mark modules as @safe: (& identify what is not)

16 files changed, 137 insertions, 121 deletions

diff --git a/src/doc_reform/io_out/create_zip_file.d b/src/doc_reform/io_out/create_zip_file.d
index b6feacf..63e243b 100644
--- a/src/doc_reform/io_out/create_zip_file.d
+++ b/src/doc_reform/io_out/create_zip_file.d
@@ -48,13 +48,14 @@
 
 +/
 module doc_reform.io_out.create_zip_file;
+@safe:
 template createZipFile() {
   import
     std.file,
     std.outbuffer,
     std.string,
     std.zip;
-  @safe void createZipFile(
+  void createZipFile(
     string zip_file_name,
     void[] compressed_zip_data,
   ) {
diff --git a/src/doc_reform/io_out/defaults.d b/src/doc_reform/io_out/defaults.d
index 0b21d20..2a51625 100644
--- a/src/doc_reform/io_out/defaults.d
+++ b/src/doc_reform/io_out/defaults.d
@@ -51,6 +51,7 @@
   default settings
 +/
 module doc_reform.io_out.defaults;
+@safe:
 
 template InternalMarkup() {
   import std.array;
@@ -100,7 +101,7 @@ template InternalMarkup() {
 template spineLanguageCodes() {
   /+ language codes +/
   struct Lang {
-    @safe static string[string][string] codes() {
+    static string[string][string] codes() {
       auto _lang_codes = [
         "am":    [ "c": "am",    "n": "Amharic",           "t": "Amharic",                   "xlp": "amharic"      ],
         "bg":    [ "c": "bg",    "n": "Bulgarian",         "t": "Български (Bəlgarski)",     "xlp": "bulgarian"    ],
@@ -167,15 +168,15 @@ template spineLanguageCodes() {
       ];
       return _lang_codes;
     }
-    @safe static string[] code_arr_ptr() {
+    static string[] code_arr_ptr() {
       string[] _lang_codes = ["am", "bg", "bn", "br", "ca", "cs", "cy", "da", "de", "el", "en", "eo", "es", "et", "eu", "fi", "fr", "ga", "gl", "he", "hi", "hr", "hy", "ia", "is", "it", "ja", "ko", "la", "lo", "lt", "lv", "ml", "mr", "nl", "no", "nn", "oc", "pl", "pt", "pt_BR", "ro", "ru", "sa", "se", "sk", "sl", "sq", "sr", "sv", "ta", "te", "th", "tk", "tr", "uk", "ur", "us", "vi", "zh", "en", "xx",];
       return _lang_codes;
     }
-    @safe static string[] code_arr() {
+    static string[] code_arr() {
       string[] _lang_codes = ["am", "bg", "bn", "br", "ca", "cs", "cy", "da", "de", "el", "en", "eo", "es", "et", "eu", "fi", "fr", "ga", "gl", "he", "hi", "hr", "hy", "ia", "is", "it", "ja", "ko", "la", "lo", "lt", "lv", "ml", "mr", "nl", "no", "nn", "oc", "pl", "pt", "pt_BR", "ro", "ru", "sa", "se", "sk", "sl", "sq", "sr", "sv", "ta", "te", "th", "tk", "tr", "uk", "ur", "vi", "zh"];
       return _lang_codes;
     }
-    @safe static auto codes_() {
+    static auto codes_() {
       return "(" ~ join(code_arr,"|") ~ ")";
     }
     static auto codes_regex() {
diff --git a/src/doc_reform/io_out/epub3.d b/src/doc_reform/io_out/epub3.d
index 808d9fb..cffc464 100644
--- a/src/doc_reform/io_out/epub3.d
+++ b/src/doc_reform/io_out/epub3.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.epub3;
+@safe:
 template outputEPub3() {
   import
     std.file,
@@ -66,7 +67,7 @@ template outputEPub3() {
   mixin outputXHTMLs;
   static auto rgx = RgxO();
   static auto rgx_xhtml = RgxXHTML();
-  @safe string special_characters_text(string _txt) {
+  string special_characters_text(string _txt) {
     _txt = _txt
       .replaceAll(rgx_xhtml.ampersand,    "&")  // "&"
       .replaceAll(rgx_xhtml.quotation,    """) // """
@@ -78,12 +79,12 @@ template outputEPub3() {
       .replaceAll(rgx.nbsp_char,          " ");
     return _txt;
   }
-  @safe string epub3_mimetypes() {
+  string epub3_mimetypes() {
     string o;
     o = format(q"┃application/epub+zip┃") ~ "\n";
     return o;
   }
-  @safe string epub3_container_xml() {
+  string epub3_container_xml() {
     string o;
     o = format(q"┃<?xml version="1.0" encoding="utf-8"?>┃") ~ "\n";
     o ~= format(q"┃<container version="1.0"
@@ -94,7 +95,7 @@ template outputEPub3() {
   </rootfiles>┃") ~ "\n</container>\n";
     return o;
   }
-  @safe 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) {
     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!
@@ -182,7 +183,7 @@ template outputEPub3() {
     }
     return content;
   }
-  @safe 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) {
     enum DomTags { none, open, close, close_and_open, open_still, }
     auto markup = InlineMarkup();
     static auto rgx = RgxO();
diff --git a/src/doc_reform/io_out/html.d b/src/doc_reform/io_out/html.d
index 397cb95..e7e21c2 100644
--- a/src/doc_reform/io_out/html.d
+++ b/src/doc_reform/io_out/html.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.html;
+@safe:
 template outputHTML() {
   import
     std.file,
@@ -63,7 +64,7 @@ template outputHTML() {
     doc_reform.io_out.xmls,
     doc_reform.io_out.xmls_css;
   mixin outputXHTMLs;
-  @safe void scroll(D,M)(
+  void scroll(D,M)(
     const        D    doc_abstraction,
                  M    doc_matters,
   ) {
@@ -270,7 +271,7 @@ template outputHTML() {
       writeln(" ", pth_html.fn_scroll(doc_matters.src.filename));
     }
   }
-  @safe void seg(D,M)(
+  void seg(D,M)(
     const D    doc_abstraction,
           M    doc_matters,
   ) {
@@ -557,7 +558,7 @@ template outputHTML() {
       writeln(" ", pth_html.fn_seg(doc_matters.src.filename, "toc"));
     }
   }
-  @safe void css(M)(M doc_matters) {
+  void css(M)(M doc_matters) {
     auto css = spineCss(doc_matters);
     auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
     try {
diff --git a/src/doc_reform/io_out/html_snippet.d b/src/doc_reform/io_out/html_snippet.d
index 73d861e..843f541 100644
--- a/src/doc_reform/io_out/html_snippet.d
+++ b/src/doc_reform/io_out/html_snippet.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.html_snippet;
+@safe:
 template htmlSnippet() {
   import
     std.file,
@@ -83,7 +84,7 @@ template htmlSnippet() {
     );
     return html_blank_default;
   }
-  @safe string special_characters_text(string _txt) {
+  string special_characters_text(string _txt) {
     mixin spineRgxOut;
     mixin spineRgxXHTML;
     static auto rgx = RgxO();
diff --git a/src/doc_reform/io_out/hub.d b/src/doc_reform/io_out/hub.d
index 16c866e..3be873e 100644
--- a/src/doc_reform/io_out/hub.d
+++ b/src/doc_reform/io_out/hub.d
@@ -52,6 +52,7 @@
   check & generate output types requested
 +/
 module doc_reform.io_out.hub;
+@safe:
 template outputHub() {
   import doc_reform.io_out,
     doc_reform.io_out.metadata,
diff --git a/src/doc_reform/io_out/latex.d b/src/doc_reform/io_out/latex.d
index a47e81c..8c792ff 100644
--- a/src/doc_reform/io_out/latex.d
+++ b/src/doc_reform/io_out/latex.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.latex;
+@safe:
 template paperLaTeX() {
   import
     std.format,
@@ -58,7 +59,7 @@ template paperLaTeX() {
       return _mm;
     }
     struct PaperType {
-      @safe auto a4() {
+      auto a4() {
         struct A4 {
           auto portrait() {
             struct V {
@@ -109,7 +110,7 @@ template paperLaTeX() {
         }
         return A4();
       }
-      @safe auto a5() {
+      auto a5() {
         struct A5 {
           auto portrait() {
             struct V {
@@ -160,7 +161,7 @@ template paperLaTeX() {
         }
         return A5();
       }
-      @safe auto b4() {
+      auto b4() {
         struct B4 {
           auto portrait() {
             struct V {
@@ -211,7 +212,7 @@ template paperLaTeX() {
         }
         return B4();
       }
-      @safe auto letter() {
+      auto letter() {
         struct Letter {
           auto portrait() {
             struct V {
@@ -262,7 +263,7 @@ template paperLaTeX() {
         }
         return Letter();
       }
-      @safe auto legal() {
+      auto legal() {
         struct Legal {
           auto portrait() {
             struct V {
@@ -335,7 +336,7 @@ template outputLaTeX() {
   mixin spineLanguageCodes;
   auto lang = Lang();
   auto paper = paperLaTeX;
-  @safe string sp_char_ops()(
+  string sp_char_ops()(
     string      _txt,
   ) {
     string _unescape_sp_char_esc()(string _txt) {
@@ -359,7 +360,7 @@ template outputLaTeX() {
     _txt = replaceAll!(m => _unescape_fontface_esc(m[0]))(_txt, rgx_sc.latex_identify_inline_fontface);
     return _txt;
   }
-  @safe string sp_char_esc(O)(
+  string sp_char_esc(O)(
     string      _txt,
     const    O  obj,
   ) {
@@ -368,20 +369,20 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string sp_char_esc_txt()(
+  string sp_char_esc_txt()(
     string      _txt,
   ) {
     _txt = _txt.sp_char_ops;
     return _txt;
   }
-  @safe string marked_linebreaks_newlines()(
+  string marked_linebreaks_newlines()(
     string      _txt,
   ) {
     _txt = _txt.split(rgx.br_linebreaks_newlines).join("\\br\n").strip;
     // _txt = replaceAll!(m => "\\br " ~ m[1])(_txt, rgx.br_linebreaks_newlines);
     return _txt;
   }
-  @safe string fontface()(
+  string fontface()(
     string      _txt,
   ) {
   _txt = _txt
@@ -397,7 +398,7 @@ template outputLaTeX() {
     .replaceAll(rgx.inline_italics,     format(q"┃``%s''┃",                           "$1"));
     return _txt;
   }
-  @safe string leading_hardspaces()(
+  string leading_hardspaces()(
     string      _txt,
   ) {
     string hardspaces(string _spaces) {
@@ -408,7 +409,7 @@ template outputLaTeX() {
     _txt = replaceAll!(m => hardspaces(m[0]))(_txt, rgx.spaces_line_start);
     return _txt;
   }
-  @safe string nbsp_char()(string _txt) {
+  string nbsp_char()(string _txt) {
     if (_txt.match(rgx.nbsp_char)) {
       foreach (m; _txt.matchAll(rgx.nbsp_chars)) {
         int spaces_ = 0;
@@ -420,7 +421,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string spaces_to_nbsp()(string _txt) {
+  string spaces_to_nbsp()(string _txt) {
     if (_txt.match(rgx.spaces_keep)) {
       foreach (m; _txt.matchAll(rgx.spaces_keep)) {
         int spaces_ = 0;
@@ -432,13 +433,13 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string nbsp_char_to_space()(string _txt) {
+  string nbsp_char_to_space()(string _txt) {
     if (_txt.match(rgx.nbsp_char)) {
       _txt  = _txt.replaceAll(rgx.nbsp_char, " ");
     }
     return _txt;
   }
-  @safe string links_and_images(O,M)(
+  string links_and_images(O,M)(
     string      _txt,
     const    O  obj,
              M  doc_matters,
@@ -485,7 +486,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string footnotes()(
+  string footnotes()(
     string      _txt,
   ) {
     if (_txt.match(rgx.inline_notes_al_gen)) {
@@ -500,7 +501,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string remove_footnotes()(
+  string remove_footnotes()(
     string      _txt,
   ) {
     if (_txt.match(rgx.inline_notes_al_gen)) {
@@ -508,7 +509,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string para(O)(
+  string para(O)(
     string      _txt,
     O           obj,
   ) {
@@ -522,7 +523,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string bookindex(O)(
+  string bookindex(O)(
     string      _txt,
     O           obj,
   ) {
@@ -537,7 +538,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string heading(O,M)(
+  string heading(O,M)(
     string      _txt,
     O           obj,
     M           doc_matters,
@@ -932,7 +933,7 @@ template outputLaTeX() {
     }
     return _txt;
   }
-  @safe string bullets_and_indentation(O)(
+  string bullets_and_indentation(O)(
     string      _txt,
     O           obj,
   ) {
diff --git a/src/doc_reform/io_out/metadata.d b/src/doc_reform/io_out/metadata.d
index 029bd28..94bb9a9 100644
--- a/src/doc_reform/io_out/metadata.d
+++ b/src/doc_reform/io_out/metadata.d
@@ -48,9 +48,10 @@
 
 +/
 module doc_reform.io_out.metadata;
+@safe:
 template outputMetadata() {
-  @safe void outputMetadata(T)( T  doc_matters) {
-    @safe string inline_search_form(M)(
+  void outputMetadata(T)( T  doc_matters) {
+    string inline_search_form(M)(
       M  doc_matters,
     ) {
       string o;
@@ -363,7 +364,7 @@ string theme_light_1 = format(q"┃
   doc_matters.opt.action.css_theme_default ? theme_light_0 : theme_dark_0,
   doc_matters.opt.action.css_theme_default ? theme_light_1 : theme_dark_1,
 ) ~ "\n";
-    @safe void metadata_write_output(M)(M doc_matters, string[] metadata_) {
+    void metadata_write_output(M)(M doc_matters, string[] metadata_) {
       auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
       try {
         if (!exists(pth_html.base)) {
diff --git a/src/doc_reform/io_out/odt.d b/src/doc_reform/io_out/odt.d
index 15e7e8e..c17158a 100644
--- a/src/doc_reform/io_out/odt.d
+++ b/src/doc_reform/io_out/odt.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.odt;
+@safe:
 template formatODT() {
   import
     doc_reform.io_out,
@@ -69,7 +70,7 @@ template formatODT() {
   struct formatODT {
     static auto rgx = RgxO();
     static auto rgx_xhtml = RgxXHTML();
-    @safe string _tags(O)(const O obj) {
+    string _tags(O)(const O obj) {
       string _tags = "";
       if (obj.tags.anchor_tags.length > 0) {
         foreach (tag_; obj.tags.anchor_tags) {
@@ -87,7 +88,7 @@ template formatODT() {
       }
       return _tags;
     }
-    @safe string _xhtml_anchor_tags(O)(O obj) {
+    string _xhtml_anchor_tags(O)(O obj) {
       const(string[]) anchor_tags = obj.tags.anchor_tags;
       string tags="";
       if (anchor_tags.length > 0) {
@@ -99,7 +100,7 @@ template formatODT() {
       }
       return tags;
     }
-    @safe string obj_num(O)(const O obj) { // TODO
+    string obj_num(O)(const O obj) { // TODO
       string _on;
       _on = (obj.metainfo.object_number.empty)
       ? ""
@@ -109,7 +110,7 @@ template formatODT() {
         ));
       return _on;
     }
-    @safe string _footnotes()(string _txt) {
+    string _footnotes()(string _txt) {
       static auto rgx = RgxO();
       static auto rgx_xhtml = RgxXHTML();
       _txt = _txt.replaceAll(
@@ -129,14 +130,14 @@ template formatODT() {
       );
       return _txt;
     }
-    @safe string _bullet(O)(const O obj) {
+    string _bullet(O)(const O obj) {
       string _b = "";
       if (obj.attrib.bullet) {
         _b = format(q"┃● ┃",);
       }
       return _b;
     }
-    @safe string _indent(O)(string _txt, const O obj) { // TODO
+    string _indent(O)(string _txt, const O obj) { // TODO
       // if (obj.attrib.indent_base > 0 ||
       //   obj.attrib.indent_hang > 0
       // ) {
@@ -244,7 +245,7 @@ template formatODT() {
       }
       return _txt;
     }
-    @safe string _block_type_delimiters(O)(string[] _block_lines, const O obj) { // TODO
+    string _block_type_delimiters(O)(string[] _block_lines, const O obj) { // TODO
       string _block = "";
       foreach (i, _line; _block_lines) {
         _line = _footnotes(_line);
@@ -277,7 +278,7 @@ template formatODT() {
         obj_num(obj));
       return _block;
     }
-    @safe string _special_characters(O)(string _txt, const O obj) {
+    string _special_characters(O)(string _txt, const O obj) {
       _txt = _txt
         .replaceAll(rgx_xhtml.ampersand,    "&amp;")
         .replaceAll(rgx_xhtml.quotation,    "&#34;")
@@ -286,7 +287,7 @@ template formatODT() {
         .replaceAll(rgx.nbsp_char,          "&#160;");
       return _txt;
     }
-    @safe string _preserve_white_spaces(O)(string _txt, const O obj) {
+    string _preserve_white_spaces(O)(string _txt, const O obj) {
       if (obj.metainfo.is_a == "code" || obj.metainfo.is_a == "verse" || obj.metainfo.is_a == "block") {
         _txt = _txt
           .replaceAll(rgx.space,      "&#160;");
@@ -307,9 +308,9 @@ template formatODT() {
         .replaceAll(rgx.inline_mono,        format(q"┃<text:span text:style-name="Span_monospace">%s</text:span>┃",  "$1"));
       return _txt;
     }
-    @safe auto _obj_num(O)(O obj) { // NOT USED YET
+    auto _obj_num(O)(O obj) { // NOT USED YET
       struct objNum {
-        @safe string reference() {
+        string reference() {
           return format(q"┃<text:span text:style-name="Span_subscript">
         <text:bookmark-start text:name="%s"/>
         <text:bookmark-end text:name="%s"/>
@@ -318,7 +319,7 @@ template formatODT() {
             obj.object_number,
           );
         }
-        @safe string display() {
+        string display() {
           return format(q"┃<text:span text:style-name="Span_subscript">
       %s%s%s
       </text:span>┃",
@@ -330,20 +331,20 @@ template formatODT() {
       }
       return objNum();
     }
-    @safe string _break_page()() {
+    string _break_page()() {
       return format(q"┃
     <text:p text:style-name="P_normal_page_new"/>
     ┃",
       );
     }
-    @safe string _empty_line_break(O)(string _txt, const O obj) {
+    string _empty_line_break(O)(string _txt, const O obj) {
       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;
     }
-    @safe string _links(O)(string _txt, const O obj) {
+    string _links(O)(string _txt, const O obj) {
       if (obj.metainfo.is_a != "code") {
         if (obj.metainfo.is_a == "toc") {
           _txt = replaceAll!(m =>
@@ -383,7 +384,7 @@ template formatODT() {
       }
       return _txt;
     }
-    @safe string _images(O)(string _txt, const O obj) {
+    string _images(O)(string _txt, const O obj) {
       if (_txt.match(rgx.inline_image)) {
         _txt = _txt
           .replaceAll(rgx.inline_image,
@@ -394,7 +395,7 @@ template formatODT() {
       }
       return _txt;
     }
-    @safe string markup(O)(const O obj) {
+    string markup(O)(const O obj) {
       /+ markup TODO +/
       string _txt = obj.text;
       _txt = _special_characters(_txt, obj);     // TODO & why both obj & obj.text, consider also in output_xmls.org
@@ -408,7 +409,7 @@ template formatODT() {
       _txt = _empty_line_break(_txt, obj);       // (obj.metainfo.is_a == "code" || obj.metainfo.is_a == "verse" || obj.metainfo.is_a == "block")
       return _txt;
     }
-    @safe string heading(O,M)(
+    string heading(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -452,7 +453,7 @@ template formatODT() {
       }
       return _o_txt_odt;
     }
-    @safe string para(O,M)(
+    string para(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -471,7 +472,7 @@ template formatODT() {
       }
       return _o_txt_odt;
     }
-    @safe string quote(O,M)(
+    string quote(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -483,7 +484,7 @@ template formatODT() {
       _o_txt_odt = _footnotes(_o_txt_odt); // decide
       return _o_txt_odt;
     }
-    @safe string group(O,M)(
+    string group(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -501,7 +502,7 @@ template formatODT() {
       _o_txt_odt = _block_type_delimiters(_block_lines, obj);
       return _o_txt_odt;
     }
-    @safe string block(O,M)(
+    string block(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -514,7 +515,7 @@ template formatODT() {
       _o_txt_odt = _block_type_delimiters(_block_lines, obj);
       return _o_txt_odt;
     }
-    @safe string verse(O,M)(
+    string verse(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -527,7 +528,7 @@ template formatODT() {
       _o_txt_odt = _block_type_delimiters(_block_lines, obj);
       return _o_txt_odt;
     }
-    @safe string code(O,M)(
+    string code(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -574,7 +575,7 @@ template formatODT() {
       _o_txt_odt = _block;
       return _o_txt_odt;
     }
-    @safe Tuple!(string, string) tablarize(O)(
+    Tuple!(string, string) tablarize(O)(
       const        O    obj,
       string            _txt,
     ) {
@@ -609,7 +610,7 @@ template formatODT() {
       return t;
     }
     int _table_number = 0;
-    @safe string table(O,M)(
+    string table(O,M)(
       const        O  obj,
       const        M  doc_matters,
     ) {
@@ -666,7 +667,7 @@ template outputODT() {
   static auto rgx = RgxO();
   static auto rgx_xhtml = RgxXHTML();
   // mixin outputXmlODT;
-  @safe string odt_head(I)(I doc_matters) {
+  string odt_head(I)(I doc_matters) {
     string _has_tables = format(q"┃
     <style:style style:name="Table1" style:family="table">
       <style:table-properties style:width="16.999cm" table:align="margins"/>
@@ -774,7 +775,7 @@ template outputODT() {
   );
     return _odt_head;
   }
-  @safe string odt_body(D,I)(
+  string odt_body(D,I)(
     const D    doc_abstraction,
           I    doc_matters,
   ) {
@@ -900,12 +901,12 @@ template outputODT() {
     return doc_odt;
   }
   
-  @safe string odt_tail() {
+  string odt_tail() {
     string _odt_tail = format(q"┃<text:p text:style-name="P_normal">spine: &lt;<text:a xl:type="simple" xl:href="https://www.doc_reform.org">www.doc_reform.org</text:a>&gt; and &lt;<text:a xl:type="simple" xl:href="https://www.sisudoc.org">www.sisudoc.org</text:a>&gt;</text:p>
   </office:text></office:body></office:document-content>┃",);
     return _odt_tail;
   }
-  @safe string content_xml(D,I)(
+  string content_xml(D,I)(
     const D    doc_abstraction,
           I    doc_matters,
   ) {
@@ -918,7 +919,7 @@ template outputODT() {
     _content_xml ~= odt_tail;
     return _content_xml;
   }
-  @safe string manifest_xml(M)(
+  string manifest_xml(M)(
     auto ref              M    doc_matters,
   ) {
     string _bullet = format(q"┃<manifest:file-entry manifest:media-type="" manifest:full-path="Pictures/bullet_09.png"/>┃");
@@ -942,7 +943,7 @@ template outputODT() {
   );
     return _manifest_xml;
   }
-  @safe void images_cp(M)(
+  void images_cp(M)(
     auto ref              M    doc_matters,
   ) {
     { /+ (copy odt images) +/
@@ -963,7 +964,7 @@ template outputODT() {
     }
     // return 0;
   }
-  @safe string meta_xml(M)(
+  string meta_xml(M)(
     auto ref              M    doc_matters,
   ) {
     /+ (meta_xml includes output time-stamp) +/
@@ -1011,11 +1012,11 @@ template outputODT() {
     }
     // return 0;
   }
-  @safe string mimetype() {
+  string mimetype() {
     string mimetype_ = format(q"┃application/vnd.oasis.opendocument.text┃");
     return mimetype_;
   }
-  @safe string manifest_rdf() {
+  string manifest_rdf() {
     string _manifest_rdf = format(q"┃<?xml version="1.0" encoding="utf-8"?>
   <rdf:RDF xmlns:rdf="https://www.w3.org/1999/02/22-rdf-syntax-ns#">
     <rdf:Description rdf:about="styles.xml">
@@ -1037,7 +1038,7 @@ template outputODT() {
   ┃");
     return _manifest_rdf;
   }
-  @safe string settings_xml() {
+  string settings_xml() {
     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="https://www.w3.org/1999/xlink" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooo="https://openoffice.org/2004/office" office:version="1.2">
     <office:settings>
@@ -1137,7 +1138,7 @@ template outputODT() {
   ┃");
     return _settings_xml;
   }
-  @safe string styles_xml() {
+  string styles_xml() {
     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="https://www.w3.org/1999/xlink" xmlns:dc="https://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="https://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="https://openoffice.org/2004/office" xmlns:ooow="https://openoffice.org/2004/writer" xmlns:oooc="https://openoffice.org/2004/calc" xmlns:dom="https://www.w3.org/2001/xml-events" xmlns:rpt="https://openoffice.org/2005/report" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:xhtml="https://www.w3.org/1999/xhtml" xmlns:grddl="https://www.w3.org/2003/g/data-view#" xmlns:tableooo="https://openoffice.org/2009/table" xmlns:css3t="https://www.w3.org/TR/css3-text/" office:version="1.2">
     <office:font-face-decls>
@@ -2033,7 +2034,7 @@ template outputODT() {
   ┃");
     return _styles_xml;
   }
-  void writeOutputODT(W,I)(
+  @trusted void writeOutputODT(W,I)(
     const W    odt_content,
           I    doc_matters,
   ) {
@@ -2092,7 +2093,7 @@ template outputODT() {
                 auto zip_arc_member_file = new ArchiveMember();
                 zip_arc_member_file.name = fn_out;
                 auto zip_data = new OutBuffer();
-                zip_data.write(cast(char[]) ((fn_src).read));
+                zip_data.write(cast(char[]) ((fn_src).read)); // trusted?
                 zip_arc_member_file.expandedData = zip_data.toBytes();
                 zip.addMember(zip_arc_member_file);
                 createZipFile!()(fn_odt, zip.build());
diff --git a/src/doc_reform/io_out/paths_output.d b/src/doc_reform/io_out/paths_output.d
index b11dbdb..a317896 100644
--- a/src/doc_reform/io_out/paths_output.d
+++ b/src/doc_reform/io_out/paths_output.d
@@ -51,6 +51,7 @@
   default settings
 +/
 module doc_reform.io_out.paths_output;
+@safe:
 import
   std.array,
   std.path,
diff --git a/src/doc_reform/io_out/rgx.d b/src/doc_reform/io_out/rgx.d
index 524415a..212581f 100644
--- a/src/doc_reform/io_out/rgx.d
+++ b/src/doc_reform/io_out/rgx.d
@@ -51,6 +51,7 @@
   regex: regular expressions used in sisu document parser
 +/
 module doc_reform.io_out.rgx;
+@safe:
 static template spineRgxOut() {
   static struct RgxO {
     static make_breakpage                           = ctRegex!(`new=(?P<breakpage>.+?)(?:;|$)`);
diff --git a/src/doc_reform/io_out/rgx_latex.d b/src/doc_reform/io_out/rgx_latex.d
index a69c903..2d43dc3 100644
--- a/src/doc_reform/io_out/rgx_latex.d
+++ b/src/doc_reform/io_out/rgx_latex.d
@@ -51,6 +51,7 @@
   regex: regular expressions used in sisu document parser
 +/
 module doc_reform.io_out.rgx_latex;
+@safe:
 static template spineRgxLSC() {
   static struct RgxLSC {
     static latex_special_char                       = ctRegex!(`([%${}_#&\\])`);
diff --git a/src/doc_reform/io_out/rgx_xhtml.d b/src/doc_reform/io_out/rgx_xhtml.d
index 831bfdc..0bf8bb1 100644
--- a/src/doc_reform/io_out/rgx_xhtml.d
+++ b/src/doc_reform/io_out/rgx_xhtml.d
@@ -51,6 +51,7 @@
   regex: regular expressions used in sisu document parser
 +/
 module doc_reform.io_out.rgx_xhtml;
+@safe:
 static template spineRgxXHTML() {
   static struct RgxXHTML {
     static ampersand                                = ctRegex!(`[&]`, "m");      // &amp;
diff --git a/src/doc_reform/io_out/source_pod.d b/src/doc_reform/io_out/source_pod.d
index 7441f6b..3920d08 100644
--- a/src/doc_reform/io_out/source_pod.d
+++ b/src/doc_reform/io_out/source_pod.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.source_pod;
+@system: // is not @safe: use: @system: or @trusted:
 template spinePod() {
   import
     doc_reform.meta.rgx_files,
diff --git a/src/doc_reform/io_out/xmls.d b/src/doc_reform/io_out/xmls.d
index 5a8730e..ca7b9ea 100644
--- a/src/doc_reform/io_out/xmls.d
+++ b/src/doc_reform/io_out/xmls.d
@@ -48,6 +48,7 @@
 
 +/
 module doc_reform.io_out.xmls;
+@safe:
 template outputXHTMLs() {
   import
     std.file,
@@ -67,7 +68,7 @@ template outputXHTMLs() {
   struct outputXHTMLs {
     static auto rgx = RgxO();
     static auto rgx_xhtml = RgxXHTML();
-    @safe string div_delimit(
+    string div_delimit(
                  string  section,
       return ref string  previous_section
     ) {
@@ -97,7 +98,7 @@ template outputXHTMLs() {
       // you also need to close the last div, introduce a footer?
       return delimit;
     }
-    @safe string special_characters_text(string _txt) {
+    string special_characters_text(string _txt) {
       _txt = _txt
         .replaceAll(rgx_xhtml.ampersand,    "&amp;")  // "&#38;"
         .replaceAll(rgx_xhtml.quotation,    "&quot;") // "&#34;"
@@ -109,7 +110,7 @@ template outputXHTMLs() {
         .replaceAll(rgx.nbsp_char,          " ");
       return _txt;
     }
-    @safe string special_characters_date(string _txt) {
+    string special_characters_date(string _txt) {
       _txt = _txt
         .replaceAll(regex(r"(?:-00)+"),     "")
         .replaceAll(rgx.br_line,            "<br />")
@@ -118,7 +119,7 @@ template outputXHTMLs() {
         .replaceAll(rgx.nbsp_char,          " ");
       return _txt;
     }
-    @safe string special_characters_breaks_indents_bullets(O)(
+    string special_characters_breaks_indents_bullets(O)(
       const  O         obj,
     ) {
       string _txt = special_characters_text(obj.text);
@@ -169,7 +170,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    @safe string font_face(string _txt) {
+    string font_face(string _txt) {
       _txt = _txt
         .replaceAll(rgx.inline_emphasis,    ("<em>$1</em>"))
         .replaceAll(rgx.inline_bold,        ("<b>$1</b>"))
@@ -183,7 +184,7 @@ template outputXHTMLs() {
         .replaceAll(rgx.inline_cite,        ("<cite>$1</cite>"));
       return _txt;
     }
-    @safe string _xhtml_anchor_tags(O)(O obj) {
+    string _xhtml_anchor_tags(O)(O obj) {
       string tags="";
       if (obj.tags.anchor_tags.length > 0) {
         foreach (tag; obj.tags.anchor_tags) {
@@ -194,7 +195,7 @@ template outputXHTMLs() {
       }
       return tags;
     }
-    @safe string header_metadata(M)(
+    string header_metadata(M)(
       M  doc_matters,
     ) {
       string _publisher="Publisher"; // TODO
@@ -231,7 +232,7 @@ template outputXHTMLs() {
       );
       return o;
     }
-    @safe string site_info_button(M)(
+    string site_info_button(M)(
       M  doc_matters,
     ) {
       string _locations;
@@ -255,7 +256,7 @@ template outputXHTMLs() {
       );
       return o;
     }
-    @safe string inline_search_form(M)(
+    string inline_search_form(M)(
       M  doc_matters,
     ) {
       string o;
@@ -314,7 +315,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string html_head(M)(
+    string html_head(M)(
       M  doc_matters,
       string type,
     ) {
@@ -396,7 +397,7 @@ template outputXHTMLs() {
       );
       return o;
     }
-    @safe string epub3_seg_head(M)(
+    string epub3_seg_head(M)(
       M  doc_matters,
     ) {
       string html_base = format(q"┃<!DOCTYPE html>
@@ -464,12 +465,12 @@ template outputXHTMLs() {
       );
       return o;
     }
-@safe string dom_close() {
+string dom_close() {
   string o;
   o = format(q"┃</div>┃");
   return o;
 }
-@safe string tail(M)(M doc_matters) {
+string tail(M)(M doc_matters) {
   string o;
   o = format(q"┃<hr />
   <div class="rights">
@@ -504,7 +505,7 @@ template outputXHTMLs() {
   );
   return o;
 }
-    @safe string inline_images(O,M)(
+    string inline_images(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -530,7 +531,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    @safe string inline_links(O,M)(
+    string inline_links(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -621,7 +622,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    @safe string inline_notes_scroll(O,M)(
+    string inline_notes_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -652,7 +653,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    @safe Tuple!(string, string[]) inline_notes_seg(O,M)(
+    Tuple!(string, string[]) inline_notes_seg(O,M)(
                 string  _txt,
       const     O       obj,
                 M       doc_matters,
@@ -716,7 +717,7 @@ template outputXHTMLs() {
       );
       return t;
     }
-    @safe string inline_markup_scroll(O,M)(
+    string inline_markup_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -732,7 +733,7 @@ template outputXHTMLs() {
       }
       return _txt;
     }
-    @safe Tuple!(string, string[]) inline_markup_seg(O,M)(
+    Tuple!(string, string[]) inline_markup_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -752,7 +753,7 @@ template outputXHTMLs() {
       Tuple!(string, string[]) t = inline_notes_seg(_txt, obj, doc_matters);
       return t;
     }
-    @safe string lev4_heading_subtoc(O,M)(
+    string lev4_heading_subtoc(O,M)(
       const        O  obj,
                    M  doc_matters,
     ) {
@@ -779,7 +780,7 @@ template outputXHTMLs() {
       lev4_subtoc ~= "  </div>\n";
       return lev4_subtoc.to!string;
     }
-    @safe auto nav_pre_next_svg(O,M)(
+    auto nav_pre_next_svg(O,M)(
       const        O  obj,
                    M  doc_matters,
     ) {
@@ -849,7 +850,7 @@ template outputXHTMLs() {
       }
       return bar();
     }
-    @safe string heading(O,M)(
+    string heading(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -937,7 +938,7 @@ template outputXHTMLs() {
         }
       return o;
     }
-    @safe string heading_scroll(O,M)(
+    string heading_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -947,7 +948,7 @@ template outputXHTMLs() {
       string o = heading(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) heading_seg(O,M)(
+    Tuple!(string, string[]) heading_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -964,7 +965,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe string para(O,M)(
+    string para(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1014,7 +1015,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string para_scroll(O,M)(
+    string para_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1027,7 +1028,7 @@ template outputXHTMLs() {
       string o = para(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) para_seg(O,M)(
+    Tuple!(string, string[]) para_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1044,7 +1045,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe string quote(O,M)(
+    string quote(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1080,7 +1081,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string quote_scroll(O,M)(
+    string quote_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1090,7 +1091,7 @@ template outputXHTMLs() {
       string o = quote(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) quote_seg(O,M)(
+    Tuple!(string, string[]) quote_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1107,7 +1108,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe string group(O,M)(
+    string group(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1145,7 +1146,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string group_scroll(O,M)(
+    string group_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1156,7 +1157,7 @@ template outputXHTMLs() {
       string o = group(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) group_seg(O,M)(
+    Tuple!(string, string[]) group_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1173,7 +1174,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe string block(O,M)(
+    string block(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1207,7 +1208,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string block_scroll(O,M)(
+    string block_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1218,7 +1219,7 @@ template outputXHTMLs() {
       string o = block(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) block_seg(O,M)(
+    Tuple!(string, string[]) block_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1235,7 +1236,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe string verse(O,M)(
+    string verse(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1267,7 +1268,7 @@ template outputXHTMLs() {
       }
       return o;
     }
-    @safe string verse_scroll(O,M)(
+    string verse_scroll(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1278,7 +1279,7 @@ template outputXHTMLs() {
       string o = verse(_txt, obj, doc_matters);
       return o;
     }
-    @safe Tuple!(string, string[]) verse_seg(O,M)(
+    Tuple!(string, string[]) verse_seg(O,M)(
       string          _txt,
       const        O  obj,
                    M  doc_matters,
@@ -1295,7 +1296,7 @@ template outputXHTMLs() {
       );
       return u;
     }
-    @safe Tuple!(string, string) tablarize(O)(
+    Tuple!(string, string) tablarize(O)(
       string            _txt,
       const        O    obj,
     ) {
@@ -1328,7 +1329,7 @@ template outputXHTMLs() {
       );
       return t;
     }
-    @safe string table(O,M)(
+    string table(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
@@ -1362,7 +1363,7 @@ template outputXHTMLs() {
       );
       return o;
     }
-    @safe string code(O,M)(
+    string code(O,M)(
             string _txt,
       const O      obj,
             M      doc_matters,
diff --git a/src/doc_reform/io_out/xmls_css.d b/src/doc_reform/io_out/xmls_css.d
index 831a26d..712d79a 100644
--- a/src/doc_reform/io_out/xmls_css.d
+++ b/src/doc_reform/io_out/xmls_css.d
@@ -51,9 +51,10 @@
   default css settings
 +/
 module doc_reform.io_out.xmls_css;
+@safe:
 template spineCss() {
   import std.format;
-  @safe auto spineCss(M)(M doc_matters) {
+  auto spineCss(M)(M doc_matters) {
   string _css_indent = format(q"┃
 /* indent */
 p.norm { }
@@ -4427,7 +4428,7 @@ p.form {
     _css_indent,
     _color_ocn_dark,
 );
-    @safe auto css_() {
+    auto css_() {
       struct _CSS {
         string html_seg    = "/* spine css html seg stylesheet */\n";
         string html_scroll = "/* spine css html scroll stylesheet */\n";