0.13.6 dlang function calls, syntax (ufcs related), logic should be retained

12 files changed, 370 insertions, 382 deletions

diff --git a/src/sdp/abstraction.d b/src/sdp/abstraction.d
index 77a5512..65bb5cd 100644
--- a/src/sdp/abstraction.d
+++ b/src/sdp/abstraction.d
@@ -100,7 +100,7 @@ template SiSUabstraction() {
       }
       auto language() {
         string _k;
-        if (auto m = match(fn_src, rgx.language_code_and_filename)) {
+        if (auto m = fn_src.match(rgx.language_code_and_filename)) {
           _k = m.captures[1];
         } else {
           _k = "en";
diff --git a/src/sdp/ao_abstract_doc_source.d b/src/sdp/ao_abstract_doc_source.d
index 82341cd..a277a61 100644
--- a/src/sdp/ao_abstract_doc_source.d
+++ b/src/sdp/ao_abstract_doc_source.d
@@ -92,47 +92,47 @@ template SiSUdocAbstraction() {
   ) {
     switch (obj.heading_lev_markup) {
     case 0:
-      lv_ancestors[0] = to!string(obj.text);
+      lv_ancestors[0] = obj.text.to!string;
       foreach(k; 1..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 1:
-      lv_ancestors[1] = to!string(obj.text);
+      lv_ancestors[1] = obj.text.to!string;
       foreach(k; 2..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 2:
-      lv_ancestors[2] = to!string(obj.text);
+      lv_ancestors[2] = obj.text.to!string;
       foreach(k; 3..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 3:
-      lv_ancestors[3] = to!string(obj.text);
+      lv_ancestors[3] = obj.text.to!string;
       foreach(k; 4..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 4:
-      lv_ancestors[4] = to!string(obj.text);
+      lv_ancestors[4] = obj.text.to!string;
       foreach(k; 5..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 5:
-      lv_ancestors[5] = to!string(obj.text);
+      lv_ancestors[5] = obj.text.to!string;
       foreach(k; 6..8) {
         lv_ancestors[k] = "";
       }
       goto default;
     case 6:
-      lv_ancestors[6] = to!string(obj.text);
+      lv_ancestors[6] = obj.text.to!string;
       lv_ancestors[7] = "";
       goto default;
     case 7:
-      lv_ancestors[7] = to!string(obj.text);
+      lv_ancestors[7] = obj.text.to!string;
       goto default;
     default:
       obj.heading_ancestors_text = lv_ancestors.dup;
@@ -387,11 +387,11 @@ template SiSUdocAbstraction() {
         /+ object other than "code block" object
            (includes regular text paragraph, headings & blocks other than code) +/
         /+ heading, glossary, blurb, poem, group, block, quote, table +/
-        if ((matchFirst(line, rgx.heading_biblio)
+        if (line.matchFirst(rgx.heading_biblio)
         || (type["biblio_section"] == State.on
-        && (!matchFirst(line, rgx.heading_blurb_glossary))))
-        && (!matchFirst(line, rgx.heading))
-        && (!matchFirst(line, rgx.comment))) {
+        && (!(line.matchFirst(rgx.heading_blurb_glossary)))
+        && (!(line.matchFirst(rgx.heading)))
+        && (!(line.matchFirst(rgx.comment))))) {
           /+ within section (block object): biblio +/
           type["glossary_section"] = State.off;
           type["biblio_section"] = State.on;
@@ -404,11 +404,11 @@ template SiSUdocAbstraction() {
             }
           }
           continue;
-        } else if ((matchFirst(line, rgx.heading_glossary)
+        } else if (line.matchFirst(rgx.heading_glossary)
         || (type["glossary_section"] == State.on
-        && (!matchFirst(line, rgx.heading_biblio_blurb))))
-        && (!matchFirst(line, rgx.heading))
-        && (!matchFirst(line, rgx.comment))) {
+        && (!(line.matchFirst(rgx.heading_biblio_blurb)))
+        && (!(line.matchFirst(rgx.heading)))
+        && (!(line.matchFirst(rgx.comment))))) {
           /+ within section (block object): glossary +/
           debug(glossary) {
             writeln(__LINE__);
@@ -427,7 +427,7 @@ template SiSUdocAbstraction() {
             type["para"] = State.on;
             line_occur["para"] = State.off;
             an_object_key="glossary_nugget"; //
-            if (matchFirst(line, rgx.heading_glossary)) {
+            if (line.matchFirst(rgx.heading_glossary)) {
               comp_obj_heading_                       = comp_obj_heading_.init;
               comp_obj_heading_.use                   = "backmatter";
               comp_obj_heading_.is_of                 = "para";
@@ -462,7 +462,7 @@ template SiSUdocAbstraction() {
               comp_obj_para.use                   = "backmatter";
               comp_obj_para.is_of                 = "para";
               comp_obj_para.is_a                  = "glossary";
-              comp_obj_para.text                  = to!string(line).strip;
+              comp_obj_para.text                  = line.to!string.strip;
               comp_obj_para.ocn                   = 0;
               comp_obj_para.obj_cite_number       = "";
               comp_obj_para.indent_hang           = indent["hang_position"];
@@ -473,11 +473,11 @@ template SiSUdocAbstraction() {
             type["ocn_status"] = TriState.off;
           }
           continue;
-        } else if ((matchFirst(line, rgx.heading_blurb)
+        } else if (line.matchFirst(rgx.heading_blurb)
         || (type["blurb_section"] == State.on
-        && (!matchFirst(line, rgx.heading_biblio_glossary))))
-        && (!matchFirst(line, rgx.heading))
-        && (!matchFirst(line, rgx.comment))) {
+        && (!(line.matchFirst(rgx.heading_biblio_glossary)))
+        && (!(line.matchFirst(rgx.heading)))
+        && (!(line.matchFirst(rgx.comment))))) {
           /+ within section (block object): blurb +/
           debug(blurb) {
             writeln(__LINE__);
@@ -495,7 +495,7 @@ template SiSUdocAbstraction() {
             type["para"] = State.on;
             line_occur["para"] = State.off;
             an_object_key="blurb_nugget";
-            if (matchFirst(line, rgx.heading_blurb)) {
+            if (line.matchFirst(rgx.heading_blurb)) {
               comp_obj_heading_                       = comp_obj_heading_.init;
               comp_obj_heading_.use                   = "backmatter";
               comp_obj_heading_.is_of                 = "para";
@@ -524,19 +524,19 @@ template SiSUdocAbstraction() {
               comp_obj_heading_.parent_lev_markup     = 0;
               comp_obj_heading_.anchor_tags           = ["blurb"];
               the_blurb_section                       ~= comp_obj_heading_;
-            } else if ((matchFirst(line, rgx.heading))
+            } else if (line.matchFirst(rgx.heading)
             && (opt_action_bool["backmatter"] && opt_action_bool["section_blurb"])) {
               comp_obj_heading_                       = comp_obj_heading_.init;
               comp_obj_heading_.use                   = "backmatter";
               comp_obj_heading_.is_of                 = "para";
               comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = to!string(line);
+              comp_obj_heading_.text                  = line.to!string;
               comp_obj_heading_.ocn                   = 0;
               comp_obj_heading_.obj_cite_number       = "";
               comp_obj_heading_.segment_anchor_tag    = "blurb";
-              comp_obj_heading_.marked_up_level       = to!string(an_object["lev"]);
-              comp_obj_heading_.heading_lev_markup    = to!int(an_object["lev_markup_number"]);    // make int, remove need to conv
-              comp_obj_heading_.heading_lev_collapsed = to!int(an_object["lev_collapsed_number"]); // make int, remove need to conv
+              comp_obj_heading_.marked_up_level       = an_object["lev"].to!string;
+              comp_obj_heading_.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
+              comp_obj_heading_.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
               comp_obj_heading_.parent_ocn            = 1;
               comp_obj_heading_.parent_lev_markup     = 0;
               the_blurb_section                   ~= comp_obj_heading_;
@@ -546,7 +546,7 @@ template SiSUdocAbstraction() {
               comp_obj_para.use                   = "backmatter";
               comp_obj_para.is_of                 = "para";
               comp_obj_para.is_a                  = "blurb";
-              comp_obj_para.text                  = to!string(line).strip;
+              comp_obj_para.text                  = line.to!string.strip;
               comp_obj_para.ocn                   = 0;
               comp_obj_para.obj_cite_number       = "";
               comp_obj_para.indent_hang           = indent["hang_position"];
@@ -586,12 +586,12 @@ template SiSUdocAbstraction() {
             "block status: none or closed"
           );
           assertions_flag_types_block_status_none_or_closed(type);
-          if (matchFirst(line, rgx.block_open)) {
-            if (matchFirst(line, (rgx.block_poem_open))) {
+          if (line.matchFirst(rgx.block_open)) {
+            if (line.matchFirst(rgx.block_poem_open)) {
               /+ poem to verse exceptions! +/
               object_reset(an_object);
               processing.remove("verse");
-              obj_cite_number_poem["start"] = to!string(obj_cite_number);
+              obj_cite_number_poem["start"] = obj_cite_number.to!string;
             }
             _start_block_(line, type, obj_cite_number_poem);
             continue;
@@ -614,14 +614,14 @@ template SiSUdocAbstraction() {
                 writeln(line);
               }
               assert(
-                matchFirst(line, rgx.book_index)
-                || matchFirst(line, rgx.book_index_open)
+                line.matchFirst(rgx.book_index)
+                || line.matchFirst(rgx.book_index_open)
                 || type["book_index"] == State.on
               );
             }
-            if ((matchFirst(line, rgx.book_index))
-            || (matchFirst(line, rgx.book_index_open))
-            || (type["book_index"] == State.on ))  {
+            if (line.matchFirst(rgx.book_index)
+            || line.matchFirst(rgx.book_index_open)
+            || type["book_index"] == State.on )  {
               /+ book_index +/
               _book_index_(line, book_idx_tmp, an_object, type, opt_action_bool);
             } else {
@@ -667,7 +667,7 @@ template SiSUdocAbstraction() {
                    - should happen before endnote links set (they need to be moved down?)
                   // node_construct.node_emitter_heading segment anchor tag
                 +/
-                if (matchFirst(line, rgx.heading)) {
+                if (line.matchFirst(rgx.heading)) {
                   /+ heading match +/
                   _heading_matched_(line, line_occur, an_object, an_object_key, lv, collapsed_lev, type, dochead_meta_aa);
                 } else if (line_occur["para"] == State.off) {
@@ -719,7 +719,7 @@ template SiSUdocAbstraction() {
             if ((type["heading"] == State.on)
             && (line_occur["heading"] > State.off)) {
               /+ heading object (current line empty) +/
-              obj_cite_number = (to!int(an_object["lev_markup_number"]) == 0)
+              obj_cite_number = (an_object["lev_markup_number"].to!int == 0)
               ? (ocn_emit(3))
               : (obj_cite_number = ocn_emit(type["ocn_status"]));
               an_object["is"] = "heading";
@@ -728,14 +728,14 @@ template SiSUdocAbstraction() {
                 obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
               an_object["substantive"] = substantive_object_and_anchor_tags_tuple[sObj.content];
               anchor_tags = substantive_object_and_anchor_tags_tuple[sObj.anchor_tags];
-              if (to!int(an_object["lev_markup_number"]) == 4) {
+              if (an_object["lev_markup_number"].to!int == 4) {
                 segment_anchor_tag_that_object_belongs_to = anchor_tags[0];
                 segment_anchor_tag_that_object_belongs_to_uri = anchor_tags[0] ~ ".fnSuffix";
                 anchor_tag_ = anchor_tags[0];
-              } else if (to!int(an_object["lev_markup_number"]) > 4) {
+              } else if (an_object["lev_markup_number"].to!int > 4) {
                 segment_anchor_tag_that_object_belongs_to = anchor_tag_;
-                segment_anchor_tag_that_object_belongs_to_uri = anchor_tag_ ~ ".fnSuffix#" ~ to!string(obj_cite_number);
-              } else if (to!int(an_object["lev_markup_number"]) < 4) {
+                segment_anchor_tag_that_object_belongs_to_uri = anchor_tag_ ~ ".fnSuffix#" ~ obj_cite_number.to!string;
+              } else if (an_object["lev_markup_number"].to!int < 4) {
                 segment_anchor_tag_that_object_belongs_to = "";
                 segment_anchor_tag_that_object_belongs_to_uri = "";
               }
@@ -816,9 +816,9 @@ template SiSUdocAbstraction() {
               comp_obj_para.use                   = "body";
               comp_obj_para.is_of                 = "para";
               comp_obj_para.is_a                  = "para";
-              comp_obj_para.text                  = to!string(an_object["substantive"]).strip;
+              comp_obj_para.text                  = an_object["substantive"].to!string.strip;
               comp_obj_para.ocn                   = obj_cite_number;
-              comp_obj_para.obj_cite_number       = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+              comp_obj_para.obj_cite_number       = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
               comp_obj_para.indent_hang           = indent["hang_position"];
               comp_obj_para.indent_base           = indent["base_position"];
               comp_obj_para.bullet                = bullet;
@@ -857,12 +857,11 @@ template SiSUdocAbstraction() {
             type["glossary_section"] = State.off;
             type["blurb_section"] = State.off;
           }
-          previous_length = to!int(the_document_body_section.length);
-          if (match(
-            the_document_body_section[$-1].text,
+          previous_length = the_document_body_section.length.to!int;
+          if ((the_document_body_section[$-1].text).match(
             rgx.inline_notes_delimiter_al_regular_number_note
           )) {
-            previous_count=to!int(the_document_body_section.length -1);
+            previous_count=(the_document_body_section.length -1).to!int;
             note_section.gather_notes_for_endnote_section(
               the_document_body_section,
               segment_anchor_tag_that_object_belongs_to,
@@ -979,7 +978,7 @@ template SiSUdocAbstraction() {
       comp_obj_para.use                   = "backmatter";
       comp_obj_para.is_of                 = "para";
       comp_obj_para.is_a                  = "bibliography";
-      comp_obj_para.text                  = to!string(out_).strip;
+      comp_obj_para.text                  = out_.to!string.strip;
       comp_obj_para.ocn                   = 0;
       comp_obj_para.obj_cite_number       = "";
       comp_obj_para.indent_hang           = 0;
@@ -1052,7 +1051,7 @@ template SiSUdocAbstraction() {
         ".fnSuffix",
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
     }
@@ -1065,7 +1064,7 @@ template SiSUdocAbstraction() {
         ".fnSuffix",
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       toc_txt_ = format(
@@ -1074,7 +1073,7 @@ template SiSUdocAbstraction() {
         "glossary",               // _anchor_tag
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     }
@@ -1087,7 +1086,7 @@ template SiSUdocAbstraction() {
         ".fnSuffix",
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
     
@@ -1097,7 +1096,7 @@ template SiSUdocAbstraction() {
         "bibliography",           // _anchor_tag
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     }
@@ -1110,7 +1109,7 @@ template SiSUdocAbstraction() {
         ".fnSuffix",
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
     }
@@ -1121,7 +1120,7 @@ template SiSUdocAbstraction() {
         "bookindex",              // _anchor_tag
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     }
@@ -1134,7 +1133,7 @@ template SiSUdocAbstraction() {
         ".fnSuffix",
       );
       toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       comp_obj_toc.inline_links               = true;
       the_table_of_contents_section["seg"]    ~= comp_obj_toc;
       toc_txt_ = format(
@@ -1144,7 +1143,7 @@ template SiSUdocAbstraction() {
       );
       toc_txt_= munge.url_links(toc_txt_);
       comp_obj_toc.inline_links               = true;
-      comp_obj_toc.text                       = to!string(toc_txt_).strip;
+      comp_obj_toc.text                       = toc_txt_.to!string.strip;
       the_table_of_contents_section["scroll"] ~= comp_obj_toc;
     }
     debug(toc) {
@@ -1233,7 +1232,7 @@ template SiSUdocAbstraction() {
     string[] _images;
     auto extract_images(S)(S content_block) {
       string[] images_;
-      if (auto m = matchAll(content_block, rgx.image)) {
+      if (auto m = content_block.matchAll(rgx.image)) {
         images_ ~= m.captures[1];
       }
       return images_;
@@ -1640,15 +1639,15 @@ template SiSUdocAbstraction() {
     auto rgx = Rgx();
     if ((!line.empty) && (type["ocn_status_multi_obj"] == TriState.off)) {
       /+ not multi-line object, check whether obj_cite_number is on or turned off +/
-      if (matchFirst(line, rgx.obj_cite_number_block_marks)) {
+      if (line.matchFirst(rgx.obj_cite_number_block_marks)) {
         /+ switch off obj_cite_number +/
-        if (matchFirst(line, rgx.obj_cite_number_off_block)) {
+        if (line.matchFirst(rgx.obj_cite_number_off_block)) {
           type["ocn_status_multi_obj"] = TriState.on;
           debug(ocnoff) {
             writeln(line);
           }
         }
-        if (matchFirst(line, rgx.obj_cite_number_off_block_dh)) {
+        if (line.matchFirst(rgx.obj_cite_number_off_block_dh)) {
           type["ocn_status_multi_obj"] = TriState.closing;
           debug(ocnoff) {
             writeln(line);
@@ -1656,9 +1655,9 @@ template SiSUdocAbstraction() {
         }
       } else {
         if (type["ocn_status_multi_obj"] == TriState.off) {
-          if (matchFirst(line, rgx.obj_cite_number_off)) {
+          if (line.matchFirst(rgx.obj_cite_number_off)) {
             type["ocn_status"] = TriState.on;
-          } else if (matchFirst(line, rgx.obj_cite_number_off_dh)) {
+          } else if (line.matchFirst(rgx.obj_cite_number_off_dh)) {
             type["ocn_status"] = TriState.closing;
           } else {
             type["ocn_status"] = TriState.off;
@@ -1669,7 +1668,7 @@ template SiSUdocAbstraction() {
         }
       }
     } else if ((!line.empty) && (type["ocn_status_multi_obj"] > TriState.off)) {
-      if (matchFirst(line, rgx.obj_cite_number_off_block_close)) {
+      if (line.matchFirst(rgx.obj_cite_number_off_block_close)) {
         type["ocn_status_multi_obj"] = TriState.off;
         type["ocn_status"] = TriState.off;
         debug(ocnoff) {
@@ -1689,7 +1688,7 @@ template SiSUdocAbstraction() {
       static assert(is(typeof(obj_cite_number_poem) == string[string]));
     }
     auto rgx = Rgx();
-    if (matchFirst(line, rgx.block_curly_code_open)) {
+    if (line.matchFirst(rgx.block_curly_code_open)) {
       /+ curly code open +/
       debug(code) {                              // code (curly) open
         writefln(
@@ -1700,7 +1699,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["code"] = TriState.on;
       type["curly_code"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_curly_poem_open)) {
+    } else if (line.matchFirst(rgx.block_curly_poem_open)) {
       /+ curly poem open +/
       debug(poem) {                              // poem (curly) open
         writefln(
@@ -1709,12 +1708,12 @@ template SiSUdocAbstraction() {
         );
       }
       obj_cite_number_poem["start"] =
-        to!string(obj_cite_number);
+        obj_cite_number.to!string;
       type["blocks"] = TriState.on;
       type["verse_new"] = State.on;
       type["poem"] = TriState.on;
       type["curly_poem"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_curly_group_open)) {
+    } else if (line.matchFirst(rgx.block_curly_group_open)) {
       /+ curly group open +/
       debug(group) {                             // group (curly) open
         writefln(
@@ -1725,7 +1724,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["group"] = TriState.on;
       type["curly_group"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_curly_block_open)) {
+    } else if (line.matchFirst(rgx.block_curly_block_open)) {
       /+ curly block open +/
       debug(block) {                             // block (curly) open
         writefln(
@@ -1736,7 +1735,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["block"] = TriState.on;
       type["curly_block"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_curly_quote_open)) {
+    } else if (line.matchFirst(rgx.block_curly_quote_open)) {
       /+ curly quote open +/
       debug(quote) {                             // quote (curly) open
         writefln(
@@ -1747,7 +1746,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["quote"] = TriState.on;
       type["curly_quote"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_curly_table_open)) {
+    } else if (line.matchFirst(rgx.block_curly_table_open)) {
       /+ curly table open +/
       debug(table) {                             // table (curly) open
         writefln(
@@ -1758,7 +1757,7 @@ template SiSUdocAbstraction() {
       type["blocks"]      = TriState.on;
       type["table"]       = TriState.on;
       type["curly_table"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_code_open)) {
+    } else if (line.matchFirst(rgx.block_tic_code_open)) {
       /+ tic code open +/
       debug(code) {                              // code (tic) open
         writefln(
@@ -1769,7 +1768,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["code"] = TriState.on;
       type["tic_code"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_poem_open)) {
+    } else if (line.matchFirst(rgx.block_tic_poem_open)) {
       /+ tic poem open +/
       debug(poem) {                              // poem (tic) open
         writefln(
@@ -1777,12 +1776,12 @@ template SiSUdocAbstraction() {
           line
         );
       }
-      obj_cite_number_poem["start"] = to!string(obj_cite_number);
+      obj_cite_number_poem["start"] = obj_cite_number.to!string;
       type["blocks"] = TriState.on;
       type["verse_new"] = State.on;
       type["poem"] = TriState.on;
       type["tic_poem"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_group_open)) {
+    } else if (line.matchFirst(rgx.block_tic_group_open)) {
       /+ tic group open +/
       debug(group) {                             // group (tic) open
         writefln(
@@ -1793,7 +1792,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["group"] = TriState.on;
       type["tic_group"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_block_open)) {
+    } else if (line.matchFirst(rgx.block_tic_block_open)) {
       /+ tic block open +/
       debug(block) {                             // block (tic) open
         writefln(
@@ -1804,7 +1803,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["block"] = TriState.on;
       type["tic_block"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_quote_open)) {
+    } else if (line.matchFirst(rgx.block_tic_quote_open)) {
       /+ tic quote open +/
       debug(quote) {                             // quote (tic) open
         writefln(
@@ -1815,7 +1814,7 @@ template SiSUdocAbstraction() {
       type["blocks"] = TriState.on;
       type["quote"] = TriState.on;
       type["tic_quote"] = TriState.on;
-    } else if (matchFirst(line, rgx.block_tic_table_open)) {
+    } else if (line.matchFirst(rgx.block_tic_table_open)) {
       /+ tic table open +/
       debug(table) {                             // table (tic) open
         writefln(
@@ -1840,7 +1839,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_code"] == TriState.on) {
-      if (matchFirst(line, rgx.block_curly_code_close)) {
+      if (line.matchFirst(rgx.block_curly_code_close)) {
         debug(code) {                                    // code (curly) close
           writeln(line);
         }
@@ -1854,7 +1853,7 @@ template SiSUdocAbstraction() {
         an_object[an_object_key] ~= line ~= "\n";        // code (curly) line
       }
     } else if (type["tic_code"] == TriState.on) {
-      if (matchFirst(line, rgx.block_tic_close)) {
+      if (line.matchFirst(rgx.block_tic_close)) {
         debug(code) {                                    // code (tic) close
           writeln(line);
         }
@@ -1901,7 +1900,7 @@ template SiSUdocAbstraction() {
     mixin SiSUbiblio;
     auto jsn = BibJsnStr();
     auto rgx = Rgx();
-    if (matchFirst(line, rgx.heading_biblio)) {
+    if (line.matchFirst(rgx.heading_biblio)) {
       type["biblio_section"] = TriState.on;
       type["blurb_section"] = State.off;
       type["glossary_section"] = State.off;
@@ -1936,16 +1935,16 @@ template SiSUdocAbstraction() {
         writeln("?? 2. ERROR ", biblio_entry_str_json, "??");
         biblio_entry_str_json = "";
       }
-    } else if (matchFirst(line, rgx.biblio_tags)) {
+    } else if (line.matchFirst(rgx.biblio_tags)) {
       debug(biblioblock) {
         writeln(line);
       }
-      auto bt = match(line, rgx.biblio_tags);
+      auto bt = line.match(rgx.biblio_tags);
       bib_entry = State.off;
-      st=to!string(bt.captures[1]);
-      auto header_tag_value=to!string(bt.captures[2]);
+      st = bt.captures[1].to!string;
+      auto header_tag_value=(bt.captures[2]).to!string;
       JSONValue j = parseJSON(biblio_entry_str_json);
-      biblio_tag_name = (match(st, rgx.biblio_abbreviations))
+      biblio_tag_name = (st.match(rgx.biblio_abbreviations))
         ? (biblio_tag_map(st))
         : st;
       j.object[biblio_tag_name] = header_tag_value;
@@ -1956,11 +1955,11 @@ template SiSUdocAbstraction() {
       switch (biblio_tag_name) {
       case "author_raw": // author_arr author (fn sn)
         j["author_arr"] =
-          split(header_tag_value, rgx.arr_delimiter);
+         header_tag_value.split(rgx.arr_delimiter);
         string tmp;
         biblioAuthorLoop:
         foreach (au; j["author_arr"].array) {
-          if (auto x = match(au.str, rgx.name_delimiter)) {
+          if (auto x = au.str.match(rgx.name_delimiter)) {
             tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
           } else {
             tmp ~= au.str;
@@ -1971,11 +1970,11 @@ template SiSUdocAbstraction() {
         goto default;
       case "editor_raw": // editor_arr editor (fn sn)
         j["editor_arr"] =
-          split(header_tag_value, rgx.arr_delimiter);
+          header_tag_value.split(rgx.arr_delimiter);
         string tmp;
         biblioEditorLoop:
         foreach (ed; j["editor_arr"].array) {
-          if (auto x = match(ed.str, rgx.name_delimiter)) {
+          if (auto x = ed.str.match(rgx.name_delimiter)) {
             tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
           } else {
             tmp ~= ed.str;
@@ -1998,7 +1997,7 @@ template SiSUdocAbstraction() {
           j[biblio_tag_name]
         );
       }
-      if ((match(line, rgx.comment))) {
+      if (line.match(rgx.comment)) {
         writeln("ERROR", line, "COMMENT");
         writeln("ERROR", s, "%%");
       }
@@ -2026,7 +2025,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_group"] == State.on) {
-      if (matchFirst(line, rgx.block_curly_group_close)) {
+      if (line.matchFirst(rgx.block_curly_group_close)) {
         debug(group) {
           writeln(line);
         }
@@ -2040,7 +2039,7 @@ template SiSUdocAbstraction() {
         an_object[an_object_key] ~= line ~= "\n";   // build group array (or string)
       }
     } else if (type["tic_group"] == TriState.on) {
-      if (matchFirst(line, rgx.block_tic_close)) {
+      if (line.matchFirst(rgx.block_tic_close)) {
         debug(group) {
           writeln(line);
         }
@@ -2067,7 +2066,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_block"] == TriState.on) {
-      if (matchFirst(line, rgx.block_curly_block_close)) {
+      if (line.matchFirst(rgx.block_curly_block_close)) {
         debug(block) {                             // block (curly) close
           writeln(line);
         }
@@ -2081,7 +2080,7 @@ template SiSUdocAbstraction() {
         an_object[an_object_key] ~= line ~= "\n";   // build block array (or string)
       }
     } else if (type["tic_block"] == TriState.on) {
-      if (matchFirst(line, rgx.block_tic_close)) {
+      if (line.matchFirst(rgx.block_tic_close)) {
         debug(block) {
           writeln(line);
         }
@@ -2114,7 +2113,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_poem"] == TriState.on) {
-      if (matchFirst(line, rgx.block_curly_poem_close)) {
+      if (line.matchFirst(rgx.block_curly_poem_close)) {
         an_object[an_object_key]="verse";
         debug(poem) {                               // poem (curly) close
           writefln(
@@ -2150,7 +2149,7 @@ template SiSUdocAbstraction() {
           comp_obj_block.is_of                      = "block";
           comp_obj_block.is_a                       = "verse";
           comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
           comp_obj_block.text                       = an_object["substantive"];
           comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2161,7 +2160,7 @@ template SiSUdocAbstraction() {
           ++cntr;
         }
         obj_cite_number_poem["end"] =
-          to!string(obj_cite_number);
+          obj_cite_number.to!string;
         type["blocks"] = TriState.closing;
         type["poem"] = TriState.closing;
         type["curly_poem"] = TriState.off;
@@ -2171,7 +2170,7 @@ template SiSUdocAbstraction() {
           obj_cite_number =
             ocn_emit(type["ocn_status"]);
           type["verse_new"] = State.off;
-        } else if (matchFirst(line, rgx.newline_eol_delimiter_only)) {
+        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
           verse_line = TriState.off;
           type["verse_new"] = State.on;
         }
@@ -2204,7 +2203,7 @@ template SiSUdocAbstraction() {
           comp_obj_block.is_of                      = "block";
           comp_obj_block.is_a                       = "verse";
           comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
           comp_obj_block.text                       = an_object["substantive"];
           comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2216,7 +2215,7 @@ template SiSUdocAbstraction() {
         }
       }
     } else if (type["tic_poem"] == TriState.on) {
-      if (auto m = matchFirst(line, rgx.block_tic_close)) { // tic_poem_close
+      if (auto m = line.matchFirst(rgx.block_tic_close)) { // tic_poem_close
         an_object[an_object_key]="verse";
         debug(poem) {                                       // poem (curly) close
           writefln(
@@ -2243,13 +2242,13 @@ template SiSUdocAbstraction() {
           comp_obj_block.is_of                      = "block";
           comp_obj_block.is_a                       = "verse";
           comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
           comp_obj_block.text                       = an_object["substantive"];
           comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
           comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
           the_document_body_section                 ~= comp_obj_block;
-          obj_cite_number_poem["end"]               = to!string(obj_cite_number);
+          obj_cite_number_poem["end"]               = obj_cite_number.to!string;
           object_reset(an_object);
           processing.remove("verse");
           ++cntr;
@@ -2263,7 +2262,7 @@ template SiSUdocAbstraction() {
           obj_cite_number =
             ocn_emit(type["ocn_status"]);
           type["verse_new"] = State.off;
-        } else if (matchFirst(line, rgx.newline_eol_delimiter_only)) {
+        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
           type["verse_new"] = State.on;
           verse_line = TriState.off;
         }
@@ -2297,7 +2296,7 @@ template SiSUdocAbstraction() {
           comp_obj_block.is_of                      = "block";
           comp_obj_block.is_a                       = "verse";
           comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
           comp_obj_block.text                       = an_object["substantive"];
           comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
           comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2322,7 +2321,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_quote"] == TriState.on) {
-      if (matchFirst(line, rgx.block_curly_quote_close)) {
+      if (line.matchFirst(rgx.block_curly_quote_close)) {
         debug(quote) {                              // quote (curly) close
           writeln(line);
         }
@@ -2336,7 +2335,7 @@ template SiSUdocAbstraction() {
         an_object[an_object_key] ~= line ~= "\n";   // build quote array (or string)
       }
     } else if (type["tic_quote"] == TriState.on) {
-      if (matchFirst(line, rgx.block_tic_close)) {
+      if (line.matchFirst(rgx.block_tic_close)) {
         debug(quote) {                              // quote (tic) close
           writeln(line);
         }
@@ -2363,7 +2362,7 @@ template SiSUdocAbstraction() {
     }
     auto rgx = Rgx();
     if (type["curly_table"] == TriState.on) {
-      if (matchFirst(line, rgx.block_curly_table_close)) {
+      if (line.matchFirst(rgx.block_curly_table_close)) {
         debug(table) {                           // table (curly) close
           writeln(line);
         }
@@ -2377,7 +2376,7 @@ template SiSUdocAbstraction() {
         an_object[an_object_key] ~= line ~= "\n";           // build table array (or string)
       }
     } else if (type["tic_table"] == TriState.on) {
-      if (matchFirst(line, rgx.block_tic_close)) {
+      if (line.matchFirst(rgx.block_tic_close)) {
         debug(table) {                           // table (tic) close
           writeln(line);
         }
@@ -2445,7 +2444,7 @@ template SiSUdocAbstraction() {
       comp_obj_block.is_of                      = "block";
       comp_obj_block.is_a                       = "group";
       comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
       comp_obj_block.text                       = an_object["substantive"];
       comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2485,7 +2484,7 @@ template SiSUdocAbstraction() {
       comp_obj_block.is_of                      = "block";
       comp_obj_block.is_a                       = "block";
       comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
       comp_obj_block.text                       = an_object["substantive"];
       comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2526,7 +2525,7 @@ template SiSUdocAbstraction() {
       comp_obj_code.is_of                       = "block";
       comp_obj_code.is_a                        = "code";
       comp_obj_code.ocn                         = obj_cite_number;
-      comp_obj_code.obj_cite_number             = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+      comp_obj_code.obj_cite_number             = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
       comp_obj_code.text                        = an_object["substantive"];
       comp_obj_code.inline_notes_reg            = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_code.inline_notes_star           = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2598,7 +2597,7 @@ template SiSUdocAbstraction() {
       comp_obj_block.is_of                      = "block";
       comp_obj_block.is_a                       = "quote";
       comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
       comp_obj_block.text                       = an_object["substantive"];
       comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2639,7 +2638,7 @@ template SiSUdocAbstraction() {
       comp_obj_block.is_of                      = "block";
       comp_obj_block.is_a                       = "table";
       comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
+      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
       comp_obj_block.text                       = an_object["substantive"];
       comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
       comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
@@ -2667,20 +2666,20 @@ template SiSUdocAbstraction() {
       static assert(is(typeof(opt_action_bool) == bool[string]));
     }
     auto rgx = Rgx();
-    if (auto m = match(line, rgx.book_index)) {
+    if (auto m = line.match(rgx.book_index)) {
       /+ match book_index +/
       debug(bookindexmatch) {                       // book index
         writefln(
           "* [bookindex] %s\n",
-          to!string(m.captures[1]),
+          m.captures[1].to!string,
         );
       }
-      an_object["bookindex_nugget"] = to!string(m.captures[1]);
-    } else if (auto m = match(line, rgx.book_index_open))  {
+      an_object["bookindex_nugget"] = m.captures[1].to!string;
+    } else if (auto m = line.match(rgx.book_index_open))  {
       /+ match open book_index +/
       type["book_index"] = State.on;
       if (opt_action_bool["backmatter"] && opt_action_bool["section_bookindex"]) {
-        book_idx_tmp = to!string(m.captures[1]);
+        book_idx_tmp = m.captures[1].to!string;
         debug(bookindexmatch) {                       // book index
           writefln(
             "* [bookindex] %s\n",
@@ -2690,11 +2689,11 @@ template SiSUdocAbstraction() {
       }
     } else if (type["book_index"] == State.on )  {
       /+ book_index flag set +/
-      if (auto m = match(line, rgx.book_index_close))  {
+      if (auto m = line.match(rgx.book_index_close))  {
         type["book_index"] = State.off;
         if (opt_action_bool["backmatter"]
         && opt_action_bool["section_bookindex"]) {
-          an_object["bookindex_nugget"] = book_idx_tmp ~ to!string(m.captures[1]);
+          an_object["bookindex_nugget"] = book_idx_tmp ~ m.captures[1].to!string;
           debug(bookindexmatch) {                     // book index
             writefln(
               "* [bookindex] %s\n",
@@ -2733,9 +2732,8 @@ template SiSUdocAbstraction() {
         writeln(dochead_make_identify_unmarked_headings);
       }
       char[][] make_headings_spl =
-        split(
-          cast(char[]) dochead_make_identify_unmarked_headings,
-          rgx.make_heading_delimiter);
+        (cast(char[]) dochead_make_identify_unmarked_headings)
+          .split(rgx.make_heading_delimiter);
       debug(headingsfound) {
         writeln(make_headings_spl.length);
         writeln(make_headings_spl);
@@ -2744,7 +2742,7 @@ template SiSUdocAbstraction() {
       case 7 :
         if (!empty(make_headings_spl[6])) {
           heading_match_str["h_4"] =
-            "^(" ~ to!string(make_headings_spl[6]) ~ ")";
+            "^(" ~ make_headings_spl[6].to!string ~ ")";
           heading_match_rgx["h_4"] =
             regex(heading_match_str["h_4"]);
         }
@@ -2752,7 +2750,7 @@ template SiSUdocAbstraction() {
       case 6 :
         if (!empty(make_headings_spl[5])) {
           heading_match_str["h_3"] =
-            "^(" ~ to!string(make_headings_spl[5]) ~ ")";
+            "^(" ~ make_headings_spl[5].to!string ~ ")";
           heading_match_rgx["h_3"] =
             regex(heading_match_str["h_3"]);
         }
@@ -2760,7 +2758,7 @@ template SiSUdocAbstraction() {
       case 5 :
         if (!empty(make_headings_spl[4])) {
           heading_match_str["h_2"] =
-            "^(" ~ to!string(make_headings_spl[4]) ~ ")";
+            "^(" ~ make_headings_spl[4].to!string ~ ")";
           heading_match_rgx["h_2"] =
             regex(heading_match_str["h_2"]);
         }
@@ -2768,7 +2766,7 @@ template SiSUdocAbstraction() {
       case 4 :
         if (!empty(make_headings_spl[3])) {
           heading_match_str["h_1"] =
-            "^(" ~ to!string(make_headings_spl[3]) ~ ")";
+            "^(" ~ make_headings_spl[3].to!string ~ ")";
           heading_match_rgx["h_1"] =
             regex(heading_match_str["h_1"]);
         }
@@ -2776,7 +2774,7 @@ template SiSUdocAbstraction() {
       case 3 :
         if (!empty(make_headings_spl[2])) {
           heading_match_str["h_D"] =
-            "^(" ~ to!string(make_headings_spl[2]) ~ ")";
+            "^(" ~ make_headings_spl[2].to!string ~ ")";
           heading_match_rgx["h_D"] =
             regex(heading_match_str["h_D"]);
         }
@@ -2784,7 +2782,7 @@ template SiSUdocAbstraction() {
       case 2 :
         if (!empty(make_headings_spl[1])) {
           heading_match_str["h_C"] =
-            "^(" ~ to!string(make_headings_spl[1]) ~ ")";
+            "^(" ~ make_headings_spl[1].to!string ~ ")";
           heading_match_rgx["h_C"] =
             regex(heading_match_str["h_C"]);
         }
@@ -2792,7 +2790,7 @@ template SiSUdocAbstraction() {
       case 1 :
         if (!empty(make_headings_spl[0])) {
           heading_match_str["h_B"] =
-            "^(" ~ to!string(make_headings_spl[0]) ~ ")";
+            "^(" ~ make_headings_spl[0].to!string ~ ")";
           heading_match_rgx["h_B"] =
             regex(heading_match_str["h_B"]);
         }
@@ -2821,43 +2819,43 @@ template SiSUdocAbstraction() {
     && ((type["para"] == State.off)
     && (type["heading"] == State.off))) {
       /+ heading make set +/
-      if (matchFirst(line, heading_match_rgx["h_B"])) {
+      if (line.matchFirst(heading_match_rgx["h_B"])) {
         line = "B~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_C"])) {
+      if (line.matchFirst(heading_match_rgx["h_C"])) {
         line = "C~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_D"])) {
+      if (line.matchFirst(heading_match_rgx["h_D"])) {
         line = "D~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_1"])) {
+      if (line.matchFirst(heading_match_rgx["h_1"])) {
         line = "1~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_2"])) {
+      if (line.matchFirst(heading_match_rgx["h_2"])) {
         line = "2~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_3"])) {
+      if (line.matchFirst(heading_match_rgx["h_3"])) {
         line = "3~ " ~ line;
         debug(headingsfound) {
           writeln(line);
         }
       }
-      if (matchFirst(line, heading_match_rgx["h_4"])) {
+      if (line.matchFirst(heading_match_rgx["h_4"])) {
         line = "4~ " ~ line;
         debug(headingsfound) {
           writeln(line);
@@ -2886,10 +2884,10 @@ template SiSUdocAbstraction() {
       static assert(is(typeof(dochead_meta_aa) == string[string][string]));
     }
     auto rgx = Rgx();
-    if (auto m = match(line, rgx.heading)) {
+    if (auto m = line.match(rgx.heading)) {
       /+ heading match +/
       type["heading"] = State.on;
-      if (match(line, rgx.heading_seg_and_above)) {
+      if (line.match(rgx.heading_seg_and_above)) {
         type["biblio_section"] = State.off;
         type["glossary_section"] = State.off;
         type["blurb_section"] = State.off;
@@ -2908,7 +2906,7 @@ template SiSUdocAbstraction() {
             dochead_meta_aa["creator"]["author"]);
         collapsed_lev["h0"] = 0;
         an_object["lev_collapsed_number"] =
-          to!string(collapsed_lev["h0"]);
+          collapsed_lev["h0"].to!string;
         lv["lv"] = DocStructMarkupHeading.h_sect_A;
         ++lv["h0"];
         lv["h1"] = State.off;
@@ -2922,7 +2920,7 @@ template SiSUdocAbstraction() {
       case "B":
         collapsed_lev["h1"] = collapsed_lev["h0"] + 1;
         an_object["lev_collapsed_number"] =
-          to!string(collapsed_lev["h1"]);
+          collapsed_lev["h1"].to!string;
         lv["lv"] = DocStructMarkupHeading.h_sect_B;
         ++lv["h1"];
         lv["h2"] = State.off;
@@ -2935,7 +2933,7 @@ template SiSUdocAbstraction() {
       case "C":
         collapsed_lev["h2"] = collapsed_lev["h1"] + 1;
         an_object["lev_collapsed_number"] =
-          to!string(collapsed_lev["h2"]);
+          collapsed_lev["h2"].to!string;
         lv["lv"] = DocStructMarkupHeading.h_sect_C;
         ++lv["h2"];
         lv["h3"] = State.off;
@@ -2947,7 +2945,7 @@ template SiSUdocAbstraction() {
       case "D":
         collapsed_lev["h3"] = collapsed_lev["h2"] + 1;
         an_object["lev_collapsed_number"] =
-          to!string(collapsed_lev["h3"]);
+          collapsed_lev["h3"].to!string;
         lv["lv"] = DocStructMarkupHeading.h_sect_D;
         ++lv["h3"];
         lv["h4"] = State.off;
@@ -2966,7 +2964,7 @@ template SiSUdocAbstraction() {
           collapsed_lev["h4"] = collapsed_lev["h0"] + 1;
         }
         an_object["lev_collapsed_number"] =
-          to!string(collapsed_lev["h4"]);
+          collapsed_lev["h4"].to!string;
         lv["lv"] = DocStructMarkupHeading.h_text_1;
         ++lv["h4"];
         lv["h5"] = State.off;
@@ -2976,11 +2974,11 @@ template SiSUdocAbstraction() {
       case "2":
         if (lv["h5"] > State.off) {
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h5"]);
+            collapsed_lev["h5"].to!string;
         } else if (lv["h4"] > State.off) {
           collapsed_lev["h5"] = collapsed_lev["h4"] + 1;
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h5"]);
+            collapsed_lev["h5"].to!string;
         }
         lv["lv"] = DocStructMarkupHeading.h_text_2;
         ++lv["h5"];
@@ -2990,11 +2988,11 @@ template SiSUdocAbstraction() {
       case "3":
         if (lv["h6"] > State.off) {
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h6"]);
+            collapsed_lev["h6"].to!string;
         } else if (lv["h5"] > State.off) {
           collapsed_lev["h6"] = collapsed_lev["h5"] + 1;
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h6"]);
+            collapsed_lev["h6"].to!string;
         }
         lv["lv"] = DocStructMarkupHeading.h_text_3;
         ++lv["h6"];
@@ -3003,20 +3001,20 @@ template SiSUdocAbstraction() {
       case "4":
         if (lv["h7"] > State.off) {
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h7"]);
+            collapsed_lev["h7"].to!string;
         } else if (lv["h6"] > State.off) {
           collapsed_lev["h7"] = collapsed_lev["h6"] + 1;
           an_object["lev_collapsed_number"] =
-            to!string(collapsed_lev["h7"]);
+            collapsed_lev["h7"].to!string;
         }
         lv["lv"] = DocStructMarkupHeading.h_text_4;
         ++lv["h7"];
         goto default;
       default:
-        an_object["lev_markup_number"] = to!string(lv["lv"]);
+        an_object["lev_markup_number"] = lv["lv"].to!string;
       }
       debug(heading) {                         // heading
-        writeln(strip(line));
+        writeln(line.strip);
       }
     }
   }
@@ -3049,31 +3047,31 @@ template SiSUdocAbstraction() {
         "base_position" : 0,
       ];
       bullet = false;
-      if (auto m = matchFirst(line, rgx.para_indent)) {
+      if (auto m = line.matchFirst(rgx.para_indent)) {
         debug(paraindent) {                    // para indent
           writeln(line);
         }
-        indent["hang_position"] = to!int(m.captures[1]);
+        indent["hang_position"] = (m.captures[1]).to!int;
         indent["base_position"] = 0;
-      } else if (matchFirst(line, rgx.para_bullet)) {
+      } else if (line.matchFirst(rgx.para_bullet)) {
         debug(parabullet) {                    // para bullet
           writeln(line);
         }
         bullet = true;
-      } else if (auto m = matchFirst(line, rgx.para_indent_hang)) {
+      } else if (auto m = line.matchFirst(rgx.para_indent_hang)) {
         debug(paraindenthang) {                // para indent hang
           writeln(line);
         }
         indent=[
-          "hang_position" : to!int(m.captures[1]),
-          "base_position" : to!int(m.captures[2]),
+          "hang_position" : (m.captures[1]).to!int,
+          "base_position" : (m.captures[2]).to!int,
         ];
-      } else if (auto m = matchFirst(line, rgx.para_bullet_indent)) {
+      } else if (auto m = line.matchFirst(rgx.para_bullet_indent)) {
         debug(parabulletindent) {              // para bullet indent
           writeln(line);
         }
         indent=[
-          "hang_position" : to!int(m.captures[1]),
+          "hang_position" : (m.captures[1]).to!int,
           "base_position" : 0,
         ];
         bullet = true;
@@ -3085,7 +3083,7 @@ template SiSUdocAbstraction() {
     return ref T  textline,
   ) {
     auto rgx = Rgx();
-    if (match(textline, rgx.inline_faces_line)) {
+    if (textline.match(rgx.inline_faces_line)) {
       textline = (textline)
         .replaceFirst(rgx.inline_emphasis_line,   ("*{$1}*$2"))
         .replaceFirst(rgx.inline_bold_line,       ("!{$1}!$2"))
@@ -3134,9 +3132,9 @@ template SiSUdocAbstraction() {
         static assert(is(typeof(obj_txt_in) == string));
       }
       /+ url matched +/
-      if (match(obj_txt_in, rgx.inline_url_generic)) {
+      if (obj_txt_in.match(rgx.inline_url_generic)) {
         /+ link: naked url: http://url +/
-        if (match(obj_txt_in, rgx.inline_link_naked_url)) {
+        if (obj_txt_in.match(rgx.inline_link_naked_url)) {
           obj_txt_in = (obj_txt_in).replaceAll(
               rgx.inline_link_naked_url,
               ("$1"
@@ -3150,7 +3148,7 @@ template SiSUdocAbstraction() {
            maps to:
              { link which includes url as footnote }http://url~{ { http://url }http://url }~
         +/
-        if (match(obj_txt_in, rgx.inline_link_endnote_url_helper)) {
+        if (obj_txt_in.match(rgx.inline_link_endnote_url_helper)) {
           obj_txt_in = (obj_txt_in).replaceAll(
             rgx.inline_link_endnote_url_helper_punctuated,
             (mkup.lnk_o ~ "$1" ~ mkup.lnk_c
@@ -3171,7 +3169,7 @@ template SiSUdocAbstraction() {
         /+ link with regular markup:
            { linked text or image }http://url
         +/
-        if (match(obj_txt_in, rgx.inline_link_markup_regular)) {
+        if (obj_txt_in.match(rgx.inline_link_markup_regular)) {
           obj_txt_in = (obj_txt_in).replaceAll(
             rgx.inline_link_markup_regular,
             ("$1"
@@ -3197,8 +3195,8 @@ template SiSUdocAbstraction() {
       if (!(stage_reset_note_numbers) && reset_note_numbers) {
         stage_reset_note_numbers = true;
       }
-      if (match(obj_txt_in, rgx.inline_notes_al_gen)) {
-        if (auto m = matchAll(obj_txt_in, rgx.inline_text_and_note_al_)) {
+      if (obj_txt_in.match(rgx.inline_notes_al_gen)) {
+        if (auto m = obj_txt_in.matchAll(rgx.inline_text_and_note_al_)) {
           if (stage_reset_note_numbers) {
             n_foot = 0;
             n_foot_reg = 0;
@@ -3207,25 +3205,25 @@ template SiSUdocAbstraction() {
           }
           stage_reset_note_numbers = false;
           foreach(n; m) {
-            if (match(to!string(n.hit), rgx.inline_al_delimiter_open_symbol_star)) {
+            if (n.hit.to!string.match(rgx.inline_al_delimiter_open_symbol_star)) {
               flg_notes_star =  true;
               ++n_foot_sp_asterisk;
               asterisks_ = "*";
               n_foot=n_foot_sp_asterisk;
-              obj_txt_out ~= (to!string(n.hit)).replaceFirst(
+              obj_txt_out ~= n.hit.to!string.replaceFirst(
                 rgx.inline_al_delimiter_open_symbol_star,
                 (mkup.en_a_o ~ replicate(asterisks_, n_foot_sp_asterisk) ~ " ")
               ) ~ "\n";
-            } else if (match(to!string(n.hit), rgx.inline_al_delimiter_open_regular)) {
+            } else if (n.hit.to!string.match(rgx.inline_al_delimiter_open_regular)) {
               flg_notes_reg =  true;
               ++n_foot_reg;
               n_foot=n_foot_reg;
-              obj_txt_out ~= (to!string(n.hit)).replaceFirst(
+              obj_txt_out ~= n.hit.to!string.replaceFirst(
                 rgx.inline_al_delimiter_open_regular,
                 (mkup.en_a_o ~ to!string(n_foot) ~ " ")
               ) ~ "\n";
             } else {
-              obj_txt_out ~= to!string(n.hit) ~ "\n";
+              obj_txt_out ~= n.hit.to!string ~ "\n";
             }
           }
         }
@@ -3250,19 +3248,16 @@ template SiSUdocAbstraction() {
       bool urls = false;
       tail = "";
       /+ special endnotes +/
-      obj_txt_in = replaceAll(
-        obj_txt_in,
+      obj_txt_in = obj_txt_in.replaceAll(
         rgx.inline_notes_curly_sp_asterisk,
         (mkup.en_a_o ~ "*" ~ " $1" ~ mkup.en_a_c)
       );
-      obj_txt_in =
-        replaceAll(
-          obj_txt_in,
-          rgx.inline_notes_curly_sp_plus,
-          (mkup.en_a_o ~ "+" ~ " $1" ~ mkup.en_a_c)
-        );
+      obj_txt_in = obj_txt_in.replaceAll(
+        rgx.inline_notes_curly_sp_plus,
+        (mkup.en_a_o ~ "+" ~ " $1" ~ mkup.en_a_c)
+      );
       /+ url matched +/
-      if (match(obj_txt_in, rgx.inline_url)) {
+      if (obj_txt_in.match(rgx.inline_url)) {
         urls = true;
         obj_txt_in = url_links(obj_txt_in);
       }
@@ -3280,7 +3275,7 @@ template SiSUdocAbstraction() {
         }
       }
       auto t = tuple(
-        to!string(obj_txt_out),
+        obj_txt_out,
         ftn[1],
         ftn[2],
         urls,
@@ -3311,7 +3306,7 @@ template SiSUdocAbstraction() {
         writeln(__LINE__);
         writeln(obj_txt_in);
         writeln(__LINE__);
-        writeln(to!string(obj_txt["munge"]));
+        writeln(obj_txt["munge"].to!string);
       }
       return t;
     }
@@ -3332,7 +3327,7 @@ template SiSUdocAbstraction() {
         writeln(__LINE__);
         writeln(obj_txt_in);
         writeln(__LINE__);
-        writeln(to!string(obj_txt["munge"]));
+        writeln(obj_txt["munge"].to!string);
       }
       return t;
     }
@@ -3439,7 +3434,7 @@ template SiSUdocAbstraction() {
     }
     body {
       obj_txt["munge"] = obj_[obj_key_].dup;
-      obj_txt["munge"] = (match(obj_["is"], ctRegex!(`verse|code`)))
+      obj_txt["munge"] = (obj_["is"].match(ctRegex!(`verse|code`)))
       ? obj_txt["munge"]
       : strip(obj_txt["munge"]);
       static __gshared string[] anchor_tags_ = [];
@@ -3454,7 +3449,7 @@ template SiSUdocAbstraction() {
         // TODO WORK ON, you still need to ensure that level 1 anchor_tags are unique
         obj_txt["munge"]=_configured_auto_heading_numbering_and_segment_anchor_tags(obj_txt["munge"], obj_, dochead_make_aa);
         obj_txt["munge"]=_make_segment_anchor_tags_if_none_provided(obj_txt["munge"], obj_["lev"]);
-        if (auto m = match(obj_txt["munge"], rgx.heading_anchor_tag)) {
+        if (auto m = obj_txt["munge"].match(rgx.heading_anchor_tag)) {
           anchor_tag = m.captures[1];
           anchor_tags_ ~= anchor_tag;
         } else if (obj_["lev"] == "1") {
@@ -3516,7 +3511,7 @@ template SiSUdocAbstraction() {
      debug(asserts) {
        static assert(is(typeof(heading_toc_) == char[]));
      }
-     auto m = matchFirst(cast(char[]) heading_toc_, rgx.heading);
+     auto m = (cast(char[]) heading_toc_).matchFirst(rgx.heading);
      heading_toc_ = (m.post).replaceAll(
        rgx.inline_notes_curly_gen,
        "");
@@ -3549,10 +3544,10 @@ template SiSUdocAbstraction() {
       auto attrib="";
       string toc_txt_, subtoc_txt_;
       int[string] indent;
-      if (to!int(obj_["lev_markup_number"]) > 0) {
+      if (obj_["lev_markup_number"].to!int > 0) {
         indent=[
-          "hang_position" : to!int(obj_["lev_markup_number"]),
-          "base_position" : to!int(obj_["lev_markup_number"]),
+          "hang_position" : obj_["lev_markup_number"].to!int,
+          "base_position" : obj_["lev_markup_number"].to!int,
         ];
         toc_txt_ = format(
           "{ %s }#%s",
@@ -3569,7 +3564,7 @@ template SiSUdocAbstraction() {
         comp_obj_toc.indent_hang           = indent["hang_position"];
         comp_obj_toc.indent_base           = indent["base_position"];
         comp_obj_toc.bullet                = false;
-        comp_obj_toc.text                  = to!string(toc_txt_).strip;
+        comp_obj_toc.text                  = toc_txt_.to!string.strip;
         comp_obj_toc.inline_links          = true;
         the_table_of_contents_section["scroll"] ~= comp_obj_toc;
       } else {
@@ -3598,7 +3593,7 @@ template SiSUdocAbstraction() {
       comp_obj_toc.obj_cite_number       = "";
       comp_obj_toc.bullet                = false;
       comp_obj_toc.inline_links          = true;
-      switch (to!int(obj_["lev_markup_number"])) {
+      switch (obj_["lev_markup_number"].to!int) {
       case 0:
         indent=[
           "hang_position" : 0,
@@ -3608,14 +3603,14 @@ template SiSUdocAbstraction() {
         toc_txt_= munge.url_links(toc_txt_);
         comp_obj_toc.indent_hang             = indent["hang_position"];
         comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = to!string(toc_txt_).strip;
+        comp_obj_toc.text                    = toc_txt_.to!string.strip;
         comp_obj_toc.inline_links            = true;
         the_table_of_contents_section["seg"] ~= comp_obj_toc;
         break;
       case 1: .. case 3:
         indent=[
-          "hang_position" : to!int(obj_["lev_markup_number"]),
-          "base_position" : to!int(obj_["lev_markup_number"]),
+          "hang_position" : obj_["lev_markup_number"].to!int,
+          "base_position" : obj_["lev_markup_number"].to!int,
         ];
         toc_txt_ = format(
           "%s",
@@ -3624,7 +3619,7 @@ template SiSUdocAbstraction() {
         toc_txt_= munge.url_links(toc_txt_);
         comp_obj_toc.indent_hang             = indent["hang_position"];
         comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = to!string(toc_txt_).strip;
+        comp_obj_toc.text                    = toc_txt_.to!string.strip;
         comp_obj_toc.inline_links            = true;
         the_table_of_contents_section["seg"] ~= comp_obj_toc;
         break;
@@ -3639,12 +3634,12 @@ template SiSUdocAbstraction() {
         lev4_subtoc[segment_anchor_tag_that_object_belongs_to] = [];
         toc_txt_= munge.url_links(toc_txt_);
         indent=[
-          "hang_position" : to!int(obj_["lev_markup_number"]),
-          "base_position" : to!int(obj_["lev_markup_number"]),
+          "hang_position" : obj_["lev_markup_number"].to!int,
+          "base_position" : obj_["lev_markup_number"].to!int,
         ];
         comp_obj_toc.indent_hang             = indent["hang_position"];
         comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = to!string(toc_txt_).strip;
+        comp_obj_toc.text                    = toc_txt_.to!string.strip;
         comp_obj_toc.inline_links            = true;
         the_table_of_contents_section["seg"] ~= comp_obj_toc;
         break;
@@ -3663,15 +3658,15 @@ template SiSUdocAbstraction() {
           _anchor_tag,
         );
         lev4_subtoc[segment_anchor_tag_that_object_belongs_to]
-        ~= obj_["lev_markup_number"] ~ "~ " ~ to!string(subtoc_txt_).strip;
+        ~= obj_["lev_markup_number"] ~ "~ " ~ subtoc_txt_.to!string.strip;
         toc_txt_= munge.url_links(toc_txt_);
         indent=[
-          "hang_position" : to!int(obj_["lev_markup_number"]),
-          "base_position" : to!int(obj_["lev_markup_number"]),
+          "hang_position" : obj_["lev_markup_number"].to!int,
+          "base_position" : obj_["lev_markup_number"].to!int,
         ];
         comp_obj_toc.indent_hang             = indent["hang_position"];
         comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = to!string(toc_txt_).strip;
+        comp_obj_toc.text                    = toc_txt_.to!string.strip;
         comp_obj_toc.inline_links            = true;
         the_table_of_contents_section["seg"] ~= comp_obj_toc;
         break;
@@ -3703,7 +3698,7 @@ template SiSUdocAbstraction() {
         static __gshared string heading_number_auto_composite = "";
         if (heading_num_top_level==9) {
           if (dochead_make_aa["make"]["num_depth"].length > 0) {
-            heading_num_depth = to!uint(dochead_make_aa["make"]["num_depth"]);
+            heading_num_depth = dochead_make_aa["make"]["num_depth"].to!uint;
           }
           switch (dochead_make_aa["make"]["num_top"]) {
           case "A":
@@ -3736,7 +3731,7 @@ template SiSUdocAbstraction() {
         /+ num_depth minimum 0 (1.) default 2 (1.1.1) max 3 (1.1.1.1) implement +/
         if (
           heading_num_top_level
-          > to!uint(obj_["lev_markup_number"])
+          > obj_["lev_markup_number"].to!uint
         ) {
           heading_num_0 = 0;
           heading_num_1 = 0;
@@ -3744,7 +3739,7 @@ template SiSUdocAbstraction() {
           heading_num_3 = 0;
         } else if (
           heading_num_top_level
-          == to!uint(obj_["lev_markup_number"])
+          == obj_["lev_markup_number"].to!uint
         ) {
           heading_num_0 ++;
           heading_num_1 = 0;
@@ -3752,54 +3747,54 @@ template SiSUdocAbstraction() {
           heading_num_3 = 0;
         } else if (
           heading_num_top_level
-          == (to!uint(obj_["lev_markup_number"]) - 1)
+          == (obj_["lev_markup_number"].to!uint - 1)
         ) {
           heading_num_1 ++;
           heading_num_2 = 0;
           heading_num_3 = 0;
         } else if (
           heading_num_top_level
-          == (to!uint(obj_["lev_markup_number"]) - 2)
+          == (obj_["lev_markup_number"].to!uint - 2)
         ) {
           heading_num_2 ++;
           heading_num_3 = 0;
         } else if (
           heading_num_top_level
-          == (to!uint(obj_["lev_markup_number"]) - 3)
+          == (obj_["lev_markup_number"].to!uint - 3)
         ) {
           heading_num_3 ++;
         }
         if (heading_num_3 > 0) {
           heading_number_auto_composite =
             (heading_num_depth == 3)
-            ? ( to!string(heading_num_0) ~ "."
-                ~ to!string(heading_num_1) ~ "."
-                ~ to!string(heading_num_2) ~ "."
-                ~ to!string(heading_num_3)
+            ? ( heading_num_0.to!string ~ "."
+                ~ heading_num_1.to!string ~ "."
+                ~ heading_num_2.to!string ~ "."
+                ~ heading_num_3.to!string
               )
             : "";
         } else if (heading_num_2 > 0) {
           heading_number_auto_composite =
             ((heading_num_depth >= 2)
             && (heading_num_depth <= 3))
-            ?  ( to!string(heading_num_0) ~ "."
-                 ~ to!string(heading_num_1) ~ "."
-                 ~ to!string(heading_num_2)
+            ?  ( heading_num_0.to!string ~ "."
+                 ~ heading_num_1.to!string ~ "."
+                 ~ heading_num_2.to!string
                )
             : "";
         } else if (heading_num_1 > 0) {
           heading_number_auto_composite =
             ((heading_num_depth >= 1)
             && (heading_num_depth <= 3))
-            ? ( to!string(heading_num_0) ~ "."
-                 ~ to!string(heading_num_1)
+            ? ( heading_num_0.to!string ~ "."
+                 ~ heading_num_1.to!string
                )
             : "";
         } else if (heading_num_0 > 0) {
           heading_number_auto_composite =
             ((heading_num_depth >= 0)
             && (heading_num_depth <= 3))
-            ?  (to!string(heading_num_0))
+            ?  (heading_num_0.to!string)
             : "";
         } else {
           heading_number_auto_composite = "";
@@ -3807,7 +3802,7 @@ template SiSUdocAbstraction() {
         debug(heading_number_auto) {
           writeln(heading_number_auto_composite);
         }
-        if (!(match(munge_, rgx.heading_anchor_tag))
+        if (!(munge_.match(rgx.heading_anchor_tag))
         && !empty(heading_number_auto_composite)) {
           munge_=(munge_)
           .replaceFirst(rgx.heading,
@@ -3825,13 +3820,13 @@ template SiSUdocAbstraction() {
         static assert(is(typeof(munge_) == string));
         static assert(is(typeof(lev_)   == string));
       }
-      if (!(match(munge_, rgx.heading_anchor_tag))) { // if (anchor_tags_.length == 0) {
-        if (match(munge_, rgx.heading_identify_anchor_tag)) {
-          if (auto m = match(munge_, rgx.heading_extract_named_anchor_tag)) {
+      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)) {
             munge_=(munge_).replaceFirst(
               rgx.heading_marker_missing_tag,
-              "$1~" ~ toLower(m.captures[1]) ~ "_"  ~ m.captures[2] ~ " ");
-          } else if (auto m = match(munge_, rgx.heading_extract_unnamed_anchor_tag)) {
+              "$1~" ~ m.captures[1].toLower ~ "_"  ~ m.captures[2] ~ " ");
+          } else if (auto m = munge_.match(rgx.heading_extract_unnamed_anchor_tag)) {
             munge_=(munge_).replaceFirst(
               rgx.heading_marker_missing_tag,
               "$1~" ~ "s" ~ m.captures[1] ~ " ");
@@ -3841,7 +3836,7 @@ template SiSUdocAbstraction() {
           heading_num_lev1 ++;
           munge_=(munge_).replaceFirst(
             rgx.heading_marker_missing_tag,
-            "$1~" ~ "x" ~ to!string(heading_num_lev1) ~ " ");
+            "$1~" ~ "x" ~ heading_num_lev1.to!string ~ " ");
         }
       }
       return munge_;
@@ -3972,22 +3967,22 @@ template SiSUdocAbstraction() {
       }
     }
     body {
-      if (matchFirst(obj_txt_in, rgx.para_bullet)) {
+      if (obj_txt_in.matchFirst(rgx.para_bullet)) {
         _obj_attributes =" \"bullet\": \"true\","
         ~ " \"indent_hang\": 0,"
         ~ " \"indent_base\": 0,";
-      } else if (auto m = matchFirst(obj_txt_in, rgx.para_bullet_indent)) {
+      } else if (auto m = obj_txt_in.matchFirst(rgx.para_bullet_indent)) {
         _obj_attributes =" \"bullet\": \"true\","
-        ~ " \"indent_hang\": " ~ to!string(m.captures[1]) ~ ","
-        ~ " \"indent_base\": " ~ to!string(m.captures[1]) ~ ",";
-      } else if (auto m = matchFirst(obj_txt_in, rgx.para_indent_hang)) {
+        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
+        ~ " \"indent_base\": " ~ m.captures[1].to!string ~ ",";
+      } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent_hang)) {
         _obj_attributes =" \"bullet\": \"false\","
-        ~ " \"indent_hang\": " ~ to!string(m.captures[1]) ~ ","
-        ~ " \"indent_base\": " ~  to!string(m.captures[2]) ~ ",";
-      } else if (auto m = matchFirst(obj_txt_in, rgx.para_indent)) {
+        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
+        ~ " \"indent_base\": " ~  m.captures[2].to!string ~ ",";
+      } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent)) {
         _obj_attributes =" \"bullet\": \"false\","
-        ~ " \"indent_hang\": " ~ to!string(m.captures[1]) ~ ","
-        ~ " \"indent_base\": " ~ to!string(m.captures[1]) ~ ",";
+        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
+        ~ " \"indent_base\": " ~ m.captures[1].to!string ~ ",";
       } else {
         _obj_attributes =" \"bullet\": \"false\","
         ~ " \"indent_hang\": 0,"
@@ -4172,7 +4167,7 @@ template SiSUdocAbstraction() {
         if (!bookindex_section.empty) {
           writeln(
             "* [bookindex] ",
-            "[", to!string(obj_cite_number), ": ", segment_anchor_tag, "] ", bookindex_section
+            "[", obj_cite_number.to!string, ": ", segment_anchor_tag, "] ", bookindex_section
           );
         }
       }
@@ -4181,41 +4176,39 @@ template SiSUdocAbstraction() {
       auto rgx = Rgx();
       if (!bookindex_section.empty) {
         auto bi_main_terms_split_arr =
-          split(bookindex_section, rgx.bi_main_terms_split);
+          bookindex_section.split(rgx.bi_main_terms_split);
         foreach (bi_main_terms_content; bi_main_terms_split_arr) {
           auto bi_main_term_and_rest =
-            split(bi_main_terms_content, rgx.bi_main_term_plus_rest_split);
-          if (auto m = match(
-            bi_main_term_and_rest[0],
+            bi_main_terms_content.split(rgx.bi_main_term_plus_rest_split);
+          if (auto m = bi_main_term_and_rest[0].match(
             rgx.bi_term_and_obj_cite_numbers_match)
           ) {
-            main_term = strip(m.captures[1]);
-            obj_cite_number_offset = to!int(m.captures[2]);
+            main_term = m.captures[1].strip;
+            obj_cite_number_offset = m.captures[2].to!int;
             obj_cite_number_endpoint=(obj_cite_number + obj_cite_number_offset);
-            obj_cite_numbers ~= (to!string(obj_cite_number) ~ "-" ~ to!string(obj_cite_number_endpoint)
+            obj_cite_numbers ~= (obj_cite_number.to!string ~ "-" ~ to!string(obj_cite_number_endpoint)
             ~ ":" ~ segment_anchor_tag);
           } else {
-            main_term = strip(bi_main_term_and_rest[0]);
-            obj_cite_numbers ~= to!string(obj_cite_number)
+            main_term = bi_main_term_and_rest[0].strip;
+            obj_cite_numbers ~= obj_cite_number.to!string
             ~ ":" ~ segment_anchor_tag;
           }
           bi[main_term]["_a"] ~= obj_cite_numbers;
           obj_cite_numbers=null;
           if (bi_main_term_and_rest.length > 1) {
             auto bi_sub_terms_split_arr =
-              split(
-                bi_main_term_and_rest[1],
+              bi_main_term_and_rest[1].split(
                 rgx.bi_sub_terms_plus_obj_cite_number_offset_split
               );
             foreach (sub_terms_bits; bi_sub_terms_split_arr) {
-              if (auto m = match(sub_terms_bits, rgx.bi_term_and_obj_cite_numbers_match)) {
-                sub_term = strip(m.captures[1]);
-                obj_cite_number_offset = to!int(m.captures[2]);
+              if (auto m = sub_terms_bits.match(rgx.bi_term_and_obj_cite_numbers_match)) {
+                sub_term = m.captures[1].strip;
+                obj_cite_number_offset = m.captures[2].to!int;
                 obj_cite_number_endpoint=(obj_cite_number + obj_cite_number_offset);
-                obj_cite_numbers ~= (to!string(obj_cite_number) ~ " - " ~ to!string(obj_cite_number_endpoint)
+                obj_cite_numbers ~= (obj_cite_number.to!string ~ " - " ~ to!string(obj_cite_number_endpoint)
                 ~ ":" ~ segment_anchor_tag);
               } else {
-                sub_term = strip(sub_terms_bits);
+                sub_term = sub_terms_bits.strip;
                 obj_cite_numbers ~= to!string(obj_cite_number)
                 ~ ":" ~ segment_anchor_tag;
               }
@@ -4371,7 +4364,7 @@ template SiSUdocAbstraction() {
           bi_tmp_seg = "!{" ~ mainkey ~ "}! ";
           auto bkidx_lnk_seg(string locs) {
             string markup = "";
-            if (auto m = matchFirst(locs, rgx.book_index_go_seg)) {
+            if (auto m = locs.matchFirst(rgx.book_index_go_seg)) {
               markup =
                 munge.url_links("{ " ~ m["link"] ~ " }"
                 ~ mkup.mark_internal_site_lnk ~ m["seg"] ~ ".fnSuffix"
@@ -4383,7 +4376,7 @@ template SiSUdocAbstraction() {
           }
           auto bkidx_lnk_scroll(string locs) {
             string markup = "";
-            if (auto m = matchFirst(locs, rgx.book_index_go)) {
+            if (auto m = locs.matchFirst(rgx.book_index_go)) {
               markup =
                 munge.url_links("{ " ~ m["link"] ~ " }"
                 ~ mkup.mark_internal_site_lnk
@@ -4421,7 +4414,7 @@ template SiSUdocAbstraction() {
           comp_obj_para.use                   = "backmatter";
           comp_obj_para.is_of                 = "para";
           comp_obj_para.is_a                  = "bookindex";
-          comp_obj_para.text                  = to!string(bi_tmp_scroll).strip;
+          comp_obj_para.text                  = bi_tmp_scroll.to!string.strip;
           comp_obj_para.ocn                   = obj_cite_number;
           comp_obj_para.obj_cite_number       = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
           comp_obj_para.anchor_tags           = bi_tmp_tags;
@@ -4430,7 +4423,7 @@ template SiSUdocAbstraction() {
           comp_obj_para.bullet                = false;
           comp_obj_para.inline_links          = true;
           bookindex_section["scroll"]         ~= comp_obj_para;
-          comp_obj_para.text                  = to!string(bi_tmp_seg).strip;
+          comp_obj_para.text                  = bi_tmp_seg.to!string.strip;
           bookindex_section["seg"]            ~= comp_obj_para;
           ++obj_cite_number;
           ++mkn;
@@ -4470,7 +4463,7 @@ template SiSUdocAbstraction() {
       assert(cntr >= previous_count);
       previous_count=cntr;
       assert(
-        match(contents_am[cntr].text,
+        (contents_am[cntr].text).match(
         rgx.inline_notes_delimiter_al_regular_number_note)
       );
     }
@@ -4480,8 +4473,7 @@ template SiSUdocAbstraction() {
       auto munge = ObjInlineMarkupMunge();
       foreach(
         m;
-        matchAll(
-          contents_am[cntr].text,
+        (contents_am[cntr].text).matchAll(
           rgx.inline_notes_delimiter_al_regular_number_note
         )
       ) {
@@ -4518,8 +4510,8 @@ template SiSUdocAbstraction() {
     body {
       string[][string] endnotes_;
       if (object_notes.length > 1) {
-        endnotes_["notes"] = (split(object_notes["notes"], rgx.break_string))[0..$-1];
-        endnotes_["anchor"] = (split(object_notes["anchor"], rgx.break_string))[0..$-1];
+        endnotes_["notes"] = (object_notes["notes"].split(rgx.break_string))[0..$-1];
+        endnotes_["anchor"] = (object_notes["anchor"].split(rgx.break_string))[0..$-1];
       } else {
         endnotes_["notes"] = [];
         endnotes_["anchor"] = [];
@@ -4602,8 +4594,8 @@ template SiSUdocAbstraction() {
         comp_obj_endnote_.indent_base           = 0;
         comp_obj_endnote_.bullet                = false;
         foreach (i, endnote; endnotes_["notes"]) {
-          auto     m                            = (matchFirst(endnote, rgx.note_ref));
-          string   notenumber                   = to!string(m.captures[1]);
+          auto     m                            = endnote.matchFirst(rgx.note_ref);
+          string   notenumber                   = m.captures[1].to!string;
           string   anchor_tag                   = "note_" ~ notenumber;
           comp_obj_endnote_.anchor_tags         = [ endnotes_["anchor"][i] ];
           comp_obj_endnote_.inline_links        = true;
@@ -4738,12 +4730,12 @@ template SiSUdocAbstraction() {
         static assert(is(typeof(is_)                == string));
       }
       assert(is_ != "heading");
-      assert(to!int(obj_cite_number_) >= 0);
+      assert(obj_cite_number_.to!int >= 0);
     }
     body {
       assert(is_ != "heading"); // should not be necessary
-      assert(to!int(obj_cite_number_) >= 0); // should not be necessary
-      int obj_cite_number=to!int(obj_cite_number_);
+      assert(obj_cite_number_.to!int >= 0); // should not be necessary
+      int obj_cite_number = obj_cite_number_.to!int;
       if (lv7 > State.off) {
         p_["lev_markup_number"] = DocStructMarkupHeading.h_text_4;
         p_["obj_cite_number"] = lv7;
@@ -4761,14 +4753,14 @@ template SiSUdocAbstraction() {
       comp_obj_location                       = comp_obj_location.init;
       comp_obj_location.is_a                  = is_;
       comp_obj_location.ocn                   = obj_cite_number_;
-      comp_obj_location.segment_anchor_tag    = to!string(segment_anchor_tag);
+      comp_obj_location.segment_anchor_tag    = segment_anchor_tag.to!string;
       comp_obj_location.parent_ocn            = p_["obj_cite_number"];
       comp_obj_location.parent_lev_markup     = p_["lev_markup_number"];
       debug(node) {
-        if (match(lev_markup_number, rgx.levels_numbered_headings)) {
-          writeln("x ", to!string(_node));
+        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
+          writeln("x ", _node.to!string);
         } else {
-          writeln("- ", to!string(_node));
+          writeln("- ", _node.to!string);
         }
       }
       assert(comp_obj_location.parent_lev_markup >= 4);
@@ -4811,18 +4803,18 @@ template SiSUdocAbstraction() {
       assert(is_ == "heading");
       assert(to!int(obj_cite_number_) >= 0);
       assert(
-        match(lev_markup_number, rgx.levels_numbered),
-        ("not a valid heading level: " ~ lev_markup_number ~ " at " ~ to!string(obj_cite_number_))
+        lev_markup_number.match(rgx.levels_numbered),
+        ("not a valid heading level: " ~ lev_markup_number ~ " at " ~ obj_cite_number_.to!string)
       );
-      if (match(lev_markup_number, rgx.levels_numbered)) {
-        if (to!int(lev_markup_number) == 0) {
-          assert(to!int(obj_cite_number_) == 1);
+      if (lev_markup_number.match(rgx.levels_numbered)) {
+        if (lev_markup_number.to!int == 0) {
+          assert(obj_cite_number_.to!int == 1);
         }
       }
     }
     body {
-      int obj_cite_number = to!int(obj_cite_number_);
-      switch (to!int(lev_markup_number)) {
+      int obj_cite_number = obj_cite_number_.to!int;
+      switch (lev_markup_number.to!int) {
       case 0:
         lv = DocStructMarkupHeading.h_sect_A;
         lv0 = obj_cite_number;
@@ -4907,13 +4899,13 @@ template SiSUdocAbstraction() {
       _comp_obj_heading_.use                       = "body";
       _comp_obj_heading_.is_of                     = "para";
       _comp_obj_heading_.is_a                      = "heading";
-      _comp_obj_heading_.text                      = to!string(_text).strip;
+      _comp_obj_heading_.text                      = _text.to!string.strip;
       _comp_obj_heading_.ocn                       = obj_cite_number_;
-      _comp_obj_heading_.obj_cite_number           = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
-      _comp_obj_heading_.segment_anchor_tag        = to!string(segment_anchor_tag);
+      _comp_obj_heading_.obj_cite_number           = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
+      _comp_obj_heading_.segment_anchor_tag        = segment_anchor_tag.to!string;
       _comp_obj_heading_.marked_up_level           = lev;
-      _comp_obj_heading_.heading_lev_markup        = (!(lev_markup_number.empty) ? to!int(lev_markup_number) : 0);
-      _comp_obj_heading_.heading_lev_collapsed     = (!(lev_collapsed_number.empty) ? to!int(lev_collapsed_number) : 0);
+      _comp_obj_heading_.heading_lev_markup        = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
+      _comp_obj_heading_.heading_lev_collapsed     = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
       _comp_obj_heading_.parent_ocn                = p_["obj_cite_number"];
       _comp_obj_heading_.parent_lev_markup         = p_["lev_markup_number"];
       _comp_obj_heading_.heading_ancestors_text    = lv_ancestors;
@@ -4924,18 +4916,18 @@ template SiSUdocAbstraction() {
       _comp_obj_heading_.inline_notes_star         = flag_notes_star;
       _comp_obj_heading_.inline_links              = flag_links;
       debug(node) {
-        if (match(lev_markup_number, rgx.levels_numbered_headings)) {
-          writeln("* ", to!string(_node));
+        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
+          writeln("* ", _node.to!string);
         }
       }
       debug(nodeheading) {
-        if (match(lev_markup_number, rgx.levels_numbered_headings)) {
-          writeln("* ", to!string(_node));
+        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
+          writeln("* ", _node.to!string);
         }
       }
       assert(_comp_obj_heading_.parent_lev_markup <= 7);
       assert(_comp_obj_heading_.parent_ocn >= 0);
-      if (match(lev_markup_number, rgx.levels_numbered_headings)) {
+      if (lev_markup_number.match(rgx.levels_numbered_headings)) {
         assert(_comp_obj_heading_.heading_lev_markup <= 7);
         assert(_comp_obj_heading_.ocn >= 0);
         if (_comp_obj_heading_.parent_lev_markup > 0) {
@@ -5054,7 +5046,7 @@ template SiSUdocAbstraction() {
     }
     if (lv["h7"] == State.off) {
     }
-    switch (to!string(an_object["lev"])) {
+    switch ((an_object["lev"]).to!string) {
     case "A":
       if (lv["h0"] == State.off) {
         assert(lv["h1"] == State.off);
diff --git a/src/sdp/ao_conf_make_meta.d b/src/sdp/ao_conf_make_meta.d
index 40c68ea..b34b7f3 100644
--- a/src/sdp/ao_conf_make_meta.d
+++ b/src/sdp/ao_conf_make_meta.d
@@ -36,7 +36,7 @@ template SiSUheaderExtractHub() {
     }
     auto head_native = HeaderDocMetadataAndMakeNativeToAA();
     auto head_sdlang = HeaderExtractSDL();
-    auto header_make_and_meta_tuple = (match(header_src, rgx.native_header_meta_title))
+    auto header_make_and_meta_tuple = (header_src.match(rgx.native_header_meta_title))
     ? (head_native.headerNativeToAA(header_src))
     : (head_sdlang.headerSDLangToAA(header_src, conf_doc_make_aa));
     static assert(!isTypeTuple!(header_make_and_meta_tuple));
diff --git a/src/sdp/ao_conf_make_meta_native.d b/src/sdp/ao_conf_make_meta_native.d
index 08a7d9f..500be52 100644
--- a/src/sdp/ao_conf_make_meta_native.d
+++ b/src/sdp/ao_conf_make_meta_native.d
@@ -40,15 +40,13 @@ template SiSUheaderExtractNative() {
         destroy(dochead_meta);
         destroy(dochead_make);
       }
-      if (auto t = match(header, rgx.native_header_main)) {
-        char[][] header_obj_spl = split(
-          cast(char[]) header,
-          rgx.line_delimiter_ws_strip
-        );
+      if (auto t = header.match(rgx.native_header_main)) {
+        char[][] header_obj_spl =
+          (cast(char[]) header).split(rgx.line_delimiter_ws_strip);
         auto hm = to!string(t.captures[1]);
-        if (match(hm, rgx.main_headers)) {
+        if (hm.match(rgx.main_headers)) {
           foreach (line; header_obj_spl) {
-            if (auto m = match(line, rgx.native_header_main)) {
+            if (auto m = line.match(rgx.native_header_main)) {
               if (!empty(m.captures[2])) {
                 if (hm == "creator") {
                   dochead_meta[hm]["author"] =
@@ -68,7 +66,7 @@ template SiSUheaderExtractNative() {
                 && (dochead_make[hm])) {
                   switch (hm) {
                   case "make":
-                    if (match(hs, rgx.native_subhead_make)) {
+                    if (hs.match(rgx.native_subhead_make)) {
                       if (dochead_make[hm][hs]) {
                         dochead_make[hm][hs] = to!string(s.captures[2]);
                       }
@@ -84,7 +82,7 @@ template SiSUheaderExtractNative() {
                 } else if (dochead_meta[hm]) {
                   switch (hm) {
                   case "creator":
-                    if (match(hs, rgx.native_subhead_creator)) {
+                    if (hs.match(rgx.native_subhead_creator)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -96,7 +94,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "title":
-                    if (match(hs, rgx.native_subhead_title)) {
+                    if (hs.match(rgx.native_subhead_title)) {
                       if ((hs == "subtitle")
                       && (dochead_meta[hm]["sub"])) {
                         dochead_meta[hm]["sub"] =
@@ -112,7 +110,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "rights":
-                    if (match(hs, rgx.native_subhead_rights)) {
+                    if (hs.match(rgx.native_subhead_rights)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -124,7 +122,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "date":
-                    if (match(hs, rgx.native_subhead_date)) {
+                    if (hs.match(rgx.native_subhead_date)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -136,7 +134,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "original":
-                    if (match(hs, rgx.native_subhead_original)) {
+                    if (hs.match(rgx.native_subhead_original)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -148,7 +146,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "classify":
-                    if (match(hs, rgx.native_subhead_classify)) {
+                    if (hs.match(rgx.native_subhead_classify)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -160,7 +158,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "identifier":
-                    if (match(hs, rgx.native_subhead_identifier)) {
+                    if (hs.match(rgx.native_subhead_identifier)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -172,7 +170,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "notes":
-                    if (match(hs, rgx.native_subhead_notes)) {
+                    if (hs.match(rgx.native_subhead_notes)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -184,7 +182,7 @@ template SiSUheaderExtractNative() {
                     }
                     break;
                   case "publisher":
-                    if (match(hs, rgx.native_subhead_publisher)) {
+                    if (hs.match(rgx.native_subhead_publisher)) {
                       if (dochead_meta[hm][hs]) {
                         dochead_meta[hm][hs] =
                           to!string(s.captures[2]);
@@ -226,14 +224,14 @@ template SiSUheaderExtractNative() {
         static assert(is(typeof(an_object)  == string[string]));
         static assert(is(typeof(type)       == int[string]));
       }
-      if (matchFirst(line, rgx.native_header_make)) {   /+ matched header_make +/
+      if (line.matchFirst(rgx.native_header_make)) {   /+ matched header_make +/
         debug(header1) { /+ writeln(line); +/ }
         type["header"]      = State.on;
         type["header_make"] = State.on;
         type["header_meta"] = State.off;
         ++line_occur["header_make"];
         an_object["body_nugget"] ~= line ~= "\n";
-      } else if (matchFirst(line, rgx.native_header)) { /+ matched header_metadata +/
+      } else if (line.matchFirst(rgx.native_header)) { /+ matched header_metadata +/
         /+ (generic header match and not previously caught by header_make) +/
         debug(header1) { /+ writeln(line); +/ }
         type["header"]      = State.on;
@@ -243,14 +241,14 @@ template SiSUheaderExtractNative() {
         an_object["body_nugget"] ~= line ~= "\n";
       } else if (type["header_make"] == State.on
       && (line_occur["header_make"] > State.off)) {     /+ header_make flag set +/
-        if (matchFirst(line, rgx.native_header_sub)) {  /+ sub-header +/
+        if (line.matchFirst(rgx.native_header_sub)) {  /+ sub-header +/
           debug(header1) { /+ writeln(line); +/ }
           ++line_occur["header_make"];
           an_object["body_nugget"] ~= line ~= "\n";
         }
       } else if (type["header_meta"] == State.on
       && (line_occur["header_meta"] > State.off)) {     /+ header_metadata flag set +/
-        if (matchFirst(line, rgx.native_header_sub)) {  /+ sub-header +/
+        if (line.matchFirst(rgx.native_header_sub)) {  /+ sub-header +/
           debug(header1) { /+ writeln(line); +/ }
           ++line_occur["header_meta"];
           an_object["body_nugget"] ~= line ~= "\n";
@@ -291,14 +289,14 @@ template SiSUheaderExtractNative() {
       auto dochead_meta = meta_aa;
       auto set_header = HeaderDocMetadataAndMakeNativeToAA();
       char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.newline_eol_delimiter);
+        (cast(char[]) src_header).split(rgx.newline_eol_delimiter);
       foreach(header_line; source_header_arr) {
-        if (auto m = matchFirst(header_line, rgx.comment)) {
+        if (auto m = header_line.matchFirst(rgx.comment)) {
           /+ matched comment +/
           debug(comment) {
           }
           header_reset_states_common(line_occur, an_object, type);
-        } else if ((matchFirst(header_line, rgx.native_header))
+        } else if ((header_line.matchFirst(rgx.native_header))
         || (type["header_make"] == State.on
         && (line_occur["header_make"] > State.off))
         || (type["header_meta"] == State.on
diff --git a/src/sdp/ao_conf_make_meta_sdlang.d b/src/sdp/ao_conf_make_meta_sdlang.d
index 04261d0..533f482 100644
--- a/src/sdp/ao_conf_make_meta_sdlang.d
+++ b/src/sdp/ao_conf_make_meta_sdlang.d
@@ -216,7 +216,7 @@ template SiSUheaderExtractSDLang() {
         static assert(is(typeof(src_header) == char[]));
       }
       char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.newline_eol_delimiter);
+        (cast(char[]) src_header).split(rgx.newline_eol_delimiter);
       char[] header_clean;
       // TODO
       foreach(header_line; source_header_arr) {
@@ -263,9 +263,9 @@ template SiSUheaderExtractSDLang() {
       }
       dochead_meta["creator"]["author_raw"] = dochead_meta["creator"]["author"];
       string[] authors_arr;
-      auto authors_raw_arr = split(dochead_meta["creator"]["author"], rgx.arr_delimiter);
+      auto authors_raw_arr = dochead_meta["creator"]["author"].split(rgx.arr_delimiter);
       foreach (author_raw; authors_raw_arr) {
-        authors_arr ~= (author_raw).replace(rgx.raw_author_munge, "$2 $1");
+        authors_arr ~= author_raw.replace(rgx.raw_author_munge, "$2 $1");
       }
       dochead_meta["creator"]["author"] = join(authors_arr, ", ").chomp.chomp;
       auto t = tuple(dochead_make, dochead_meta);
diff --git a/src/sdp/ao_doc_debugs.d b/src/sdp/ao_doc_debugs.d
index 2c0da82..989a826 100644
--- a/src/sdp/ao_doc_debugs.d
+++ b/src/sdp/ao_doc_debugs.d
@@ -249,7 +249,7 @@ template SiSUdebugs() {
         switch (main_header) {
         case "make":
           foreach (sub_header; ptr_head_sub_make) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -275,7 +275,7 @@ template SiSUdebugs() {
         switch (main_header) {
         case "creator":
           foreach (sub_header; ptr_head_sub_creator) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -287,7 +287,7 @@ template SiSUdebugs() {
           break;
         case "title":
           foreach (sub_header; ptr_head_sub_title) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -299,7 +299,7 @@ template SiSUdebugs() {
           break;
         case "rights":
           foreach (sub_header; ptr_head_sub_rights) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -311,7 +311,7 @@ template SiSUdebugs() {
           break;
         case "date":
           foreach (sub_header; ptr_head_sub_date) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -323,7 +323,7 @@ template SiSUdebugs() {
           break;
         case "original":
           foreach (sub_header; ptr_head_sub_original) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -335,7 +335,7 @@ template SiSUdebugs() {
           break;
         case "classify":
           foreach (sub_header; ptr_head_sub_classify) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -347,7 +347,7 @@ template SiSUdebugs() {
           break;
         case "identifier":
           foreach (sub_header; ptr_head_sub_identifier) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -359,7 +359,7 @@ template SiSUdebugs() {
           break;
         case "notes":
           foreach (sub_header; ptr_head_sub_notes) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
@@ -371,7 +371,7 @@ template SiSUdebugs() {
           break;
         case "publisher":
           foreach (sub_header; ptr_head_sub_publisher) {
-            if (to!string(doc_matters.dochead_meta[main_header][sub_header]).length > 2) {
+            if (doc_matters.dochead_meta[main_header][sub_header].to!string.length > 2) {
               writefln(
                 "%s:%s: %s",
                 main_header,
diff --git a/src/sdp/ao_read_config_files.d b/src/sdp/ao_read_config_files.d
index 51fd81b..2cdf861 100644
--- a/src/sdp/ao_read_config_files.d
+++ b/src/sdp/ao_read_config_files.d
@@ -43,7 +43,7 @@ template ConfigIn() {
           debug(configfile) {
             writeln(conf_file);
           }
-          config_file_str = readText(conf_file);
+          config_file_str = conf_file.readText;
           break;
         }
       }
diff --git a/src/sdp/ao_read_source_files.d b/src/sdp/ao_read_source_files.d
index 4acfe41..b47918a 100644
--- a/src/sdp/ao_read_source_files.d
+++ b/src/sdp/ao_read_source_files.d
@@ -44,7 +44,7 @@ template SiSUrawMarkupContent() {
         raw.markupSourceHeaderContentRawLineTupleArray(source_txt_str);
       auto header_raw = t[0];
       auto sourcefile_body_content = t[1];
-      if (match(fn_src, rgx.src_fn_master)) { // filename with path needed if master file (.ssm) not otherwise
+      if (fn_src.match(rgx.src_fn_master)) { // filename with path needed if master file (.ssm) not otherwise
         auto ins = Inserts();
         auto tu =
           ins.scan_master_src_for_insert_files_and_import_content(sourcefile_body_content, fn_src);
@@ -71,7 +71,7 @@ template SiSUrawMarkupContent() {
       string source_txt_str;
       try {
         if (exists(fn_src)) {
-          source_txt_str = readText(fn_src);
+          source_txt_str = fn_src.readText;
         }
       }
       catch (ErrnoException ex) {
@@ -88,24 +88,25 @@ template SiSUrawMarkupContent() {
     final private char[][] header0Content1(in string src_text) {
       /+ split string on _first_ match of "^:?A~\s" into [header, content] array/tuple +/
       char[][] header_and_content;
-      auto m = matchFirst(cast(char[]) src_text, rgx.heading_a);
+      auto m = (cast(char[]) src_text).matchFirst(rgx.heading_a);
       header_and_content ~= m.pre;
       header_and_content ~= m.hit ~ m.post;
       assert(header_and_content.length == 2,
-        "document markup is broken, header body split == " ~ to!string(header_and_content.length) ~
-        "; (header / body array split should == 2 (split is on level A~))"
+        "document markup is broken, header body split == "
+        ~ header_and_content.length.to!string
+        ~ "; (header / body array split should == 2 (split is on level A~))"
       );
       return header_and_content;
     }
     final private char[][] markupSourceLineArray(in char[] src_text) {
       char[][] source_line_arr =
-        split(cast(char[]) src_text, rgx.newline_eol_strip_preceding);
+        (cast(char[]) src_text).split(rgx.newline_eol_strip_preceding);
       return source_line_arr;
     }
     auto markupSourceReadIn(in string fn_src) {
       auto rgx = Rgx();
       enforce(
-        match(fn_src, rgx.src_pth),
+        fn_src.match(rgx.src_pth),
         "not a sisu markup filename"
       );
       auto source_txt_str = readInMarkupSource(fn_src);
@@ -129,7 +130,7 @@ template SiSUrawMarkupContent() {
       Regex!(char) rgx_file
     ) {
       enforce(
-        match(fn_src, rgx_file),
+        fn_src.match(rgx_file),
         "not a sisu markup filename"
       );
       auto source_txt_str = readInMarkupSource(fn_src);
@@ -146,17 +147,17 @@ template SiSUrawMarkupContent() {
       mixin SiSUrgxInitFlags;
       char[][] contents_insert;
       auto type1 = flags_type_init;
-      auto fn_pth_full = match(fn_src, rgx.src_pth);
+      auto fn_pth_full = fn_src.match(rgx.src_pth);
       auto markup_src_file_path = fn_pth_full.captures[1];
       foreach (line; markup_sourcefile_insert_content) {
         if (type1["curly_code"] == 1) {
           type1["header_make"] = 0;
           type1["header_meta"] = 0;
-          if (matchFirst(line, rgx.block_curly_code_close)) {
+          if (line.matchFirst(rgx.block_curly_code_close)) {
             type1["curly_code"] = 0;
           }
           contents_insert ~= line;
-        } else if (matchFirst(line, rgx.block_curly_code_open)) {
+        } else if (line.matchFirst(rgx.block_curly_code_open)) {
           type1["curly_code"] = 1;
           type1["header_make"] = 0;
           type1["header_meta"] = 0;
@@ -164,28 +165,28 @@ template SiSUrawMarkupContent() {
         } else if (type1["tic_code"] == 1) {
           type1["header_make"] = 0;
           type1["header_meta"] = 0;
-          if (matchFirst(line, rgx.block_tic_close)) {
+          if (line.matchFirst(rgx.block_tic_close)) {
             type1["tic_code"] = 0;
           }
           contents_insert ~= line;
-        } else if (matchFirst(line, rgx.block_tic_code_open)) {
+        } else if (line.matchFirst(rgx.block_tic_code_open)) {
           type1["tic_code"] = 1;
           type1["header_make"] = 0;
           type1["header_meta"] = 0;
           contents_insert ~= line;
         } else if (
           (type1["header_make"] == 1)
-          && matchFirst(line, rgx.native_header_sub)
+          && line.matchFirst(rgx.native_header_sub)
         ) {
             type1["header_make"] = 1;
             type1["header_meta"] = 0;
         } else if (
           (type1["header_meta"] == 1)
-          && matchFirst(line, rgx.native_header_sub)
+          && line.matchFirst(rgx.native_header_sub)
         ) {
             type1["header_meta"] = 1;
             type1["header_make"] = 0;
-        } else if (auto m = match(line, rgx.insert_src_fn_ssi_or_sst)) {
+        } else if (auto m = line.match(rgx.insert_src_fn_ssi_or_sst)) {
           type1["header_make"] = 0;
           type1["header_meta"] = 0;
           auto insert_fn = m.captures[2];
@@ -229,27 +230,27 @@ template SiSUrawMarkupContent() {
       mixin SiSUrgxInitFlags;
       char[][] contents;
       auto type = flags_type_init;
-      auto fn_pth_full = match(fn_src, rgx.src_pth);
+      auto fn_pth_full = fn_src.match(rgx.src_pth);
       auto markup_src_file_path = fn_pth_full.captures[1];
       string[] insert_file_list =[];
       foreach (line; sourcefile_body_content) {
         if (type["curly_code"] == 1) {
-          if (matchFirst(line, rgx.block_curly_code_close)) {
+          if (line.matchFirst(rgx.block_curly_code_close)) {
             type["curly_code"] = 0;
           }
           contents ~= line;
-        } else if (matchFirst(line, rgx.block_curly_code_open)) {
+        } else if (line.matchFirst(rgx.block_curly_code_open)) {
           type["curly_code"] = 1;
           contents ~= line;
         } else if (type["tic_code"] == 1) {
-          if (matchFirst(line, rgx.block_tic_close)) {
+          if (line.matchFirst(rgx.block_tic_close)) {
             type["tic_code"] = 0;
           }
           contents ~= line;
-        } else if (matchFirst(line, rgx.block_tic_code_open)) {
+        } else if (line.matchFirst(rgx.block_tic_code_open)) {
           type["tic_code"] = 1;
           contents ~= line;
-        } else if (auto m = match(line, rgx.insert_src_fn_ssi_or_sst)) {
+        } else if (auto m = line.match(rgx.insert_src_fn_ssi_or_sst)) {
           auto insert_fn = m.captures[2];
           auto insert_sub_pth = m.captures[1];
           auto fn_src_insert =
@@ -257,7 +258,7 @@ template SiSUrawMarkupContent() {
             insert_file_list ~= to!string(fn_src_insert);
           auto raw = MarkupRawUnit();
           /+ TODO +/
-          if (auto ma = match(line, rgx.src_fn_text)) {
+          if (auto ma = line.match(rgx.src_fn_text)) {
             /+ .sst when inserted, not used: headers and heading level ^:?A~ so remove +/
             writeln(__LINE__); writeln(ma);
           }
diff --git a/src/sdp/output_epub.d b/src/sdp/output_epub.d
index c66bf8f..3724854 100644
--- a/src/sdp/output_epub.d
+++ b/src/sdp/output_epub.d
@@ -165,7 +165,6 @@ template outputEPub() {
     mixin SiSUoutputRgxInit;
     auto xhtml_format = outputXHTMLs();
     auto rgx = Rgx();
-    // string[] toc;
     string[][string] doc_epub;
     string[][string] doc_epub_endnotes;
     string[] doc;
@@ -395,13 +394,13 @@ template outputEPub() {
     auto xhtml_format = outputXHTMLs();
     try {
       if (!exists(pth_epub.doc_meta_inf(doc_matters.source_filename))) {
-        mkdirRecurse(pth_epub.doc_meta_inf(doc_matters.source_filename));
+        pth_epub.doc_meta_inf(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_epub.doc_oebps_css(doc_matters.source_filename))) {
-        mkdirRecurse(pth_epub.doc_oebps_css(doc_matters.source_filename));
+        pth_epub.doc_oebps_css(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_epub.doc_oebps_image(doc_matters.source_filename))) {
-        mkdirRecurse(pth_epub.doc_oebps_image(doc_matters.source_filename));
+        pth_epub.doc_oebps_image(doc_matters.source_filename).mkdirRecurse;
       }
       /+ OEBPS/[segments].xhtml +/
       foreach (seg_filename; doc_matters.segnames) {
@@ -429,8 +428,8 @@ template outputEPub() {
       f.writeln(oebps_content_opf);
       foreach (image; doc_matters.image_list) {
         if (exists("_sisu/image/"~ image)) {
-          copy(("_sisu/image/"~ image),
-            ((pth_epub.doc_oebps_image(doc_matters.source_filename)) ~ "/" ~ image));
+          ("_sisu/image/"~ image)
+          .copy((pth_epub.doc_oebps_image(doc_matters.source_filename)) ~ "/" ~ image);
         }
       }
     }
diff --git a/src/sdp/output_html.d b/src/sdp/output_html.d
index cc330b2..6d4e0c5 100644
--- a/src/sdp/output_html.d
+++ b/src/sdp/output_html.d
@@ -177,7 +177,7 @@ template outputHTML() {
     auto pth_html = HtmlPaths();
     try {
       if (!exists(pth_html.base)) {
-        mkdirRecurse(pth_html.base);
+        pth_html.base.mkdirRecurse;
       }
       auto f = File(pth_html.fn_scroll(fn_src), "w");
       foreach (o; doc) {
@@ -405,10 +405,10 @@ template outputHTML() {
     mixin SiSUpaths;
     auto pth_html = HtmlPaths();
     auto xhtml_format = outputXHTMLs();
-    auto m = matchFirst(doc_matters.source_filename, rgx.src_fn);
+    auto m = doc_matters.source_filename.matchFirst(rgx.src_fn);
     try {
       if (!exists(pth_html.seg(doc_matters.source_filename))) {
-        mkdirRecurse(pth_html.seg(doc_matters.source_filename));
+        pth_html.seg(doc_matters.source_filename).mkdirRecurse;
       }
       foreach (seg_filename; doc_matters.segnames) {
         auto f = File(pth_html.fn_seg(doc_matters.source_filename, seg_filename), "w");
@@ -1263,7 +1263,7 @@ template outputHTML() {
     auto pth_css_fn= pth_css ~ "/html.css";
     try {
       if (!exists(pth_css)) {
-        mkdirRecurse(pth_css);
+        pth_css.mkdirRecurse;
       }
       auto f = File(pth_css_fn, "w");
       f.writeln(html_css);
diff --git a/src/sdp/output_xhtmls.d b/src/sdp/output_xhtmls.d
index dcbc8f8..4ee5a79 100644
--- a/src/sdp/output_xhtmls.d
+++ b/src/sdp/output_xhtmls.d
@@ -153,7 +153,7 @@ template outputXHTMLs() {
     ) {
       if (obj.inline_links) {
         if ((seg_scroll == "scroll")
-        && match(_txt, rgx.mark_internal_site_lnk)) {
+        && _txt.match(rgx.mark_internal_site_lnk)) {
           _txt = (_txt).replaceAll(
             rgx.inline_seg_link,
             "$1");
@@ -170,7 +170,7 @@ template outputXHTMLs() {
         );
       }
       debug(markup_links) {
-        if ( match(_txt, rgx.inline_link)) {
+        if (_txt.match(rgx.inline_link)) {
           writeln(__LINE__,
             " (missed) markup link identified (",
             obj.inline_links,
@@ -180,7 +180,7 @@ template outputXHTMLs() {
         }
       }
       debug(markup) {
-        if ( match(_txt, rgx.inline_link)) {
+        if (_txt.match(rgx.inline_link)) {
           writeln(__LINE__,
             " (missed) markup link identified (",
             obj.inline_links,
@@ -202,12 +202,12 @@ template outputXHTMLs() {
         );
       }
       debug(markup_endnotes) {
-        if (match(_txt, rgx.inline_notes_delimiter_al_regular_number_note)) {
+        if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
           writeln(__LINE__, " (missed) markup endnote: ", obj.is_a, ": ", obj.text);
         }
       }
       debug(markup) {
-        if (match(_txt, rgx.inline_notes_delimiter_al_regular_number_note)) {
+        if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
           writeln(__LINE__, " (missed) markup endnote: ", obj.is_a, ": ", obj.text);
         }
       }
@@ -227,7 +227,7 @@ template outputXHTMLs() {
       string[] _endnotes;
       if (obj.inline_notes_reg) {
         /+ need markup for text, and separated footnote +/
-        foreach(m; matchAll(_txt, rgx.inline_notes_delimiter_al_regular_number_note)) {
+        foreach(m; _txt.matchAll(rgx.inline_notes_delimiter_al_regular_number_note)) {
           _endnotes ~= format(
             "%s%s%s%s\n  %s%s%s%s%s\n  %s\n%s",
             "<p class=\"endnote\">",
@@ -247,7 +247,7 @@ template outputXHTMLs() {
           rgx.inline_notes_delimiter_al_regular_number_note,
           ("<a href=\"#note_$1\"><note id=\"noteref_$1\">&nbsp;<sup>$1</sup>&nbsp;</note></a>")
         );
-      } else if (match(_txt, rgx.inline_notes_delimiter_al_regular_number_note)) {
+      } else if (_txt.match(rgx.inline_notes_delimiter_al_regular_number_note)) {
         debug(markup) {
           writeln(__LINE__, " endnote: ", obj.is_a, ": ", obj.text);
         }
diff --git a/src/sdp/source_sisupod.d b/src/sdp/source_sisupod.d
index ce2bfaf..e6702bf 100644
--- a/src/sdp/source_sisupod.d
+++ b/src/sdp/source_sisupod.d
@@ -32,23 +32,23 @@ template SiSUpod() {
     mixin SiSUlanguageCodes;
     auto lang = Lang();
     auto rgx = Rgx();
-    assert (match(doc_matters.source_filename, rgx.src_fn));
+    assert (doc_matters.source_filename.match(rgx.src_fn));
     try {
       /+ create directory structure +/
       if (!exists(pth_sisupod.doc(doc_matters.source_filename))) {
-        mkdirRecurse(pth_sisupod.doc(doc_matters.source_filename));
+        pth_sisupod.doc(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_sisupod.conf(doc_matters.source_filename))) {
-        mkdirRecurse(pth_sisupod.conf(doc_matters.source_filename));
+        pth_sisupod.conf(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_sisupod.css(doc_matters.source_filename))) {
-        mkdirRecurse(pth_sisupod.css(doc_matters.source_filename));
+        pth_sisupod.css(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_sisupod.image(doc_matters.source_filename))) {
-        mkdirRecurse(pth_sisupod.image(doc_matters.source_filename));
+        pth_sisupod.image(doc_matters.source_filename).mkdirRecurse;
       }
       if (!exists(pth_sisupod.doc_lng(doc_matters.source_filename, doc_matters.language))) {
-        mkdirRecurse(pth_sisupod.doc_lng(doc_matters.source_filename, doc_matters.language));
+        pth_sisupod.doc_lng(doc_matters.source_filename, doc_matters.language).mkdirRecurse;
       }
       debug(sisupod) {
         writeln(__LINE__, ": ",
@@ -80,8 +80,7 @@ template SiSUpod() {
             ));
           }
           if (exists(insert_file)) {
-            copy(
-              insert_file,
+            insert_file.copy(
               pth_sisupod.fn_doc_insert(
                 doc_matters.source_filename,
                 insert_file,
@@ -98,8 +97,7 @@ template SiSUpod() {
           );
         }
         if (exists("_sisu/image/"~ image)) {
-          copy(
-            ("_sisu/image/"~ image),
+          ("_sisu/image/"~ image).copy(
             (pth_sisupod.image(doc_matters.source_filename) ~ "/" ~ image)
           );
         }