;/,'<=backslash>')                                     # \ SiSU special character also LaTeX
-      @string.gsub!(/&#095;/,'<=underscore>')                                    # _ SiSU special character also LaTeX
-      @string.gsub!(/&#124;/,'|')                                                # | SiSU not really special sisu character but done, also LaTeX
-      @string.gsub!(/&#058;/,':')                                                # : SiSU not really special sisu character but done, also LaTeX
-      @string.gsub!(/&#094;|\^/,'<=caret>')                                      # ^ SiSU not really special sisu character but done, also LaTeX
-      @string.gsub!(/\#/,'<=hash>')
+      string.gsub!(/&(?:nbsp);/,'<=hardspace>')                                 # < SiSU special character also LaTeX
+      string.gsub!(/&(?:lt|#060);/,'<=lt>')                                     # < SiSU special character also LaTeX
+      string.gsub!(/&(?:gt|#062);/,'<=gt>')                                     # > SiSU special character also LaTeX
+      string.gsub!(/&#123;/,'<=curlyopen>')                                     # { SiSU special character also LaTeX
+      string.gsub!(/&#125;/,'<=curlyclose>')                                    # } SiSU special character also LaTeX
+      string.gsub!(/&#(?:126|152);/,'<=tilde>')                                 # ~ SiSU special character also LaTeX
+      string.gsub!(/&#035;/,'\#')                                               # # SiSU special character also LaTeX
+      string.gsub!(/&#033;/,'!')                                                # ! SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#042;/,'*')                                                # * should you wish to escape astrisk e.g. describing \*{bold}*
+      string.gsub!(/&#045;/,'-')                                                # - SiSU special character also LaTeX
+      string.gsub!(/&#043;/,'+')                                                # + SiSU special character also LaTeX
+      string.gsub!(/&#044;/,',')                                                # + SiSU special character also LaTeX
+      string.gsub!(/&#038;/,'<=amp>') #unless @string=~/<:code>/                   # / SiSU special character also LaTeX
+      string.gsub!(/&#047;/,'<=slash>')                                         # / SiSU special character also LaTeX
+      string.gsub!(/&#092;/,'<=backslash>')                                     # \ SiSU special character also LaTeX
+      string.gsub!(/&#095;/,'<=underscore>')                                    # _ SiSU special character also LaTeX
+      string.gsub!(/&#124;/,'|')                                                # | SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#058;/,':')                                                # : SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#094;|\^/,'<=caret>')                                      # ^ SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/\#/,'<=hash>')
       ##watch placement, problem sequence ^
-      @string.gsub!(/<sup><font face=symbol>&atild;<\/font><\/sup>/,' ')
-      @string.gsub!(/<:pb>/,'\newpage')
-      @string.gsub!(/<:pn>/,'\clearpage')
-      @string.gsub!(/\\copy(right|mark)?/,'<=copymark>') # ok problem with superscript
-    end
-    def special_characters_2(para)
-      @string.gsub!(/&#156;/,'\oe ')
-      @string.gsub!(/\$/,'\$')
-      @string.gsub!(/\#/,'\#')
-      @string.gsub!(/\%/,'\%')
-      @string.gsub!(/\~/,'\~') #revist, should not be necessary to mark remaining tildes
-      if @string !~/^\s*<:image|\}:image\s/
-        @string.gsub!(/_/,'\_')
+      string.gsub!(/<sup><font face=symbol>&atild;<\/font><\/sup>/,' ')
+      string.gsub!(/<:pb>/,'\newpage')
+      string.gsub!(/<:pn>/,'\clearpage')
+      string.gsub!(/\\copy(right|mark)?/,'<=copymark>') # ok problem with superscript
+      string
+    end
+    def pdftex_special_characters_2(string)
+      string.gsub!(/&#156;/,'\oe ')
+      string.gsub!(/\$/,'\$')
+      string.gsub!(/\#/,'\#')
+      string.gsub!(/\%/,'\%')
+      string.gsub!(/\~/,'\~') #revist, should not be necessary to mark remaining tildes
+      if string !~/^\s*<:image|\}:image\s/
+        string.gsub!(/_/,'\_')
       end
-      @string.gsub!(/\{/,'\{')
-      @string.gsub!(/\}/,'\}')
-      @string.gsub!(/&nbsp;/,'~') # ~ character for hardspace
+      string.gsub!(/\{/,'\{')
+      string.gsub!(/\}/,'\}')
+      string.gsub!(/&nbsp;/,'~') # ~ character for hardspace
       # sequence important must appear after removal of { and }
-      @string.gsub!(/&\S+?;/,'') #hmmm
+      string.gsub!(/&\S+?;/,'') #hmmm
       # sequence imortant place before removal of &
-      if @string=~/<:code>/;        @@flag_code=true
-      elsif @string=~/<:code-end>/; @@flag_code=false
+      if string=~/<:code>/;        @@flag_code=true
+      elsif string=~/<:code-end>/; @@flag_code=false
       end
-      if @@flag_code; @string.gsub!(/&/,'{\\\&}')
-      else @string.gsub!(/(\s+&\s+)/,' and ')
+      if @@flag_code; string.gsub!(/&/,'{\\\&}')
+      else string.gsub!(/(\s+&\s+)/,' and ')
       end
-      @string.gsub!(/§/u,'\S') #latex: space between next character not preserved? #@string.gsub!(/§ /,'\S ')
-      @string.gsub!(/£/u,'\pounds')
-      @string.gsub!(/&\S+?;/,' ')
-      @string.gsub!(/<a href=".+?">/,' ')
-      @string.gsub!(/<\/a>/,' ')
-      @string.gsub!(/[^\}>_]((?:https?|file|ftp):\/\/\S+?)(<\/\S>)/,' \begin{scriptsize}\href{\1}{\1} \end{scriptsize}\2') #special case
-      @string.gsub!(/((?:^|\s)[}])((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\1\begin{scriptsize}\\href{\2}{\2}\end{scriptsize}\3') #special case \{ e.g. \}http://url
-      @string.gsub!(/\B(?:\\_|\\)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\begin{scriptsize}\\href{\1}{\1}\end{scriptsize}\2') #specially escaped url no decoration
+      string.gsub!(/§/u,'\S') #latex: space between next character not preserved? #string.gsub!(/§ /,'\S ')
+      string.gsub!(/£/u,'\pounds')
+      string.gsub!(/&\S+?;/,' ')
+      string.gsub!(/<a href=".+?">/,' ')
+      string.gsub!(/<\/a>/,' ')
+      string.gsub!(/[^\}>_]((?:https?|file|ftp):\/\/\S+?)(<\/\S>)/,' \begin{scriptsize}\href{\1}{\1} \end{scriptsize}\2') #special case
+      string.gsub!(/((?:^|\s)[}])((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\1\begin{scriptsize}\\href{\2}{\2}\end{scriptsize}\3') #special case \{ e.g. \}http://url
+      string.gsub!(/\B(?:\\_|\\)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\begin{scriptsize}\\href{\1}{\1}\end{scriptsize}\2') #specially escaped url no decoration
       unless @@flag_code
-        @string.gsub!(/(^|\s)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?=\s|$))/,"\\1#{@url_brace.tex_open}\\begin{scriptsize}\\href{\\2}{\\2}\\end{scriptsize}#{@url_brace.tex_close}\\3") #url matching with decoration <url> positive lookahead, sequence issue with { linked }http://url cannot use \b at start
+        string.gsub!(/(^|\s)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?=\s|$))/,"\\1#{@url_brace.tex_open}\\begin{scriptsize}\\href{\\2}{\\2}\\end{scriptsize}#{@url_brace.tex_close}\\3") #url matching with decoration <url> positive lookahead, sequence issue with { linked }http://url cannot use \b at start
       else #code-block: angle brackets special characters, note _ already escaped
-        @string.gsub!(/\\_</,'{\UseTextSymbol{OML}{<}}')
-        @string.gsub!(/\\_>/,'{\UseTextSymbol{OML}{>}}')
+        string.gsub!(/\\_</,'{\UseTextSymbol{OML}{<}}')
+        string.gsub!(/\\_>/,'{\UseTextSymbol{OML}{>}}')
       end
-      @string.gsub!(/<:ee>/,'')
-      @string.gsub!(/<!>/,' ')
+      string.gsub!(/<:ee>/,'')
+      string.gsub!(/<!>/,' ')
       #proposed change, insert, but may be redundant
-      @string.gsub!(/ \/><:i[12]>(.+?)(?:\}~|<br)/,' \begin{ParagraphIndent}{0.01\columnwidth}\1\end{ParagraphIndent} ') # footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
-      @string.gsub!(/<(br|p)>|<\/\s*(br|p)>|<(br|p)\s*\/>/," #{@@tex_backslash*2} ") # Work Area
-      @string.gsub!(/<b>(.+?)<\/b>/,'\begin{bfseries}\1 \end{bfseries}')
-      @string.gsub!(/<em>(.+?)<\/em>/,'\begin{bfseries}\1 \end{bfseries}')
-      @string.gsub!(/<(bold|strong)>(.+?)<\/(bold|strong)>/,'\begin{bfseries}\1 \end{bfseries}')
-      @string.gsub!(/<h\d+>(.+?)<\/h\d+>/,'\begin{bfseries}\1 \end{bfseries}')
-      @string.gsub!(/<i>(.+?)<\/i>/,'\emph{\1}')
-      @string.gsub!(/<italic>(.+?)<\/italic>/,'\emph{\1}')
-      @string.gsub!(/<u>(.+?)<\/u>/,'\uline{\1}') # ulem
-      @string.gsub!(/<cite>(.+?)<\/cite>/,"``\\1''") # quote
-      @string.gsub!(/<ins>(.+?)<\/ins>/,'\uline{\1}') # ulem
-      @string.gsub!(/<del>(.+?)<\/del>/,'\sout{\1}') # ulem
-      @string.gsub!(/<sub>(.+?)<\/sub>/,"\$_{\\textrm{\\1}}\$")
-      @string.gsub!(/<sup>(.+?)<\/sup>/,"\$^{\\textrm{\\1}}\$")
+      string.gsub!(/ \/><:i[12]>(.+?)(?:\}~|<br)/,' \begin{ParagraphIndent}{0.01\columnwidth}\1\end{ParagraphIndent} ') # footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+      string.gsub!(/<(br|p)>|<\/\s*(br|p)>|<(br|p)\s*\/>/," #{@@tex_backslash*2} ") # Work Area
+      string.gsub!(/<b>(.+?)<\/b>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<em>(.+?)<\/em>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<(bold|strong)>(.+?)<\/(bold|strong)>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<h\d+>(.+?)<\/h\d+>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<i>(.+?)<\/i>/,'\emph{\1}')
+      string.gsub!(/<italic>(.+?)<\/italic>/,'\emph{\1}')
+      string.gsub!(/<u>(.+?)<\/u>/,'\uline{\1}') # ulem
+      string.gsub!(/<cite>(.+?)<\/cite>/,"``\\1''") # quote
+      string.gsub!(/<ins>(.+?)<\/ins>/,'\uline{\1}') # ulem
+      string.gsub!(/<del>(.+?)<\/del>/,'\sout{\1}') # ulem
+      string.gsub!(/<sub>(.+?)<\/sub>/,"\$_{\\textrm{\\1}}\$")
+      string.gsub!(/<sup>(.+?)<\/sup>/,"\$^{\\textrm{\\1}}\$")
       unless @@flag_code
-        @string.gsub!(/"(.+?)"/,"``\\1''")  # quote marks / quotations open & close " need condition exclude for code
-        @string.gsub!(/\s+"/,' ``')                                          # open "
-        @string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*"/,'\1``')       # open "
-        @string.gsub!(/"(\s|\.|,|:|;)/,"''\\1")                              # close "
-        @string.gsub!(/"([1-6-]#{@@tilde}\S*|<.+?>)?\s*$/,"''\\1")      # close "
-        @string.gsub!(/"(\.|,)/,"''")                                        # close "
-        @string.gsub!(/\s+'/,' `')                                           # open '
-        @string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*'/,'\1`')        # open '
+        string.gsub!(/"(.+?)"/,'“\1”')  # quote marks / quotations open & close " need condition exclude for code
+        string.gsub!(/\s+"/,' “')                                # open "
+        string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*"/,'\1“')  # open "
+        string.gsub!(/"(\s|\.|,|:|;)/,'”\1')                     # close "
+        string.gsub!(/"([1-6-]#{@@tilde}\S*|<.+?>)?\s*$/,'”\1')  # close "
+        string.gsub!(/"(\.|,)/,'”')                              # close "
+        string.gsub!(/\s+'/,' `')                                # open '
+        string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*'/,'\1`')  # open '
       end
-      @string.gsub!(/^(<:i[1-9]>)?\s*\\_\*\s*/,'\1 \begin{math} \bullet \end{math}~~') #bullets - added 2004w17 watch \\_
-      @string.gsub!(/(<font.*?>|<\/font>)/,'')
-      @string.gsub!(/\s*<sup>(\S+?)<\/sup>/,'^\1')
-      @string.gsub!(/(<sup>|<\/sup>)/,'')
-      @string
+      string.gsub!(/^(<:i[1-9]>)?\s*\\_\*\s*/,'\1 \begin{math} \bullet \end{math}~~') #bullets - added 2004w17 watch \\_
+      string.gsub!(/(<font.*?>|<\/font>)/,'')
+      string.gsub!(/\s*<sup>(\S+?)<\/sup>/,'^\1')
+      string.gsub!(/(<sup>|<\/sup>)/,'')
+      string
+    end
+    def pdftex_special_characters_3(string)
+      string.gsub!(/<br(\s*[^\/][^>])/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+      string.gsub!(/([^<][^b][^r]\s+)\/>/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+      #problem sequence (another kludge) ->
+      string.gsub!(/<=lt>/,'{\UseTextSymbol{OML}{<}}')
+      string.gsub!(/<=gt>/,'{\UseTextSymbol{OML}{>}}')
+      #string.gsub!(/<=lt>/,'\<')
+      #string.gsub!(/<=gt>/,'\>')
+      string.gsub!(/<=underscore>/,'\_')
+      string.gsub!(/(\href\{http:\/\/\S+?)(?:(?:<=tilde>)(\S+))+\}/,'\1\~\2}') #tildes in urls \href treated differently from text
+      string.gsub!(/<=tilde>/,'{\~~}')
+      string.gsub!(/<=pipe>/,'{\textbar}')
+      string.gsub!(/<=caret>/,'{\^{~}}')
+      #string.gsub!(/<=caret>/,'\^{}')
+      string.gsub!(/<=exclaim>/,'\Verbatim{!}')
+      string.gsub!(/<=hash>/,'{\#}')
+      #string.gsub!(/<=hash>/,'{\UseTextSymbol{OT1}{#}}')
+      #string.gsub!(/<=slash>/,'{\slash}')
+      string.gsub!(/<=hardspace>/,'{~}') #changed ... 2005
+      string.gsub!(/<=amp>/,'{\\\&}') #changed ... 2005
+      #string.gsub!(/<=amp>/,'{\UseTextSymbol{OT1}{&}}')
+      string.gsub!(/<=slash>/,'{/}')
+      string.gsub!(/<=backslash>/,'{\textbackslash}')
+      #string.gsub!(/<=asterisk>/,'*')
+      #string.gsub!(/<=exclaim>/,'!')
+      #string.gsub!(/<=asterisk>/,'{\ast}')
+      #string.gsub!(/<=copymark>/,"^{\\copyright} ") # watch has been problematic
+      #copymark='{\\begin{small}\\raisebox{1ex}{\\copyright}\\end{small}} '
+      string.gsub!(/<=copymark>\s*(.+)?\s+(<\\~\d+;\w(?:[0-6]:)?\d+;\w\d+><#@dp:#@dp>)/,"^\\copyright \\textnormal{\\1} \\2") # watch likely to be problematic
+      string
     end
-    def special_characters_3(para)
-      @string.gsub!(/<br(\s*[^\/][^>])/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
-      @string.gsub!(/([^<][^b][^r]\s+)\/>/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+    def xetex_special_characters_1(string)             # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
+      #p @@utf_8.list
+      #string=Iconv.conv('ISO-8859-1', 'UTF-8', @string)
+      word=string.scan(/\S+|\n/) #unless line =~/^(?:0~\S|%+\s)/
+      para_array=[]
+      string=if word
+        word.each do |w| # _ - / # | : ! ^ ~
+          unless string =~/^(?:0~|%+ |<!Th?¡ )/um
+            w.gsub!(/[\\]?~/,'<=tilde>') unless w=~/^[1-6]~|~\{|\}~|~\[|\]~|^\^~\s|~\^|\*~\S+|~#|\{t~|<~\d+;(?:[ohmu]|[0-6]:)\d+;\w\d+>/
+            w.gsub!(/&#(?:126|152);/,'<=tilde>') #126 usual
+            #w.gsub!(/&#(?:126|152);/,'<=tilde>') unless w=~/https?:\/\/\S+/ #126 usual
+            w.gsub!(/\\?\||&#124;/,'<=pipe>') #unless w=~/<~\d+;(?:[ohmu]|[0-6]:)\d+;\w\d+>/ # | SiSU not really special sisu character but done, also LaTeX
+          end
+          para_array << w
+        end
+        string=para_array.join(' ')
+        string=string.strip
+        string
+      else ''
+      end
+      string.gsub!(/<~\d+;(?:\w|[0-6]:)\d+;[umdv]\d+><#@dp:#@dp>/,'')
+      string.gsub!(/.+?<-#>/,'')
+      string.gsub!(/<EOF>/,'')
+      string.gsub!(/<ENDNOTES?>/,'')
+      #problem sequence ->
+      string.gsub!(/&(?:nbsp);/,'<=hardspace>')                                 # < SiSU special character also LaTeX
+      string.gsub!(/&(?:lt|#060);/,'<=lt>')                                     # < SiSU special character also LaTeX
+      string.gsub!(/&(?:gt|#062);/,'<=gt>')                                     # > SiSU special character also LaTeX
+      string.gsub!(/&#123;/,'<=curlyopen>')                                     # { SiSU special character also LaTeX
+      string.gsub!(/&#125;/,'<=curlyclose>')                                    # } SiSU special character also LaTeX
+      string.gsub!(/&#(?:126|152);/,'<=tilde>')                                 # ~ SiSU special character also LaTeX
+      string.gsub!(/&#035;/,'\#')                                               # # SiSU special character also LaTeX
+      string.gsub!(/&#033;/,'!')                                                # ! SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#042;/,'*')                                                # * should you wish to escape astrisk e.g. describing \*{bold}*
+      string.gsub!(/&#045;/,'-')                                                # - SiSU special character also LaTeX
+      string.gsub!(/&#043;/,'+')                                                # + SiSU special character also LaTeX
+      string.gsub!(/&#044;/,',')                                                # + SiSU special character also LaTeX
+      string.gsub!(/&#038;/,'<=amp>') #unless @string=~/<:code>/                   # / SiSU special character also LaTeX
+      string.gsub!(/&#047;/,'<=slash>')                                         # / SiSU special character also LaTeX
+      string.gsub!(/&#092;/,'<=backslash>')                                     # \ SiSU special character also LaTeX
+      string.gsub!(/&#095;/,'<=underscore>')                                    # _ SiSU special character also LaTeX
+      string.gsub!(/&#124;/,'|')                                                # | SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#058;/,':')                                                # : SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/&#094;|\^/,'<=caret>')                                      # ^ SiSU not really special sisu character but done, also LaTeX
+      string.gsub!(/\#/,'<=hash>')
+      ##watch placement, problem sequence ^
+      string.gsub!(/<sup><font face=symbol>&atild;<\/font><\/sup>/,' ')
+      string.gsub!(/<:pb>/,'\newpage')
+      string.gsub!(/<:pn>/,'\clearpage')
+      string.gsub!(/\\copy(right|mark)?/,'<=copymark>') # ok problem with superscript
+      string
+    end
+    def xetex_special_characters_2(string)
+      string.gsub!(/&#156;/,'\oe ')
+      string.gsub!(/\$/,'\$')
+      string.gsub!(/\#/,'\#')
+      string.gsub!(/\%/,'\%')
+      string.gsub!(/\~/,'\~') #revist, should not be necessary to mark remaining tildes
+      if string !~/^\s*<:image|\}:image\s/
+        string.gsub!(/_/,'\_')
+      end
+      string.gsub!(/\{/,'\{')
+      string.gsub!(/\}/,'\}')
+      string.gsub!(/&nbsp;/,'~') # ~ character for hardspace
+      # sequence important must appear after removal of { and }
+      string.gsub!(/&\S+?;/,'') #hmmm
+      # sequence imortant place before removal of &
+      if string=~/<:code>/;        @@flag_code=true
+      elsif string=~/<:code-end>/; @@flag_code=false
+      end
+      if @@flag_code; string.gsub!(/&/,'{\\\&}')
+      else string.gsub!(/(\s+&\s+)/,' and ')
+      end
+      string.gsub!(/§/u,'\S') #latex: space between next character not preserved? #string.gsub!(/§ /,'\S ')
+      string.gsub!(/£/u,'\pounds')
+      string.gsub!(/&\S+?;/,' ')
+      string.gsub!(/<a href=".+?">/,' ')
+      string.gsub!(/<\/a>/,' ')
+      string.gsub!(/[^\}>_]((?:https?|file|ftp):\/\/\S+?)(<\/\S>)/,' \begin{scriptsize}\href{\1}{\1} \end{scriptsize}\2') #special case
+      string.gsub!(/((?:^|\s)[}])((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\1\begin{scriptsize}\\href{\2}{\2}\end{scriptsize}\3') #special case \{ e.g. \}http://url
+      string.gsub!(/\B(?:\\_|\\)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?:\s|$))/,'\begin{scriptsize}\\href{\1}{\1}\end{scriptsize}\2') #specially escaped url no decoration
+      unless @@flag_code
+        string.gsub!(/(^|\s)((?:https?|file|ftp):\/\/\S+?\.[^'"><\s]+?)([;.,]?(?=\s|$))/,"\\1#{@url_brace.tex_open}\\begin{scriptsize}\\href{\\2}{\\2}\\end{scriptsize}#{@url_brace.tex_close}\\3") #url matching with decoration <url> positive lookahead, sequence issue with { linked }http://url cannot use \b at start
+      else #code-block: angle brackets special characters, note _ already escaped
+        string.gsub!(/\\_</,'{\UseTextSymbol{OML}{<}}')
+        string.gsub!(/\\_>/,'{\UseTextSymbol{OML}{>}}')
+      end
+      string.gsub!(/<:ee>/,'')
+      string.gsub!(/<!>/,' ')
+      #proposed change, insert, but may be redundant
+      string.gsub!(/ \/><:i[12]>(.+?)(?:\}~|<br)/,' \begin{ParagraphIndent}{0.01\columnwidth}\1\end{ParagraphIndent} ') # footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+      string.gsub!(/<(br|p)>|<\/\s*(br|p)>|<(br|p)\s*\/>/," #{@@tex_backslash*2} ") # Work Area
+      string.gsub!(/<b>(.+?)<\/b>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<em>(.+?)<\/em>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<(bold|strong)>(.+?)<\/(bold|strong)>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<h\d+>(.+?)<\/h\d+>/,'\begin{bfseries}\1 \end{bfseries}')
+      string.gsub!(/<i>(.+?)<\/i>/,'\emph{\1}')
+      string.gsub!(/<italic>(.+?)<\/italic>/,'\emph{\1}')
+      string.gsub!(/<u>(.+?)<\/u>/,'\uline{\1}') # ulem
+      string.gsub!(/<cite>(.+?)<\/cite>/,"``\\1''") # quote
+      string.gsub!(/<ins>(.+?)<\/ins>/,'\uline{\1}') # ulem
+      string.gsub!(/<del>(.+?)<\/del>/,'\sout{\1}') # ulem
+      string.gsub!(/<sub>(.+?)<\/sub>/,"\$_{\\textrm{\\1}}\$")
+      string.gsub!(/<sup>(.+?)<\/sup>/,"\$^{\\textrm{\\1}}\$")
+      unless @@flag_code
+        string.gsub!(/"(.+?)"/,'“\1”')  # quote marks / quotations open & close " need condition exclude for code
+        string.gsub!(/\s+"/,' “')                                # open "
+        string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*"/,'\1“')  # open "
+        string.gsub!(/"(\s|\.|,|:|;)/,'”\1')                     # close "
+        string.gsub!(/"([1-6-]#{@@tilde}\S*|<.+?>)?\s*$/,'”\1')  # close "
+        string.gsub!(/"(\.|,)/,'”')                              # close "
+        string.gsub!(/\s+'/,' `')                                # open '
+        string.gsub!(/^([1-6-]#{@@tilde}\S*|<.+?>)?\s*'/,'\1`')  # open '
+      end
+      #string.gsub!(/^(<:i[1-9]>)?\s*\\_\*\s*/,'\1 \begin{math} \bullet \end{math}~~') #bullets - added 2004w17 watch \\_
+      string.gsub!(/^(<:i[1-9]>)?\s*\\_\*\s*/,'\1 ● ~~')
+      string.gsub!(/(<font.*?>|<\/font>)/,'')
+      string.gsub!(/\s*<sup>(\S+?)<\/sup>/,'^\1')
+      string.gsub!(/(<sup>|<\/sup>)/,'')
+      string
+    end
+    def xetex_special_characters_3(string)
+      string.gsub!(/<br(\s*[^\/][^>])/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
+      string.gsub!(/([^<][^b][^r]\s+)\/>/,'\1') # clean up, incredibly messy :-( footnote indents, problems if match exists in ordinary paragraphs? check! Work Area 200501 a bit tricky as must be able to match multiple times, and to clean remainder
       #problem sequence (another kludge) ->
-      @string.gsub!(/<=lt>/,'{\UseTextSymbol{OML}{<}}')
-      @string.gsub!(/<=gt>/,'{\UseTextSymbol{OML}{>}}')
-      #@string.gsub!(/<=lt>/,'\<')
-      #@string.gsub!(/<=gt>/,'\>')
-      @string.gsub!(/<=underscore>/,'\_')
-      @string.gsub!(/(\href\{http:\/\/\S+?)(?:(?:<=tilde>)(\S+))+\}/,'\1\~\2}') #tildes in urls \href treated differently from text
-      @string.gsub!(/<=tilde>/,'{\~~}')
-      @string.gsub!(/<=pipe>/,'{\textbar}')
-      @string.gsub!(/<=caret>/,'{\^{~}}')
-      #@string.gsub!(/<=caret>/,'\^{}')
-      @string.gsub!(/<=exclaim>/,'\Verbatim{!}')
-      @string.gsub!(/<=hash>/,'{\#}')
-      #@string.gsub!(/<=hash>/,'{\UseTextSymbol{OT1}{#}}')
-      #@string.gsub!(/<=slash>/,'{\slash}')
-      @string.gsub!(/<=hardspace>/,'{~}') #changed ... 2005
-      @string.gsub!(/<=amp>/,'{\\\&}') #changed ... 2005
-      #@string.gsub!(/<=amp>/,'{\UseTextSymbol{OT1}{&}}')
-      @string.gsub!(/<=slash>/,'{/}')
-      @string.gsub!(/<=backslash>/,'{\textbackslash}')
-      #@string.gsub!(/<=asterisk>/,'*')
-      #@string.gsub!(/<=exclaim>/,'!')
-      #@string.gsub!(/<=asterisk>/,'{\ast}')
-      #@string.gsub!(/<=copymark>/,"^{\\copyright} ") # watch has been problematic
+      string.gsub!(/<=lt>/,'{\UseTextSymbol{OML}{<}}')
+      string.gsub!(/<=gt>/,'{\UseTextSymbol{OML}{>}}')
+      #string.gsub!(/<=lt>/,'\<')
+      #string.gsub!(/<=gt>/,'\>')
+      string.gsub!(/<=underscore>/,'\_')
+      string.gsub!(/(\href\{http:\/\/\S+?)(?:(?:<=tilde>)(\S+))+\}/,'\1\~\2}') #tildes in urls \href treated differently from text
+      string.gsub!(/<=tilde>/,'{\~~}')
+      string.gsub!(/<=pipe>/,'{\textbar}')
+      string.gsub!(/<=caret>/,'{\^{~}}')
+      #string.gsub!(/<=caret>/,'\^{}')
+      string.gsub!(/<=exclaim>/,'\Verbatim{!}')
+      string.gsub!(/<=hash>/,'{\#}')
+      #string.gsub!(/<=hash>/,'{\UseTextSymbol{OT1}{#}}')
+      #string.gsub!(/<=slash>/,'{\slash}')
+      string.gsub!(/<=hardspace>/,'{~}') #changed ... 2005
+      string.gsub!(/<=amp>/,'{\\\&}') #changed ... 2005
+      #string.gsub!(/<=amp>/,'{\UseTextSymbol{OT1}{&}}')
+      string.gsub!(/<=slash>/,'{/}')
+      string.gsub!(/<=backslash>/,'{\textbackslash}')
+      #string.gsub!(/<=asterisk>/,'*')
+      #string.gsub!(/<=exclaim>/,'!')
+      #string.gsub!(/<=asterisk>/,'{\ast}')
+      #string.gsub!(/<=copymark>/,"^{\\copyright} ") # watch has been problematic
       #copymark='{\\begin{small}\\raisebox{1ex}{\\copyright}\\end{small}} '
-      @string.gsub!(/<=copymark>\s*(.+)?\s+(<\\~\d+;\w(?:[0-6]:)?\d+;\w\d+><#@dp:#@dp>)/,"^\\copyright \\textnormal{\\1} \\2") # watch likely to be problematic
-      @string
+      string.gsub!(/<=copymark>\s*(.+)?\s+(<\\~\d+;\w(?:[0-6]:)?\d+;\w\d+><#@dp:#@dp>)/,"^\\copyright \\textnormal{\\1} \\2") # watch likely to be problematic
+      string
     end
-    def special_characters_curly(para)
-      @string.gsub!(/<=curlyopen>/,'\{')
-      @string.gsub!(/<=curlyclose>/,'\}')
-      @string
+    def special_characters_curly(string)
+      string.gsub!(/<=curlyopen>/,'\{')
+      string.gsub!(/<=curlyclose>/,'\}')
+      string
     end
-    def special_characters_unsafe_1(para) #depreciated, make obsolete
+
+
+    def special_characters_unsafe_1(string) #depreciated, make obsolete
       # some substitutions are sequence sensitive, rearrange with care.
-      @string.gsub!(/\\backslash (copyright|clearpage|newpage)/,"\\\\\\1")  #kludge bad solution, find out where tail is sent through specChar !
-    end
-    def special_characters_unsafe_2(para)
-    end
-    def special_characters_unsafe_3(para)
+      string.gsub!(/\\backslash (copyright|clearpage|newpage)/,"\\\\\\1")  #kludge bad solution, find out where tail is sent through specChar !
+      string
     end
     def special_characters                                                       #special characters - some substitutions are sequence sensitive, rearrange with care.
-      special_characters_1(@string)
-      special_characters_unsafe_1(@string)
-      special_characters_2(@string)
-      special_characters_3(@string)
+      string=@string
+      case @tex2pdf
+      when /pdf/
+        string=pdftex_special_characters_1(string) unless string.nil?
+        string=special_characters_unsafe_1(string) unless string.nil? #pdftex_special_characters_unsafe_1(@string)
+        string=pdftex_special_characters_2(string) unless string.nil?
+        string=pdftex_special_characters_3(string) unless string.nil?
+      when /xe/
+        string=xetex_special_characters_1(string) unless string.nil?
+        string=special_characters_unsafe_1(string) unless string.nil? #xetex_special_characters_unsafe_1(@string)
+        string=xetex_special_characters_2(string) unless string.nil? #issues with xetex
+        string=xetex_special_characters_3(string) unless string.nil?
+      end
+      @string=string
     end
     def special_characters_safe                                                  #special characters - some substitutions are sequence sensitive, rearrange with care.
-      special_characters_1(@string)
-      special_characters_2(@string)
-      #special_characters_3(@string)
+      string=@string
+      case @tex2pdf
+      when /pdf/
+        string=pdftex_special_characters_1(@string) unless string.nil?
+        string=pdftex_special_characters_2(@string) unless string.nil?
+        #special_characters_3(@string)
+      when /xe/
+        string=xetex_special_characters_1(@string) unless string.nil?
+        string=xetex_special_characters_2(@string) unless string.nil? # remove this to start with, causes issues
+      end
+      @string=string
     end
     def heading_major(para,lev)
       title=@md.title
@@ -947,17 +1120,27 @@ WOK
       end
     end
     def tex_head_encode
-      case @md.file_encoding
-      when /iso-?8859/i                                                         #% iso8859
-      <<WOK
-\\usepackage[latin1]{inputenc}
+      case @tex2pdf
+      when /xe/
+        <<WOK
+\\usepackage{babel}
+\\usepackage{ucs}
+\\usepackage{fontspec}
+\\usepackage{xunicode}
 WOK
-      else                                                                      #% utf-8 assumed
-      <<WOK
+      when /pdf/
+        if @md.file_encoding =~ /iso-?8859/i                                                         #% iso8859
+        <<WOK
+% \\usepackage[latin1]{inputenc}
+\\usepackage{fontspec}
+WOK
+        else                                                                      #% utf-8 assumed
+        <<WOK
 \\usepackage{babel}
 \\usepackage{ucs}
 \\usepackage[utf8x]{inputenc}
 WOK
+        end
       end
     end
     def tex_head_info
@@ -1099,7 +1282,7 @@ WOK
 \\usepackage{url}
 \\usepackage{alltt}
 \\usepackage{thumbpdf}
-\\usepackage[pdftex,
+\\usepackage[#{@tex2pdf},
   #{color.strip}
   pdftitle={#@string1},
 %  pdftitle={Untitled},
@@ -1125,6 +1308,9 @@ WOK
   pdfstartview=FitH
 ]
 {hyperref}
+%% trace lost characters
+% \\tracinglostchars = 1
+% \\tracingonline = 1
 \\usepackage[usenames]{color}
 \\definecolor{myblack}{rgb}{0,0,0}
 \\definecolor{myred}{rgb}{0.75,0,0}
-- 
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