0.9.2 @safe & @trusted first pass

13 files changed, 235 insertions, 231 deletions

diff --git a/src/doc_reform/io_in/read_source_files.d b/src/doc_reform/io_in/read_source_files.d
index e443b01..aeb2382 100644
--- a/src/doc_reform/io_in/read_source_files.d
+++ b/src/doc_reform/io_in/read_source_files.d
@@ -15,7 +15,7 @@ static template spineRawMarkupContent() {
   mixin spineRgxInit;
   static auto rgx = Rgx();
   string[] _images=[];
-  auto _extract_images(S)(S content_block) {
+  auto _extract_images(S)(S content_block) @safe {
     string[] images_;
     string _content_block = content_block.to!string;
     if (auto m = _content_block.matchAll(rgx.image)) {
@@ -24,7 +24,7 @@ static template spineRawMarkupContent() {
     return images_;
   }
   auto rawsrc = RawMarkupContent();
-  auto spineRawMarkupContent(O,Fn)(O _opt_action, Fn fn_src) {
+  auto spineRawMarkupContent(O,Fn)(O _opt_action, Fn fn_src) @safe {
     auto _0_header_1_body_content_2_insert_filelist_tuple
       = rawsrc.sourceContentSplitIntoHeaderAndBody(_opt_action, rawsrc.sourceContent(fn_src), fn_src);
     return _0_header_1_body_content_2_insert_filelist_tuple;
@@ -36,7 +36,11 @@ static template spineRawMarkupContent() {
         = raw.markupSourceReadIn(fn_src);
       return source_txt_str;
     }
-    final auto sourceContentSplitIntoHeaderAndBody(O)(O _opt_action, in string source_txt_str, in string fn_src="") {
+    final auto sourceContentSplitIntoHeaderAndBody(O)(
+      O         _opt_action,
+      in string source_txt_str,
+      in string fn_src=""
+    ) {
       auto raw = MarkupRawUnit();
       string[] insert_file_list;
       string[] images_list;
@@ -99,7 +103,7 @@ static template spineRawMarkupContent() {
       std.utf.validate(source_txt_str);
       return source_txt_str;
     }
-    final private char[][] header0Content1(in string src_text) {
+    final private char[][] header0Content1(in string src_text) @trusted { // cast(char[])
       /+ split string on _first_ match of "^:?A~\s" into [header, content] array/tuple +/
       char[][] header_and_content;
       auto m = (cast(char[]) src_text).matchFirst(rgx.heading_a);
@@ -112,7 +116,7 @@ static template spineRawMarkupContent() {
       );
       return header_and_content;
     }
-    final private char[][] markupSourceLineArray(in char[] src_text) {
+    final private char[][] markupSourceLineArray(in char[] src_text) @trusted { // cast(char[])
       char[][] source_line_arr
         = (cast(char[]) src_text).split(rgx.newline_eol_strip_preceding);
       return source_line_arr;
@@ -127,7 +131,7 @@ static template spineRawMarkupContent() {
       auto source_txt_str = readInMarkupSource(fn_src);
       return source_txt_str;
     }
-    auto markupSourceHeaderContentRawLineTupleArray(in string source_txt_str) {
+    auto markupSourceHeaderContentRawLineTupleArray(in string source_txt_str) @safe {
       string[] file_insert_list = [];
       string[] images_list = [];
       char[][] hc = header0Content1(source_txt_str);
diff --git a/src/doc_reform/io_out/epub3.d b/src/doc_reform/io_out/epub3.d
index 14038a8..35a31cd 100644
--- a/src/doc_reform/io_out/epub3.d
+++ b/src/doc_reform/io_out/epub3.d
@@ -14,12 +14,12 @@ template outputEPub3() {
     doc_reform.io_out.xmls_css;
   mixin InternalMarkup;
   mixin outputXHTMLs;
-  string epub3_mimetypes() {
+  string epub3_mimetypes() @safe {
     string o;
     o = format(q"┃application/epub+zip┃") ~ "\n";
     return o;
   }
-  string epub3_container_xml() {
+  string epub3_container_xml() @safe {
     string o;
     o = format(q"┃<?xml version='1.0' encoding='utf-8'?>┃") ~ "\n";
     o ~= format(q"┃<container version="1.0"
@@ -30,7 +30,7 @@ template outputEPub3() {
   </rootfiles>┃") ~ "\n</container>\n";
     return o;
   }
-  string epub3_oebps_content(D,M,P)(D doc_abstraction, M doc_matters, P parts) {
+  string epub3_oebps_content(D,M,P)(D doc_abstraction, M doc_matters, P parts) @safe {
     auto xhtml_format = outputXHTMLs();
     auto pth_epub3 = spinePathsEPUB!()(doc_matters.output_path, doc_matters.src.language);
     string _uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO sort uuid in doc_matters!
@@ -128,7 +128,7 @@ template outputEPub3() {
     }
     return content;
   }
-  string epub3_oebps_toc_nav_xhtml(D,I)(D doc_abstraction, I doc_matters) {
+  string epub3_oebps_toc_nav_xhtml(D,I)(D doc_abstraction, I doc_matters) @safe {
     enum DomTags { none, open, close, close_and_open, open_still, }
     auto markup = InlineMarkup();
     auto rgx = Rgx();
@@ -207,7 +207,7 @@ template outputEPub3() {
   </html>\n";
     return toc;
   }
-  string epub2_oebps_toc_ncx(D,I)(D doc_abstraction, I doc_matters) {
+  string epub2_oebps_toc_ncx(D,I)(D doc_abstraction, I doc_matters) @safe {
     int counter = 0;
     string _uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
     auto markup = InlineMarkup();
@@ -300,7 +300,7 @@ template outputEPub3() {
   void outputEPub3(D,I)(
     const D    doc_abstraction,
           I    doc_matters,
-  ) {
+  ) { // @trusted
     mixin spineOutputRgxInit;
     auto xhtml_format = outputXHTMLs();
     auto rgx = Rgx();
@@ -609,7 +609,7 @@ template outputEPub3() {
   void epub3_write_output_files(W,M)(
     W epub_write,
     M doc_matters,
-  ) {
+  ) { // @trusted
     debug(asserts) {
       static assert(is(typeof(epub_write.doc_epub3)              == string[][string]));
       static assert(is(typeof(epub_write.mimetypes)              == string));
diff --git a/src/doc_reform/io_out/html.d b/src/doc_reform/io_out/html.d
index 36e0219..458533c 100644
--- a/src/doc_reform/io_out/html.d
+++ b/src/doc_reform/io_out/html.d
@@ -16,7 +16,7 @@ template outputHTML() {
   void scroll(D,M)(
     const        D    doc_abstraction,
                  M    doc_matters,
-  ) {
+  ) @safe {
     mixin spineOutputRgxInit;
     auto xhtml_format = outputXHTMLs();
     auto rgx = Rgx();
@@ -186,7 +186,7 @@ template outputHTML() {
   void scroll_write_output(D,M)(
     D doc,
     M doc_matters,
-  ) {
+  ) @trusted {
     debug(asserts) {
       static assert(is(typeof(doc)    == string[]));
     }
@@ -209,7 +209,7 @@ template outputHTML() {
   void seg(D,M)(
     const D    doc_abstraction,
           M    doc_matters,
-  ) {
+  ) @safe {
     mixin spineOutputRgxInit;
     auto rgx = Rgx();
     auto xhtml_format = outputXHTMLs();
@@ -463,7 +463,7 @@ template outputHTML() {
     D doc_html,
     E doc_html_endnotes,
     M doc_matters,
-  ) {
+  ) @trusted { // @system?
     debug(asserts) {
       static assert(is(typeof(doc_html)      == string[][string]));
     }
@@ -493,7 +493,7 @@ template outputHTML() {
       writeln(" ", pth_html.fn_seg(doc_matters.src.filename, "toc"));
     }
   }
-  void css(M)(M doc_matters) {
+  void css(M)(M doc_matters) @safe {
     auto css = spineCss(doc_matters);
     auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
     try {
@@ -510,7 +510,7 @@ template outputHTML() {
   }
   void images_cp(M)(
     M    doc_matters,
-  ) {
+  ) @trusted { // @system
     { /+ (copy html images) +/
   
       auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
diff --git a/src/doc_reform/io_out/latex.d b/src/doc_reform/io_out/latex.d
index 6e651dd..a97a697 100644
--- a/src/doc_reform/io_out/latex.d
+++ b/src/doc_reform/io_out/latex.d
@@ -14,7 +14,7 @@ template outputLaTeX() {
   auto lang = Lang();
       auto paper() {
         struct PaperType {
-          auto a4() {
+          auto a4() @safe {
             struct A4 {
               auto portrait() {
                 struct V {
@@ -35,7 +35,7 @@ template outputLaTeX() {
             }
             return A4();
           }
-          auto a5() {
+          auto a5() @safe {
             struct A5 {
               auto portrait() {
                 struct V {
@@ -56,7 +56,7 @@ template outputLaTeX() {
             }
             return A5();
           }
-          auto b4() {
+          auto b4() @safe {
             struct B4 {
               auto portrait() {
                 struct V {
@@ -77,7 +77,7 @@ template outputLaTeX() {
             }
             return B4();
           }
-          auto letter() {
+          auto letter() @safe {
             struct Letter {
               auto portrait() {
                 struct V {
@@ -98,7 +98,7 @@ template outputLaTeX() {
             }
             return Letter();
           }
-          auto legal() {
+          auto legal() @safe {
             struct Legal {
               auto portrait() {
                 struct V {
@@ -125,7 +125,7 @@ template outputLaTeX() {
   string sp_char_esc(O)(
     string      _txt,
     const    O  obj,
-  ) {
+  ) @safe {
     string _unescape_sp_char_esc()(string _txt) {
       _txt = _txt
         .replaceAll(rgx.latex_special_char_escaped,
@@ -149,7 +149,7 @@ template outputLaTeX() {
   }
   string sp_char_esc_txt()(
     string      _txt,
-  ) {
+  ) @safe {
     string _unescape_sp_char_esc()(string _txt) {
       _txt = _txt
         .replaceAll(rgx.latex_special_char_escaped,
@@ -171,7 +171,7 @@ template outputLaTeX() {
   }
   string fontface()(
     string      _txt,
-  ) {
+  ) @safe {
   _txt = _txt
     .replaceAll(rgx.inline_emphasis,    format(q"┃\begin{bfseries}%s\end{bfseries}┃", "$1"))
     .replaceAll(rgx.inline_bold,        format(q"┃\begin{bfseries}%s\end{bfseries}┃", "$1"))
@@ -187,7 +187,7 @@ template outputLaTeX() {
   }
   string leading_hardspaces()(
     string      _txt,
-  ) {
+  ) @safe {
     string hardspaces(string _spaces) {
       _spaces  = _spaces
         .replaceAll(rgx.space, "\\hardspace ");
@@ -196,13 +196,13 @@ template outputLaTeX() {
     _txt = replaceAll!(m => hardspaces(m[0]))(_txt, rgx.spaces_line_start);
     return _txt;
   }
-  string nbsp_char()(string _txt) {
+  string nbsp_char()(string _txt) @safe {
     if (_txt.match(rgx.nbsp_char)) {
       _txt  = _txt.replaceAll(rgx.nbsp_char, "\\hardspace ");
     }
     return _txt;
   }
-  string nbsp_char_to_space()(string _txt) {
+  string nbsp_char_to_space()(string _txt) @safe {
     if (_txt.match(rgx.nbsp_char)) {
       _txt  = _txt.replaceAll(rgx.nbsp_char, " ");
     }
@@ -212,7 +212,7 @@ template outputLaTeX() {
     string      _txt,
     const    O  obj,
              M  doc_matters,
-  ) {
+  ) @safe {
     if (obj.has.inline_links) { // TODO some images do not have inline links ... image without link
       string _width_adjust(string _width) {
         if (_width.to!int > 300) { _width = "300"; } // will need to vary max with papersize & orientation
@@ -255,7 +255,7 @@ template outputLaTeX() {
   }
   string footnotes()(
     string      _txt,
-  ) {
+  ) @safe {
     if (_txt.match(rgx.inline_notes_al_gen)) {
       string _tex_note = q"┃\hypertarget{noteref_%s}{}\footnote[%s]{%%
   \label{note_%s}%s}┃";
@@ -270,7 +270,7 @@ template outputLaTeX() {
   }
   string remove_footnotes()(
     string      _txt,
-  ) {
+  ) @safe {
     if (_txt.match(rgx.inline_notes_al_gen)) {
       _txt = replaceAll!(m => "")(_txt, rgx.inline_notes_al_gen);
     }
@@ -279,7 +279,7 @@ template outputLaTeX() {
   string para(O)(
     string      _txt,
     O           obj,
-  ) {
+  ) @safe {
     if (obj.metainfo.is_of_type == "para") {
       string _tex_para;
       _tex_para = q"┃\begin{tiny}\hspace{0mm}\end{tiny}{\marginpar{\begin{tiny}\hspace{0mm}\hypertarget{%s}{%s}\end{tiny}}}%s┃";
@@ -294,7 +294,7 @@ template outputLaTeX() {
   string bookindex(O)(
     string      _txt,
     O           obj,
-  ) {
+  ) @safe {
     if (obj.metainfo.is_of_type == "para"
       && obj.metainfo.is_a == "bookindex"
     ) {
@@ -311,7 +311,7 @@ template outputLaTeX() {
     O           obj,
     M           doc_matters,
     string      _part = ""
-  ) {
+  ) @safe {
     if (obj.metainfo.is_a == "heading") {
       string _tex_para;
       string _pg_break;
@@ -642,7 +642,7 @@ string table(O,M)(
   string bullets_and_indentation(O)(
     string      _txt,
     O           obj,
-  ) {
+  ) @safe {
     string _tex_para;
     string _hang; string _indent;
     int _paper_margin = -10;
diff --git a/src/doc_reform/io_out/odt.d b/src/doc_reform/io_out/odt.d
index dbb8e5d..6e792a5 100644
--- a/src/doc_reform/io_out/odt.d
+++ b/src/doc_reform/io_out/odt.d
@@ -15,7 +15,7 @@ template formatODT() {
   mixin spineOutputRgxInit;
   struct formatODT {
     static auto rgx = Rgx();
-    string _tags(O)(const O obj){
+    string _tags(O)(const O obj) @safe {
       string _tags = "";
       if (obj.tags.anchor_tags.length > 0) {
         foreach (tag_; obj.tags.anchor_tags) {
@@ -33,7 +33,7 @@ template formatODT() {
       }
       return _tags;
     }
-    string _xhtml_anchor_tags(O)(O obj) {
+    string _xhtml_anchor_tags(O)(O obj) @safe {
       const(string[]) anchor_tags = obj.tags.anchor_tags;
       string tags="";
       if (anchor_tags.length > 0) {
@@ -45,7 +45,7 @@ template formatODT() {
       }
       return tags;
     }
-    string obj_num(O)(const O obj){ // TODO
+    string obj_num(O)(const O obj) @safe { // TODO
       string _on;
       _on = (obj.metainfo.object_number.empty)
       ? ""
@@ -55,7 +55,7 @@ template formatODT() {
         ));
       return _on;
     }
-    string _footnotes()(string _txt){
+    string _footnotes()(string _txt) @safe {
       static auto rgx = Rgx();
       _txt = _txt.replaceAll(
         rgx.inline_notes_al_regular_number_note,
@@ -74,14 +74,14 @@ template formatODT() {
       );
       return _txt;
     }
-    string _bullet(O)(const O obj){
+    string _bullet(O)(const O obj) @safe {
       string _b = "";
       if (obj.attrib.bullet) {
         _b = format(q"┃● ┃",);
       }
       return _b;
     }
-    string _indent(O)(string _txt, const O obj) { // TODO
+    string _indent(O)(string _txt, const O obj) @safe { // TODO
       // if (obj.attrib.indent_base > 0 ||
       //   obj.attrib.indent_hang > 0
       // ) {
@@ -189,7 +189,7 @@ template formatODT() {
       }
       return _txt;
     }
-    string _block_type_delimiters(O)(string[] _block_lines, const O obj) { // TODO
+    string _block_type_delimiters(O)(string[] _block_lines, const O obj) @safe { // TODO
       string _block = "";
       foreach (i, _line; _block_lines) {
         _line = _footnotes(_line);
@@ -222,7 +222,7 @@ template formatODT() {
         obj_num(obj));
       return _block;
     }
-    string _special_characters(O)(string _txt, const O obj) {
+    string _special_characters(O)(string _txt, const O obj) @safe {
       _txt = _txt
         .replaceAll(rgx.xhtml_ampersand,    "&amp;")
         .replaceAll(rgx.xhtml_quotation,    "&#34;")
@@ -231,7 +231,7 @@ template formatODT() {
         .replaceAll(rgx.nbsp_char,          "&#160;");
       return _txt;
     }
-    string _preserve_white_spaces(O)(string _txt, const O obj) {
+    string _preserve_white_spaces(O)(string _txt, const O obj) @safe {
       if (obj.metainfo.is_a == "code" || obj.metainfo.is_a == "verse" || obj.metainfo.is_a == "block") {
         _txt = _txt
           .replaceAll(rgx.space,      "&#160;");
@@ -252,9 +252,9 @@ template formatODT() {
         .replaceAll(rgx.inline_mono,        format(q"┃<text:span text:style-name="Span_monospace">%s</text:span>┃","$1"));
       return _txt;
     }
-    auto _obj_num(O)(O obj) { // NOT USED YET
+    auto _obj_num(O)(O obj) @safe { // NOT USED YET
       struct objNum {
-        string reference() {
+        string reference() @safe {
           return format(q"┃<text:span text:style-name="Span_subscript">
         <text:bookmark-start text:name="%s"/>
         <text:bookmark-end text:name="%s"/>
@@ -263,7 +263,7 @@ template formatODT() {
             obj.object_number,
           );
         }
-        string display() {
+        string display() @safe {
           return format(q"┃<text:span text:style-name="Span_subscript">
       %s%s%s
       </text:span>┃",
@@ -275,20 +275,20 @@ template formatODT() {
       }
       return objNum();
     }
-    string _break_page()() {
+    string _break_page()() @safe {
       return format(q"┃
     <text:p text:style-name="P_normal_page_new"/>
     ┃",
       );
     }
-    string _empty_line_break(O)(string _txt, const O obj) {
+    string _empty_line_break(O)(string _txt, const O obj) @safe {
       if (obj.metainfo.is_a == "code" || obj.metainfo.is_a == "verse" || obj.metainfo.is_a == "block") {
         _txt = _txt
           .replaceAll(rgx.br_empty_line,    "<br />");
       }
       return _txt;
     }
-    string _links(O)(string _txt, const O obj) {
+    string _links(O)(string _txt, const O obj) @safe {
       if (obj.metainfo.is_a != "code") {
         if (obj.metainfo.is_a == "toc") {
           _txt = replaceAll!(m =>
@@ -328,7 +328,7 @@ template formatODT() {
       }
       return _txt;
     }
-    string _images(O)(string _txt, const O obj) {
+    string _images(O)(string _txt, const O obj) @safe {
       if (_txt.match(rgx.inline_image)) {
         _txt = _txt
           .replaceAll(rgx.inline_image,
@@ -339,7 +339,7 @@ template formatODT() {
       }
       return _txt;
     }
-    string markup(O)(const O obj) {
+    string markup(O)(const O obj) @safe {
       /+ markup TODO +/
       string _txt = obj.text;
       _txt = _special_characters(_txt, obj);     // TODO & why both obj & obj.text, consider also in output_xmls.org
@@ -356,7 +356,7 @@ template formatODT() {
     string heading(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body" || "frontmatter" || "backmatter");
       assert(obj.metainfo.is_of_section == "body" || "toc" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "para");
@@ -400,7 +400,7 @@ template formatODT() {
     string para(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body" || "frontmatter" || "backmatter");
       assert(obj.metainfo.is_of_section == "body" || "toc" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "para");
@@ -419,7 +419,7 @@ template formatODT() {
     string quote(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -431,7 +431,7 @@ template formatODT() {
     string group(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -449,7 +449,7 @@ template formatODT() {
     string block(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -462,7 +462,7 @@ template formatODT() {
     string verse(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -475,7 +475,7 @@ template formatODT() {
     string code(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body");
       assert(obj.metainfo.is_of_type    == "block");
@@ -522,7 +522,7 @@ template formatODT() {
     auto tablarize(O)(
       const        O    obj,
       string            _txt,
-    ) {
+    ) @safe {
       string[] _table_rows = (_txt).split(rgx.table_delimiter_row);
       string[] _table_cols;
       string _table;
@@ -557,7 +557,7 @@ template formatODT() {
     string table(O,M)(
       const        O  obj,
       const        M  doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body");
       assert(obj.metainfo.is_of_type    == "block");
@@ -606,7 +606,7 @@ template outputODT() {
   mixin spineOutputRgxInit;
   auto rgx = Rgx();
   // mixin outputXmlODT;
-  string odt_head(I)(I doc_matters) {
+  string odt_head(I)(I doc_matters) @safe {
     string _has_tables = format(q"┃
     <style:style style:name="Table1" style:family="table">
       <style:table-properties style:width="16.999cm" table:align="margins"/>
@@ -717,7 +717,7 @@ template outputODT() {
   string odt_body(D,I)(
     const D    doc_abstraction,
           I    doc_matters,
-  ) {
+  ) @safe {
     mixin formatODT;
     auto odt_format = formatODT();
     string delimit = "";
@@ -840,7 +840,7 @@ template outputODT() {
     return doc_odt;
   }
   
-  string odt_tail() {
+  string odt_tail() @safe {
     string _odt_tail = format(q"┃<text:p text:style-name="P_normal">spine: &lt;<text:a xl:type="simple" xl:href="http://www.doc_reform.org">www.doc_reform.org</text:a>&gt; and &lt;<text:a xl:type="simple" xl:href="http://www.sisudoc.org">www.sisudoc.org</text:a>&gt;</text:p>
   </office:text></office:body></office:document-content>┃",);
     return _odt_tail;
@@ -848,7 +848,7 @@ template outputODT() {
   string content_xml(D,I)(
     const D    doc_abstraction,
           I    doc_matters,
-  ) {
+  ) @safe {
     string _content_xml;
     string break_line = (doc_matters.opt.action.debug_do) ? "\n" : "";
     string odt_break_page = format(q"┃<text:p text:style-name="P_normal_page_new"/>┃",);
@@ -860,7 +860,7 @@ template outputODT() {
   }
   string manifest_xml(M)(
     auto ref              M    doc_matters,
-  ) {
+  ) @safe {
     string _bullet = format(q"┃<manifest:file-entry manifest:media-type="" manifest:full-path="Pictures/bullet_09.png"/>┃");
     string[] _images = [ _bullet ];
     foreach (image; doc_matters.srcs.image_list) {
@@ -884,7 +884,7 @@ template outputODT() {
   }
   void images_cp(M)(
     auto ref              M    doc_matters,
-  ) {
+  ) @safe {
     { /+ (copy odt images) +/
       auto pth_odt = spinePathsODT!()(doc_matters);
       foreach (image; doc_matters.srcs.image_list) {
@@ -904,7 +904,7 @@ template outputODT() {
   }
   string meta_xml(M)(
     auto ref              M    doc_matters,
-  ) {
+  ) @safe {
     /+ (meta_xml includes output time-stamp) +/
     string _meta_xml = format(q"┃<?xml version="1.0" encoding="UTF-8"?>
   <office:document-meta xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:xl="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:grddl="http://www.w3.org/2003/g/data-view#" office:version="1.2">
@@ -939,11 +939,11 @@ template outputODT() {
     }
     // return 0;
   }
-  string mimetype() {
+  string mimetype() @safe {
     string mimetype_ = format(q"┃application/vnd.oasis.opendocument.text┃");
     return mimetype_;
   }
-  string manifest_rdf() {
+  string manifest_rdf() @safe {
     string _manifest_rdf = format(q"┃<?xml version="1.0" encoding="utf-8"?>
   <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
     <rdf:Description rdf:about="styles.xml">
@@ -965,7 +965,7 @@ template outputODT() {
   ┃");
     return _manifest_rdf;
   }
-  string settings_xml() {
+  string settings_xml() @safe {
     string _settings_xml = format(q"┃<?xml version="1.0" encoding="UTF-8"?>
   <office:document-settings xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:xl="http://www.w3.org/1999/xlink" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooo="http://openoffice.org/2004/office" office:version="1.2">
     <office:settings>
@@ -1065,7 +1065,7 @@ template outputODT() {
   ┃");
     return _settings_xml;
   }
-  string styles_xml() {
+  string styles_xml() @safe {
     string _styles_xml = format(q"┃<?xml version="1.0" encoding="UTF-8"?>
   <office:document-styles xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:xl="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:rpt="http://openoffice.org/2005/report" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:css3t="http://www.w3.org/TR/css3-text/" office:version="1.2">
     <office:font-face-decls>
diff --git a/src/doc_reform/io_out/xmls.d b/src/doc_reform/io_out/xmls.d
index a88dced..74ebf82 100644
--- a/src/doc_reform/io_out/xmls.d
+++ b/src/doc_reform/io_out/xmls.d
@@ -18,7 +18,7 @@ template outputXHTMLs() {
     string div_delimit(
                  string  part,
       return ref string  previous_part
-    ){
+    ) @safe {
       string delimit = "";
       string delimit_ = "";
       if (part != previous_part) {
@@ -45,7 +45,7 @@ template outputXHTMLs() {
       // you also need to close the last div, introduce a footer?
       return delimit;
     }
-    string special_characters_text(string _txt){
+    string special_characters_text(string _txt) @safe {
       _txt = _txt
         .replaceAll(rgx.xhtml_ampersand,    "&#38;")
         .replaceAll(rgx.xhtml_quotation,    "&#34;")
@@ -56,7 +56,7 @@ template outputXHTMLs() {
     }
     string special_characters(O)(
       const  O         obj,
-    ){
+    ) @safe {
       string _txt = special_characters_text(obj.text);
       if (!(obj.metainfo.is_a == "code")) {
         _txt = (_txt)
@@ -64,7 +64,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    string font_face(string _txt){
+    string font_face(string _txt) @safe {
       _txt = _txt
         .replaceAll(rgx.inline_emphasis,    ("<em>$1</em>"))
         .replaceAll(rgx.inline_bold,        ("<b>$1</b>"))
@@ -78,7 +78,7 @@ template outputXHTMLs() {
         .replaceAll(rgx.inline_cite,        ("<cite>$1</cite>"));
       return _txt;
     }
-    string _xhtml_anchor_tags(O)(O obj) {
+    string _xhtml_anchor_tags(O)(O obj) @safe {
       const(string[]) anchor_tags = obj.tags.anchor_tags;
       string tags="";
       if (anchor_tags.length > 0) {
@@ -92,7 +92,7 @@ template outputXHTMLs() {
     }
     string header_metadata(M)(
       M  doc_matters,
-    ) {
+    ) @safe {
       string _publisher="Publisher"; // TODO
       string o;
       o = format(q"┃<!-- spine header metadata -->
@@ -129,7 +129,7 @@ template outputXHTMLs() {
     }
     string site_info_button(M)(
       M  doc_matters,
-    ) {
+    ) @safe {
       string _locations;
       if (doc_matters.conf_make_meta.make.home_button_text.length > 0) {
         _locations = (doc_matters.conf_make_meta.make.home_button_text)
@@ -153,7 +153,7 @@ template outputXHTMLs() {
     }
     string inline_search_form(M)(
       M  doc_matters,
-    ) {
+    ) @safe {
       string _action="http://www.sisudoc.org/cgi-bin/search.cgi";
       string _db="spine.7a.manual";
       string o;
@@ -189,7 +189,7 @@ template outputXHTMLs() {
     string html_head(M)(
       M  doc_matters,
       string type,
-    ) {
+    ) @safe {
     string _manifest = "";
     if (doc_matters.opt.action.workon) {
       _manifest = format(q"┃
@@ -243,7 +243,7 @@ template outputXHTMLs() {
     }
     string epub3_seg_head(M)(
       M  doc_matters,
-    ) {
+    ) @safe {
       string html_base = format(q"┃<!DOCTYPE html>
     <html>┃",
     );
@@ -309,7 +309,7 @@ template outputXHTMLs() {
       );
       return o;
     }
-    string tail() {
+    string tail() @safe {
       string o;
       o = format(q"┃
       <a name="bottom" id="bottom"></a>
@@ -324,7 +324,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix    = ".html",
       string          _xml_type = "seg",
-    ) {
+    ) @safe {
       string _img_pth;
       if (_xml_type == "epub") {
         _img_pth = "image/";
@@ -351,7 +351,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string         _suffix   = ".html",
       string         _xml_type = "seg",
-    ) {
+    ) @safe {
       string seg_lvs;
       if (obj.has.inline_links) {
         if  (obj.metainfo.is_a != "code") {
@@ -440,7 +440,7 @@ template outputXHTMLs() {
       string          _txt,
       const        O  obj,
                    M  doc_matters,
-    ) {
+    ) @safe {
       if (obj.has.inline_notes_reg) {
         _txt = font_face(_txt);
         _txt = _txt.replaceAll(
@@ -471,7 +471,7 @@ template outputXHTMLs() {
       string          _txt,
       const        O  obj,
                    M  doc_matters,
-    ) {
+    ) @safe {
       string[] _endnotes;
       if (obj.has.inline_notes_star) {
         _txt = font_face(_txt);
@@ -536,7 +536,7 @@ template outputXHTMLs() {
       const        O  obj,
                    M  doc_matters,
       string          _suffix = ".html",
-    ) {
+    ) @safe {
       if (obj.metainfo.dummy_heading
         && (obj.metainfo.is_a == "toc" || obj.metainfo.is_a == "heading")) {
         _txt = "";
@@ -553,7 +553,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "seg",
-    ) {
+    ) @safe {
       if (obj.metainfo.dummy_heading
         && ((_xml_type == "epub"
         && (obj.metainfo.is_a == "toc" || obj.metainfo.is_a == "heading"))
@@ -570,7 +570,7 @@ template outputXHTMLs() {
     string lev4_heading_subtoc(O,M)(
       const        O  obj,
                    M  doc_matters,
-    ) {
+    ) @safe {
       char[] lev4_subtoc;
       lev4_subtoc ~= "  <div class=\"nav\">\n";
       foreach (subtoc; obj.tags.lev4_subtoc) {
@@ -597,7 +597,7 @@ template outputXHTMLs() {
     auto nav_pre_next_svg(O,M)(
       const        O  obj,
                    M  doc_matters,
-    ) {
+    ) @safe {
       string prev, next, toc;
       string harvest_link = (doc_matters.opt.action.harvest_link)
       ? format(q"┃<p class="tiny">[<a href="../../../topics.html">&nbsp;T&nbsp;</a>|<a href="../../../authors.html">&nbsp;A&nbsp;</a>]</p>┃")
@@ -684,7 +684,7 @@ template outputXHTMLs() {
       const O      obj,
             M      doc_matters,
       string            _xml_type = "html",
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body" || "frontmatter" || "backmatter");
       assert(obj.metainfo.is_of_section == "body" || "toc" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "para");
@@ -749,7 +749,7 @@ template outputXHTMLs() {
       const        O  obj,
                    M  doc_matters,
       string          _suffix = ".html",
-    ) {
+    ) @safe {
       _txt = inline_markup_scroll(_txt, obj, doc_matters, _suffix);
       string o = heading(_txt, obj, doc_matters);
       return o;
@@ -760,7 +760,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0];
       string[] _endnotes = t[1];
@@ -775,7 +775,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body" || "frontmatter" || "backmatter");
       assert(obj.metainfo.is_of_section == "body" || "toc" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "para");
@@ -822,7 +822,7 @@ template outputXHTMLs() {
       const        O  obj,
                    M  doc_matters,
       string          _suffix = ".html",
-    ) {
+    ) @safe {
       if (obj.metainfo.is_a == "toc" && _txt.match(rgx.inline_link_toc_to_backmatter)) {
         _txt = _txt.replaceAll(rgx.inline_link_toc_to_backmatter, "┤#section_$1├");
       }
@@ -836,7 +836,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0].to!string;
       string[] _endnotes = t[1];
@@ -851,7 +851,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -888,7 +888,7 @@ template outputXHTMLs() {
       const        O  obj,
                    M  doc_matters,
       string          _suffix = ".html",
-    ) {
+    ) @safe {
       _txt = inline_markup_scroll(_txt, obj, doc_matters, _suffix);
       string o = quote(_txt, obj, doc_matters);
       return o;
@@ -899,7 +899,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0].to!string;
       string[] _endnotes = t[1];
@@ -914,7 +914,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -952,7 +952,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       _txt = inline_markup_scroll(_txt, obj, doc_matters, _suffix);
       string o = group(_txt, obj, doc_matters);
       return o;
@@ -963,7 +963,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0].to!string;
       string[] _endnotes = t[1];
@@ -978,7 +978,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -1012,7 +1012,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       _txt = inline_markup_scroll(_txt, obj, doc_matters, _suffix);
       string o = block(_txt, obj, doc_matters);
       return o;
@@ -1023,7 +1023,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0].to!string;
       string[] _endnotes = t[1];
@@ -1038,7 +1038,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body" || "glossary" || "bibliography" || "bookindex" || "blurb");
       assert(obj.metainfo.is_of_type    == "block");
@@ -1072,7 +1072,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       _txt = inline_markup_scroll(_txt, obj, doc_matters, _suffix);
       string o = verse(_txt, obj, doc_matters);
       return o;
@@ -1083,7 +1083,7 @@ template outputXHTMLs() {
                    M  doc_matters,
       string          _suffix = ".html",
       string          _xml_type = "html",
-    ) {
+    ) @safe {
       auto t = inline_markup_seg(_txt, obj, doc_matters, _suffix, _xml_type);
       _txt = t[0].to!string;
       string[] _endnotes = t[1];
@@ -1097,7 +1097,7 @@ template outputXHTMLs() {
     auto tablarize(O)(
       string            _txt,
       const        O    obj,
-    ) {
+    ) @safe {
       string[] _table_rows = (_txt).split(rgx.table_delimiter_row);
       string[] _table_cols;
       string _table;
@@ -1131,7 +1131,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body");
       assert(obj.metainfo.is_of_type    == "block");
@@ -1165,7 +1165,7 @@ template outputXHTMLs() {
             string _txt,
       const O      obj,
             M      doc_matters,
-    ) {
+    ) @safe {
       assert(obj.metainfo.is_of_part    == "body");
       assert(obj.metainfo.is_of_section == "body");
       assert(obj.metainfo.is_of_type    == "block");
diff --git a/src/doc_reform/io_out/xmls_css.d b/src/doc_reform/io_out/xmls_css.d
index 2c3eb77..0974637 100644
--- a/src/doc_reform/io_out/xmls_css.d
+++ b/src/doc_reform/io_out/xmls_css.d
@@ -4,7 +4,7 @@
 module doc_reform.io_out.xmls_css;
 template spineCss() {
   import std.format;
-  auto spineCss(M)(M doc_matters) {
+  auto spineCss(M)(M doc_matters) @safe {
     string _css_indent = format(q"┃
   /* indent */
   p.norm { }
@@ -4162,7 +4162,7 @@ template spineCss() {
     _css_indent,
     _color_ocn_dark,
 );
-    auto css_() {
+    auto css_() @safe {
       struct _CSS {
         string html_seg    = "/* spine css html seg stylesheet */\n";
         string html_scroll = "/* spine css html scroll stylesheet */\n";
diff --git a/src/doc_reform/meta/conf_make_meta_json.d b/src/doc_reform/meta/conf_make_meta_json.d
index b80ea4f..95f9c2a 100644
--- a/src/doc_reform/meta/conf_make_meta_json.d
+++ b/src/doc_reform/meta/conf_make_meta_json.d
@@ -21,7 +21,7 @@ static template contentJSONtoSpineStruct() {
     doc_reform.meta.defaults,
     doc_reform.meta.rgx;
   ConfComposite _struct_composite;
-  auto contentJSONtoSpineStruct(C,J,M)(C _struct_composite, J _json, M _manifested, string _identifier) {
+  auto contentJSONtoSpineStruct(C,J,M)(C _struct_composite, J _json, M _manifested, string _identifier) @safe {
     mixin spineRgxInit;
     static auto rgx = Rgx();
     debug (json) {
diff --git a/src/doc_reform/meta/conf_make_meta_structs.d b/src/doc_reform/meta/conf_make_meta_structs.d
index 7875777..10a754a 100644
--- a/src/doc_reform/meta/conf_make_meta_structs.d
+++ b/src/doc_reform/meta/conf_make_meta_structs.d
@@ -17,7 +17,7 @@ mixin spineRgxInit;
 static auto rgx = Rgx();
 mixin InternalMarkup;
 auto mkup = InlineMarkup();
-string url_markup(string line) {
+string url_markup(string line) @safe {
   string line_ = line
     .replaceAll(
       rgx.smid_inline_link_markup_regular,
diff --git a/src/doc_reform/meta/metadoc.d b/src/doc_reform/meta/metadoc.d
index 1620281..b81dfb2 100644
--- a/src/doc_reform/meta/metadoc.d
+++ b/src/doc_reform/meta/metadoc.d
@@ -125,7 +125,7 @@ template spineAbstraction() {
           string ver() {
             return program_info.ver;
           }
-          string name_and_version() {
+          string name_and_version() @trusted {
             return format(
               "%s-%s",
               name,
diff --git a/src/doc_reform/meta/metadoc_from_src.d b/src/doc_reform/meta/metadoc_from_src.d
index ab87eb2..35d70d5 100644
--- a/src/doc_reform/meta/metadoc_from_src.d
+++ b/src/doc_reform/meta/metadoc_from_src.d
@@ -309,7 +309,7 @@ template docAbstraction() {
     return tag_assoc;
   }
                                                                                 /+ ↓ abstract marked up document +/
-  auto docAbstraction(CMM,Opt,Mf)(
+  auto docAbstraction(CMM,Opt,Mf) (
     char[][]           markup_sourcefile_content,
     CMM                conf_make_meta,
     Opt                opt_action,
@@ -2381,7 +2381,7 @@ template docAbstraction() {
                                                                                 /+ post loop markup document/text ↑ +/
   }                                                                             /+ ← closed: abstract doc source +/
                                                                                 /+ ↓ abstraction functions +/
-  static string[string] object_reset()(string[string] an_object) {
+  static string[string] object_reset()(string[string] an_object) @safe {
     an_object.remove("body_nugget");
     an_object.remove("substantive");
     an_object.remove("is");
@@ -2403,7 +2403,7 @@ template docAbstraction() {
   static int[string]         _check_ocn_status_()(
     char[]           line,
     int[string]      obj_type_status,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (!(line.empty)
       && (obj_type_status["ocn_status_off_for_multiple_objects"] == OCN_off_block_status.off)
@@ -2462,7 +2462,7 @@ template docAbstraction() {
   char[] _doc_header_and_make_substitutions_(CMM)(
     char[]  line,
     CMM     conf_make_meta,
-  ) {
+  ) @safe {
     enum Substitute { match, markup, }
     if (conf_make_meta.make.substitute) {
       foreach(substitution_pair; conf_make_meta.make.substitute) {
@@ -2477,7 +2477,7 @@ template docAbstraction() {
   char[] _doc_header_and_make_substitutions_fontface_(CMM)(
     char[]  line,
     CMM     conf_make_meta,
-  ) {
+  ) @safe {
     enum Substitute { match, markup, }
     if ( conf_make_meta.make.bold) {
       line = line.replaceAll(
@@ -2504,7 +2504,7 @@ template docAbstraction() {
     return ref int[string]    obj_type_status,
     return ref uint[string]   dochas,
     return ref string[string] object_number_poem
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (auto m = line.matchFirst(rgx.block_curly_code_open)) {
       dochas["codeblock"]++;
@@ -2689,7 +2689,7 @@ template docAbstraction() {
                char[]          line,
                string[string]  an_object,
     return ref int[string]     obj_type_status
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (obj_type_status["curly_quote"] == TriState.on) {
       if (line.matchFirst(rgx.block_curly_quote_close)) {
@@ -2728,7 +2728,7 @@ template docAbstraction() {
                char[]          line,
                string[string]  an_object,
     return ref int[string]     obj_type_status
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (obj_type_status["curly_group"] == State.on) {
       if (line.matchFirst(rgx.block_curly_group_close)) {
@@ -2767,7 +2767,7 @@ template docAbstraction() {
                char[]          line,
                string[string]  an_object,
     return ref int[string]     obj_type_status
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (obj_type_status["curly_block"] == TriState.on) {
       if (line.matchFirst(rgx.block_curly_block_close)) {
@@ -2810,7 +2810,7 @@ template docAbstraction() {
                string[string]  object_number_poem,
                CMM             conf_make_meta,
                string[string]  tag_in_seg,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (obj_type_status["curly_poem"] == TriState.on) {
       if (line.matchFirst(rgx.block_curly_poem_close)) {
@@ -3048,7 +3048,7 @@ template docAbstraction() {
                char[]          line,
     return ref string[string]  an_object,
     return ref int[string]     obj_type_status
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (obj_type_status["curly_code"] == TriState.on) {
       if (line.matchFirst(rgx.block_curly_code_close)) {
@@ -3699,7 +3699,7 @@ template docAbstraction() {
                string[]              _make_unmarked_headings,
     return ref Regex!(char)[string]  heading_match_rgx,
     return ref int[string]           obj_type_status
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if ((_make_unmarked_headings.length > 2)
     && (obj_type_status["make_headings"] == State.off)) {                        /+ headings found +/
@@ -3779,7 +3779,7 @@ template docAbstraction() {
                int[string]           line_occur,
     return ref Regex!(char)[string]  heading_match_rgx,
     return ref int[string]           obj_type_status
-  ) {
+  ) @safe {
     if ((obj_type_status["make_headings"] == State.on)
     && ((line_occur["para"] == State.off)
     && (line_occur["heading"] == State.off))
@@ -3839,7 +3839,7 @@ template docAbstraction() {
     return ref int[string]     collapsed_lev,
     return ref int[string]     obj_type_status,
     return ref CMM             conf_make_meta,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (auto m = line.match(rgx.heading)) {                                      /+ heading match +/
       ++line_occur["heading"];
@@ -3991,7 +3991,7 @@ template docAbstraction() {
     return ref bool            bullet,
     return ref int[string]     obj_type_status,
     return ref int[string]     line_occur,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     if (line_occur["para"] == State.off) {
       line = font_faces_line(line);
@@ -4038,7 +4038,7 @@ template docAbstraction() {
   }
   char[] font_faces_line()(
     char[]  textline,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     if (textline.match(rgx.inline_faces_line)) {
@@ -4053,7 +4053,7 @@ template docAbstraction() {
   ObjGenericComposite flow_table_instructions(H)(
     return ref ObjGenericComposite  table_object,
                H                    table_head,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     table_object.metainfo.is_of_part      = "body";
     table_object.metainfo.is_of_section   = "body";
@@ -4078,7 +4078,7 @@ template docAbstraction() {
   ObjGenericComposite flow_table_array_munge(T)(
     return ref ObjGenericComposite  table_object,
     return ref T                    table_array,
-  ) {
+  ) @safe {
     static auto rgx = Rgx();
     static auto mng = InlineMarkup();
     string _table_substantive;
@@ -4237,7 +4237,7 @@ template docAbstraction() {
     int ocn_digit, ocn_object_number, ocn_on_, ocn_off_, ocn_bkidx, ocn_bkidx_;
     string object_identifier;
     bool ocn_is_off;
-    auto ocn_emitter(int ocn_status_flag) {
+    auto ocn_emitter(int ocn_status_flag) @safe {
       OCNset ocn;
       assert(ocn_status_flag <= OCNstatus.reset);
       ocn_object_number = ocn_bkidx = 0;
@@ -4290,13 +4290,13 @@ template docAbstraction() {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     int stage_reset_note_numbers = true;
-    private auto initialize_note_numbers() {
+    private auto initialize_note_numbers() @safe {
       n_foot = 0;
       n_foot_reg = 0;
       n_foot_sp_asterisk = 0;
       n_foot_sp_plus = 0;
     }
-    static auto images()(string obj_txt_in) {
+    static auto images()(string obj_txt_in) @safe {
       static auto mng = InlineMarkup();
       /+ url matched +/
       obj_txt_in = obj_txt_in.replaceAll(rgx.inline_notes_al_special, ""); // TODO reinstate when special footnotes are implemented
@@ -4326,7 +4326,7 @@ template docAbstraction() {
       }
       return obj_txt_in;
     }
-    auto footnotes_endnotes_markup_and_number_or_stars()(string obj_txt_in, bool reset_note_numbers) {
+    auto footnotes_endnotes_markup_and_number_or_stars()(string obj_txt_in, bool reset_note_numbers) @safe {
       /+ endnotes (regular) +/
       bool flg_notes_reg  = false;
       bool flg_notes_star = false;
@@ -4393,7 +4393,7 @@ template docAbstraction() {
     private auto object_notes_and_links_()(
       string obj_txt_in,
       bool reset_note_numbers=false
-    ) {
+    ) @safe {
       obj_txt_out = "";
       bool urls = false;
       bool images_without_dimensions = false;
@@ -4456,7 +4456,7 @@ template docAbstraction() {
     auto munge_heading()(
       string obj_txt_in,
       bool reset_note_numbers=false
-    ) {
+    ) @safe {
       obj_txt["munge"] = obj_txt_in
        .replaceFirst(rgx.heading, "")
        .replaceFirst(rgx.object_number_off_all, "")
@@ -4472,7 +4472,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    auto munge_para()(string obj_txt_in) {
+    auto munge_para()(string obj_txt_in) @safe {
       obj_txt["munge"]=(obj_txt_in)
         .replaceFirst(rgx.para_attribs, "")
         .replaceFirst(rgx.object_number_off_all, "");
@@ -4485,47 +4485,47 @@ template docAbstraction() {
       }
       return t;
     }
-    string munge_quote()(string obj_txt_in) {
+    string munge_quote()(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
     invariant() {
     }
-    auto munge_group(string obj_txt_in) {
+    auto munge_group(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       auto t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    auto munge_block()(string obj_txt_in) {
+    auto munge_block()(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       auto t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    auto munge_verse()(string obj_txt_in) {
+    auto munge_verse()(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       auto t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    string munge_code()(string obj_txt_in) {
+    string munge_code()(string obj_txt_in) @safe {
       obj_txt_in = obj_txt_in.replaceAll(rgx.space, mkup.nbsp);
       obj_txt["munge"] = obj_txt_in;
       return obj_txt["munge"];
     }
     invariant() {
     }
-    string munge_table()(string obj_txt_in) {
+    string munge_table()(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
     invariant() {
     }
-    string munge_comment()(string obj_txt_in) {
+    string munge_comment()(string obj_txt_in) @safe {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
@@ -4542,7 +4542,7 @@ template docAbstraction() {
       string           obj_key_,
       CMM              conf_make_meta,
       Flag!"_new_doc"  _new_doc
-    ) {
+    ) @safe {
       obj_txt["munge"] = obj_[obj_key_].dup;
       obj_txt["munge"] = (obj_["is"].match(ctRegex!(`verse|code`)))
       ? obj_txt["munge"]
@@ -4632,7 +4632,7 @@ template docAbstraction() {
     }
     auto _clean_heading_toc_()(
       char[] heading_toc_,
-    ) {
+    ) @safe {
      auto m = (cast(char[]) heading_toc_).matchFirst(rgx.heading);
      heading_toc_ = (m.post).replaceAll(
        rgx.inline_notes_curly_gen,
@@ -4646,7 +4646,7 @@ template docAbstraction() {
                  string                 _anchor_tag,
       return ref string[][string]       lev4_subtoc,
                  ObjGenericComposite[]  the_table_of_contents_section,
-    ) {
+    ) @safe {
       ObjGenericComposite comp_obj_toc;
       mixin InternalMarkup;
       static auto mkup = InlineMarkup();
@@ -4729,7 +4729,7 @@ template docAbstraction() {
       string[string]   obj_,
       CMM              conf_make_meta,
       bool             _new_doc,
-    ) {
+    ) @safe {
       if (_new_doc) {
         heading_num = [ 0, 0, 0, 0 ];
         heading_number_auto_composite = "";
@@ -4872,7 +4872,7 @@ template docAbstraction() {
       string munge_,
       string lev_,
       bool   _new_doc
-    ) {
+    ) @safe {
       if (!(munge_.match(rgx.heading_anchor_tag))) {
         if (munge_.match(rgx.heading_identify_anchor_tag)) {
           if (auto m = munge_.match(rgx.heading_extract_named_anchor_tag)) {
@@ -4909,7 +4909,7 @@ template docAbstraction() {
       string              obj_is_,
       string              obj_raw,
       ObjGenericComposite _comp_obj_heading,
-    ) {
+    ) @safe {
       scope(exit) {
         destroy(obj_is_);
         destroy(obj_raw);
@@ -4992,7 +4992,7 @@ template docAbstraction() {
       }
       return _obj_attributes;
     }
-    string txt_heading()(string obj_txt_in) {
+    string txt_heading()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"para\","
       ~ " \"is\": \"heading\"";
@@ -5000,7 +5000,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_para()(string obj_txt_in) {
+    string txt_para()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"para\","
       ~ " \"is\": \"para\"";
@@ -5008,7 +5008,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_quote()(string obj_txt_in) {
+    string txt_quote()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"quote\"";
@@ -5016,7 +5016,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_group()(string obj_txt_in) {
+    string txt_group()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"group\"";
@@ -5024,7 +5024,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_block()(string obj_txt_in) {
+    string txt_block()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"block\"";
@@ -5032,7 +5032,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_verse()(string obj_txt_in) {
+    string txt_verse()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"verse\"";
@@ -5040,7 +5040,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_code()(string obj_txt_in) {
+    string txt_code()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"code\"";
@@ -5048,7 +5048,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_table()(string obj_txt_in) {
+    string txt_table()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"table\"";
@@ -5056,7 +5056,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_comment()(string obj_txt_in) {
+    string txt_comment()(string obj_txt_in) @safe {
       _obj_attributes = " \"use\": \"comment\","
       ~ " \"of\": \"comment\","
       ~ " \"is\": \"comment\"";
@@ -5068,7 +5068,7 @@ template docAbstraction() {
       string              _obj_attrib,
       string              obj_is_,
       ObjGenericComposite _comp_obj_heading,
-    ) {
+    ) @safe {
       JSONValue oa_j = parseJSON(_obj_attrib);
       assert(
         (oa_j.type == JSON_TYPE.OBJECT)
@@ -5099,7 +5099,7 @@ template docAbstraction() {
       string bookindex_section,
       N      obj_cite_digits,
       S      tag_in_seg,
-    ) {
+    ) @safe {
       debug(asserts) {
         static assert(is(typeof(obj_cite_digits.object_number) == int));
       }
@@ -5167,7 +5167,7 @@ template docAbstraction() {
     int mkn, skn;
     void bookindex_report_indented()(
       string[][string][string] bookindex_unordered_hashes
-    ) {
+    ) @safe {
       auto mainkeys
         = bookindex_unordered_hashes.byKey.array.sort().release;
       foreach (mainkey; mainkeys) {
@@ -5195,7 +5195,7 @@ template docAbstraction() {
     static auto munge = ObjInlineMarkupMunge();
     void bookindex_write_section()(
       string[][string][string] bookindex_unordered_hashes
-    ) {
+    ) @safe {
       auto mainkeys =
         bookindex_unordered_hashes.byKey.array
         .sort!("toUpper(a) < toUpper(b)", SwapStrategy.stable).release;
@@ -5390,7 +5390,7 @@ template docAbstraction() {
       ObjGenericComposite[] contents_am,
       string[string]        tag_in_seg,
       int                   cntr,
-    ) {
+    ) @safe {
       assert((contents_am[cntr].metainfo.is_a == "para")
       || (contents_am[cntr].metainfo.is_a     == "heading")
       || (contents_am[cntr].metainfo.is_a     == "quote")
@@ -5466,7 +5466,7 @@ template docAbstraction() {
       }
       return object_notes;
     }
-    private auto gathered_notes() {
+    private auto gathered_notes() @safe {
       string[][string] endnotes_;
       if (object_notes.length > 1) {
         endnotes_["notes"] = (object_notes["notes"].split(rgx.break_string))[0..$-1];
@@ -5480,7 +5480,7 @@ template docAbstraction() {
     private auto endnote_objects(N,O)(
       N              obj_cite_digits,
       O              opt_action,
-    ) {
+    ) @safe {
       mixin spineNode;
       ObjGenericComposite[] the_endnotes_section;
       auto endnotes_ = gathered_notes();
@@ -5683,7 +5683,7 @@ template docAbstraction() {
       int            cntr_,
       int            ptr_,
       string         is_
-    ) {
+    ) @safe {
       debug(asserts) {
         static assert(is(typeof(obj_cite_digits.object_number) == int));
       }
@@ -5745,7 +5745,7 @@ template docAbstraction() {
       fNr            flag_notes_reg,
       fNs            flag_notes_star,
       fL             flag_links,
-    ) {
+    ) @safe {
       debug(asserts) {
         static assert(is(typeof(lev)                                       == string));
         static assert(is(typeof(obj_cite_digits.object_number)             == int));
@@ -5930,7 +5930,7 @@ template docAbstraction() {
   pure void assertions_doc_structure()(
     string[string]  an_object,
     int[string]     lv
-  ) {
+  ) @safe {
     if (lv["h3"] > State.off) {
       assert(lv["h0"] > State.off);
       assert(lv["h1"] > State.off);
@@ -6102,7 +6102,7 @@ template docAbstraction() {
       break;
     }
   }
-  pure void assertions_flag_types_block_status_none_or_closed()(int[string] obj_type_status) {
+  pure void assertions_flag_types_block_status_none_or_closed()(int[string] obj_type_status) @safe {
     assert(
       (obj_type_status["code"] == TriState.off)
       || (obj_type_status["code"] == TriState.closing),
@@ -6127,7 +6127,7 @@ template docAbstraction() {
                                                                                 /+ abstraction functions assertions ↑ +/
 }                                                                               /+ ← closed: template docAbstraction +/
 template docSectKeysSeq() {
-  auto docSectKeysSeq(string[][string] document_section_keys_sequenced) {
+  auto docSectKeysSeq(string[][string] document_section_keys_sequenced) @safe {
     struct doc_sect_keys_seq {
       string[] scroll() {
         return document_section_keys_sequenced["scroll"];
diff --git a/src/doc_reform/meta/metadoc_harvest.d b/src/doc_reform/meta/metadoc_harvest.d
index ca9801f..704e960 100644
--- a/src/doc_reform/meta/metadoc_harvest.d
+++ b/src/doc_reform/meta/metadoc_harvest.d
@@ -3,7 +3,7 @@ template spineMetaDocHarvest() {
   auto spineMetaDocHarvest(T,H)(
     T  doc_matters,
     H  hvst,
-  ) {
+  ) @safe {
     import
       doc_reform.meta.defaults,
       doc_reform.meta.rgx;
diff --git a/src/doc_reform/spine.d b/src/doc_reform/spine.d
index 4476b6d..b30773a 100755
--- a/src/doc_reform/spine.d
+++ b/src/doc_reform/spine.d
@@ -244,16 +244,16 @@ void main(string[] args) {
   }
   enum outTask { source_or_pod, sqlite, sqlite_multi, latex, odt, epub, html_scroll, html_seg, html_stuff }
   struct OptActions {
-    bool assertions() {
+    bool assertions() @trusted {
       return opts["assertions"];
     }
-    bool concordance() {
+    bool concordance() @trusted {
       return opts["concordance"];
     }
     auto config_path_set() {
       return settings["config"];
     }
-    bool css_theme_default() {
+    bool css_theme_default() @trusted {
       bool _is_light;
       if (opts["light"] || opts["theme-light"]) {
         _is_light = true;
@@ -264,94 +264,94 @@ void main(string[] args) {
       }
       return _is_light;
     }
-    bool debug_do() {
+    bool debug_do() @trusted {
       return opts["debug"];
     }
-    bool digest() {
+    bool digest() @trusted {
       return opts["digest"];
     }
-    bool epub() {
+    bool epub() @trusted {
       return opts["epub"];
     }
-    bool harvest_link() {
+    bool harvest_link() @trusted {
       return (opts["harvest-link"]) ? true : false;
     }
-    bool harvest() {
+    bool harvest() @trusted {
       return (opts["harvest"] || opts["harvest-authors"] || opts["harvest-topics"]) ? true : false;
     }
-    bool harvest_authors() {
+    bool harvest_authors() @trusted {
       return (opts["harvest"] || opts["harvest-authors"]) ? true : false;
     }
-    bool harvest_topics() {
+    bool harvest_topics() @trusted {
       return (opts["harvest"] || opts["harvest-topics"]) ? true : false;
     }
-    bool html() {
+    bool html() @trusted {
       return (opts["html"] || opts["html-seg"] || opts["html-scroll"]) ? true : false;
     }
-    bool html_seg() {
+    bool html_seg() @trusted {
       return (opts["html"] || opts["html-seg"]) ? true : false;
     }
-    bool html_scroll() {
+    bool html_scroll() @trusted {
       return (opts["html"] || opts["html-scroll"]) ? true : false;
     }
-    bool html_stuff() {
+    bool html_stuff() @trusted {
       return (opts["html"] || opts["html-scroll"] || opts["html-seg"]) ? true : false;
     }
-    bool latex() {
+    bool latex() @trusted {
       return (opts["latex"] || opts["pdf"]) ? true : false;
     }
-    bool odt() {
+    bool odt() @trusted {
       return (opts["odf"] || opts["odt"]) ? true : false;
     }
-    bool manifest() {
+    bool manifest() @trusted {
       return opts["manifest"];
     }
-    bool ocn_hidden() {
+    bool ocn_hidden() @trusted {
       return opts["hide-ocn"];
     }
-    bool ocn_off() {
+    bool ocn_off() @trusted {
       return opts["ocn-off"];
     }
-    bool quiet() {
+    bool quiet() @trusted {
       return opts["quiet"];
     }
-    bool pod() {
+    bool pod() @trusted {
       return opts["pod"];
     }
-    bool show_summary() {
+    bool show_summary() @trusted {
       return opts["show-summary"];
     }
-    bool show_make() {
+    bool show_make() @trusted {
       return opts["show-make"];
     }
-    bool show_metadata() {
+    bool show_metadata() @trusted {
       return opts["show-metadata"];
     }
-    bool show_config() {
+    bool show_config() @trusted {
       return opts["show-config"];
     }
-    bool source() {
+    bool source() @trusted {
       return opts["source"];
     }
-    bool source_or_pod() {
+    bool source_or_pod() @trusted {
       return (opts["pod"] || opts["source"]) ? true : false;
     }
-    bool sqlite_discrete() {
+    bool sqlite_discrete() @trusted {
       return opts["sqlite-discrete"];
     }
-    bool sqlite_db_drop() {
+    bool sqlite_db_drop() @trusted {
       return (opts["sqlite-db-recreate"] || opts["sqlite-db-drop"]) ? true : false;
     }
-    bool sqlite_db_create() {
+    bool sqlite_db_create() @trusted {
       return (opts["sqlite-db-recreate"] || opts["sqlite-db-create"]) ? true : false;
     }
-    bool sqlite_delete() {
+    bool sqlite_delete() @trusted {
       return opts["sqlite-delete"];
     }
-    bool sqlite_update() {
+    bool sqlite_update() @trusted {
       return (opts["sqlite-update"] || opts["sqlite-insert"]) ? true : false;
     }
-    bool sqlite_shared_db_action() {
+    bool sqlite_shared_db_action() @trusted {
       return (
         opts["sqlite-db-recreate"]
         || opts["sqlite-db-create"]
@@ -360,46 +360,46 @@ void main(string[] args) {
         || opts["sqlite-update"]
       ) ? true : false;
     }
-    bool text() {
+    bool text() @trusted {
       return opts["text"];
     }
-    bool verbose() {
+    bool verbose() @trusted {
       return (opts["verbose"] || opts["very-verbose"]) ? true : false;
     }
-    bool very_verbose() {
+    bool very_verbose() @trusted {
       return opts["very-verbose"];
     }
-    bool xhtml() {
+    bool xhtml() @trusted {
       return opts["xhtml"];
     }
-    bool section_toc() {
+    bool section_toc() @trusted {
       return opts["section_toc"];
     }
-    bool section_body() {
+    bool section_body() @trusted {
       return opts["section_body"];
     }
-    bool section_endnotes() {
+    bool section_endnotes() @trusted {
       return opts["section_endnotes"];
     }
-    bool section_glossary() {
+    bool section_glossary() @trusted {
       return opts["section_glossary"];
     }
-    bool section_biblio() {
+    bool section_biblio() @trusted {
       return opts["section_biblio"];
     }
-    bool section_bookindex() {
+    bool section_bookindex() @trusted {
       return opts["section_bookindex"];
     }
-    bool section_blurb() {
+    bool section_blurb() @trusted {
       return opts["section_blurb"];
     }
-    bool backmatter() {
+    bool backmatter() @trusted {
       return opts["backmatter"];
     }
-    bool skip_output() {
+    bool skip_output() @trusted {
       return opts["skip-output"];
     }
-    bool workon() {
+    bool workon() @trusted {
       return opts["workon"];
     }
     auto languages_set() {
@@ -411,7 +411,7 @@ void main(string[] args) {
     auto sqlite_filename() {
       return settings["sqlite-filename"];
     }
-    bool parallelise() {
+    bool parallelise() @trusted {
       bool _is;
       if (opts["parallel"] == true) {
         _is = true;
@@ -435,7 +435,7 @@ void main(string[] args) {
       } else { _is = false; }
       return _is;
     }
-    bool parallelise_subprocesses() {
+    bool parallelise_subprocesses() @trusted {
       return opts["parallel-subprocesses"];
     }
     auto output_task_scheduler() {
@@ -466,7 +466,7 @@ void main(string[] args) {
       }
       return schedule.sort().uniq;
     }
-    bool abstraction() {
+    bool abstraction() @trusted {
       return (
         opts["abstraction"]
         || concordance
@@ -482,7 +482,7 @@ void main(string[] args) {
         || sqlite_update
       ) ? true : false;
     }
-    bool meta_processing_general() {
+    bool meta_processing_general() @trusted {
       return (
         opts["abstraction"]
         || html
@@ -493,7 +493,7 @@ void main(string[] args) {
         || sqlite_update
       ) ? true :false;
     }
-    bool meta_processing_xml_dom() {
+    bool meta_processing_xml_dom() @trusted {
       return (
         opts["abstraction"]
         || html