dlang safe default imminent, look ahead

- @safe @trusted & @system, reconsider @trusted

12 files changed, 178 insertions, 178 deletions

diff --git a/src/doc_reform/meta/conf_make_meta_json.d b/src/doc_reform/meta/conf_make_meta_json.d
index 4f33108..4fc3bc4 100644
--- a/src/doc_reform/meta/conf_make_meta_json.d
+++ b/src/doc_reform/meta/conf_make_meta_json.d
@@ -20,7 +20,7 @@ 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) @safe {
+  @safe auto contentJSONtoSpineStruct(C,J,M)(C _struct_composite, J _json, M _manifested, string _identifier) {
     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 121605a..683d355 100644
--- a/src/doc_reform/meta/conf_make_meta_structs.d
+++ b/src/doc_reform/meta/conf_make_meta_structs.d
@@ -16,7 +16,7 @@ mixin spineRgxInit;
 static auto rgx = Rgx();
 mixin InternalMarkup;
 static auto mkup = InlineMarkup();
-string url_markup(string line) @safe {
+@safe string url_markup(string line) {
   string line_ = line
     .replaceAll(
       rgx.smid_inline_link_markup_regular,
diff --git a/src/doc_reform/meta/conf_make_meta_yaml.d b/src/doc_reform/meta/conf_make_meta_yaml.d
index 69ec567..e55a24f 100644
--- a/src/doc_reform/meta/conf_make_meta_yaml.d
+++ b/src/doc_reform/meta/conf_make_meta_yaml.d
@@ -20,7 +20,7 @@ static template contentYAMLtoSpineStruct() {
     doc_reform.meta.defaults,
     doc_reform.meta.rgx;
   ConfComposite _struct_composite;
-  auto contentYAMLtoSpineStruct(C,Y,M)(
+  @system auto contentYAMLtoSpineStruct(C,Y,M)(
     C _struct_composite,
     Y _yaml,
     M _manifested,
@@ -794,7 +794,7 @@ static template configParseYAMLreturnSpineStruct() {
     doc_reform.meta.conf_make_meta_structs,
     doc_reform.meta.conf_make_meta_json;
   mixin contentYAMLtoSpineStruct;
-  auto configParseYAMLreturnSpineStruct(T,CCm,M)(
+  @system auto configParseYAMLreturnSpineStruct(T,CCm,M)(
     T       _document_struct,
     CCm     _make_and_meta_struct,
     M       _manifested
@@ -832,7 +832,7 @@ static template docHeaderMakeAndMetaTupYamlExtractAndConvertToStruct() {
   mixin spineRgxInit;
   mixin contentJSONtoSpineStruct;
   static auto rgx = Rgx();
-  auto docHeaderMakeAndMetaTupYamlExtractAndConvertToStruct(CCm,Src,M)(
+  @system auto docHeaderMakeAndMetaTupYamlExtractAndConvertToStruct(CCm,Src,M)(
     Src     header_src,
     CCm     _make_and_meta_struct,
     M       _manifested,
diff --git a/src/doc_reform/meta/defaults.d b/src/doc_reform/meta/defaults.d
index 0b6388b..eff632e 100644
--- a/src/doc_reform/meta/defaults.d
+++ b/src/doc_reform/meta/defaults.d
@@ -4,7 +4,7 @@
 module doc_reform.meta.defaults;
 template spineRgxInitFlags() {
   /+ regex flags +/
-  static int[string] flags_type_init() {
+  @safe static int[string] flags_type_init() {
     int[string] flags_type_init = [
       "make_headings"                       : 0,
       "header_make"                         : 0,
@@ -45,7 +45,7 @@ template spineRgxInitFlags() {
   }
 }
 template spineNode() {
-  static string[string] node_metadata_heading_str() {
+  @safe static string[string] node_metadata_heading_str() {
     string[string] _node = [
         "is"                            : "",
         "ocn"                           : "",
@@ -56,7 +56,7 @@ template spineNode() {
     ];
     return _node;
   }
-  static int[string] node_metadata_heading_int() {
+  @safe static int[string] node_metadata_heading_int() {
     int[string] _node = [
         "ocn"                           : 0, // decide whether to use or keep?
         "ptr_doc_object"                : 0,
@@ -69,7 +69,7 @@ template spineNode() {
     ];
     return _node;
   }
-  static string[string] node_metadata_para_str() {
+  @safe static string[string] node_metadata_para_str() {
     string[string] _node = [
         "is"                            : "",
         "ocn"                           : "",
@@ -77,7 +77,7 @@ template spineNode() {
     ];
     return _node;
   }
-  static int[string] node_metadata_para_int() {
+  @safe static int[string] node_metadata_para_int() {
     int[string] _node = [
         "ocn"                           : 0,
         "indent_base"                   : 0,
@@ -88,7 +88,7 @@ template spineNode() {
   }
 }
 template spineHarvest() {
-  auto spineHarvest() {
+  @safe auto spineHarvest() {
     struct _Harvest {
       struct Harvest {
         string   title                = "";
@@ -122,7 +122,7 @@ template spineHarvest() {
 template spineBiblio() {
   // required: deemed_author (author || editor); year; fulltitle;
   struct BibJsnStr {
-    static auto biblio_entry_tags_jsonstr() {
+    @safe static auto biblio_entry_tags_jsonstr() {
       string x =  `{
         "is"                               : "",
         "sortby_deemed_author_year_title"  : "",
@@ -203,7 +203,7 @@ template InternalMarkup() {
 template spineLanguageCodes() {
   /+ language codes +/
   struct Lang {
-    static string[string][string] codes() {
+    @safe 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"    ],
@@ -270,15 +270,15 @@ template spineLanguageCodes() {
       ];
       return _lang_codes;
     }
-    static string[] code_arr_ptr() {
+    @safe 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;
     }
-    static string[] code_arr() {
+    @safe 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;
     }
-    static auto codes_() {
+    @safe static auto codes_() {
       return "(" ~ join(code_arr,"|") ~ ")";
     }
     static auto codes_regex() {
diff --git a/src/doc_reform/meta/metadoc.d b/src/doc_reform/meta/metadoc.d
index 03cb098..e18a19e 100644
--- a/src/doc_reform/meta/metadoc.d
+++ b/src/doc_reform/meta/metadoc.d
@@ -30,7 +30,7 @@ template spineAbstraction() {
   enum makeMeta { make, meta }
   enum docAbst  { doc_abstract_obj, doc_has }
   static auto rgx = Rgx();
-  auto spineAbstraction(E,P,O,M,S)(
+  @system auto spineAbstraction(E,P,O,M,S)(
     E _env,
     P program_info,
     O _opt_action,
@@ -108,39 +108,39 @@ template spineAbstraction() {
       writeln("step4 commence → (doc_matters)");
     }
     struct DocumentMatters {
-      auto generator_program() {
+      @safe auto generator_program() {
         struct Prog_ {
-          string project_name() {
+          @safe string project_name() {
             return "spine";
           }
-          string name() {
+          @safe string name() {
             return program_info.name;
           }
-          string ver() {
+          @safe string ver() {
             return program_info.ver;
           }
-          string name_and_version() @trusted {
+          @trusted string name_and_version() {
             return format("%s-%s",
               name,
               ver,
             );
           }
-          string url_home() {
+          @safe string url_home() {
             return "http://sisudoc.org";
           }
-          string url_git() {
+          @safe string url_git() {
             return "https://git.sisudoc.org/software/sisu";
           }
-          auto compiler() {
+          @safe auto compiler() {
             return program_info.compiler;
           }
-          auto stime() {
+          @safe auto stime() {
             return Clock.currTime(UTC()).toSimpleString();
           }
         }
         return Prog_();
       }
-      auto generated_time() {
+      @safe auto generated_time() {
         auto _st = Clock.currTime(UTC());
         auto _time = _st.year.to!string
           ~ "-" ~ _st.month.to!int.to!string // prefer as month number
@@ -151,26 +151,26 @@ template spineAbstraction() {
           ~ ":" ~ _st.second.to!string;
         return _time;
       }
-      auto conf_make_meta() {
+      @safe auto conf_make_meta() {
         return _make_and_meta_struct;
       }
-      auto has() {
+      @safe auto has() {
         return _doc_has_struct;
       }
-      auto env() {
+      @safe auto env() {
         struct Env_ {
-          auto pwd() {
+          @safe auto pwd() {
             return _manifest.env.pwd;
           }
-          auto home() {
+          @safe auto home() {
             return _manifest.env.home;
           }
         }
         return Env_();
       }
-      auto opt() {
+      @safe auto opt() {
         struct Opt_ {
-          auto action() {
+          @safe auto action() {
             /+ getopt options, commandline instructions, raw
              - processing instructions --epub --html etc.
              - command line config instructions --output-path
@@ -180,27 +180,27 @@ template spineAbstraction() {
         }
         return Opt_();
       }
-      auto src() {
+      @safe auto src() {
         return _manifest.src;
       }
-      auto src_path_info() {
+      @safe auto src_path_info() {
         return spinePathsSRC!()(_manifest.env.pwd, _manifest.src.file_with_absolute_path); // would like (to have and use) relative path
       }
-      auto pod() {
+      @safe auto pod() {
         return _manifest.pod;
       }
-      auto sqlite() {
+      @safe auto sqlite() {
         struct SQLite_ {
-          string filename() {
+          @safe string filename() {
             return _opt_action.sqlite_filename;
           }
         }
         return SQLite_();
       }
-      auto output_path() {
+      @safe auto output_path() {
         return _make_and_meta_struct.conf.output_path;
       }
-      auto srcs() {
+      @safe auto srcs() {
         struct SRC_ {
           auto file_insert_list() {
             return _header_body_insertfilelist_imagelist[headBody.insert_file_list];
diff --git a/src/doc_reform/meta/metadoc_from_src.d b/src/doc_reform/meta/metadoc_from_src.d
index 6dbbb22..3c58212 100644
--- a/src/doc_reform/meta/metadoc_from_src.d
+++ b/src/doc_reform/meta/metadoc_from_src.d
@@ -112,7 +112,7 @@ template docAbstraction() {
      bool,   "has_images_without_dimensions",
   );
   enum DomTags { none, open, close, close_and_open, open_still, }
-  pure ObjGenericComposite obj_heading_ancestors()(
+  @safe pure ObjGenericComposite obj_heading_ancestors()(
     ObjGenericComposite  obj,
     string[]             lv_ancestors_txt,
   ) {
@@ -165,7 +165,7 @@ template docAbstraction() {
     }
     return obj;
   }
-  pure ObjGenericComposite obj_dom_structure_set_markup_tags()(
+  @safe pure ObjGenericComposite obj_dom_structure_set_markup_tags()(
     ObjGenericComposite  obj,
     int[]                dom,
     int                  lev
@@ -209,7 +209,7 @@ template docAbstraction() {
     obj.metainfo.dom_structure_markedup_tags_status = dom.dup;
     return obj;
   }
-  pure ObjGenericComposite obj_dom_set_collapsed_tags()(
+  @safe pure ObjGenericComposite obj_dom_set_collapsed_tags()(
     ObjGenericComposite  obj,
     int[]                dom,
     int                  lev
@@ -253,10 +253,10 @@ template docAbstraction() {
     obj.metainfo.dom_structure_collapsed_tags_status = dom.dup;
     return obj;
   }
-  static auto ocn_emit(int ocn_status_flag) {
+  @safe static auto ocn_emit(int ocn_status_flag) {
     return object_citation_number.ocn_emitter(ocn_status_flag);
   }
-  static auto inline_markup_faces(L)(L line) {
+  @safe static auto inline_markup_faces(L)(L line) {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     line = replaceAll!(m => mkup.quote_o ~ m[1] ~ mkup.quote_c)(line, rgx.within_quotes);
@@ -267,7 +267,7 @@ template docAbstraction() {
     }
     return line;
   }
-  static string links_and_images()(string obj_txt) {
+  @safe static string links_and_images()(string obj_txt) {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     if (obj_txt.match(rgx.smid_inline_url_generic)) {
@@ -314,7 +314,7 @@ template docAbstraction() {
   ObjGenericComposite comp_obj_heading, comp_obj_location, comp_obj_block, comp_obj_code, comp_obj_poem_ocn, comp_obj_comment;
   auto node_construct = NodeStructureMetadata();
   enum sObj { content, anchor_tag, notes_reg, notes_star, links, image_no_dimensions }
-  string[string][string] inline_para_link_anchor()(
+  @safe string[string][string] inline_para_link_anchor()(
     string[string]          an_object,
     string[string]          tag_in_seg,
     string[string][string]  tag_assoc
@@ -331,7 +331,7 @@ template docAbstraction() {
     return tag_assoc;
   }
                                                                                 /+ ↓ abstract marked up document +/
-  auto docAbstraction(CMM,Opt,Mf) (
+  @system auto docAbstraction(CMM,Opt,Mf) (
     char[][]           markup_sourcefile_content,
     CMM                conf_make_meta,
     Opt                opt_action,
@@ -1487,7 +1487,7 @@ template docAbstraction() {
     }
     the_document_head_section ~= the_document_body_section[0];
     the_document_body_section=the_document_body_section[1..$];
-    int[] _get_ancestors_markup(O)(O obj, ref int[] _ancestors_markup) {
+    @safe int[] _get_ancestors_markup(O)(O obj, ref int[] _ancestors_markup) {
       if (obj.metainfo.is_a == "heading") {
         debug(dom) {
           writeln(obj.text);
@@ -1574,7 +1574,7 @@ template docAbstraction() {
       }
       return _ancestors_markup;
     }
-    int[] _get_ancestors_collapsed(O)(O obj, ref int[] _ancestors_collapsed) {
+    @safe int[] _get_ancestors_collapsed(O)(O obj, ref int[] _ancestors_collapsed) {
       if (obj.metainfo.is_a == "heading") {
         if (obj.metainfo.heading_lev_collapsed == 1) {
           _ancestors_collapsed = [
@@ -1755,7 +1755,7 @@ template docAbstraction() {
       }
       html_segnames_ptr_cntr++;
     }
-    auto get_decendants()(ObjGenericComposite[] document_sections) {
+    @safe auto get_decendants()(ObjGenericComposite[] document_sections) {
       int[string] _heading_ocn_decendants;
       string[] _ocn_open_key = ["","","","","","","",""];
       auto _doc_sect_length = document_sections.length - 1;
@@ -1803,7 +1803,7 @@ template docAbstraction() {
       return pairs.sort;
     }
     string[] _images;
-    string[] extract_images()(string content_block) {
+    @safe string[] extract_images()(string content_block) {
       string[] images_;
       if (auto m = content_block.matchAll(rgx.image)) {
         images_ ~= m.captures[1];
@@ -1811,7 +1811,7 @@ template docAbstraction() {
       return images_;
     }
     string[] segnames_0_to_4;
-    auto _image_dimensions(O,M)(O obj, M manifested) {
+    @system auto _image_dimensions(O,M)(O obj, M manifested) {
       if (obj.has.image_without_dimensions) {
         import std.math;
         import imageformats;
@@ -1852,7 +1852,7 @@ template docAbstraction() {
       }
       return obj;
     }
-    auto _links(O)(O obj) {
+    @safe auto _links(O)(O obj) {
       if (auto m = obj.text.match(rgx.inline_link_stow_uri)) {
         debug(links) {
           writeln("number of link matches to stow: ", (obj.text.match(rgx.inline_link_stow_uri)).count);
@@ -2358,7 +2358,7 @@ template docAbstraction() {
     dom_structure_collapsed_tags_status          = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
     dom_structure_collapsed_tags_status_buffer   = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
     
-    auto doc_has() {
+    @safe auto doc_has() {
       struct DocHas_ {
         uint inline_links() {
           return dochas["inline_links"];
@@ -2416,7 +2416,7 @@ template docAbstraction() {
                                                                                 /+ post loop markup document/text ↑ +/
   }                                                                             /+ ← closed: abstract doc source +/
                                                                                 /+ ↓ abstraction functions +/
-  static string[string] object_reset()(string[string] an_object) @safe {
+  @safe static string[string] object_reset()(string[string] an_object) {
     an_object.remove("body_nugget");
     an_object.remove("substantive");
     an_object.remove("is");
@@ -2424,7 +2424,7 @@ template docAbstraction() {
     an_object.remove("bookindex_nugget");
     return an_object;
   }
-  void flow_common_reset_()(
+  @system void flow_common_reset_()(
     return ref int[string]     line_occur,
     return ref string[string]  an_object,
     return ref int[string]     obj_type_status,
@@ -2435,10 +2435,10 @@ template docAbstraction() {
     obj_type_status["para"]    = State.off;
     an_object                  = an_object.object_reset;
   }
-  static int[string]         _check_ocn_status_()(
+  @safe 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)
@@ -2494,10 +2494,10 @@ template docAbstraction() {
     }
     return obj_type_status;
   }
-  char[] _doc_header_and_make_substitutions_(CMM)(
+  @safe 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) {
@@ -2509,10 +2509,10 @@ template docAbstraction() {
     }
     return line;
   }
-  char[] _doc_header_and_make_substitutions_fontface_(CMM)(
+  @safe 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(
@@ -2534,12 +2534,12 @@ template docAbstraction() {
     }
     return line;
   }
-  void flow_txt_block_start()(
+  @safe void flow_txt_block_start()(
                char[]         line,
     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"]++;
@@ -2720,11 +2720,11 @@ template docAbstraction() {
       obj_type_status["tic_table"] = TriState.on;
     }
   }
-  string[string] flow_txt_block_quote()(
+  @safe string[string] flow_txt_block_quote()(
                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)) {
@@ -2759,11 +2759,11 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string] flow_txt_block_group()(
+  @safe string[string] flow_txt_block_group()(
                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)) {
@@ -2798,11 +2798,11 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string] flow_txt_block_block()(
+  @safe string[string] flow_txt_block_block()(
                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)) {
@@ -2837,7 +2837,7 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string]  flow_txt_block_poem(CMM)(
+  @safe string[string]  flow_txt_block_poem(CMM)(
                char[]          line,
                string[string]  an_object,
     return ref int[string]     obj_type_status,
@@ -2845,7 +2845,7 @@ 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)) {
@@ -3079,11 +3079,11 @@ template docAbstraction() {
     }
     return an_object;
   }
-  void flow_txt_block_code()(
+  @safe void flow_txt_block_code()(
                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)) {
@@ -3121,7 +3121,7 @@ template docAbstraction() {
       }
     }
   }
-  string[string] flow_txt_block_table(CMM)(
+  @system string[string] flow_txt_block_table(CMM)(
                char[]          line,
                string[string]  an_object,
     return ref int[string]     obj_type_status,
@@ -3179,7 +3179,7 @@ template docAbstraction() {
     }
     return an_object;
   }
-  final string biblio_tag_map()(string abr) {
+  @safe final string biblio_tag_map()(string abr) {
     auto btm = [
       "au"           : "author_raw",
       "ed"           : "editor_raw",
@@ -3198,7 +3198,7 @@ template docAbstraction() {
     ];
     return btm[abr];
   }
-  void flow_txt_block_biblio(
+  @system void flow_txt_block_biblio(
     char[]                 line,
     return ref int[string] obj_type_status,
     return ref int         bib_entry,
@@ -3327,7 +3327,7 @@ template docAbstraction() {
       header_tag_value="";
     }
   }
-  void flow_table_closed_make_special_notation_table_(N,CMM)(
+  @system void flow_table_closed_make_special_notation_table_(N,CMM)(
                char[]                line,
     return ref string[string]        an_object,
     return ref ObjGenericComposite[] the_document_body_section,
@@ -3368,7 +3368,7 @@ template docAbstraction() {
     processing.remove("verse");
     ++cntr;
   }
-  string[string] flow_block_flag_line_empty_(B,N,CMM,Ts)(
+  @system string[string] flow_block_flag_line_empty_(B,N,CMM,Ts)(
                char[]                   line,
                string[string]           an_object,
                B                        bookindex_extract_hash,
@@ -3678,7 +3678,7 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string] flow_book_index_(B)(
+  @system string[string] flow_book_index_(B)(
                char[]          line,
                string[string]  an_object,
     return ref string          book_idx_tmp,
@@ -3728,13 +3728,13 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string] flow_heading_found_()(
+  @safe string[string] flow_heading_found_()(
                char[]                line,
                string[string]        heading_match_str,
                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 +/
@@ -3809,12 +3809,12 @@ template docAbstraction() {
     }
     return heading_match_str;
   }
-  char[] flow_heading_make_set_()(
+  @safe char[] flow_heading_make_set_()(
                char[]                line,
                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))
@@ -3865,7 +3865,7 @@ template docAbstraction() {
     }
     return line;
   }
-  string[string] flow_heading_matched_(CMM)(
+  @safe string[string] flow_heading_matched_(CMM)(
                char[]          line,
                string[string]  an_object,
     return ref int[string]     line_occur,
@@ -3874,7 +3874,7 @@ 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"];
@@ -4018,7 +4018,7 @@ template docAbstraction() {
     }
     return an_object;
   }
-  string[string] flow_para_match_()(
+  @safe string[string] flow_para_match_()(
                char[]         line,
                string[string]  an_object,
     return ref string          an_object_key,
@@ -4026,7 +4026,7 @@ 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);
@@ -4071,9 +4071,9 @@ template docAbstraction() {
     }
     return an_object;
   }
-  char[] font_faces_line()(
+  @safe char[] font_faces_line()(
     char[]  textline,
-  ) @safe {
+  ) {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     if (textline.match(rgx.inline_faces_line)) {
@@ -4093,10 +4093,10 @@ template docAbstraction() {
     }
     return textline;
   }
-  ObjGenericComposite flow_table_instructions(H)(
+  @safe 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";
@@ -4118,10 +4118,10 @@ template docAbstraction() {
     }
     return table_object;
   }
-  ObjGenericComposite flow_table_array_munge(T)(
+  @safe 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;
@@ -4242,7 +4242,7 @@ template docAbstraction() {
     comp_obj_block.text = _table_substantive;
     return table_object;
   }
-  ObjGenericComposite flow_table_substantive_munge(T)(
+  @system ObjGenericComposite flow_table_substantive_munge(T)(
     return ref ObjGenericComposite  table_object,
     return ref T                    table_substantive,
   ) {
@@ -4258,7 +4258,7 @@ template docAbstraction() {
     table_object = table_object.flow_table_array_munge(_table);
     return table_object;
   }
-  ObjGenericComposite flow_table_substantive_munge_special(T)(
+  @system ObjGenericComposite flow_table_substantive_munge_special(T)(
     return ref ObjGenericComposite  table_object,
     return ref T                    table_substantive,
   ) {
@@ -4276,11 +4276,11 @@ template docAbstraction() {
   }
                                                                                 /+ abstraction functions ↑ +/
                                                                                 /+ ↓ abstraction function emitters +/
-  pure struct OCNemitter {
+  @safe pure struct OCNemitter {
     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) @safe {
+    @safe auto ocn_emitter(int ocn_status_flag) {
       OCNset ocn;
       assert(ocn_status_flag <= OCNstatus.reset);
       ocn_object_number = ocn_bkidx = 0;
@@ -4325,7 +4325,7 @@ template docAbstraction() {
     }
   }
                                                                                 /+ +/
-  static struct ObjInlineMarkupMunge {
+  @safe static struct ObjInlineMarkupMunge {
     string[string] obj_txt;
     int n_foot, n_foot_reg, n_foot_sp_asterisk, n_foot_sp_plus;
     string asterisks_, plus_;
@@ -4333,13 +4333,13 @@ template docAbstraction() {
     static auto rgx = Rgx();
     static auto mkup = InlineMarkup();
     int stage_reset_note_numbers = true;
-    private auto initialize_note_numbers() @safe {
+    private auto initialize_note_numbers() {
       n_foot = 0;
       n_foot_reg = 0;
       n_foot_sp_asterisk = 0;
       n_foot_sp_plus = 0;
     }
-    static auto images()(string obj_txt_in) @safe {
+    @safe static auto images()(string obj_txt_in) {
       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
@@ -4369,7 +4369,7 @@ template docAbstraction() {
       }
       return obj_txt_in;
     }
-    TxtPlusHasFootnotes footnotes_endnotes_markup_and_number_or_stars()(string obj_txt_in, bool reset_note_numbers) @safe {
+    @safe TxtPlusHasFootnotes footnotes_endnotes_markup_and_number_or_stars()(string obj_txt_in, bool reset_note_numbers) {
       /+ endnotes (regular) +/
       bool flg_notes_reg  = false;
       bool flg_notes_star = false;
@@ -4433,10 +4433,10 @@ template docAbstraction() {
       );
       return t;
     }
-    private TxtPlusHasFootnotesUrlsImages object_notes_and_links_()(
+    @safe private TxtPlusHasFootnotesUrlsImages 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;
@@ -4496,10 +4496,10 @@ template docAbstraction() {
     }
     invariant() {
     }
-    auto munge_heading()(
+    @safe 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, "")
@@ -4515,7 +4515,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    auto munge_para()(string obj_txt_in) @safe {
+    @safe auto munge_para()(string obj_txt_in) {
       obj_txt["munge"]=(obj_txt_in)
         .replaceFirst(rgx.para_attribs, "")
         .replaceFirst(rgx.object_number_off_all, "");
@@ -4528,47 +4528,47 @@ template docAbstraction() {
       }
       return t;
     }
-    string munge_quote()(string obj_txt_in) @safe {
+    @safe string munge_quote()(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
     invariant() {
     }
-    auto munge_group(string obj_txt_in) @safe {
+    @safe auto munge_group(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    auto munge_block()(string obj_txt_in) @safe {
+    @safe auto munge_block()(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    auto munge_verse()(string obj_txt_in) @safe {
+    @safe auto munge_verse()(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       TxtPlusHasFootnotesUrlsImages t = object_notes_and_links_(obj_txt["munge"]);
       return t;
     }
     invariant() {
     }
-    string munge_code()(string obj_txt_in) @safe {
+    @safe string munge_code()(string obj_txt_in) {
       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) @safe {
+    @safe string munge_table()(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
     invariant() {
     }
-    string munge_comment()(string obj_txt_in) @safe {
+    @safe string munge_comment()(string obj_txt_in) {
       obj_txt["munge"]=obj_txt_in;
       return obj_txt["munge"];
     }
@@ -4580,12 +4580,12 @@ template docAbstraction() {
     static auto munge = ObjInlineMarkupMunge();
     string[string] obj_txt;
     static string anchor_tag = "";
-    TxtAndAnchorTagPlusHasFootnotesUrlsImages obj_inline_markup_and_anchor_tags_and_misc(CMM)(
+    @safe TxtAndAnchorTagPlusHasFootnotesUrlsImages obj_inline_markup_and_anchor_tags_and_misc(CMM)(
       string[string]   obj_,
       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"]
@@ -4673,23 +4673,23 @@ template docAbstraction() {
     }
     invariant() {
     }
-    auto _clean_heading_toc_()(
+    @safe 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,
        "");
      return heading_toc_;
     };
-    ObjGenericComposite[] flow_table_of_contents_gather_headings(CMM)(
+    @safe ObjGenericComposite[] flow_table_of_contents_gather_headings(CMM)(
                  string[string]         obj_,
                  CMM                    conf_make_meta,
                  string[string]         tag_in_seg,
                  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();
@@ -4773,12 +4773,12 @@ template docAbstraction() {
     static string heading_number_auto_composite = "";
     static string heading_number_auto_composite_segname = "";
     static bool[] auto_heading_numbering = [ true, true, true, true];
-    static string _configured_auto_heading_numbering_and_segment_anchor_tags(CMM)(
+    @safe static string _configured_auto_heading_numbering_and_segment_anchor_tags(CMM)(
       string           munge_,
       string[string]   obj_,
       CMM              conf_make_meta,
       bool             _new_doc,
-    ) @safe {
+    ) {
       if (_new_doc) {
         heading_num = [ 0, 0, 0, 0 ];
         heading_number_auto_composite = "";
@@ -4917,11 +4917,11 @@ template docAbstraction() {
       return munge_;
     }
     static int heading_num_lev1 = 0;
-    static string _make_segment_anchor_tags_if_none_provided()(
+    @safe static string _make_segment_anchor_tags_if_none_provided()(
       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)) {
@@ -4954,11 +4954,11 @@ template docAbstraction() {
                                                                                 /+ +/
   struct ObjAttributes {
     string[string] _obj_attrib;
-    string obj_attributes()(
+    @safe string obj_attributes()(
       string              obj_is_,
       string              obj_raw,
       ObjGenericComposite _comp_obj_heading,
-    ) @safe {
+    ) {
       scope(exit) {
         destroy(obj_is_);
         destroy(obj_raw);
@@ -5017,7 +5017,7 @@ template docAbstraction() {
     }
     private:
     string _obj_attributes;
-    string txt_para_and_blocks()(string obj_txt_in) {
+    @safe string txt_para_and_blocks()(string obj_txt_in) {
       if (obj_txt_in.matchFirst(rgx.para_bullet)) {
         _obj_attributes =" \"bullet\": \"true\","
         ~ " \"indent_hang\": 0,"
@@ -5041,7 +5041,7 @@ template docAbstraction() {
       }
       return _obj_attributes;
     }
-    string txt_heading()(string obj_txt_in) @safe {
+    @safe string txt_heading()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"para\","
       ~ " \"is\": \"heading\"";
@@ -5049,7 +5049,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_para()(string obj_txt_in) @safe {
+    @safe string txt_para()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"para\","
       ~ " \"is\": \"para\"";
@@ -5057,7 +5057,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_quote()(string obj_txt_in) @safe {
+    @safe string txt_quote()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"quote\"";
@@ -5065,7 +5065,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_group()(string obj_txt_in) @safe {
+    @safe string txt_group()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"group\"";
@@ -5073,7 +5073,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_block()(string obj_txt_in) @safe {
+    @safe string txt_block()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"block\"";
@@ -5081,7 +5081,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_verse()(string obj_txt_in) @safe {
+    @safe string txt_verse()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"verse\"";
@@ -5089,7 +5089,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_code()(string obj_txt_in) @safe {
+    @safe string txt_code()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"code\"";
@@ -5097,7 +5097,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_table()(string obj_txt_in) @safe {
+    @safe string txt_table()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"content\","
       ~ " \"of\": \"block\","
       ~ " \"is\": \"table\"";
@@ -5105,7 +5105,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string txt_comment()(string obj_txt_in) @safe {
+    @safe string txt_comment()(string obj_txt_in) {
       _obj_attributes = " \"use\": \"comment\","
       ~ " \"of\": \"comment\","
       ~ " \"is\": \"comment\"";
@@ -5113,11 +5113,11 @@ template docAbstraction() {
     }
     invariant() {
     }
-    string _set_additional_values_parse_as_json()(
+    @safe string _set_additional_values_parse_as_json()(
       string              _obj_attrib,
       string              obj_is_,
       ObjGenericComposite _comp_obj_heading,
-    ) @safe {
+    ) {
       JSONValue oa_j = parseJSON(_obj_attrib);
       assert(
         (oa_j.type == JSON_TYPE.OBJECT)
@@ -5144,11 +5144,11 @@ template docAbstraction() {
     string[] object_numbers;
     string[][string][string] bi_hash_nugget;
     string[] bi_main_terms_split_arr;
-    string[][string][string] bookindex_nugget_hash(N,S)(
+    @safe string[][string][string] bookindex_nugget_hash(N,S)(
       string bookindex_section,
       N      obj_cite_digits,
       S      tag_in_seg,
-    ) @safe {
+    ) {
       debug(asserts) {
         static assert(is(typeof(obj_cite_digits.object_number) == int));
       }
@@ -5214,9 +5214,9 @@ template docAbstraction() {
   }
   struct BookIndexReportIndent {
     int mkn, skn;
-    void bookindex_report_indented()(
+    @safe void bookindex_report_indented()(
       string[][string][string] bookindex_unordered_hashes
-    ) @safe {
+    ) {
       auto mainkeys
         = bookindex_unordered_hashes.byKey.array.sort().release;
       foreach (mainkey; mainkeys) {
@@ -5242,9 +5242,9 @@ template docAbstraction() {
     int  mkn, skn;
     static auto rgx = Rgx();
     static auto munge = ObjInlineMarkupMunge();
-    void bookindex_write_section()(
+    @safe 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;
@@ -5271,7 +5271,7 @@ template docAbstraction() {
         ++mkn;
       }
     }
-    auto bookindex_build_abstraction_section(N,B)(
+    @system auto bookindex_build_abstraction_section(N,B)(
       string[][string][string] bookindex_unordered_hashes,
       N                        obj_cite_digits,
       B                        opt_action,
@@ -5435,11 +5435,11 @@ template docAbstraction() {
     int previous_count;
     int mkn;
     static auto rgx = Rgx();
-    private auto gather_notes_for_endnote_section(
+    @safe private auto gather_notes_for_endnote_section(
       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")
@@ -5515,7 +5515,7 @@ template docAbstraction() {
       }
       return object_notes;
     }
-    private auto gathered_notes() @safe {
+    @safe private auto gathered_notes() {
       string[][string] endnotes_;
       if (object_notes.length > 1) {
         endnotes_["notes"] = (object_notes["notes"].split(rgx.break_string))[0..$-1];
@@ -5526,10 +5526,10 @@ template docAbstraction() {
       }
       return endnotes_;
     }
-    private auto endnote_objects(N,O)(
+    @safe private auto endnote_objects(N,O)(
       N              obj_cite_digits,
       O              opt_action,
-    ) @safe {
+    ) {
       mixin spineNode;
       ObjGenericComposite[] the_endnotes_section;
       auto endnotes_ = gathered_notes();
@@ -5639,7 +5639,7 @@ template docAbstraction() {
   }
                                                                                 /+ +/
   struct Bibliography {
-    public JSONValue[] flow_bibliography_()(
+  @system public JSONValue[] flow_bibliography_()(
       return ref string[]    biblio_unsorted_incomplete,
       return ref JSONValue[] bib_arr_json
     ) {
@@ -5664,7 +5664,7 @@ template docAbstraction() {
       }
       return biblio_sorted__;
     }
-    final private JSONValue[] biblio_make_unsorted_array_of_json_objects()(
+    @system final private JSONValue[] biblio_make_unsorted_array_of_json_objects()(
       string[]      biblio_unordered,
       JSONValue[]   bib_arr_json
     ) {
@@ -5692,7 +5692,7 @@ template docAbstraction() {
       }
       return bib_arr_json.dup;
     }
-    final private JSONValue[] biblio_sort()(JSONValue[] biblio_unordered) {
+    @system final private JSONValue[] biblio_sort()(JSONValue[] biblio_unordered) {
       JSONValue[] biblio_sorted_;
       biblio_sorted_
         = sort!((a, b){
@@ -5707,7 +5707,7 @@ template docAbstraction() {
       }
       return biblio_sorted_;
     }
-    void biblio_debug()(JSONValue[] biblio_sorted) {
+    @system void biblio_debug()(JSONValue[] biblio_sorted) {
       debug(biblio0) {
         foreach (j; biblio_sorted) {
           if (!empty(j["fulltitle"].str)) {
@@ -5723,7 +5723,7 @@ template docAbstraction() {
     int obj_cite_digit;
     int[string] p_; // p_ parent_
     static auto rgx = Rgx();
-    ObjGenericComposite node_location_emitter(La,Ta,N)(
+    @safe ObjGenericComposite node_location_emitter(La,Ta,N)(
       string         lev_markup_number,
       string[string] tag_in_seg,
       La             lev_anchor_tag,
@@ -5732,7 +5732,7 @@ template docAbstraction() {
       int            cntr_,
       int            ptr_,
       string         is_
-    ) @safe {
+    ) {
       debug(asserts) {
         static assert(is(typeof(obj_cite_digits.object_number) == int));
       }
@@ -5777,7 +5777,7 @@ template docAbstraction() {
     }
     invariant() {
     }
-    ObjGenericComposite node_emitter_heading(Hd,TaL,TA,N,fNr,fNs,fL)(
+    @safe ObjGenericComposite node_emitter_heading(Hd,TaL,TA,N,fNr,fNs,fL)(
       string         _text,
       string         lev_markup_number,
       string         lev_collapsed_number,
@@ -5794,7 +5794,7 @@ 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));
@@ -5976,10 +5976,10 @@ template docAbstraction() {
   }
                                                                                 /+ abstraction functions emitters ↑ +/
                                                                                 /+ ↓ abstraction functions assertions +/
-  pure void assertions_doc_structure()(
+  @safe 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);
@@ -6151,7 +6151,7 @@ template docAbstraction() {
       break;
     }
   }
-  pure void assertions_flag_types_block_status_none_or_closed()(int[string] obj_type_status) @safe {
+  @safe pure void assertions_flag_types_block_status_none_or_closed()(int[string] obj_type_status) {
     assert(
       (obj_type_status["code"] == TriState.off)
       || (obj_type_status["code"] == TriState.closing),
@@ -6176,7 +6176,7 @@ template docAbstraction() {
                                                                                 /+ abstraction functions assertions ↑ +/
 }                                                                               /+ ← closed: template docAbstraction +/
 template docSectKeysSeq() {
-  auto docSectKeysSeq(string[][string] document_section_keys_sequenced) @safe {
+  @safe auto docSectKeysSeq(string[][string] document_section_keys_sequenced) {
     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 eb050e4..81f0ef4 100644
--- a/src/doc_reform/meta/metadoc_harvest.d
+++ b/src/doc_reform/meta/metadoc_harvest.d
@@ -1,9 +1,9 @@
 module doc_reform.meta.metadoc_harvest;
 template spineMetaDocHarvest() {
-  auto spineMetaDocHarvest(T,H)(
+  @safe 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/meta/metadoc_object_setter.d b/src/doc_reform/meta/metadoc_object_setter.d
index 908d168..e916a90 100644
--- a/src/doc_reform/meta/metadoc_object_setter.d
+++ b/src/doc_reform/meta/metadoc_object_setter.d
@@ -24,22 +24,22 @@ template ObjectSetter() {
     int                    o_n_bibliography                   = 0;
     int                    o_n_book_index                     = 0;
     int                    o_n_blurb                          = 0;
-    string object_number_substantive() const @property {
+    @safe  string object_number_substantive() const @property {
       return (o_n_substantive==0) ? "" : o_n_substantive.to!string;
     }
-    string object_number_non_substantive() const @property {
+    @safe string object_number_non_substantive() const @property {
       return (o_n_non_substantive==0) ? "" : o_n_non_substantive.to!string;
     }
-    string object_number_glossary() const @property {
+    @safe string object_number_glossary() const @property {
       return (o_n_glossary==0) ? "" : o_n_glossary.to!string;
     }
-    string object_number_bibliography() const @property {
+    @safe string object_number_bibliography() const @property {
       return (o_n_bibliography==0) ? "" : o_n_bibliography.to!string;
     }
-    string object_number_book_index() const @property {
+    @safe string object_number_book_index() const @property {
       return (o_n_book_index==0) ? "" : o_n_book_index.to!string;
     }
-    string object_number_blurb() const @property {
+    @safe string object_number_blurb() const @property {
       return (o_n_blurb==0) ? "" : o_n_blurb.to!string;
     }
     bool                   object_number_off                  = false;
@@ -49,13 +49,13 @@ template ObjectSetter() {
     string[string][string] node;
     int                    ocn                                = 0;
     string                 identifier                         = "";
-    string object_number() const @property {
+    @safe string object_number() const @property {
       return (ocn==0) ? "" : ocn.to!string;
     }
     int                    o_n_type                           = 0;
     int                    heading_lev_markup                 = 9;
     int                    heading_lev_collapsed              = 9;
-    string marked_up_level() const @property {
+    @safe string marked_up_level() const @property {
       string _out;
       switch (heading_lev_markup) {
       case 0  : _out = "A"; break;
diff --git a/src/doc_reform/meta/metadoc_show_config.d b/src/doc_reform/meta/metadoc_show_config.d
index b71fbab..a432c3b 100644
--- a/src/doc_reform/meta/metadoc_show_config.d
+++ b/src/doc_reform/meta/metadoc_show_config.d
@@ -1,6 +1,6 @@
 module doc_reform.meta.metadoc_show_config;
 template spineShowConfig() {
-  void spineShowConfig(T)(
+  @safe void spineShowConfig(T)(
     T  doc_matters,
   ) {
     import
diff --git a/src/doc_reform/meta/metadoc_show_make.d b/src/doc_reform/meta/metadoc_show_make.d
index e656a29..854552a 100644
--- a/src/doc_reform/meta/metadoc_show_make.d
+++ b/src/doc_reform/meta/metadoc_show_make.d
@@ -1,6 +1,6 @@
 module doc_reform.meta.metadoc_show_make;
 template spineShowMake() {
-  void spineShowMake(T)(
+  @safe void spineShowMake(T)(
     T  doc_matters,
   ) {
     import
diff --git a/src/doc_reform/meta/metadoc_show_metadata.d b/src/doc_reform/meta/metadoc_show_metadata.d
index 0bd6854..05758b6 100644
--- a/src/doc_reform/meta/metadoc_show_metadata.d
+++ b/src/doc_reform/meta/metadoc_show_metadata.d
@@ -1,6 +1,6 @@
 module doc_reform.meta.metadoc_show_metadata;
 template spineShowMetaData() {
-  void spineShowMetaData(T)(
+  @safe void spineShowMetaData(T)(
     T  doc_matters,
   ) {
     import
diff --git a/src/doc_reform/meta/metadoc_show_summary.d b/src/doc_reform/meta/metadoc_show_summary.d
index 9f2e34b..f774a6d 100644
--- a/src/doc_reform/meta/metadoc_show_summary.d
+++ b/src/doc_reform/meta/metadoc_show_summary.d
@@ -1,6 +1,6 @@
 module doc_reform.meta.metadoc_show_summary;
 template spineMetaDocSummary() {
-  void spineMetaDocSummary(S,T)(
+  @safe void spineMetaDocSummary(S,T)(
     const S  doc_abstraction,
           T  doc_matters,
   ) {