nix flake, things nix

6 files changed, 4930 insertions, 0 deletions

diff --git a/org/cgi_spine_search.org b/org/cgi_spine_search.org
new file mode 100644
index 0000000..4e091bb
--- /dev/null
+++ b/org/cgi_spine_search.org
@@ -0,0 +1,2243 @@
+-*- mode: org -*-
+#+TITLE:       spine search cgi (doc_reform) hub
+#+DESCRIPTION: documents - structuring, various output representations & search
+#+FILETAGS:    :spine:hub:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+- [[./doc-reform.org][doc-reform.org]]  [[./][org/]]
+- [[./spine_build_scaffold.org][make/build]] VERSION
+
+#+NAME: year
+#+BEGIN_SRC text
+2022
+#+END_SRC
+
+* 0. version.txt configuration.txt (set version & configuration)
+
+** program version struct
+
+#+NAME: spine_version_struct
+#+BEGIN_SRC d
+/+ obt - org-mode generated file +/
+struct Version {
+  int major;
+  int minor;
+  int patch;
+}
+#+END_SRC
+
+** set program version VERSION  :version:set:project:
+
+#+NAME: spine_version_set
+#+BEGIN_SRC d
+enum _ver = Version(0, 12, 0);
+#+END_SRC
+
+** compilation restrictions (supported compilers)
+- set compilation restrictions
+
+https://dlang.org/spec/version.html#predefined-versions
+
+#+NAME: spine_compiler_restrictions
+#+BEGIN_SRC d
+version (Posix) {
+  version (DigitalMars) {
+  } else version (LDC) {
+  } else version (GNU) {
+  } else {
+    static assert (0, "Unsupported D compiler");
+  }
+} else {
+  static assert (0, "Unsupported D compiler");
+}
+#+END_SRC
+
+* 1. spine search cgi :spine_search:
+** notes
+- provide
+
+** spine_search src/spine_search.d :template:
+
+#+HEADER: :tangle "../src/spine_search.d_"
+#+HEADER: :shebang "#!/usr/bin/env rdmd"
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+<<doc_header_including_copyright_and_license>>
+/+ dub.sdl
+  name "spine search"
+  description "spine cgi search"
+  /+ obt - org-mode generated file +/
++/
+<<spine_search_imports>>
+void cgi_function_intro(Cgi cgi) {
+  mixin(import("configuration.txt"));
+  <<spine_search_init_1>>
+  <<spine_search_config_struct_init>>
+  <<spine_search_config_struct_set>>
+  <<spine_search_cgi_val>>
+  cv.db_selected = _cfg.db_sqlite_filename;
+  auto text_fields() {
+    string canned_query_str = environment.get("QUERY_STRING", "");
+    if ("query_string" in cgi.post) {
+      canned_query_str = environment.get("QUERY_STRING", "");
+    }
+    string[string] canned_query;
+    if (conf.request_method == "POST") {
+    } else if (conf.request_method == "GET") {
+      foreach (pair_str; canned_query_str.split("&")) {
+        // cgi.write(pair_str ~ "<br>");
+        string[] pair = pair_str.split("=");
+        canned_query[pair[0]] = pair[1];
+      }
+      // foreach (field, content; canned_query) {
+      //   cgi.write(field ~ ": " ~ content ~ "<br>");
+      // }
+    }
+    <<spine_search_rgx>>
+    <<spine_search_searchfields>>
+    <<spine_search_post>>
+    return got;
+  }
+  auto tf = text_fields; //
+  struct SQL_select {
+    string the_body         = "";
+    string the_range        = "";
+  }
+  auto sql_select = SQL_select();
+  string canned_url () {
+    string _url = "";
+    if (environment.get("REQUEST_METHOD", "POST") == "POST") {
+      _url = conf.query_base_url ~ tf.canned_query;
+    } else if (environment.get("REQUEST_METHOD", "POST") == "GET") {
+      _url = conf.query_base_url ~ environment.get("QUERY_STRING", "");
+    }
+    return _url;
+  }
+  auto regex_canned_search () {
+    static struct RgxCS {
+      static track_offset       = ctRegex!(`(?P<offset_key>[&]smo=)(?P<offset_val>[0-9]+)`);
+      static results_type       = ctRegex!(`[&]rt=(?P<results_type>idx|txt)`);
+      static results_type_index = ctRegex!(`[&]rt=idx`);
+      static results_type_text  = ctRegex!(`[&]rt=txt`);
+      static fn                 = ctRegex!(`[&]fn=(?P<fn>[^&]+)`);
+    }
+    return RgxCS();
+  }
+  string show_matched_objects (string fn) {
+    <<spine_search_show_matched_objects>>
+  }
+  <<spine_search_init_2>>
+  string previous_next () {
+    <<spine_search_previous_next>>
+  }
+  {
+<<spine_search_format_html_header>>
+  }
+  {
+  <<spine_search_format_html_table>>
+  }
+  {
+    string post_value(string field_name, string type="box", string set="on") {
+      <<spine_search_post_value>>
+    }
+    string the_can(string fv) {
+      <<spine_search_the_can>>
+    }
+    string provide_tip() {
+      <<spine_search_provide_tip>>
+    }
+<<spine_search_form>>
+    {
+      string set_value(string field_name, string default_val) {
+        <<spine_search_set_value>>
+      }
+      bool set_bool(string field_name) {
+        <<spine_search_set_bool>>
+      }
+      <<spine_search_set_selections>>
+    }
+  }
+  {
+    cgi.write(header);
+    cgi.write(table);
+    cgi.write(form);
+    // cgi.write(previous_next);
+    { // debug environment
+      // foreach (k, d; environment.toAA) {
+      //   cgi.write(k ~ ": " ~ d ~ "<br>");
+      // }
+    }
+    { // debug cgi info:
+      // <<spine_search_debug_info>>
+    }
+  }
+  auto db = Database(conf.db_path ~ "/" ~ cv.db_selected);
+  {
+    uint sql_match_offset_counter(T)(T cv) {
+      sql_match_offset_count += cv.sql_match_limit.to!uint;
+      return sql_match_offset_count;
+    }
+    void sql_search_query() {
+      string highlight_text_matched(string _txt, string search_field) {
+        <<spine_search_query_highlight_text_matched>>
+      }
+      string select_field_like(string db_field, string search_field) {
+        <<spine_search_query_select_field_like>>
+      }
+      <<spine_search_query_fields>>
+<<spine_search_query_format_sql_select_the_body>>
+      <<spine_search_cgi_writes>>
+<<spine_search_cgi_write_tail>>
+    }
+    sql_search_query;
+  }
+  {
+    db.close;
+  }
+  {
+    string tail = format(q"┃
+</body>
+┃");
+    cgi.write(tail);
+  }
+}
+mixin GenericMain!cgi_function_intro;
+#+END_SRC
+
+** settings spine_search.d
+*** spine search parts
+**** imports
+
+#+NAME: spine_search_imports
+#+BEGIN_SRC d
+import std.format;
+import std.range;
+import std.regex;
+import arsd.cgi;
+import d2sqlite3;
+import std.process : environment;
+#+END_SRC
+
+**** inits
+
+#+NAME: spine_search_init_1
+#+BEGIN_SRC d
+string header;
+string table;
+string form;
+#+END_SRC
+
+#+NAME: spine_search_init_2
+#+BEGIN_SRC d
+string base; // = "";
+string tip; // = "";
+string search_note; // = "";
+uint   sql_match_offset_count = 0;
+#+END_SRC
+
+**** config struct
+
+see: cfte_configuation.org
+
+***** init config struct
+
+#+NAME: spine_search_config_struct_init
+#+BEGIN_SRC d
+struct Config {
+  string http_request_type;
+  string http_host;
+  // string server_name;
+  string doc_collection_subroot;
+  string cgi_script_name;
+  string cgi_search_form_title;
+  string cgi_search_form_html_title;
+  string data_path_html;
+  string http_url;
+  string query_base_url;
+  string query_string;
+  string request_method;
+  string db_path;
+}
+#+END_SRC
+
+***** SET config struct
+
+#+NAME: spine_search_config_struct_set
+#+BEGIN_SRC d
+auto conf = Config();
+conf.http_request_type          = environment.get("REQUEST_SCHEME",        _cfg.http_request_type);
+conf.http_host                  = environment.get("SERVER_NAME",           _cfg.http_host);
+// conf.http_host                  = environment.get("HTTP_HOST",             _cfg.http_host);
+conf.doc_collection_subroot     = _cfg.www_url_doc_subroot;
+conf.cgi_script_name            = environment.get("SCRIPT_NAME",           _cfg.cgi_filename);
+conf.cgi_search_form_title      = _cfg.cgi_search_form_title; // ≅ SiSU spine search form
+conf.cgi_search_form_html_title = "<a href=\""
+  ~ conf.http_request_type ~ "://"
+  ~ conf.http_host
+  ~ "\">"
+  ~ _cfg.cgi_search_form_title
+  ~ "</a>";
+conf.query_base_url          = conf.http_request_type ~ "://" ~ conf.http_host ~ conf.cgi_script_name ~ "?";
+conf.query_string            = environment.get("QUERY_STRING",          "");
+conf.http_url                = environment.get("HTTP_REFERER",          conf.query_base_url ~ conf.query_string);
+conf.request_method          = environment.get("REQUEST_METHOD",        "POST");
+conf.db_path                 = _cfg.db_sqlite_path;
+#+END_SRC
+
+**** cgi val
+
+#+NAME: spine_search_cgi_val
+#+BEGIN_SRC d
+struct CGI_val {
+  string db_selected      = "";
+  string sql_match_limit  = "";     // radio: ( 1000 | 2500 )
+  string sql_match_offset = "";
+  string search_text      = "";
+  string results_type     = "";     // index
+  bool   checked_echo     = false;
+  bool   checked_stats    = false;
+  bool   checked_url      = false;
+  bool   checked_searched = false;
+  bool   checked_tip      = false;
+  bool   checked_sql      = false;
+}
+auto cv = CGI_val();
+#+END_SRC
+
+**** rgx
+
+#+NAME: spine_search_rgx
+#+BEGIN_SRC d
+static struct Rgx {
+  // static canned_query   = ctRegex!(`\A(?P<matched>.+)\Z`,                            "m");
+  static search_text_area  = ctRegex!(`\A(?P<matched>.+)\Z`,                            "m");
+  // static fulltext       = ctRegex!(`\A(?P<matched>.+)\Z`,                            "m");
+  static line              = ctRegex!(`^(?P<matched>.+?)(?: ~|$)`,                      "m");
+  static text              = ctRegex!(`(?:^|\s~\s*)text:\s+(?P<matched>.+?)(?: ~|$)`,   "m");
+  static author            = ctRegex!(`(?:^|\s~\s*)author:\s+(?P<matched>.+)$`,         "m");
+  static title             = ctRegex!(`(?:^|\s~\s*)title:\s+(?P<matched>.+)$`,          "m");
+  static uid               = ctRegex!(`(?:^|\s~\s*)uid:\s+(?P<matched>.+)$`,            "m");
+  static fn                = ctRegex!(`(?:^|\s~\s*)fn:\s+(?P<matched>.+)$`,             "m");
+  static keywords          = ctRegex!(`(?:^|\s~\s*)keywords:\s+(?P<matched>.+)$`,       "m");
+  static topic_register    = ctRegex!(`(?:^|\s~\s*)topic_register:\s+(?P<matched>.+)$`, "m");
+  static subject           = ctRegex!(`(?:^|\s~\s*)subject:\s+(?P<matched>.+)$`,        "m");
+  static description       = ctRegex!(`(?:^|\s~\s*)description:\s+(?P<matched>.+)$`,    "m");
+  static publisher         = ctRegex!(`(?:^|\s~\s*)publisher:\s+(?P<matched>.+)$`,      "m");
+  static editor            = ctRegex!(`(?:^|\s~\s*)editor:\s+(?P<matched>.+)$`,         "m");
+  static contributor       = ctRegex!(`(?:^|\s~\s*)contributor:\s+(?P<matched>.+)$`,    "m");
+  static date              = ctRegex!(`(?:^|\s~\s*)date:\s+(?P<matched>.+)$`,           "m");
+  static results_type      = ctRegex!(`(?:^|\s~\s*)type:\s+(?P<matched>.+)$`,           "m");
+  static format            = ctRegex!(`(?:^|\s~\s*)format:\s+(?P<matched>.+)$`,         "m");
+  static source            = ctRegex!(`(?:^|\s~\s*)source:\s+(?P<matched>.+)$`,         "m");
+  static language          = ctRegex!(`(?:^|\s~\s*)language:\s+(?P<matched>.+)$`,       "m");
+  static relation          = ctRegex!(`(?:^|\s~\s*)relation:\s+(?P<matched>.+)$`,       "m");
+  static coverage          = ctRegex!(`(?:^|\s~\s*)coverage:\s+(?P<matched>.+)$`,       "m");
+  static rights            = ctRegex!(`(?:^|\s~\s*)rights:\s+(?P<matched>.+)$`,         "m");
+  static comment           = ctRegex!(`(?:^|\s~\s*)comment:\s+(?P<matched>.+)$`,        "m");
+  // static abstract_         = ctRegex!(`(?:^|\s~\s*)abstract:\s+(?P<matched>.+)$`,       "m");
+  static src_filename_base = ctRegex!(`^src_filename_base:\s+(?P<matched>.+)$`,         "m");
+}
+auto rgx  = Rgx();
+#+END_SRC
+
+**** search fields
+
+#+NAME: spine_search_searchfields
+#+BEGIN_SRC d
+struct searchFields {
+  string canned_query      = ""; // GET  canned_query     == cq
+  string search_text_area  = ""; // POST search_text_area == tsa
+  string text              = ""; // text              == txt
+  string author            = ""; // author            == au
+  string title             = ""; // title             == ti
+  string uid               = ""; // uid               == uid
+  string fn                = ""; // fn                == fn
+  string keywords          = ""; // keywords          == kw
+  string topic_register    = ""; // topic_register    == tr
+  string subject           = ""; // subject           == su
+  string description       = ""; // description       == de
+  string publisher         = ""; // publisher         == pb
+  string editor            = ""; // editor            == ed
+  string contributor       = ""; // contributor       == ct
+  string date              = ""; // date              == dt
+  string format            = ""; // format            == fmt
+  string source            = ""; // source            == src sfn
+  string language          = ""; // language          == lng
+  string relation          = ""; // relation          == rl
+  string coverage          = ""; // coverage          == cv
+  string rights            = ""; // rights            == rgt
+  string comment           = ""; // comment           == cmt
+  // string abstract          = "";
+  string src_filename_base = ""; // src_filename_base == bfn
+  string results_type      = ""; // results_type      == rt     radio
+  string sql_match_limit   = ""; // sql_match_limit   == sml    radio
+  string sql_match_offset  = ""; // sql_match_offset  == smo
+  string stats             = ""; // stats             == sts    checked
+  string echo              = ""; // echo              == ec     checked
+  string url               = ""; // url               == url    checked
+  string searched          = ""; // searched          == se     checked
+  string sql               = ""; // sql               == sql    checked
+}
+auto got  = searchFields();
+#+END_SRC
+
+**** post
+
+#+NAME: spine_search_post
+#+BEGIN_SRC d
+if (environment.get("REQUEST_METHOD", "POST") == "POST") {
+  if ("sf" in cgi.post) {
+    got.search_text_area =  cgi.post["sf"];
+    if (auto m = got.search_text_area.matchFirst(rgx.text)) {
+      got.text = m["matched"];
+      got.canned_query ~= "sf=" ~ m["matched"];
+    } else if (auto m = got.search_text_area.matchFirst(rgx.line)) {
+      if (
+        !(m["matched"].matchFirst(rgx.author))
+        && !(m["matched"].matchFirst(rgx.title))
+      ) {
+        got.text = m["matched"];
+        got.canned_query ~= "sf=" ~ m["matched"];
+      }
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.author)) {
+      got.author = m["matched"];
+      got.canned_query ~= "&au=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.title)) {
+      got.title = m["matched"];
+      got.canned_query ~= "&ti=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.uid)) {
+      got.uid = m["matched"];
+      got.canned_query ~= "&uid=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.fn)) {
+      got.fn = m["matched"];
+      got.canned_query ~= "&fn=" ~ m["matched"];
+    } else if ("fn" in cgi.post) {
+      got.search_text_area ~= "\nfn: " ~ cgi.post["fn"] ~ "\n";
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.keywords)) {
+      got.keywords = m["matched"];
+      got.canned_query ~= "&kw=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.topic_register)) {
+      got.topic_register = m["matched"];
+      got.canned_query ~= "&tr=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.subject)) {
+      got.subject = m["matched"];
+      got.canned_query ~= "&su=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.description)) {
+      got.description = m["matched"];
+      got.canned_query ~= "&de=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.publisher)) {
+      got.publisher = m["matched"];
+      got.canned_query ~= "&pb=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.editor)) {
+      got.editor = m["matched"];
+      got.canned_query ~= "&ed=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.contributor)) {
+      got.contributor = m["matched"];
+      got.canned_query ~= "&ct=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.date)) {
+      got.date = m["matched"];
+      got.canned_query ~= "&dt=" ~ m["matched"];
+    }
+    // if (auto m = got.search_text_area.matchFirst(rgx.results_type)) {
+    //   got.results_type = m["matched"];
+    //   got.canned_query ~= "&rt=" ~ m["matched"];
+    // }
+    if (auto m = got.search_text_area.matchFirst(rgx.format)) {
+      got.format = m["matched"];
+      got.canned_query ~= "&fmt=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.source)) {
+      got.source = m["matched"];
+      got.canned_query ~= "&src=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.language)) {
+      got.language = m["matched"];
+      got.canned_query ~= "&lng=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.relation)) {
+      got.relation = m["matched"];
+      got.canned_query ~= "&rl=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.coverage)) {
+      got.coverage = m["matched"];
+      got.canned_query ~= "&cv=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.rights)) {
+      got.rights = m["matched"];
+      got.canned_query ~= "&rgt=" ~ m["matched"];
+    }
+    if (auto m = got.search_text_area.matchFirst(rgx.comment)) {
+      got.comment = m["matched"];
+      got.canned_query ~= "&cmt=" ~ m["matched"];
+    }
+    // if (auto m = search_text_area.matchFirst(rgx.abstract)) {
+    //   got.abstract = m["matched"];
+    // }
+    if (auto m = got.search_text_area.matchFirst(rgx.src_filename_base)) {
+      got.src_filename_base = m["matched"];
+      got.canned_query ~= "&bfn=" ~ m["matched"];
+    }
+  }
+  if ("fn" in cgi.post) {
+    got.fn =  cgi.post["fn"];
+    got.canned_query ~= "&fn=" ~ cgi.post["fn"];
+  }
+  if ("rt" in cgi.post) {
+    got.results_type =  cgi.post["rt"];
+    got.canned_query ~= "&rt=" ~ cgi.post["rt"];
+  }
+  if ("sts" in cgi.post) {
+    got.stats =  cgi.post["sts"];
+    got.canned_query ~= "&sts=" ~ cgi.post["sts"];
+  }
+  if ("ec" in cgi.post) {
+    got.echo =  cgi.post["ec"];
+    got.canned_query ~= "&ec=" ~ cgi.post["ec"];
+  }
+  if ("url" in cgi.post) {
+    got.url =  cgi.post["url"];
+    got.canned_query ~= "&url=" ~ cgi.post["url"];
+  }
+  if ("se" in cgi.post) {
+    got.searched =  cgi.post["se"];
+    got.canned_query ~= "&se=" ~ cgi.post["se"];
+  }
+  if ("sql" in cgi.post) {
+    got.sql =  cgi.post["sql"];
+    got.canned_query ~= "&sql=" ~ cgi.post["sql"];
+  }
+  if ("sml" in cgi.post) {
+    got.sql_match_limit =  cgi.post["sml"];
+    got.canned_query ~= "&sml=" ~ cgi.post["sml"];
+  }
+  if ("smo" in cgi.post) {
+    got.sql_match_offset = "0";   // cgi.post["smo"];
+    got.canned_query ~= "&smo=0"; //  ~ cgi.post["smo"];
+  }
+  got.canned_query = got.canned_query.strip.split(" ").join("%20");
+  conf.query_string = got.canned_query;
+  // cgi.write("f.canned_query: " ~ got.canned_query ~ "<br>");
+} else if (environment.get("REQUEST_METHOD", "POST") == "GET") {
+  got.canned_query = environment.get("QUERY_STRING", "");
+  // cgi.write("f.canned_query: " ~ got.canned_query ~ "<br>");
+  got.search_text_area = "";
+  if ("sf" in canned_query && !(canned_query["sf"]).empty) {
+    got.text = canned_query["sf"].split("%20").join(" ");
+    got.search_text_area ~= "text: " ~ got.text ~ "\n";
+  }
+  if ("au" in canned_query && !(canned_query["au"]).empty) {
+    got.author = canned_query["au"].split("%20").join(" ");
+    got.search_text_area ~= "author: " ~ got.author ~ "\n";
+  }
+  if ("ti" in canned_query && !(canned_query["ti"]).empty) {
+    got.title = canned_query["ti"].split("%20").join(" ");
+    got.search_text_area ~= "title: " ~ got.title ~ "\n";
+  }
+  if ("uid" in canned_query && !(canned_query["uid"]).empty) {
+    got.uid = canned_query["uid"].split("%20").join(" ");
+    got.search_text_area ~= "uid: " ~ got.uid ~ "\n";
+  }
+  if ("fn" in canned_query && !(canned_query["fn"]).empty) {
+    got.fn = canned_query["fn"].split("%20").join(" ");
+    got.search_text_area ~= "fn: " ~ got.fn ~ "\n";
+  }
+  if ("kw" in canned_query && !(canned_query["kw"]).empty) {
+    got.keywords = canned_query["kw"].split("%20").join(" ");
+    got.search_text_area ~= "keywords: " ~ got.keywords ~ "\n";
+  }
+  if ("tr" in canned_query && !(canned_query["tr"]).empty) {
+    got.topic_register = canned_query["tr"].split("%20").join(" ");
+    got.search_text_area ~= "topic_register: " ~ got.topic_register ~ "\n";
+  }
+  if ("su" in canned_query && !(canned_query["su"]).empty) {
+    got.subject = canned_query["su"].split("%20").join(" ");
+    got.search_text_area ~= "subject: " ~ got.subject ~ "\n";
+  }
+  if ("de" in canned_query && !(canned_query["de"]).empty) {
+    got.description = canned_query["de"].split("%20").join(" ");
+    got.search_text_area ~= "description: " ~ got.description ~ "\n";
+  }
+  if ("pb" in canned_query && !(canned_query["pb"]).empty) {
+    got.publisher = canned_query["pb"].split("%20").join(" ");
+    got.search_text_area ~= "publisher: " ~ got.publisher ~ "\n";
+  }
+  if ("ed" in canned_query && !(canned_query["ed"]).empty) {
+    got.editor = canned_query["ed"].split("%20").join(" ");
+    got.search_text_area ~= "editor: " ~ got.editor ~ "\n";
+  }
+  if ("ct" in canned_query && !(canned_query["ct"]).empty) {
+    got.contributor = canned_query["ct"].split("%20").join(" ");
+    got.search_text_area ~= "contributor: " ~ got.contributor ~ "\n";
+  }
+  if ("dt" in canned_query && !(canned_query["dt"]).empty) {
+    got.date = canned_query["dt"].split("%20").join(" ");
+    got.search_text_area ~= "date: " ~ got.date ~ "\n";
+  }
+  if ("rt" in canned_query && !(canned_query["rt"]).empty) {
+    got.results_type = canned_query["rt"].split("%20").join(" ");
+    // got.search_text_area ~= "results_type: " ~ got.results_type ~ "\n";
+  }
+  if ("fmt" in canned_query && !(canned_query["fmt"]).empty) {
+    got.format = canned_query["fmt"].split("%20").join(" ");
+    got.search_text_area ~= "format: " ~ got.format ~ "\n";
+  }
+  if ("src" in canned_query && !(canned_query["src"]).empty) {
+    got.source = canned_query["src"].split("%20").join(" ");
+    got.search_text_area ~= "source: " ~ got.source ~ "\n";
+  }
+  if ("lng" in canned_query && !(canned_query["lng"]).empty) {
+    got.language = canned_query["lng"].split("%20").join(" ");
+    got.search_text_area ~= "language: " ~ got.language ~ "\n";
+  }
+  if ("rl" in canned_query && !(canned_query["rl"]).empty) {
+    got.relation = canned_query["rl"].split("%20").join(" ");
+    got.search_text_area ~= "relation: " ~ got.relation ~ "\n";
+  }
+  if ("cv" in canned_query && !(canned_query["cv"]).empty) {
+    got.coverage = canned_query["cv"].split("%20").join(" ");
+    got.search_text_area ~= "coverage: " ~ got.coverage ~ "\n";
+  }
+  if ("rgt" in canned_query && !(canned_query["rgt"]).empty) {
+    got.rights = canned_query["rgt"].split("%20").join(" ");
+    got.search_text_area ~= "rights: " ~ got.rights ~ "\n";
+  }
+  if ("cmt" in canned_query && !(canned_query["cmt"]).empty) {
+    got.comment = canned_query["cmt"].split("%20").join(" ");
+    got.search_text_area ~= "comment: " ~ got.comment ~ "\n";
+  }
+  // if ("abstract" in canned_query && !(canned_query["abstract"]).empty) {
+  //   got.abstract = canned_query["abstract"];
+  // }
+  if ("bfn" in canned_query && !(canned_query["bfn"]).empty) { // search_field
+    got.src_filename_base = canned_query["bfn"].split("%20").join(" ");
+    got.search_text_area ~= "src_filename_base: " ~ got.src_filename_base ~ "\n";
+  }
+  if ("sml" in canned_query && !(canned_query["sml"]).empty) {
+    got.sql_match_limit = canned_query["sml"].split("%20").join(" ");
+    // got.search_text_area ~= "sql_match_limit: " ~ got.sql_match_limit ~ "\n";
+  }
+  // cgi.write("f.search_text_area: " ~ got.search_text_area ~ "<br>");
+}
+#+END_SRC
+
+**** show_matched_objects (string fn) {}
+
+#+NAME: spine_search_show_matched_objects
+#+BEGIN_SRC d
+auto rgx = regex_canned_search;
+string _matched_objects_text = "";
+string _url = canned_url;
+string _url_new = "";
+string _matches_show_text  = "&rt=txt";
+string _matches_show_index = "&rt=idx";
+string _fn = "&fn=" ~ fn;
+_url_new = _url;
+if (_url_new.match(rgx.results_type_index)) {
+  _url_new = _url_new.replace(rgx.results_type_index, _matches_show_text);
+} else if (_url.match(rgx.results_type_text)) {
+  _url_new = _url_new.replace(rgx.results_type_text, _matches_show_index);
+} else {
+  if (!(_url.match(rgx.results_type))) {
+    _url_new = _url ~ _matches_show_text;
+  }
+}
+if (!(_url_new.match(rgx.fn))) {
+  _url_new = _url_new ~ _fn;
+}
+_matched_objects_text =
+  "<font-size=\"2rem\" color=\"#666666\">"
+  ~ "<a href=\""
+  ~ _url_new
+  ~ "\">"
+  ~ "※"
+  ~ "</a></font>";
+return _matched_objects_text;
+#+END_SRC
+
+**** previous_next () {}
+
+#+NAME: spine_search_previous_next
+#+BEGIN_SRC d
+auto rgx = regex_canned_search;
+string _previous_next = "";
+int    _current_offset_value = 0;
+string _set_offset_next = "";
+string _set_offset_previous = "";
+string _url = canned_url;
+string _url_previous = "";
+string _url_next = "";
+string arrow_previous = "";
+string arrow_next = "";
+if (auto m = _url.matchFirst(rgx.track_offset)) {
+  _current_offset_value = m.captures["offset_val"].to!int;
+  _set_offset_next = m.captures["offset_key"] ~ ((m.captures["offset_val"]).to!int + cv.sql_match_limit.to!int).to!string;
+  _url_next = _url.replace(rgx.track_offset, _set_offset_next);
+  if (_current_offset_value < cv.sql_match_limit.to!int) {
+    _url_previous = "";
+  } else {
+    _url_previous = "";
+    _set_offset_previous = m.captures["offset_key"] ~ ((m.captures["offset_val"]).to!int - cv.sql_match_limit.to!int).to!string;
+    _url_previous = _url.replace(rgx.track_offset, _set_offset_previous);
+  }
+} else { // _current_offset_value = 0;
+  _url_next = _url ~= "&smo=" ~ cv.sql_match_limit.to!string;
+}
+if (_url_previous.empty) {
+  arrow_previous = "";
+} else {
+  arrow_previous =
+    "<font-size=\"1.8rem\" color=\"#666666\">"
+    ~ "<a href=\""
+    ~ _url_previous
+    ~ "\">"
+    ~ "&lt;&lt prev"
+    ~ "</a> || </font>";
+}
+arrow_next =
+  "<font-size=\"1.8rem\" color=\"#666666\">"
+  ~ "<a href=\""
+  ~ _url_next
+  ~ "\">"
+  ~ "next &gt;&gt"
+  ~ "</a></font>";
+_previous_next = "<hr>" ~ arrow_previous ~ arrow_next;
+return _previous_next;
+#+END_SRC
+
+**** format html header
+
+#+NAME: spine_search_format_html_header
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+    header = format(q"┃
+<!DOCTYPE html>
+<html>
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <title>
+    %s
+  </title>
+  <meta name="sourcefile" content="SiSU.sst">
+  <link rel="generator" href="sisudoc.org">
+  <link rel="shortcut icon" href="%s://%s/image_sys/spine.ico">
+  <style media = "all">
+    <<spine_search_css>>
+  </style>
+</head>
+<body lang="en" xml:lang="en">
+┃",
+    conf.cgi_search_form_title,
+    conf.http_request_type,
+    conf.http_host,
+   );
+#+END_SRC
+
+**** format html table
+
+#+NAME: spine_search_format_html_table
+#+BEGIN_SRC d
+  table = format(q"┃
+<table summary="band" border="0" cellpadding="2" cellspacing="0">
+<tr><td width="20%%">
+ <table summary="home button / home information" border="0" cellpadding="2" cellspacing="0">
+ <tr><td align="left">
+   %s
+ </td></tr>
+ </table>
+</td>
+<td>
+</td></tr>
+</table>
+  ┃",
+    conf.cgi_search_form_html_title,
+  );
+#+END_SRC
+
+**** post_value(string field_name, string type="box", string set="on") {}
+
+#+NAME: spine_search_post_value
+#+BEGIN_SRC d
+string val = "";
+switch (type) {
+case "field":
+  val = ((field_name in cgi.post && !(cgi.post[field_name]).empty)
+    ? cgi.post[field_name]
+    : (field_name in cgi.get)
+      ? cgi.get[field_name]
+      : "");
+  val = tf.search_text_area;
+  break;
+case "box": // generic for checkbox or radio; checkbox set == "on" radio set == "name set"
+  val = ((field_name in cgi.post && !(cgi.post[field_name]).empty)
+    ? (cgi.post[field_name]  == set ? "checked" : "off")
+    : (field_name in cgi.get)
+      ? (cgi.get[field_name] == set ? "checked" : "off")
+      :                               "off");
+  break;
+case "radio": // used generic bo
+  val = ((field_name in cgi.post && !(cgi.post[field_name]).empty)
+    ? (cgi.post[field_name]  == set ? "checked" : "off")
+    : (field_name in cgi.get)
+      ? (cgi.get[field_name] == set ? "checked" : "off")
+      :                               "checked");
+  break;
+case "checkbox": // used generic bo
+  val = ((field_name in cgi.post && !(cgi.post[field_name]).empty)
+    ? (cgi.post[field_name]  == set ? "checked" : "off")
+    : (field_name in cgi.get)
+      ? (cgi.get[field_name] == set ? "checked" : "off")
+      :                               "checked");
+  break;
+default:
+}
+return val;
+#+END_SRC
+
+**** string the_can(string fv) {}
+
+#+NAME: spine_search_the_can
+#+BEGIN_SRC d
+string show_the_can = post_value("url");
+string _the_can = "";
+if (show_the_can == "checked") {
+  tf = text_fields;
+  string method_get_url            = conf.query_base_url ~ environment.get("QUERY_STRING", "");
+  string method_post_url_construct = conf.query_base_url ~ tf.canned_query;
+  // assert(method_get_url == environment.get("HTTP_REFERER", conf.query_base_url ~ conf.query_string));
+  if (conf.request_method == "POST") {
+    _the_can =
+      "<font-size=\"1rem\" color=\"#666666\">"
+      ~ "POST:&nbsp;"
+      ~ "<a href=\""
+      ~ method_post_url_construct
+      ~ "\">"
+      ~ method_post_url_construct
+      ~ "</a></font>"
+      ~ "<br>";
+  } else if (conf.request_method == "GET") {
+    _the_can =
+      "<font-size=\"1rem\" color=\"#666666\">"
+      ~ "GET:&nbsp;&nbsp;"
+      ~ "<a href=\""
+      ~ method_get_url
+      ~ "\">"
+      ~ method_get_url
+      ~ "</a></font>";
+  }
+  conf.http_url = conf.http_request_type ~ "://" ~ conf.http_host ~ conf.cgi_script_name ~ tf.canned_query;
+}
+return _the_can;
+#+END_SRC
+
+**** string provide_tip() {}
+
+#+NAME: spine_search_provide_tip
+#+BEGIN_SRC d
+string searched_tip = post_value("se");
+string tip = "";
+if (searched_tip == "checked") {
+  string search_field = post_value("sf", "field");
+  tf = text_fields;
+  tip = format(q"┃
+<font-size="1rem" color="#666666">
+<b>database:</b> <font-size="1rem" color="#004000">%s</font>; <b>selected view:</b> <font-size="2" color="#004000">index</font>
+<b>search string:</b> %s %s %s %s %s %s<br>
+%s %s %s %s %s %s
+</font>
+┃",
+    cv.db_selected,
+    (tf.text.empty   ? "" : "\"text:   <font-size=\"1rem\" color=\"#004000\">" ~ tf.text   ~ "</font>; "),
+    (tf.title.empty  ? "" : "\"title:  <font-size=\"1rem\" color=\"#004000\">" ~ tf.title  ~ "</font>; "),
+    (tf.author.empty ? "" : "\"author: <font-size=\"1rem\" color=\"#004000\">" ~ tf.author ~ "</font>; "),
+    (tf.date.empty   ? "" : "\"date    <font-size=\"1rem\" color=\"#004000\">" ~ tf.date   ~ "</font>; "),
+    (tf.uid.empty    ? "" : "\"uid:    <font-size=\"1rem\" color=\"#004000\">" ~ tf.uid    ~ "</font>; "),
+    (tf.fn.empty     ? "" : "\"fn:     <font-size=\"1rem\" color=\"#004000\">" ~ tf.fn     ~ "</font>; "),
+    (tf.text.empty   ? "" :  "text:    <font-size=\"1rem\" color=\"#004000\">" ~ tf.text   ~ "</font><br>"),
+    (tf.title.empty  ? "" : "title:    <font-size=\"1rem\" color=\"#004000\">" ~ tf.title  ~ "</font><br>"),
+    (tf.author.empty ? "" :  "author:  <font-size=\"1rem\" color=\"#004000\">" ~ tf.author ~ "</font><br>"),
+    (tf.date.empty   ? "" :  "date:    <font-size=\"1rem\" color=\"#004000\">" ~ tf.date   ~ "</font><br>"),
+    (tf.uid.empty    ? "" : "\"uid:    <font-size=\"1rem\" color=\"#004000\">" ~ tf.uid    ~ "</font>; "),
+    (tf.fn.empty     ? "" : "\"fn:     <font-size=\"1rem\" color=\"#004000\">" ~ tf.fn     ~ "</font>; "),
+  );
+}
+return tip;
+#+END_SRC
+
+**** form
+
+#+NAME: spine_search_form
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+    form = format(q"┃
+<<spine_search_form_html>>
+┃",
+      _cfg.cgi_filename,
+      (post_value("ec") == "checked") ? post_value("sf", "field") : "",
+      provide_tip,
+      search_note,
+      the_can(post_value("sf", "field")),
+      cv.db_selected,
+      post_value("rt",  "box", "idx"),
+      post_value("rt",  "box", "txt"),
+      post_value("sml", "box", "1000"),
+      post_value("sml", "box", "2500"),
+      post_value("ec"),
+      post_value("url"),
+      post_value("se"),
+      post_value("sql"),
+    );
+#+END_SRC
+
+#+NAME: spine_search_form_html
+#+BEGIN_SRC html
+<form action="%s" id="SubmitForm" method="post" accept-charset="UTF-8">
+  <table cellpadding="2">
+  <tr><td valign=\"top\">
+      <textarea id="find" name="sf" type="text" rows="6" cols="40" maxlength="256" wrap="virtual">%s</textarea>
+  </td>
+  <td valign=\"top\">
+    %s
+    %s
+    %s
+  </td></tr></table>
+  <td valign=\"top\"><tr><td>
+    <font-size="1rem" color="#222222">
+    <input type="hidden" name="db" value="%s">
+    <input type="submit" value="※ SiSU search">
+    <input type="radio" name="rt" id="results_type_index" value="idx" %s> index
+    <input type="radio" name="rt" id="results_type_text" value="txt" %s> text / grep;
+    match limit:
+    <input type="radio" name="sml" id="sql_match_limit_1000" value="1000" %s> 1,000
+    <input type="radio" name="sml" id="sql_match_limit_2500" value="2500" %s> 2,500
+    <br>
+      <input type="checkbox" name="ec" %s> echo query
+      <input type="checkbox" name="url" %s> search url
+      <input type="checkbox" name="se" %s> searched
+      <input type="checkbox" name="sql" %s> sql statement
+      <input type="hidden" name="smo" value="0">
+    <br>
+    </font>
+  </td></tr>
+  </table>
+</form>
+#+END_SRC
+
+**** set_value(string field_name, string default_val) {}
+
+#+NAME: spine_search_set_value
+#+BEGIN_SRC d
+string val;
+if (field_name in cgi.post) {
+  val = cgi.post[field_name];
+} else if (field_name in cgi.get) {
+  val = cgi.get[field_name];
+} else { val = default_val; }
+return val;
+#+END_SRC
+
+**** set_bool(string field_name) {}
+
+#+NAME: spine_search_set_bool
+#+BEGIN_SRC d
+bool val;
+if (field_name in cgi.post
+&& cgi.post[field_name] == "on") {
+  val = true;
+} else if (field_name in cgi.get
+&& cgi.get[field_name] == "on") {
+  val = true;
+} else { val = false; }
+return val;
+#+END_SRC
+
+**** set selections
+
+#+NAME: spine_search_set_selections
+#+BEGIN_SRC d
+cv.db_selected      = set_value("selected_db", _cfg.db_sqlite_filename); // selected_db_name == db (spine.search.db or whatever)
+cv.sql_match_limit  = set_value("sml",         "1000");
+cv.sql_match_offset = set_value("smo",         "0");
+cv.search_text      = set_value("sf",          "");
+cv.results_type     = set_value("rt",          "idx");
+cv.checked_echo     = set_bool("ec");
+cv.checked_stats    = set_bool("sts");
+cv.checked_url      = set_bool("url");
+cv.checked_searched = set_bool("se");
+cv.checked_tip      = set_bool("tip");
+cv.checked_sql      = set_bool("sql");
+tf = text_fields;
+#+END_SRC
+
+**** string highlight_text_matched(string _txt, string search_field) {}
+
+#+NAME: spine_search_query_highlight_text_matched
+#+BEGIN_SRC d
+string _mark_open   = "┤";
+string _mark_close  = "├";
+string _span_match = "<span class=\"match\">";
+string _span_close  = "</span>";
+string _sf_str      = search_field.strip.split("%20").join(" ").strip;
+string[] _sf_arr    = _sf_str.split(regex(r"\s+AND\s+|\s+OR\s+"));
+auto rgx_url        = regex(r"<a href=[^>]+?>");
+foreach (_sf; _sf_arr) {
+  auto rgx_matched_text = regex(_sf, "i");
+  auto rgx_marked_pair  = regex(r"┤(?P<keep>" ~ _sf ~ ")├", "i");
+  if (auto m = _txt.matchFirst(rgx_url)) {
+    _txt = replaceAll!(m =>
+        _mark_open
+        ~  m.captures[0]
+        ~ _mark_close
+      )(_txt, rgx_matched_text);
+    _txt = replaceAll!(m =>
+        replaceAll!(u =>
+          u["keep"]
+        )(m.hit, rgx_marked_pair)
+      )(_txt, rgx_url);
+    _txt = replaceAll!(m =>
+        _span_match
+        ~  m["keep"]
+        ~ _span_close
+      )(_txt, rgx_marked_pair);
+  } else {
+    _txt = replaceAll!(m =>
+        _span_match
+        ~  m.captures[0]
+        ~ _span_close
+      )(_txt, rgx_matched_text);
+  }
+}
+return _txt;
+#+END_SRC
+
+**** string select_field_like(string db_field, string search_field) {}
+
+#+NAME: spine_search_query_select_field_like
+#+BEGIN_SRC d
+string where_ = "";
+if (!(search_field.empty)) {
+  string _sf = search_field.strip.split("%20").join(" ");
+  if (_sf.match(r" OR ")) {
+    _sf = _sf.split(" OR ").join("%' OR " ~ db_field ~ " LIKE '%");
+  }
+  if (_sf.match(r" AND ")) {
+    _sf = _sf.split(" AND ").join("%' AND " ~ db_field ~ " LIKE '%");
+  }
+  _sf = "( " ~ db_field ~ " LIKE\n  '%" ~ _sf ~ "%' )";
+  where_ ~= format(q"┃
+  %s
+┃",
+    _sf
+  );
+}
+return where_;
+#+END_SRC
+
+**** query fields
+
+#+NAME: spine_search_query_fields
+#+BEGIN_SRC d
+string[] _fields;
+_fields ~= select_field_like("doc_objects.clean",                         tf.text);
+_fields ~= select_field_like("metadata_and_text.title",                   tf.title);
+_fields ~= select_field_like("metadata_and_text.creator_author",          tf.author);
+_fields ~= select_field_like("metadata_and_text.uid",                     tf.uid);
+_fields ~= select_field_like("metadata_and_text.src_filename_base",       tf.fn);
+_fields ~= select_field_like("metadata_and_text.src_filename_base",       tf.src_filename_base);
+_fields ~= select_field_like("metadata_and_text.language_document_char",  tf.language);
+_fields ~= select_field_like("metadata_and_text.date_published",          tf.date);
+_fields ~= select_field_like("metadata_and_text.classify_keywords",       tf.keywords);
+_fields ~= select_field_like("metadata_and_text.classify_topic_register", tf.topic_register);
+string[] fields;
+foreach (f; _fields) {
+  if (!(f.empty)) { fields ~= f; }
+}
+string fields_str = "";
+fields_str ~= fields.join(" AND ");
+#+END_SRC
+
+**** the body format sql select
+
+#+NAME: spine_search_query_format_sql_select_the_body
+#+BEGIN_SRC d
+      sql_select.the_body ~= format(q"┃
+SELECT
+  metadata_and_text.uid,
+  metadata_and_text.title,
+  metadata_and_text.creator_author_last_first,
+  metadata_and_text.creator_author,
+  metadata_and_text.src_filename_base,
+  metadata_and_text.language_document_char,
+  metadata_and_text.date_published,
+  metadata_and_text.classify_keywords,
+  metadata_and_text.classify_topic_register,
+  doc_objects.body,
+  doc_objects.seg_name,
+  doc_objects.ocn,
+  doc_objects.lev,
+  doc_objects.is_a,
+  metadata_and_text.uid
+FROM
+  doc_objects,
+  metadata_and_text
+WHERE (
+  %s
+  )
+AND
+  doc_objects.uid_metadata_and_text = metadata_and_text.uid
+ORDER BY
+  metadata_and_text.creator_author_last_first,
+  metadata_and_text.date_published DESC,
+  metadata_and_text.title,
+  metadata_and_text.language_document_char,
+  metadata_and_text.src_filename_base,
+  doc_objects.ocn
+LIMIT %s OFFSET %s
+;┃",
+        fields_str,
+        cv.sql_match_limit,
+        cv.sql_match_offset,
+      );
+#+END_SRC
+
+**** cgi writes
+
+#+NAME: spine_search_cgi_writes
+#+BEGIN_SRC d
+(cv.checked_sql)
+? cgi.write(previous_next
+    ~ "<hr><font-size=\"1rem\" color=\"#666666\">"
+    ~ sql_select.the_body.strip.split("\n  ").join(" ").split("\n").join("<br>")
+    ~ "</font>\n"
+  )
+: "";
+cgi.write(previous_next);
+auto select_query_results = db.execute(sql_select.the_body).cached;
+string _old_uid = "";
+if (!select_query_results.empty) {
+  string _date_published = "0000";
+  string _close_para = "";
+  string _matched_ocn_open = "";
+  foreach (idx, row; select_query_results) {
+    if (row["uid"].as!string != _old_uid) {
+      _close_para = (idx == 1) ? "" : "</p>";
+      _matched_ocn_open = (idx == 1) ? "" : "<p class=\"matched_ocn\">";
+      _old_uid = row["uid"].as!string;
+      _date_published = (row["date_published"].as!string.match(regex(r"^([0-9]{4})")))
+      ? row["date_published"].as!string : "0000"; // used in regex that breaks if no match
+      auto m = _date_published.match(regex(r"^([0-9]{4})"));
+      string _date = (m.hit == "0000") ? "(year?) " : "(" ~ m.hit ~ ") ";
+      cgi.write(
+        _close_para
+        ~ "<hr><div class=\"publication\">"
+          ~ "<p class=\"publication\"><a href=\""
+            ~ conf.http_request_type ~ "://"
+            ~ conf.http_host ~ conf.doc_collection_subroot ~ "/"
+            ~ row["language_document_char"].as!string ~ "/html/"
+            ~ row["src_filename_base"].as!string ~ "/"
+            ~ "toc.html"
+          ~ "\">\""
+            ~ row["title"].as!string ~ "\""
+          ~ "</a> "
+          ~ _date
+          ~ "[" ~ row["language_document_char"].as!string ~ "] "
+          ~ row["creator_author_last_first"].as!string
+          ~ " "
+          ~ show_matched_objects(row["src_filename_base"].as!string)
+          ~ "</p>"
+        ~ "</div>"
+      );
+    }
+    if (cv.results_type == "txt") {
+      string _sfn, _id;
+      if ((row["lev"].as!int < 4)
+      || (row["ocn"].as!string == "0")) {
+        if (row["is_a"].as!string == "bookindex") {
+          _sfn = "bookindex";
+          _id = "idx";
+        } else if (row["is_a"].as!string == "blurb") {
+          _sfn = "blurb";
+          _id = "bm";
+        } else {
+          _sfn = "toc";
+          _id = row["ocn"].as!string;
+        }
+        cgi.write(
+          "<div class=\"flex-container\">"
+          ~ "<div class=\"textview_ocn\" style=\"flex: 0 0 1.2em\">"
+            ~ "<p class=\"ocn_is\"><a href=\""
+              ~ conf.http_request_type ~ "://"
+              ~ conf.http_host ~ conf.doc_collection_subroot ~ "/"
+              ~ row["language_document_char"].as!string ~ "/html/"
+              ~ row["src_filename_base"].as!string ~ "/"
+              ~ _sfn ~ ".html"
+            ~ "\">"
+              ~ _id
+            ~ "</a>:</p>"
+          ~ "</div>"
+          ~ "<div class=\"textview_found\">"
+            ~ highlight_text_matched(row["body"].as!string, tf.text)
+          ~ "</div>"
+          ~ "</div>"
+        );
+      } else {
+        if (row["is_a"].as!string == "bibliography") {
+          _id = row["ocn"].as!string ~ "b";
+          _sfn = "bibliography";
+        } else if (row["is_a"].as!string == "glossary") {
+          _id = row["ocn"].as!string ~ "g";
+          _sfn = "glossary";
+        } else {
+          _id = row["ocn"].as!string;
+          _sfn = row["seg_name"].as!string;
+        }
+        cgi.write(
+          "<div class=\"flex-container\">"
+          ~ "<div class=\"textview_ocn\" style=\"flex: 0 0 1.2em\">"
+            ~ "<p class=\"ocn_is\"><a href=\""
+              ~ conf.http_request_type ~ "://"
+              ~ conf.http_host ~ conf.doc_collection_subroot ~ "/"
+              ~ row["language_document_char"].as!string ~ "/html/"
+              ~ row["src_filename_base"].as!string ~ "/"
+              ~ _sfn ~ ".html#" ~ row["ocn"].as!string
+            ~ "\">"
+              ~  _id
+            ~ "</a>:</p>"
+          ~ "</div>"
+          ~ "<div class=\"textview_found\">"
+            ~ highlight_text_matched(row["body"].as!string, tf.text)
+          ~ "</div>"
+          ~ "</div>"
+        );
+      }
+    } else {
+      string _sfn, _id;
+      if ((row["lev"].as!int < 4)
+      || (row["ocn"].as!string == "0")) {
+        if (row["is_a"].as!string == "bookindex") {
+          _sfn = "bookindex";
+          _id = "i";
+        } else if (row["is_a"].as!string == "blurb") {
+          _sfn = "blurb";
+          _id = "bm";
+        } else {
+          _sfn = "toc";
+          _id = row["ocn"].as!string;
+        }
+        cgi.write(
+          _matched_ocn_open
+          ~ "<a href=\""
+            ~ conf.http_request_type ~ "://"
+            ~ conf.http_host ~ conf.doc_collection_subroot ~ "/"
+            ~ row["language_document_char"].as!string ~ "/html/"
+            ~ row["src_filename_base"].as!string ~ "/"
+            ~ _sfn ~ ".html"
+          ~ "\">"
+            ~ _id
+          ~ "</a>, "
+        );
+      } else {
+        if (row["is_a"].as!string == "bibliography") {
+          _id = row["ocn"].as!string ~ "b";
+          _sfn = "bibliography";
+        } else if (row["is_a"].as!string == "glossary") {
+          _id = row["ocn"].as!string ~ "g";
+          _sfn = "glossary";
+        } else {
+          _id = row["ocn"].as!string;
+          _sfn = row["seg_name"].as!string;
+        }
+        cgi.write(
+          _matched_ocn_open
+          ~ "<a href=\""
+            ~ conf.http_request_type ~ "://"
+            ~ conf.http_host ~ conf.doc_collection_subroot ~ "/"
+            ~ row["language_document_char"].as!string ~ "/html/"
+            ~ row["src_filename_base"].as!string ~ "/"
+            ~ _sfn ~ ".html#" ~ row["ocn"].as!string
+          ~ "\">"
+            ~  _id
+          ~ "</a>, "
+        );
+      }
+      _matched_ocn_open = "";
+    }
+  }
+  cgi.write( previous_next);
+} else { // offset_not_beyond_limit = false;
+  cgi.write("select_query_results empty<p>\n");
+}
+#+END_SRC
+
+**** cgi write tail
+
+#+NAME: spine_search_cgi_write_tail
+#+BEGIN_SRC d
+      cgi.write("<br><p class=\"center\">
+<label for=\"find\">
+<a href=\"https://sisudoc.org/\" target=\"_top\"><b>≅ SiSU Spine</b></a>
+</label>
+<label for=\"find\">(object numbering &amp; object search) 2022</label>
+<br><a href=\"https://git.sisudoc.org/\" target=\"_top\">git</a>
+</p>
+");
+#+END_SRC
+
+**** debug info
+
+#+NAME: spine_search_debug_info
+#+BEGIN_SRC d
+cgi.write("db with path: "        ~ conf.db_path ~ "/" ~ cv.db_selected ~ "<br>\n");
+cgi.write("http url: "            ~ conf.http_url ~ "<br>\n");
+cgi.write("query base url: "      ~ conf.query_base_url ~ "<br>\n");
+cgi.write("db_selected: "         ~ cv.db_selected ~ "<br>\n");
+cgi.write("search_text: "         ~ cv.search_text ~ "<br>\n");
+cgi.write("sql_match_limit: "     ~ cv.sql_match_limit ~ ";\n");
+cgi.write("sql_match_offset: "    ~ cv.sql_match_offset ~ ";\n");
+cgi.write("results_type: "        ~ cv.results_type ~ "<br>\n");
+cgi.write("cv.checked_echo: "     ~ (cv.checked_echo ? "checked" : "off") ~ "; \n");
+cgi.write("cv.checked_stats: "    ~ (cv.checked_stats ? "checked" : "off") ~ "; \n");
+cgi.write("cv.checked_url: "      ~ (cv.checked_url ? "checked" : "off") ~ "; \n");
+cgi.write("cv.checked_searched: " ~ (cv.checked_searched ? "checked" : "off") ~ ";<br>\n");
+cgi.write("cv.checked_tip: "      ~ (cv.checked_tip ? "checked" : "off") ~ "; \n");
+cgi.write("cv.checked_sql: "      ~ (cv.checked_sql ? "checked" : "off") ~ "<br>\n");
+#+END_SRC
+
+**** css
+
+- if base size is 16px, 62.5% is 10px
+  1rem   == 10px
+  1.6rem == 16px
+
+#+NAME: spine_search_css
+#+BEGIN_SRC css
+html {
+  font-size              : 62.5%%;
+}
+,*{
+  padding                  : 0px;
+  margin                   : 2px;
+}
+body {
+  height                   : 100vh;
+  font-size                : 1.6rem;
+  color                    : #000000;
+  background               : #FFFFFF;
+  background-color         : #FFFFFF;
+}
+a:link {
+  color                    : #003399;
+  text-decoration          : none;
+}
+a:visited {
+  color                    : #003399;
+  text-decoration          : none;
+}
+a:hover {
+  color                    : #000000;
+  background-color         : #F9F9AA;
+}
+a.matched_ocn:link {
+  color                    : #003399;
+  text-decoration          : none;
+}
+a.matched_ocn:visited {
+  color                    : #003399;
+  text-decoration          : none;
+}
+a.matched_ocn:hover {
+  color                    : #000000;
+  background-color         : #F9F9AA;
+  font-size                : 1.6rem;
+}
+a.lnkocn:link {
+  color                    : #777777;
+  text-decoration          : none;
+}
+a.lnkocn:visited {
+  color                    : #32CD32;
+  text-decoration          : none;
+}
+a.lnkocn:hover {
+  color                    : #777777;
+  font-size                : 1.6rem;
+}
+a:hover img {
+  background-color         : #FFFFFF;
+}
+a:active {
+  color                    : #003399;
+  text-decoration          : underline;
+}
+.flex-container {
+  display                  : flex;
+}
+div.publication {
+  margin-top               : 2px;
+  margin-bottom            : 4px;
+  margin-left              : 0%%;
+  margin-right             : 0%%;
+}
+div.textview_ocn {
+  margin-left              : 0%%;
+  margin-right             : 1%%;
+}
+div.textview_found {
+  margin-left              : 1%%;
+  margin-right             : 1%%;
+}
+textarea {
+  color                    : #000000;
+  background-color         : #FFFFFF;
+}
+span.match {
+  color                    : #000000;
+  background-color         : #FFFF48;
+}
+input, select, textarea {
+  font-size                : 2rem;
+}
+input[type="text"] {
+  font-size                : 2rem;
+  line-height              : 150%%;
+}
+button[type="submit"] {
+  font-size                : 2rem;
+  line-height              : 150%%;
+}
+p.norm { }
+p.center { text-align      : center; }
+p.i1 { padding-left        : 1em; }
+p.i2 { padding-left        : 2em; }
+p.i3 { padding-left        : 3em; }
+p.i4 { padding-left        : 4em; }
+p.i5 { padding-left        : 5em; }
+p.i6 { padding-left        : 6em; }
+p.i7 { padding-left        : 7em; }
+p.i8 { padding-left        : 8em; }
+p.i9 { padding-left        : 9em; }
+/* hanging indent */
+p[indent="h0i0"] {
+  padding-left             : 0em;
+  text-indent              : 0em;
+}
+p.publication {
+  font-size                : 1.6rem;
+  margin-left              : 0em;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+  margin-right             : 6px;
+  text-align               : left;
+}
+p.ocn_is {
+  font-size                : 1.6rem;
+  display                  : inline-block;
+}
+p.matched_ocn {
+  font-size                : 1.5rem;
+  margin-left              : 2em;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+  margin-right             : 6px;
+  text-align               : left;
+}
+p[indent="h0i1"] {
+  padding-left             : 1em;
+  text-indent              : -1em;
+}
+p[indent="h0i2"] {
+  padding-left             : 2em;
+  text-indent              : -2em;
+}
+p[indent="h0i3"] {
+  padding-left             : 3em;
+  text-indent              : -3em;
+}
+p[indent="h0i4"] {
+  padding-left             : 4em;
+  text-indent              : -4em;
+}
+p[indent="h0i5"] {
+  padding-left             : 5em;
+  text-indent              : -5em;
+}
+p[indent="h0i6"] {
+  padding-left             : 6em;
+  text-indent              : -6em;
+}
+p[indent="h0i7"] {
+  padding-left             : 7em;
+  text-indent              : -7em;
+}
+p[indent="h0i8"] {
+  padding-left             : 8em;
+  text-indent              : -8em;
+}
+p[indent="h0i9"] {
+  padding-left             : 9em;
+  text-indent              : -9em;
+}
+p[indent="h1i0"] {
+  padding-left             : 0em;
+  text-indent              : 1em;
+}
+p[indent="h1i1"] {
+  padding-left             : 1em;
+  text-indent              : 0em;
+}
+p[indent="h1i2"] {
+  padding-left             : 2em;
+  text-indent              : -1em;
+}
+p[indent="h1i3"] {
+  padding-left             : 3em;
+  text-indent              : -2em;
+}
+p[indent="h1i4"] {
+  padding-left             : 4em;
+  text-indent              : -3em;
+}
+p[indent="h1i5"] {
+  padding-left             : 5em;
+  text-indent              : -4em;
+}
+p[indent="h1i6"] {
+  padding-left             : 6em;
+  text-indent              : -5em;
+}
+p[indent="h1i7"] {
+  padding-left             : 7em;
+  text-indent              : -6em;
+}
+p[indent="h1i8"] {
+  padding-left             : 8em;
+  text-indent              : -7em;
+}
+p[indent="h1i9"] {
+  padding-left             : 9em;
+  text-indent              : -8em;
+}
+p[indent="h2i0"] {
+  padding-left             : 0em;
+  text-indent              : 2em;
+}
+p[indent="h2i1"] {
+  padding-left             : 1em;
+  text-indent              : 1em;
+}
+p[indent="h2i2"] {
+  padding-left             : 2em;
+  text-indent              : 0em;
+}
+p[indent="h2i3"] {
+  padding-left             : 3em;
+  text-indent              : -1em;
+}
+p[indent="h2i4"] {
+  padding-left             : 4em;
+  text-indent              : -2em;
+}
+p[indent="h2i5"] {
+  padding-left             : 5em;
+  text-indent              : -3em;
+}
+p[indent="h2i6"] {
+  padding-left             : 6em;
+  text-indent              : -4em;
+}
+p[indent="h2i7"] {
+  padding-left             : 7em;
+  text-indent              : -5em;
+}
+p[indent="h2i8"] {
+  padding-left             : 8em;
+  text-indent              : -6em;
+}
+p[indent="h2i9"] {
+  padding-left             : 9em;
+  text-indent              : -7em;
+}
+p[indent="h3i0"] {
+  padding-left             : 0em;
+  text-indent              : 3em;
+}
+p[indent="h3i1"] {
+  padding-left             : 1em;
+  text-indent              : 2em;
+}
+p[indent="h3i2"] {
+  padding-left             : 2em;
+  text-indent              : 1em;
+}
+p[indent="h3i3"] {
+  padding-left             : 3em;
+  text-indent              : 0em;
+}
+p[indent="h3i4"] {
+  padding-left             : 4em;
+  text-indent              : -1em;
+}
+p[indent="h3i5"] {
+  padding-left             : 5em;
+  text-indent              : -2em;
+}
+p[indent="h3i6"] {
+  padding-left             : 6em;
+  text-indent              : -3em;
+}
+p[indent="h3i7"] {
+  padding-left             : 7em;
+  text-indent              : -4em;
+}
+p[indent="h3i8"] {
+  padding-left             : 8em;
+  text-indent              : -5em;
+}
+p[indent="h3i9"] {
+  padding-left             : 9em;
+  text-indent              : -6em;
+}
+p[indent="h4i0"] {
+  padding-left             : 0em;
+  text-indent              : 4em;
+}
+p[indent="h4i1"] {
+  padding-left             : 1em;
+  text-indent              : 3em;
+}
+p[indent="h4i2"] {
+  padding-left             : 2em;
+  text-indent              : 2em;
+}
+p[indent="h4i3"] {
+  padding-left             : 3em;
+  text-indent              : 1em;
+}
+p[indent="h4i4"] {
+  padding-left             : 4em;
+  text-indent              : 0em;
+}
+p[indent="h4i5"] {
+  padding-left             : 5em;
+  text-indent              : -1em;
+}
+p[indent="h4i6"] {
+  padding-left             : 6em;
+  text-indent              : -2em;
+}
+p[indent="h4i7"] {
+  padding-left             : 7em;
+  text-indent              : -3em;
+}
+p[indent="h4i8"] {
+  padding-left             : 8em;
+  text-indent              : -4em;
+}
+p[indent="h4i9"] {
+  padding-left             : 9em;
+  text-indent              : -5em;
+}
+p[indent="h5i0"] {
+  padding-left             : 0em;
+  text-indent              : 5em;
+}
+p[indent="h5i1"] {
+  padding-left             : 1em;
+  text-indent              : 4em;
+}
+p[indent="h5i2"] {
+  padding-left             : 2em;
+  text-indent              : 3em;
+}
+p[indent="h5i3"] {
+  padding-left             : 3em;
+  text-indent              : 2em;
+}
+p[indent="h5i4"] {
+  padding-left             : 4em;
+  text-indent              : 1em;
+}
+p[indent="h5i5"] {
+  padding-left             : 5em;
+  text-indent              : 0em;
+}
+p[indent="h5i6"] {
+  padding-left             : 6em;
+  text-indent              : -1em;
+}
+p[indent="h5i7"] {
+  padding-left             : 7em;
+  text-indent              : -2em;
+}
+p[indent="h5i8"] {
+  padding-left             : 8em;
+  text-indent              : -3em;
+}
+p[indent="h5i9"] {
+  padding-left             : 9em;
+  text-indent              : -4em;
+}
+p[indent="h6i0"] {
+  padding-left             : 0em;
+  text-indent              : 6em;
+}
+p[indent="h6i1"] {
+  padding-left             : 1em;
+  text-indent              : 5em;
+}
+p[indent="h6i2"] {
+  padding-left             : 2em;
+  text-indent              : 4em;
+}
+p[indent="h6i3"] {
+  padding-left             : 3em;
+  text-indent              : 3em;
+}
+p[indent="h6i4"] {
+  padding-left             : 4em;
+  text-indent              : 2em;
+}
+p[indent="h6i5"] {
+  padding-left             : 5em;
+  text-indent              : 1em;
+}
+p[indent="h6i6"] {
+  padding-left             : 6em;
+  text-indent              : 0em;
+}
+p[indent="h6i7"] {
+  padding-left             : 7em;
+  text-indent              : -1em;
+}
+p[indent="h6i8"] {
+  padding-left             : 8em;
+  text-indent              : -2em;
+}
+p[indent="h6i9"] {
+  padding-left             : 9em;
+  text-indent              : -3em;
+}
+p[indent="h7i0"] {
+  padding-left             : 0em;
+  text-indent              : 7em;
+}
+p[indent="h7i1"] {
+  padding-left             : 1em;
+  text-indent              : 6em;
+}
+p[indent="h7i2"] {
+  padding-left             : 2em;
+  text-indent              : 5em;
+}
+p[indent="h7i3"] {
+  padding-left             : 3em;
+  text-indent              : 4em;
+}
+p[indent="h7i4"] {
+  padding-left             : 4em;
+  text-indent              : 3em;
+}
+p[indent="h7i5"] {
+  padding-left             : 5em;
+  text-indent              : 2em;
+}
+p[indent="h7i6"] {
+  padding-left             : 6em;
+  text-indent              : 1em;
+}
+p[indent="h7i7"] {
+  padding-left             : 7em;
+  text-indent              : 0em;
+}
+p[indent="h7i8"] {
+  padding-left             : 8em;
+  text-indent              : -1em;
+}
+p[indent="h7i9"] {
+  padding-left             : 9em;
+  text-indent              : -2em;
+}
+p[indent="h8i0"] {
+  padding-left             : 0em;
+  text-indent              : 8em;
+}
+p[indent="h8i1"] {
+  padding-left             : 1em;
+  text-indent              : 7em;
+}
+p[indent="h8i2"] {
+  padding-left             : 2em;
+  text-indent              : 6em;
+}
+p[indent="h8i3"] {
+  padding-left             : 3em;
+  text-indent              : 5em;
+}
+p[indent="h8i4"] {
+  padding-left             : 4em;
+  text-indent              : 4em;
+}
+p[indent="h8i5"] {
+  padding-left             : 5em;
+  text-indent              : 3em;
+}
+p[indent="h8i6"] {
+  padding-left             : 6em;
+  text-indent              : 2em;
+}
+p[indent="h8i7"] {
+  padding-left             : 7em;
+  text-indent              : 1em;
+}
+p[indent="h8i8"] {
+  padding-left             : 8em;
+  text-indent              : 0em;
+}
+p[indent="h8i9"] {
+  padding-left             : 9em;
+  text-indent              : -1em;
+}
+p[indent="h9i0"] {
+  padding-left             : 0em;
+  text-indent              : 9em;
+}
+p[indent="h9i1"] {
+  padding-left             : 1em;
+  text-indent              : 8em;
+}
+p[indent="h9i2"] {
+  padding-left             : 2em;
+  text-indent              : 7em;
+}
+p[indent="h9i3"] {
+  padding-left             : 3em;
+  text-indent              : 6em;
+}
+p[indent="h9i4"] {
+  padding-left             : 4em;
+  text-indent              : 5em;
+}
+p[indent="h9i5"] {
+  padding-left             : 5em;
+  text-indent              : 4em;
+}
+p[indent="h9i6"] {
+  padding-left             : 6em;
+  text-indent              : 3em;
+}
+p[indent="h9i7"] {
+  padding-left             : 7em;
+  text-indent              : 2em;
+}
+p[indent="h9i8"] {
+  padding-left             : 8em;
+  text-indent              : 1em;
+}
+p[indent="h9i9"] {
+  padding-left             : 9em;
+  text-indent              : 0em;
+}
+p.spaced { white-space     : pre; }
+p.block {
+  white-space              : pre;
+}
+p.group { }
+p.alt { }
+p.verse {
+  white-space              : pre;
+  margin-bottom            : 6px;
+}
+p.caption {
+  text-align               : left;
+  font-size                : 80%%;
+  display                  : inline;
+}
+p.endnote {
+  font-size                : 1.5rem;
+  line-height              : 120%%;
+  text-align               : left;
+  margin-right             : 15mm;
+  padding-left             : 1em;
+  text-indent              : -1em;
+}
+p.center {
+  text-align               : center;
+}
+p.bold {
+  font-weight              : bold;
+}
+p.bold_left {
+  font-weight              : bold;
+  text-align               : left;
+}
+p.centerbold {
+  text-align               : center;
+  font-weight              : bold;
+}
+p.em {
+  font-weight              : bold;
+  font-style               : normal;
+  background               : #FFF3B6;
+}
+p.small {
+  font-size                : 1.4rem;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+  margin-right             : 6px;
+  text-align               : left;
+}
+.tiny, .tiny_left, .tiny_right, .tiny_center {
+  font-size                : 1.3rem;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+  color                    : #EEEEEE;
+  margin-right             : 6px;
+  text-align               : left;
+}
+p.tiny { }
+p.tiny_left {
+  margin-left              : 0px;
+  margin-right             : 0px;
+  text-align               : left;
+}
+p.tiny_right {
+  margin-right             : 1em;
+  text-align               : right;
+}
+p.tiny_center {
+  margin-left              : 0px;
+  margin-right             : 0px;
+  text-align               : center;
+}
+p.book_index_lev1 {
+  line-height              : 100%%;
+  margin-top               : 4px;
+  margin-bottom            : 1px;
+}
+p.book_index_lev2 {
+  line-height              : 100%%;
+  text-align               : left;
+  margin-left              : 3em;
+  margin-top               : 1px;
+  margin-bottom            : 3px;
+}
+tt {
+  font-family              : inconsolata, "liberation mono", "bitstream vera mono", "dejavu mono", monaco, consolas, "andale mono", "courier new", "courier 10 pitch", courier, monospace;
+  background-color         : #555555;
+  color                    : #DDDDDD;
+}
+pre {
+  width                    : auto;
+  display                  : block;
+  clear                    : both;
+  color                    : #555555;
+}
+pre.codeline {
+  display                  : table;
+  clear                    : both;
+  table-layout             : fixed;
+  margin-left              : 5%%;
+  margin-right             : 5%%;
+  width                    : 90%%;
+  white-space              : pre-wrap;
+  border-style             : none;
+  border-radius            : 5px 5px 5px 5px;
+  box-shadow               : 0 2px 5px #AAAAAA inset;
+  margin-bottom            : 1em;
+  padding                  : 0.5em 1em;
+  page-break-inside        : avoid;
+  word-wrap                : break-word;
+  font-family              : inconsolata, "liberation mono", "bitstream vera mono", "dejavu mono", monaco, consolas, "andale mono", "courier new", "courier 10 pitch", courier, monospace;
+  white-space              : pre;
+  white-space              : pre-wrap;
+  white-space              : -moz-pre-wrap;
+  white-space              : -o-pre-wrap;
+  background-color         : #555555;
+  color                    : #DDDDDD;
+  font-size                : 1.8rem;
+  line-height              : 120%%;
+}
+pre.codeline::before {
+  counter-reset            : linenum;
+}
+pre.codeline span.tr {
+  display                  : table-row;
+  counter-increment        : linenum;
+}
+pre.codeline span.th {
+  display                  : table-cell;
+  user-select              : none;
+  -moz-user-select         : none;
+  -webkit-user-select      : none;
+  padding                  : 0.5em 0.5em;
+}
+pre.codeline span.th::before {
+  content                  : counter(linenum) ".";
+  color                    : #999999;
+  text-align               : right;
+  display                  : block;
+}
+pre.codeline span.th {
+  width                    : 4em;
+}
+pre.codeline code {
+  display                  : table-cell;
+}
+p.code {
+  border-style             : none;
+}
+note { white-space         : pre; }
+em {
+  font-weight              : bold;
+  font-style               : italic;
+}
+p.left,th.left,td.left {
+  text-align               : left;
+}
+p.small_left,th.small_left,td.small_left {
+  text-align               : left;
+  font-size                : 1.4rem;
+}
+p.right,th.right,td.right {
+  text-align               : right;
+}
+ul, li {
+  list-style-type          : none;
+  list-style               : none;
+  padding-left             : 20px;
+  font-weight              : normal;
+  line-height              : 150%%;
+  text-align               : left;
+  text-indent              : 0mm;
+  margin-left              : 1em;
+  margin-right             : 2em;
+  margin-top               : 3px;
+  margin-bottom            : 3px;
+}
+li {
+  background               : (../image_sys/bullet_09.png) no-repeat 0px 6px;
+}
+ul { }
+h0, h1, h2, h3, h4, h5, h6, h7 {
+  font-weight              : bold;
+  line-height              : 120%%;
+  text-align               : left;
+  margin-top               : 20px;
+  margin-bottom            : 10px;
+}
+h4.norm, h5.norm, h6.norm, h7.norm {
+  margin-top               : 10px;
+  margin-bottom            : 0px;
+}
+h0 { font-size             : 2rem; }
+h1 { font-size             : 1.9rem; }
+h2 { font-size             : 1.8rem; }
+h3 { font-size             : 1.7rem; }
+h4 { font-size             : 1.6rem; }
+h5 { font-size             : 1.6rem; }
+h6 { font-size             : 1.6rem; }
+h7 { font-size             : 1.6rem; }
+h0, h1, h2, h3, h4, h5, h6, h7 {
+  text-shadow              : .2em .2em .3em #999999;
+}
+h1.i { margin-left         : 2em; }
+h2.i { margin-left         : 3em; }
+h3.i { margin-left         : 4em; }
+h4.i { margin-left         : 5em; }
+h5.i { margin-left         : 6em; }
+h6.i { margin-left         : 7em; }
+h7.i { margin-left         : 8em; }
+h8.i { margin-left         : 9em; }
+h9.i { margin-left         : 10em; }
+.toc {
+  font-weight              : normal;
+  margin-top               : 6px;
+  margin-bottom            : 6px;
+}
+h0.toc {
+  margin-left              : 1em;
+  font-size                : 2rem;
+  line-height              : 150%%;
+}
+h1.toc {
+  margin-left              : 1em;
+  font-size                : 1.9rem;
+  line-height              : 150%%;
+}
+h2.toc {
+  margin-left              : 2em;
+  font-size                : 1.8rem;
+  line-height              : 140%%;
+}
+h3.toc {
+  margin-left              : 3em;
+  font-size                : 1.7rem;
+  line-height              : 120%%;
+}
+h4.toc {
+  margin-left              : 4em;
+  font-size                : 1.6rem;
+  line-height              : 120%%;
+}
+h5.toc {
+  margin-left              : 5em;
+  font-size                : 1.5rem;
+  line-height              : 110%%;
+}
+h6.toc {
+  margin-left              : 6em;
+  font-size                : 1.4rem;
+  line-height              : 110%%;
+}
+h7.toc {
+  margin-left              : 7em;
+  font-size                : 1.3rem;
+  line-height              : 100%%;
+}
+.subtoc {
+  margin-right             : 34%%;
+  font-weight              : normal;
+}
+h5.subtoc {
+  margin-left              : 2em;
+  font-size                : 1.5rem;
+  margin-top               : 2px;
+  margin-bottom            : 2px;
+}
+h6.subtoc {
+  margin-left              : 3em;
+  font-size                : 1.4rem;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+}
+h7.subtoc {
+  margin-left              : 4em;
+  font-size                : 1.3rem;
+  margin-top               : 0px;
+  margin-bottom            : 0px;
+}
+hr {
+  display                  : block;
+  height                   : 1px;
+  width                    : 100%%;
+  border                   : 0;
+  border-top               : 1px solid #AAAAAA;
+  border-color             : #AAAAAA
+  background-color         : #AAAAAA
+  margin-left              : 0%%;
+  margin-right             : 0em;
+  margin-top               : 0.5em;
+  margin-bottom            : 0.5em;
+  padding                  : 0;
+}
+#+END_SRC
+
+*** settings for spine search SET
+
+#+NAME: url_doc_root
+#+BEGIN_SRC text
+/srv/www
+#+END_SRC
+
+#+NAME: doc_root_path
+#+BEGIN_SRC text
+_cfg.doc_root_www
+#+END_SRC
+#+BEGIN_SRC text
+/var/www/html
+#+END_SRC
+
+#+NAME: doc_subroot_path
+#+BEGIN_SRC text
+/spine
+#+END_SRC
+
+#+NAME: db_root_path
+#+BEGIN_SRC text
+_cfg.doc_root_db
+#+END_SRC
+#+BEGIN_SRC text
+/var/www/sqlite/
+#+END_SRC
+
+*** spine_search configuration.txt
+
+see configuration_cfte.org
+
+*** document header including copyright & license
+
+#+NAME: doc_header_including_copyright_and_license
+#+BEGIN_SRC txt
+/+
+- Name: Spine, Doc Reform
+  - Description: documents, structuring, processing, publishing, search
+    - static content generator
+
+  - Author: Ralph Amissah
+    [ralph.amissah@gmail.com]
+
+  - Copyright: (C) 2015 - 2022 Ralph Amissah, All Rights
+    Reserved.
+
+  - License: AGPL 3 or later:
+
+    Spine (SiSU), a framework for document structuring, publishing and
+    search
+
+    Copyright (C) Ralph Amissah
+
+    This program is free software: you can redistribute it and/or modify it
+    under the terms of the GNU AFERO General Public License as published by the
+    Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    This program is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+    more details.
+
+    You should have received a copy of the GNU General Public License along with
+    this program. If not, see [https://www.gnu.org/licenses/].
+
+    If you have Internet connection, the latest version of the AGPL should be
+    available at these locations:
+    [https://www.fsf.org/licensing/licenses/agpl.html]
+    [https://www.gnu.org/licenses/agpl.html]
+
+  - Spine (by Doc Reform, related to SiSU) uses standard:
+    - docReform markup syntax
+      - standard SiSU markup syntax with modified headers and minor modifications
+    - docReform object numbering
+      - standard SiSU object citation numbering & system
+
+  - Homepages:
+    [https://www.doc_reform.org]
+    [https://www.sisudoc.org]
+
+  - Git
+    [https://git.sisudoc.org/projects/?p=software/spine.git;a=summary]
+
++/
+#+END_SRC
diff --git a/org/config_d_cfte.org b/org/config_d_cfte.org
new file mode 100644
index 0000000..9bc1bd3
--- /dev/null
+++ b/org/config_d_cfte.org
@@ -0,0 +1,300 @@
+-*- mode: org -*-
+#+TITLE:       configuration d cfte
+#+DESCRIPTION: documents - structuring, various output representations & search
+#+FILETAGS:    :spine:hub:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+- [[./doc-reform.org][doc-reform.org]]  [[../org/][org/]]
+
+* cfte views version.txt configuration.txt (set version & configuration) SET
+
+** program version: version.txt
+
+*** set program version SET VERSION :version:set:project:
+
+- comma separated numbers: major, minor, patch
+
+#+NAME: spine_version_set
+#+BEGIN_SRC d
+0, 12, 0
+#+END_SRC
+
+*** set program version tangle :version:
+
+#+HEADER: :tangle "../views/version.txt"
+#+HEADER: :noweb yes
+#+BEGIN_SRC txt
+/+ obt - org-mode generated file +/
+struct Version {
+  int major;
+  int minor;
+  int patch;
+}
+enum _ver = Version(<<spine_version_set>>);
+<<spine_compiler_restrictions>>
+#+END_SRC
+
+*** compilation restrictions (supported compilers)
+- set compilation restrictions
+
+https://dlang.org/spec/version.html#predefined-versions
+
+#+NAME: spine_compiler_restrictions
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+version (Posix) {
+  version (DigitalMars) {
+  } else version (LDC) {
+  } else version (GNU) {
+  } else {
+    static assert (0, "Unsupported D compiler");
+  }
+} else {
+  static assert (0, "Unsupported D compiler");
+}
+#+END_SRC
+
+** set configuration SET :configuration:
+
+SEE NOTES on configuration hierarchy in spine.org
+
+*** spine: configuration.txt SET
+**** example
+
+#+HEADER: :tangle "../views/configuration_example.txt"
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+/+ obt - org-mode generated file +/
+struct Cfg {
+  string http_request_type     = "http";
+  string http_host             = "localhost";
+  string www_url_doc_subroot   = "/spine";
+  string cgi_filename          = "spine_search";
+  string cgi_search_form_title = "≅ SiSU Spine search";
+  string db_sqlite_path        = "/var/www/sqlite";
+  string db_sqlite_filename    = "spine.search.db";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+#+BEGIN_SRC d
+/+ obt - org-mode generated file +/
+struct Cfg {
+  string http_request_type        = "<<http_request_type>>";
+  string http_host                = "<<http_host>>";
+  string www_url_doc_root         = "<<www_url_doc_root>>";
+  string www_url_doc_subroot      = "<<www_url_doc_subroot>>";
+  string processing_path_doc_root = "<<processing_path_doc_root>>";
+  string cgi_bin_root             = "<<cgi_bin_root>>";
+  string cgi_bin_subpath          = "<<cgi_bin_subpath>>";
+  string cgi_filename             = "<<cgi_filename>>";
+  string cgi_url_root             = "<<http_request_type>>://<<http_host>><<cgi_bin_subpath>>";
+  string cgi_port                 = "";
+  string cgi_user                 = "";
+  string cgi_url_action           = "<<http_request_type>>://<<http_host>><<cgi_bin_subpath>>/<<cgi_filename>>";
+  string cgi_search_form_title    = "<<cgi_search_form_title>>";
+  string db_sqlite_path           = "<<db_sqlite_path>>";
+  string db_sqlite_filename       = "<<db_sqlite_filename>>";
+  string default_language         = "en";
+  string default_papersize        = "a4,letter.portrait";
+  string default_text_wrap        = "80";
+  string default_hash_digest      = "sha256";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+**** configure
+
+#+HEADER: :tangle ../views/configuration.txt_
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+<<config_localhost>>
+#+END_SRC
+
+**** configure remote host (sisudoc.org)
+
+#+NAME: config_remotehost
+#+HEADER: :tangle ../views/configuration.txt_remotehost_
+#+BEGIN_SRC d
+struct Cfg {
+  string http_request_type     = "https";
+  string http_host             = "sisudoc.org";
+  string www_url_doc_subroot   = "/spine";
+  string cgi_filename          = "spine_search";
+  string cgi_search_form_title = "≅ SiSU Spine search";
+  string db_sqlite_path        = "/var/www/sqlite";
+  string db_sqlite_filename    = "spine.search.db";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+#+BEGIN_SRC d
+struct Cfg {
+  string http_request_type        = "https";
+  string http_host                = "sisudoc.org";
+  string www_url_doc_root         = "https://sisudoc.org";
+  string www_url_doc_subroot      = "/spine";
+  string processing_path_doc_root = "/srv/www/spine";
+  string cgi_bin_root             = "/var/www/cgi/cgi-bin";
+  string cgi_bin_subpath          = "";
+  string cgi_filename             = "spine_search";
+  string cgi_url_root             = "https://sisudoc.org";
+  string cgi_port                 = "";
+  string cgi_user                 = "";
+  string cgi_url_action           = "https://sisudoc.org/spine_search";
+  string cgi_search_form_title    = "≅ SiSU Spine search";
+  string db_sqlite_path           = "/var/www/sqlite";
+  string db_sqlite_filename       = "spine.search.db";
+  string default_language         = "en";
+  string default_papersize        = "a4";
+  string default_text_wrap        = "80";
+  string default_hash_digest      = "sha256";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+**** configure localhost
+
+#+NAME: config_localhost
+#+HEADER: :tangle ../views/configuration.txt_localhost_
+#+BEGIN_SRC d
+struct Cfg {
+  string http_request_type     = "http";
+  string http_host             = "localhost";
+  string www_url_doc_subroot   = "/spine";
+  string cgi_filename          = "spine_search";
+  string cgi_search_form_title = "≅ SiSU Spine search";
+  string db_sqlite_path        = "/var/www/sqlite";
+  string db_sqlite_filename    = "spine.search.db";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+#+BEGIN_SRC d
+struct Cfg {
+  string http_request_type        = "http";
+  string http_host                = "localhost";
+  string www_url_doc_root         = "http://localhost";
+  string www_url_doc_subroot      = "/spine";
+  string processing_path_doc_root = "/srv/www/spine";
+  string cgi_bin_root             = "/var/www/cgi/cgi-bin";
+  string cgi_bin_subpath          = "/cgi-bin";
+  string cgi_filename             = "spine_search";
+  string cgi_url_root             = "http://localhost/cgi-bin";
+  string cgi_port                 = "";
+  string cgi_user                 = "";
+  string cgi_url_action           = "http://localhost/cgi-bin/spine_search";
+  string cgi_search_form_title    = "≅ SiSU Spine search";
+  string db_sqlite_path           = "/var/www/sqlite";
+  string db_sqlite_filename       = "spine.search.db";
+  string default_language         = "en";
+  string default_papersize        = "a4,letter.portrait";
+  string default_text_wrap        = "80";
+  string default_hash_digest      = "sha256";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+*** spine_search: configuration.txt SET
+
+#+HEADER: :tangle "../doc-reform-code-software-search-cgi/views/configuration_example.txt"
+#+HEADER: :noweb yes
+#+BEGIN_SRC d
+/+ obt - org-mode generated file +/
+struct Cfg {
+  string http_request_type     = "<<http_request_type>>";
+  string http_host             = "<<http_host>>";
+  string www_url_doc_subroot   = "<<www_doc_subroot>>";
+  string cgi_filename          = "<<cgi_filename>>";
+  string cgi_search_form_title = "<<cgi_search_form_title>>";
+  string db_sqlite_path        = "<<db_sqlite_path>>";
+  string db_sqlite_filename    = "<<db_sqlite_filename>>";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+#+BEGIN_SRC d
+struct Cfg {
+  string http_request_type     = "https";
+  string http_host             = "sisudoc.org";
+  string www_url_doc_subroot   = "/spine";
+  string cgi_filename          = "spine_search";
+  string cgi_search_form_title = "≅ SiSU Spine search";
+  string db_sqlite_path        = "/var/www/sqlite";
+  string db_sqlite_filename    = "spine.search.db";
+}
+enum _cfg = Cfg();
+#+END_SRC
+
+*** shared settings SET defaults
+
+#+NAME: http_request_type
+#+BEGIN_SRC sh
+http
+#+END_SRC
+
+#+NAME: http_host
+#+BEGIN_SRC sh
+localhost
+#+END_SRC
+
+#+NAME: www_url_doc_root
+#+BEGIN_SRC sh
+http://localhost
+#+END_SRC
+
+#+NAME: www_url_doc_subroot
+#+BEGIN_SRC sh
+/spine
+#+END_SRC
+
+#+NAME: processing_path_doc_root
+#+BEGIN_SRC sh
+/srv/www/spine
+#+END_SRC
+
+#+NAME: www_doc_subroot
+#+BEGIN_SRC sh
+/spine
+#+END_SRC
+
+#+NAME: cgi_bin_root
+#+BEGIN_SRC sh
+/var/www/cgi/cgi-bin
+#+END_SRC
+
+#+NAME: db_sqlite_path
+#+BEGIN_SRC sh
+/var/www/sqlite
+#+END_SRC
+
+#+NAME: cgi_filename
+#+BEGIN_SRC sh
+spine_search
+#+END_SRC
+
+#+NAME: cgi_bin_subpath
+#+BEGIN_SRC sh
+/cgi-bin
+#+END_SRC
+
+#+NAME: cgi_search_form_title
+#+BEGIN_SRC sh
+≅ SiSU Spine search
+#+END_SRC
+
+#+NAME: db_sqlite_filename
+#+BEGIN_SRC sh
+spine.search.db
+#+END_SRC
diff --git a/org/config_dub.org b/org/config_dub.org
new file mode 100644
index 0000000..65b0843
--- /dev/null
+++ b/org/config_dub.org
@@ -0,0 +1,286 @@
+-*- mode: org -*-
+#+TITLE:       configuration dub
+#+DESCRIPTION: documents - structuring, various output representations & search
+#+FILETAGS:    :spine:hub:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+- [[./doc-reform.org][doc-reform.org]]  [[./][org/]]
+
+** spine version SET VERSION :version:set:project:
+
+#+NAME: spine_version_set
+#+BEGIN_SRC sh
+0.12.0
+#+END_SRC
+
+*** dub.json :dub:config:json:
+**** dub.json
+***** file-system download external dependencies
+
+- d2sqlite3
+- dyaml
+  - tinyendian
+- imageformats
+
+#+HEADER:  :tangle "../dub.json"
+#+HEADER: :noweb yes
+#+BEGIN_SRC json
+{
+  "authors": [
+                             "Ralph Amissah"
+  ],
+  "copyright":                 "Copyright © 2015 - 2022 Ralph Amissah",
+  "name":                      "spine_search",
+  "version":                   "0.12.0",
+  "description":               "cgi search for spine, a sisu like document parser",
+  "homepage":                  "https://sisudoc.org",
+  "license":                   "AGPL-3.0+",
+  "targetPath":                "./cgi-bin",
+  "sourcePaths":               [ "./src" ],
+  "stringImportPaths":         [ "./views" ],
+  "buildRequirements":         [ "allowWarnings" ],
+  "targetType":                "executable",
+  "platforms":                 [ "posix" ],
+  "buildTypes": {
+    "dmd": {
+      "dflags":                [ "-J=views", "-I=src" ],
+      "buildOptions":          [ "inline", "verbose"  ],
+      "buildRequirements":     [ "allowWarnings" ]
+    },
+    "ldc2": {
+      "dflags":                [ "-O2", "-J=views", "-I=src" ],
+      "buildOptions":          [ "optimize", "inline", "verbose" ],
+      "buildRequirements":     [ "allowWarnings" ]
+    },
+    "ldmd2": {
+      "dflags":                [ "-O2", "-boundscheck=on", "-J=views", "-I=src", "-color=on" ],
+      "buildOptions":          [ "optimize", "inline", "verbose"  ],
+      "buildRequirements":     [ "allowWarnings" ]
+    },
+    "gdc": {
+      "dflags":                [ "-O2", "-J=views", "-I=src" ],
+      "buildOptions":          [ "optimize", "inline" ],
+      "buildRequirements":     [ "allowWarnings" ]
+    },
+    "gdmd": {
+      "dflags":                [ "-O2", "-J=views", "-I=src" ],
+      "buildOptions":          [ "optimize", "inline" ],
+      "buildRequirements":     [ "allowWarnings" ]
+    }
+  },
+  "dependencies": {
+    "spine_search:arsd.cgi":         "*",
+    "spine_search:d2sqlite3":    "*"
+  },
+  "subPackages": [
+    {
+      "name":           "d2sqlite3",
+      "description":    "A thin wrapper around SQLite 3",
+      "homepage":       "https://github.com/dlang-community/d2sqlite3",
+      "authors":        [ "Nicolas Sicard", "Other contributors: see Github repo" ],
+      "copyright":      "Copyright 2011-18 Nicolas Sicard",
+      "license":        "BSL-1.0",
+      "sourcePaths":    [ "./src/ext_depends/d2sqlite3/source" ],
+      "importPaths":    [ "./src/ext_depends/d2sqlite3/source" ],
+      "configurations": [
+        {
+          "name":                "d2sqlite3",
+          "d2sqlite3":           "with-lib",
+          "targetType":          "library",
+          "systemDependencies":  "SQLite version >= 3.8.7",
+          "libs":                [ "sqlite3" ],
+          "excludedSourceFiles": [ "source/tests.d" ]
+        }
+      ]
+    },
+    {
+      "name":           "arsd.cgi",
+      "description":    "cgi",
+      "homepage":       "https://code.dlang.org/packages/arsd-official",
+      "authors":        [ "Adam Ruppee" ],
+      "copyright":      "Copyright 2011-18 Adam Ruppee",
+      "license":        "BSL-1.0",
+      "sourcePaths":    [ "./src/ext_depends/arsd" ],
+      "importPaths":    [ "./src/ext_depends/arsd" ],
+      "configurations": [
+        {
+          "name":                "cgi",
+          "cgi":                 "with-lib",
+          "targetType":          "library",
+          "systemDependencies":  "Arsd version >= 0.8.7"
+        }
+      ]
+    }
+  ],
+  "configurations": [
+    {
+      "name":                  "default",
+      "targetName":            "spine_search"
+    },
+    {
+      "name":                  "ldc2",
+      "targetName":            "spine-search-ldc.cgi"
+    },
+    {
+      "name":                  "ldmd2",
+      "targetName":            "spine-search-ldc.cgi"
+    },
+    {
+      "name":                  "dmd",
+      "targetName":            "spine-search-dmd.cgi"
+    },
+    {
+      "name":                  "gdc",
+      "targetName":            "spine-search-gdc.cgi"
+    }
+  ]
+}
+#+END_SRC
+
+***** generic :generic:
+****** build (sdp) :release:
+
+#+BEGIN_SRC sh
+configuration "build" {
+  name                 "build"
+  targetType           "executable"
+  platforms            "posix"
+  targetName           "bin/spine"
+  dflags               "-J=views" "-I=src/doc_reform"
+  buildOptions         "verbose" "releaseMode" "optimize" "inline"
+  postGenerateCommands "notify-send -t 0 'D release executable ready' 'spine'"
+}
+#+END_SRC
+
+** dub :dub:
+
+https://github.com/dlang/dub/
+https://code.dlang.org/getting_started
+https://code.dlang.org/docs/commandline
+
+*** setup
+**** dub json or sdlang
+
+Every DUB package should contain a [[https://code.dlang.org/package-format?lang=json][dub.json]] or [[https://code.dlang.org/package-format?lang=sdl][dub.sdl]]
+https://code.dlang.org/package-format?lang=sdl
+https://code.dlang.org/packages/sdlang-d
+https://github.com/Abscissa/SDLang-D/blob/master/HOWTO.md
+
+https://code.dlang.org/docs/commandline
+
+**** dub dependencies
+
+dub list
+dub upgrade
+dub fetch taggedalgebraic
+dub fetch libinputvisitor
+dub fetch unit-threaded ?
+
+sdp ~master: /home/ralph/grotto/repo/git.repo/utils/spine-x/
+/home/ralph/.dub/packages/*
+
+*** build
+**** debug flags
+
+#+BEGIN_SRC sh
+biblio
+biblio_sorted
+bibliosorted
+block
+bookindex
+bookindexmatch
+bookindexraw
+check
+checkdoc
+code
+comment
+dumpdoc                    write out document contents, with object type and ocn
+endnotes
+endnotes_build
+footnotes
+footnotesdone
+group
+header
+header_and_content
+header1
+headerjson
+headermakejson
+headermetadatajson
+heading
+headings
+headingsfound
+insert
+io
+munge
+node
+objectrelated1
+objectrelated2
+objects
+ocnoff
+para
+parabullet
+parabulletindent
+paraindent
+paraindenthang
+parent
+poem
+quote
+raw
+source
+srclines
+structattrib
+summary
+table
+toc
+#+END_SRC
+
+** dub REFERENCE
+*** SET version
+
+#+NAME: dub_version_set
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<dub_version_next>>
+#+END_SRC
+
+#+NAME: nix_sha_dub
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<nix_sha_dub_next>>
+#+END_SRC
+
+*** SELECT version
+**** dub 1.24.0
+
+#+NAME: dub_version_next
+#+BEGIN_SRC nix
+1.24.0
+#+END_SRC
+
+#+NAME: nix_sha_dub_next
+#+BEGIN_SRC nix
+0wirm6msz8kw2a7v2ax9ab6i48cmfv6qjwpfrl9vrr4k4xdg3vn6
+#+END_SRC
+
+**** dub 1.23.0
+
+#+NAME: dub_version_current
+#+BEGIN_SRC nix
+1.23.0
+#+END_SRC
+
+#+NAME: nix_sha_dub_current
+#+BEGIN_SRC nix
+06a4whsl1m600k096nwif83n7za3vr7pj1xwapncy5fcad1gmady
+#+END_SRC
diff --git a/org/config_git.org b/org/config_git.org
new file mode 100644
index 0000000..069341e
--- /dev/null
+++ b/org/config_git.org
@@ -0,0 +1,91 @@
+-*- mode: org -*-
+#+TITLE:       configuration git
+#+DESCRIPTION: documents - structuring, various output representations & search
+#+FILETAGS:    :spine:hub:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+* spine
+** .gitignore :gitignore:
+
+#+HEADER: :tangle "../.gitignore"
+#+BEGIN_SRC sh
+# git ls-files --others --exclude-from=.git/info/exclude
+# git check-ignore -v flake.lock
+# git clean -ix
+# find . -name "*_" | xargs rm -rf
+# find . -name "*.o" | xargs rm -rf
+*
+!.gitignore
+!.gitattributes
+!nix/**
+!*.nix
+!flake.lock
+!.envrc
+!README.md
+!README
+!COPYRIGHT
+!CHANGELOG
+!makefile
+!version.txt
+!configuration.txt
+!*.json
+!*.sdl
+!meson.build
+!tangle
+!*.org
+!org
+!org/*.org
+!*.d
+!*.rb
+!*.txt
+!src
+!src/**
+!*.sst
+!*.ssm
+!**/*.sst
+!**/*.ssm
+!config_local_site
+!views
+.dub/**
+**/.dub/**
+**/cgi-bin/**
+tmp/**
+*_.org
+*_.nix
+*_.d
+*_.txt
+*_
+*.swp
+*~
+\#*
+*.\#*
+!.envrc-local_
+!src/spine_search.d_
+#!*/
+#\#*
+#*.\#*
+#.reggae/**
+#+END_SRC
+
+** .gitattributes :gitattributes:
+
+#+HEADER: :tangle "../.gitattributes"
+#+BEGIN_SRC sh
+/org export-ignore
+.gitattributes export-ignore
+#.gitignore export-ignore
+tangle export-ignore
+#flake.lock export-ignore
+/build export-ignore
+#+END_SRC
diff --git a/org/config_make.org b/org/config_make.org
new file mode 100644
index 0000000..f2ea5af
--- /dev/null
+++ b/org/config_make.org
@@ -0,0 +1,748 @@
+-*- mode: org -*-
+#+TITLE:       spine (doc_reform) (project) makefile
+#+DESCRIPTION: makefile for spine
+#+FILETAGS:    :spine:build:tools:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+
+- [[./doc-reform.org][doc-reform.org]]  [[../org/][org/]]
+
+* project
+** version info SET VERSION :version:set:project:
+*** project SET VERSION
+
+#+NAME: spine_version_set
+#+BEGIN_SRC sh
+0.12.0
+#+END_SRC
+
+*** build tools if specified
+
+- meson
+
+#+NAME: meson_version_set
+#+BEGIN_SRC sh
+0.46
+#+END_SRC
+
+- soversion
+
+#+NAME: soversion_version_set
+#+BEGIN_SRC sh
+0
+#+END_SRC
+
+* spine
+** spine makefile :makefile:
+*** tangle
+
+#+HEADER: :noweb yes
+#+BEGIN_SRC makefile
+SpineBIN          := "${SpineBIN}" # 'result/bin'
+SpineOUT          := "${SpineOUT}" # '/srv/www/spine'
+SpinePOD          := "${SpinePOD}" # '~/grotto/repo/git.repo/projects/project-spine/doc-reform-markup/spine-markup-samples/markup/pod'
+SpineSearchAction := 'https://sisudoc.org/spine_search'
+SpineCGIform      := 'spine_search'
+SpineSQLdb        := 'spine.search.db'
+
+# nix build
+build:
+	nix-build
+
+# cp cgi search form
+cp-cgi:
+	sudo cp -vi /var/www/cgi/cgi-bin/spine_search /var/www/cgi/cgi-bin/spine_search_old && \
+	sudo cp -vi result/share/cgi-bin/spine_search /var/www/cgi/cgi-bin/spine_search
+
+get_depends:
+	hwd=$$(echo `pwd`) && \
+	gwd="$${hwd}/src/ext_depends" && \
+	dirs=$$(echo `ls -gx $${gwd}`) && \
+	license_bsl="Boost Software License 1.0 (BSL-1.0)" && \
+	echo $${hwd} && \
+	echo $${gwd} && \
+	echo $${deps} && \
+	dub upgrade; \
+	cd $${gwd} && \
+	for dir in $${deps}; do \
+	  if [ -d $${dir} ]; then \
+	    echo $${dir} && \
+	    if [[ "arsd" == $${dir} ]]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+          mkdir $${dir} && \
+          aria2c -o "$${dir}/cgi.d" "https://raw.githubusercontent.com/adamdruppe/arsd/master/cgi.d" && \
+	      cd $${gwd}; \
+	    elif [[ "d2sqlite3" == $${dir} ]]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+	      git clone --depth=1 https://github.com/dlang-community/$${dir} && \
+	      cd $${dir} && \
+	      echo "$${dir} `git rev-parse HEAD | cut -c 1-8`"   > ../$${dir}.meta && \
+	      echo "https://github.com/dlang-community/$${dir}" >> ../$${dir}.meta && \
+	      echo "$${license_bsl}"                            >> ../$${dir}.meta && \
+	      cd $${gwd} && \
+	      rm -rf $${dir}/.git; \
+	    fi; \
+	  fi; \
+	done; \
+	cd $${hwd}
+
+set_depends: get_depends
+	dub describe | sed 's~$(shell echo `pwd | sed 's_/_\\/_g'`)~.~g'  > dub_describe.json
+#+END_SRC
+
+<<make_git_snapshot>>
+<<make_phony>>
+
+*** settings [+2] :settings:
+
+*** make archive
+
+#+NAME: make_project_zip_archive
+#+BEGIN_SRC makefile
+gitZip:
+	git archive -v --format=tar --prefix=`echo spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)`/ HEAD | gzip > ./tarballGitHEAD/spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT).tar.gz && \
+	echo "to unzip: tar -xzf spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT).tar.gz"
+
+# git archive project, produce current state .tar.gz
+gitArchive:
+	git archive -v --format=tar --prefix=spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)/ HEAD | gzip > ./tarballGitHEAD/spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT).tar.gz && \
+	echo "to unzip: tar -xzf spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT).tar.gz"
+
+# git archive project, produce current state .tar.gz
+# gitArchive:
+# 	git archive -v --format=tar --prefix="spine-{{PROG_VER_DECLARED}}-tag-{{PROG_VER_GIT}}/" HEAD | gzip > ./tarballGitHEAD/spine-{{PROG_VER_DECLARED}}-tag-{{PROG_VER_GIT}}.tar.gz && \
+# 	echo "to unzip: tar -xzf spine-{{PROG_VER_DECLARED}}-tag-{{PROG_VER_GIT}}.tar.gz"
+
+#+END_SRC
+
+*** nixGitHEADtarball
+
+#+NAME: nixGitHEADtarball
+#+HEADER: :noweb yes
+#+BEGIN_SRC makefile
+# remove test tarball dir
+nixGitHEADtarballClean:
+	if [ -d "./tarballGitHEAD" ]; then \
+	  rm -rv ./tarballGitHEAD; \
+	fi;
+
+# create test tarball
+nixGitHEADtarballTar:
+	if [ ! -d "./tarballGitHEAD" ]; then \
+	  mkdir ./tarballGitHEAD; \
+	fi; \
+	git archive -v --format=tar --prefix="spine-${PROG_VER_DECLARED}/" HEAD | \
+	gzip > ./tarballGitHEAD/spine-${PROG_VER_DECLARED}-tag-${PROG_VER_GIT}.tar.gz && \
+	cp -v ./tarballGitHEAD/spine-${PROG_VER_DECLARED}-tag-${PROG_VER_GIT}.tar.gz ./tarballGitHEAD/spine-${PROG_VER_DECLARED}.tar.gz && \
+	echo "to unzip: tar -xzf spine-${PROG_VER_DECLARED}-tag-${PROG_VER_GIT}.tar.gz"; \
+	echo "to unzip: tar -xzf spine-${PROG_VER_DECLARED}.tar.gz"
+
+# check test tarball
+nixGitHEADtarballCheck:
+	nix flake check <<nixGitUrl>>/spine-${PROG_VER_DECLARED}.tar.gz; \
+	nix flake lock <<nixGitUrl>>/spine-${PROG_VER_DECLARED}.tar.gz; \
+	nix flake show <<nixGitUrl>>/spine-${PROG_VER_DECLARED}.tar.gz;
+
+# build test tarball
+nixGitHEADtarballBuild:
+	echo "nix build <<nixGitUrl>>/spine-${PROG_VER_DECLARED}.tar.gz#spine --print-build-logs"
+	nix build <<nixGitUrl>>/spine-${PROG_VER_DECLARED}.tar.gz#spine --print-build-logs
+	#nix build "./tarballGitHEAD/spine-${PROG_VER_DECLARED}.tar.gz#spine" --print-build-logs
+
+# clean create check & build test tarball
+nixGitHEADtarball: nixGitHEADtarballClean nixGitHEADtarballTar nixGitHEADtarballCheck nixGitHEADtarballBuild
+
+#+END_SRC
+
+**** Url nixGitHEADtarball
+
+#+NAME: nixGitUrl
+#+BEGIN_SRC makefile
+file://${hwd}/tarballGitHEAD
+#+END_SRC
+
+*** _make_ commands [+2] :make:commands:
+
+- build commands
+  - build
+  - debug
+  - release
+- init, clean, distclean etc.
+  - init
+  - clean
+  - expunge
+  - distclean
+  - distclean_and_init
+- org babel tangle
+  - tangle
+- git snapshot
+  - gitsnapshot
+
+**** version tag, stamp
+
+#+NAME: make_version_tag
+#+HEADER: :noweb yes
+#+BEGIN_SRC makefile
+version_tag:
+	echo "DRV=<<spine_version_set>>; git tag -f doc-reform_v$$\{DRV} -m\"doc-reform $$\{DRV}\" HEAD" && \
+	echo "git tag -f doc-reform_v<<spine_version_set>> -m\"doc-reform spine-<<spine_version_set>>\" HEAD"
+
+#+END_SRC
+
+**** changelog
+
+#+NAME: make_changelog
+#+BEGIN_SRC makefile
+changelog_:
+	git log --pretty=format:'---%+s %+as %ae%+h%d%+b' --no-merges | sed "/^\\s*$$/d" | sed "s/^---$$//" | sed "s/^\(\*\)\+/-/" | sed "s/ \+$$//" > CHANGELOG_
+
+# git changelog for project
+changelog:
+	git log --pretty=format:'---%+s %+as %ae%+h%d%+b' --no-merges | sed "/^\\s*$$/d" | sed "s/^---$$//" | sed "s/^\(\*\)\+/-/" | sed "s/ \+$$//" | sed "s/ \+$//" > CHANGELOG_
+
+#+END_SRC
+
+**** build commands [+1] :build:compile:
+***** _dub_ build rebuild :dub:
+****** all compiler builds :all:dmd:gdc:ldc:
+******* all builds
+******** default
+
+#+NAME: make_dub_upgrade
+#+BEGIN_SRC makefile
+dub_upgrade:
+	$(DUB) upgrade
+
+#+END_SRC
+
+#+NAME: make_compile_compiler_default
+#+BEGIN_SRC makefile
+default: ldc
+
+#+END_SRC
+
+******** quick :quick:
+********* default :default:
+
+#+NAME: make_compile_compiler_all
+#+BEGIN_SRC makefile
+all: dmd ldc gdc
+
+all_ver: dmd_ver ldc_ver gdc_ver
+
+all_debug: dmd_debug gdc_debug ldc_debug
+
+#+END_SRC
+******** clean & tangle :clean:tangle:
+********* default :default:
+
+#+NAME: make_clean_tangle_compile_all_clean
+#+BEGIN_SRC makefile
+all_clean: clean tangle dmd ldc gdc
+
+all_ver_clean: clean tangle dmd_ver ldc_ver gdc_ver
+
+all_debug_ver: dmd_debug_ver gdc_debug_ver ldc_debug_ver
+
+all_debug_clean_ver: clean tangle dmd_debug_ver gdc_debug_ver ldc_debug_ver
+
+#+END_SRC
+
+****** individual compiler builds :each:
+******* dmd :dmd:
+******** quick builds :quick:
+
+#+NAME: make_dub_compile_dmd_default
+#+BEGIN_SRC makefile
+dmd: dub_upgrade
+	$(DUB) --compiler=dmd --config=dmd --build=release-nobounds
+	notify-send -t 0 'D dmd compiled test release executable ready' 'spine-dmd'
+
+dmd_debug:
+	$(DUB) --compiler=dmd --config=dmd --build=debug
+
+# assumes git tags with program version
+dmd_ver: dub_upgrade
+	$(DUB) --compiler=dmd --config=dmd-version
+	mv bin/spine-dmd-ver bin-archive/spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-dmd
+	notify-send -t 0 'D dmd compiled test release executable ready' 'spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-dmd'
+
+#+END_SRC
+
+******** clean & tangle :clean:tangle:
+
+#+NAME: make_dub_compile_dmd_release
+#+BEGIN_SRC makefile
+dmd_clean_ver: clean tangle dmd_ver
+
+dmd_rel: expunge skel tangle
+	$(DUB) --compiler=dmd --config=spine-release
+
+dmd_rel_tangle: tangle
+	$(DUB) --compiler=dmd --config=spine-dmd
+
+dmd_rel_expunge_tangle: expunge skel tangle dmd_rel_tangle
+
+dmd_debug_tangle: tangle
+	$(DUB) --compiler=dmd --config=spine-dmd-debug
+
+#+END_SRC
+
+******* gdc :gdc:
+******** quick builds :quick:
+
+#+NAME: make_dub_compile_gdc_default
+#+BEGIN_SRC makefile
+gdc: dub_upgrade
+	$(DUB) --compiler=gdc --config=gdc
+	notify-send -t 0 'D gdc compiled test release executable ready' 'spine-gdc'
+
+gdc_debug:
+	$(DUB) --compiler=gdc --config=gdc --build=debug
+
+# assumes git tags with program version
+gdc_ver: dub_upgrade
+	$(DUB) --compiler=gdc --config=gdc-version
+	mv bin/spine-gdc-ver bin-archive/spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-gdc
+	notify-send -t 0 'D gdc compiled test release executable ready' 'spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-gdc'
+
+#+END_SRC
+
+******** clean & tangle :clean:tangle:
+
+#+NAME: make_dub_compile_gdc_release
+#+BEGIN_SRC makefile
+gdc_clean_ver: clean tangle gdc_ver
+
+gdc_rel: expunge skel tangle
+	$(DUB) --compiler=gdc --config=spine-release
+
+gdc_rel_tangle: tangle
+	$(DUB) --compiler=gdc --config=spine-gdc
+
+gdc_rel_expunge_tangle: expunge skel tangle gdc_rel_tangle
+
+gdc_debug_tangle: tangle
+	$(DUB) --compiler=gdc --config=spine-gdc-debug
+
+#+END_SRC
+
+******* ldc :ldc:
+******** quick builds :quick:
+
+#+NAME: make_dub_compile_ldc_default
+#+BEGIN_SRC makefile
+ldc: dub_upgrade
+	$(DUB) --compiler=ldc2 --config=ldc --build=release
+	notify-send -t 0 'D ldc compiled test release executable ready' 'spine-ldc'
+
+ldc_debug:
+	$(DUB) --compiler=ldc2 --config=ldc --build=debug
+
+# assumes git tags with program version
+ldc_ver: dub_upgrade
+	$(DUB) --compiler=ldc2 --config=ldc-version
+	mv bin/spine-ldc-ver bin-archive/spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-ldc
+	notify-send -t 0 'D ldc2 compiled test release executable ready' 'spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)-ldc'
+
+ldc_clean_ver: clean tangle ldc_ver
+
+#+END_SRC
+
+******** clean & tangle :clean:tangle:
+
+#+NAME: make_dub_compile_ldc_release
+#+BEGIN_SRC makefile
+ldc_rel: expunge skel tangle
+	$(DUB) --compiler=ldc2 --config=spine-release
+
+ldc_rel_tangle: tangle
+	$(DUB) --compiler=ldc2 --config=spine-ldc
+
+ldc_rel_expunge_tangle: expunge skel tangle ldc_rel_tangle
+
+ldc_debug_tangle: tangle
+	$(DUB) --compiler=ldc2 --config=spine-ldc-debug
+
+#+END_SRC
+
+****** generic
+******* init clean distclean etc. :clean:
+
+#+NAME: make_initialization_operations_parts
+#+BEGIN_SRC makefile
+reinit: clean skel tangle
+
+skel:
+	mkdir -p $(PRG_BINDIR); \
+	mkdir -p $(PRG_BINDIR)-archive; \
+	mkdir -p build; \
+	mkdir -p views; \
+	mkdir -p data; \
+	mkdir -p sundry/misc/util/d/cgi/search/cgi-bin/src; \
+	mkdir -p sundry/misc/util/d/tools/markup_conversion; \
+	mkdir -p sundry/misc/editor-syntax-etc/emacs; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/syntax; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/colors; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/ftplugin; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/rc; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/templates; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR)/conf; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR)/io_in; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR)/io_out; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR)/meta; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR)/share; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR); \
+	mkdir -p $(PRG_BINDIR);
+
+init: skel
+
+clean:
+	rm -rf build; \
+	rm -rf $(PRG_SRCDIR); \
+	rm -rf $(PRG_DOCDIR);
+
+clean_bin:
+	rm $(PRG_BINDIR)/*
+
+clean_src:
+	rm -rf $(PRG_SRCDIR);
+
+clean_docs:
+	rm -rf $(PRG_DOCDIR)
+
+expunge:
+	rm -f dub.selections.json; \
+	rm -rf build; \
+	rm -rf $(PRG_SRCDIR); \
+	rm -rf $(PRG_BINDIR); \
+	rm -rf $(PRG_DOCDIR);
+
+distclean: expunge
+
+distclean_and_init: expunge
+	mkdir -p views; \
+	mkdir -p sundry/misc/util/d/cgi/search/cgi-bin/src; \
+	mkdir -p sundry/misc/util/d/tools/markup_conversion; \
+	mkdir -p sundry/misc/editor-syntax-etc/emacs; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/syntax; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/colors; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/ftplugin; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/rc; \
+	mkdir -p sundry/misc/editor-syntax-etc/vim/templates; \
+	mkdir -p $(PRG_SRCDIR)/$(PRG_NAME_DIR); \
+	mkdir -p $(PRG_BINDIR);
+
+#+END_SRC
+
+******* version :version:
+
+#+NAME: make_initialization_operations_git_version
+#+BEGIN_SRC makefile
+ver:
+	echo spine-$(PROG_VER_DECLARED)-tag-$(PROG_VER_GIT)
+
+#+END_SRC
+
+******* tangle build rebuild :clean:tangle:build:
+
+#+NAME: make_initialization_operations_assemble
+#+BEGIN_SRC makefile
+clean_tangle_build: clean tangle build
+
+tangle_build: tangle build
+
+build: $(PRG_SRCDIR)/$(PRG_SRC)
+	$(DC) $(DC_FLAGS) \
+	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
+	$(PRG_SRCDIR)/$(PRG_SRC)
+
+rebuild: $(PRG_SRCDIR)/$(PRG_SRC) $(PRG_BINDIR)/$(PRG_BIN).o clean build
+
+makefile_new:
+	make -k tangle_maker
+
+restart: clean tangle
+
+#+END_SRC
+
+**** get project dependencies
+
+#+NAME: make_get_project_dependencies_github
+#+BEGIN_SRC makefile
+get_depends:
+	hwd=$$(echo `pwd`) && \
+	gwd="$${hwd}/src/ext_depends" && \
+	dirs=$$(echo `ls -gx $${gwd}`) && \
+	license_bsl="Boost Software License 1.0 (BSL-1.0)" && \
+	echo $${hwd} && \
+	echo $${gwd} && \
+	echo $${deps} && \
+	dub upgrade; \
+	cd $${gwd} && \
+	for dir in $${deps}; do \
+	  if [ -d $${dir} ]; then \
+	    echo $${dir} && \
+	    if [ "imageformats" == $${dir} ]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+	      git clone --depth=1 https://github.com/tjhann/$${dir} && \
+	      cd $${dir} && \
+	      echo $$PWD && \
+	      echo "$${dir} `git rev-parse HEAD | cut -c 1-8`"   > ../$${dir}.meta && \
+	      echo "https://github.com/tjhann/$${dir}"          >> ../$${dir}.meta && \
+	      echo "$${license_bsl}"                            >> ../$${dir}.meta && \
+	      cd $${gwd} && \
+	      rm -rf $${dir}/.git; \
+	    elif [[ "d2sqlite3" == $${dir} ]]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+	      git clone --depth=1 https://github.com/dlang-community/$${dir} && \
+	      cd $${dir} && \
+	      echo "$${dir} `git rev-parse HEAD | cut -c 1-8`"   > ../$${dir}.meta && \
+	      echo "https://github.com/dlang-community/$${dir}" >> ../$${dir}.meta && \
+	      echo "$${license_bsl}"                            >> ../$${dir}.meta && \
+	      cd $${gwd} && \
+	      rm -rf $${dir}/.git; \
+	    fi; \
+	  fi; \
+	done; \
+	cd $${hwd}
+
+set_depends: get_depends
+	dub describe | sed 's~$(shell echo `pwd | sed 's_/_\\/_g'`)~.~g'  > dub_describe.json
+
+rm_flakelock:
+	git reset HEAD flake.lock && \
+	touch flake.lock \
+	git rm -f flake.lock
+
+flake_update:
+	git add .; \
+	nix flake lock && \
+	git reset HEAD flake.lock; \
+	cp flake.lock flake.lock_
+
+flake_update_move_lock: flake_update
+	touch flake.lock \
+	git rm -f flake.lock
+
+set_latest: set_depends flake_update rm_flakelock
+
+#+END_SRC
+
+gitDir=dub2nix; git clone --depth=1 https://github.com/lionello/${gitDir} | rm -rf ${gitDir}/.git
+
+**** _meson_ build :meson:
+
+meson using dub
+- works & looks pretty clean
+- but subprojects built externally & not suitable for debian packaging
+
+#+NAME: make_meson_build
+#+BEGIN_SRC makefile
+meson_clean_build_dir:
+	rm -r build; mkdir build
+
+meson_build: meson_clean_build_dir
+	meson --buildtype=debugoptimized build
+	ninja -C build
+	notify-send -t 0 'D meson build ldc compiled test release executable ready' 'spine'
+
+meson_redo: meson_clean_build_dir meson_build
+
+meson_project_build_clean: clean skel tangle dub_upgrade meson_build
+
+meson: meson_clean_build_dir dub_upgrade meson_build
+
+#+END_SRC
+
+**** testrun (program against document markup) :markup:sample:
+***** pods :pod:
+******* find files
+
+#+NAME: make_project_testrun_0_find_pods
+#+BEGIN_SRC makefile
+find_pods:
+	$(SiSU_MARKUP_SAMPLES_FIND_PODS)
+
+#+END_SRC
+
+**** org babel tangle batch process command :tangle:
+***** tangle: org babel tangle *.org
+
+#+NAME: make_tangle_0
+#+BEGIN_SRC makefile
+tangle: skel
+	for f in $(ORGFILELIST); do \
+		ORGFILES="$$ORGFILES \"$$f\""; \
+	done; \
+	emacs --batch -Q -q \
+	--eval "(progn \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP)\")) \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP_ORG)\" t)) \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP_ORG_CONTRIB)\" t)) \
+		(require 'org)(require 'ob)(require 'ob-tangle) \
+		(mapc (lambda (file) \
+			(find-file (expand-file-name file \"$(ORGDIR)\")) \
+				(setq-local org-src-preserve-indentation t) \
+			(org-babel-tangle) \
+			(kill-buffer)) '($$ORGFILES)))" 2>&1
+
+#+END_SRC
+
+***** tangle maker: org babel tangle makefile new
+
+#+NAME: make_tangle_1
+#+BEGIN_SRC makefile
+tangle_maker:
+	for f in $(ORGFILELIST); do \
+		ORGFILES="\"org/dr_build_scaffold.org\""; \
+	done; \
+	emacs --batch -Q -q \
+	--eval "(progn \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP)\")) \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP_ORG)\" t)) \
+		(add-to-list 'load-path \
+			(expand-file-name \"$(EMACSLISP_ORG_CONTRIB)\" t)) \
+		(require 'org)(require 'ob)(require 'ob-tangle) \
+		(mapc (lambda (file) \
+			(find-file (expand-file-name file \".\")) \
+				(setq-local org-src-preserve-indentation t) \
+			(org-babel-tangle) \
+			(kill-buffer)) '($$ORGFILES)))" 2>&1
+
+#+END_SRC
+
+**** git snapshot
+
+#+NAME: make_git_snapshot
+#+BEGIN_SRC makefile
+gitsnapshot: distclean tangle
+	git commit -a
+
+#+END_SRC
+
+*** phony :phony:
+
+#+NAME: make_phony
+#+BEGIN_SRC makefile
+.PHONY : all build rebuild debug release \
+	distclean init \
+	tangle gitsnapshot
+
+#+END_SRC
+
+* dr spine_search
+** spine_search makefile :makefile
+*** tangle
+
+#+HEADER: :tangle ../makefile
+#+HEADER: :noweb yes
+#+BEGIN_SRC makefile
+<<make_cgi_search_makefile>>
+<<make_get_project_cgi_search_dependencies_github>>
+#+END_SRC
+
+*** make
+
+#+NAME: make_cgi_search_makefile
+#+BEGIN_SRC makefile
+SpineBIN          := "${SpineBIN}" # 'result/bin'
+SpineOUT          := "${SpineOUT}" # '/srv/www/spine'
+SpinePOD          := "${SpinePOD}" # '~/grotto/repo/git.repo/projects/project-spine/doc-reform-markup/spine-markup-samples/markup/pod'
+SpineSearchAction := 'https://sisudoc.org/spine_search'
+SpineCGIform      := 'spine_search'
+SpineSQLdb        := 'spine.search.db'
+
+# nix build
+build:
+	nix-build
+
+# cp cgi search form
+cp-cgi:
+	sudo cp -vi /var/www/cgi/cgi-bin/spine_search /var/www/cgi/cgi-bin/spine_search_old && \
+	sudo cp -vi result/share/cgi-bin/spine_search /var/www/cgi/cgi-bin/spine_search
+
+#+END_SRC
+
+*** get project dependencies
+
+#+NAME: make_get_project_cgi_search_dependencies_github
+#+BEGIN_SRC makefile
+get_depends:
+	hwd=$$(echo `pwd`) && \
+	gwd="$${hwd}/src/ext_depends" && \
+	dirs=$$(echo `ls -gx $${gwd}`) && \
+	license_bsl="Boost Software License 1.0 (BSL-1.0)" && \
+	echo $${hwd} && \
+	echo $${gwd} && \
+	echo $${deps} && \
+	dub upgrade; \
+	cd $${gwd} && \
+	for dir in $${deps}; do \
+	  if [ -d $${dir} ]; then \
+	    echo $${dir} && \
+	    if [[ "arsd" == $${dir} ]]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+          mkdir $${dir} && \
+          aria2c -o "$${dir}/cgi.d" "https://raw.githubusercontent.com/adamdruppe/arsd/master/cgi.d" && \
+	      cd $${gwd}; \
+	    elif [[ "d2sqlite3" == $${dir} ]]; then \
+	      echo $${dir} && \
+	      rm -rf $${dir} && \
+	      git clone --depth=1 https://github.com/dlang-community/$${dir} && \
+	      cd $${dir} && \
+	      echo "$${dir} `git rev-parse HEAD | cut -c 1-8`"   > ../$${dir}.meta && \
+	      echo "https://github.com/dlang-community/$${dir}" >> ../$${dir}.meta && \
+	      echo "$${license_bsl}"                            >> ../$${dir}.meta && \
+	      cd $${gwd} && \
+	      rm -rf $${dir}/.git; \
+	    fi; \
+	  fi; \
+	done; \
+	cd $${hwd}
+
+set_depends: get_depends
+	dub describe | sed 's~$(shell echo `pwd | sed 's_/_\\/_g'`)~.~g'  > dub_describe.json
+
+#+END_SRC
+
+** .env/local
+
+#+HEADER: :NO-tangle ../sundry/spine_search_cgi/.env/local
+#+BEGIN_SRC nix
+export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos
+#+END_SRC
+
+* www dr spine latex
+
+- /srv/www/spine/latex
+
+** make
+
+** notes
+
+- vim {the_wealth_of_networks.yochai_benkler,two_bits.christopher_kelty,viral_spiral.david_bollier}.en.a4.portrait.tex
+- emacs {the_wealth_of_networks.yochai_benkler,two_bits.christopher_kelty,viral_spiral.david_bollier}.en.a4.portrait.tex
+
+- evince the_wealth_of_networks.yochai_benkler.en.a4.portrait.pdf
+- evince two_bits.christopher_kelty.en.a4.portrait.pdf
+- evince viral_spiral.david_bollier.en.a4.portrait.pdf
diff --git a/org/config_nix.org b/org/config_nix.org
new file mode 100644
index 0000000..4081957
--- /dev/null
+++ b/org/config_nix.org
@@ -0,0 +1,1262 @@
+-*- mode: org -*-
+#+TITLE:       configuration nix
+#+DESCRIPTION: makefile for spine
+#+FILETAGS:    :spine:build:tools:
+#+AUTHOR:      Ralph Amissah
+#+EMAIL:       [[mailto:ralph.amissah@gmail.com][ralph.amissah@gmail.com]]
+#+COPYRIGHT:   Copyright (C) 2015 - 2022 Ralph Amissah
+#+LANGUAGE:    en
+#+STARTUP:     content hideblocks hidestars noindent entitiespretty
+#+PROPERTY:    header-args  :exports code
+#+PROPERTY:    header-args+ :noweb yes
+#+PROPERTY:    header-args+ :results no
+#+PROPERTY:    header-args+ :cache no
+#+PROPERTY:    header-args+ :padline no
+#+PROPERTY:    header-args+ :mkdirp yes
+#+OPTIONS:     H:3 num:nil toc:t \n:t ::t |:t ^:nil -:t f:t *:t
+
+* nix :nix:
+
+#+NAME: nixpkgs_local
+#+BEGIN_SRC sh
+/srv/nix/nixpkgs
+#+END_SRC
+
+** NOTES
+*** nix-shell
+
+- default.nix
+
+#+BEGIN_SRC sh
+nix-shell
+nix-build
+#+END_SRC
+
+- project.nix
+
+#+BEGIN_SRC sh
+nix-shell
+nix-build project.nix
+#+END_SRC
+
+*** nix-shell --pure
+
+- default.nix
+
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+nix-shell --pure
+nix-build -I nixpkgs=<<nixpkgs_local>>
+nix-build -I .envrc
+#+END_SRC
+
+#+BEGIN_SRC sh
+nix build -f default.nix --print-build-logs
+nix build -f derivation.nix --print-build-logs
+nix shell -f default.nix --print-build-logs
+# nix build -f project.nix
+# nix build -f spine.nix
+nix develop --build -f derivation.nix -I .envrc --print-build-logs
+#+END_SRC
+
+*** derivation .drv
+
+#+BEGIN_SRC sh
+nix show-derivation /nix/store/q7n14bm8j5vzm62qaraczdb4bpyf59vv-spine-0.11.1.drv
+#+END_SRC
+
+** spine
+
+- default.nix
+- shell.nix
+
+*** envrc :envrc:
+**** .envrc
+
+- https://github.com/nix-community/nix-direnv
+  - source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-0000000000000000000000000000000000000000000="
+
+#+HEADER: :tangle ../.envrc
+#+BEGIN_SRC sh
+use flake .
+NIX_ENFORCE_PURITY=1
+NixDirEnvVersion="2.2.0"
+if ! has nix_direnv_version || ! nix_direnv_version ${NixDirEnvVersion}; then
+# - https://github.com/nix-community/nix-direnv
+# source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-0000000000000000000000000000000000000000000="
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-5EwyKnkJNQeXrRkYbwwRBcXbibosCJqyIUuz9Xq+LRc="
+fi
+if [ -f .envrc-local ]; then
+  source_env_if_exists .envrc-local || source .envrc-local
+fi
+#+END_SRC
+
+**** .envrc-local CHECK MODIFY
+
+- bespoke modify appropriately and generate if needed
+
+#+HEADER: :tangle ../.envrc-local_
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+# reload when these files change
+watch_file flake.lock
+watch_file flake.nix
+nix flake update; nix flake check; nix flake show
+#use flake .#default
+export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos
+#export NIX_PATH=nixpkgs=/srv/nix/nixpkgs
+export DFLAGS="-O2 -inline -boundscheck=on -color=on"
+## load the flake devShell
+# eval "$(nix print-dev-env)"
+# echo $NIX_BUILD_TOP
+export Date=`date "+%Y%m%d"`
+export SpineVER=$(git describe --long --tags | sed 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g')
+export SpinePROJ=~/grotto/repo/git.repo/projects/doc-reform/code/software/spine-search
+export SpineSRC=$SpinePROJ/src
+#export SpineBIN=$SpinePROJ/result/bin
+export SpineDOC=~/grotto/repo/git.repo/projects/project-spine/doc-reform-markup/spine-markup-samples
+export SpinePOD=$SpineDOC/markup/pod
+#export SpineOUTversioned=/srv/www/spine/$SpineVER
+export SpineOUT=/srv/www/spine
+export SpineDBpath=/var/www/sqlite
+export SpineCgiBIN=/var/www/cgi/cgi-bin
+#+END_SRC
+
+*** makefile
+
+#+HEADER: :tangle ../makefile_
+#+BEGIN_SRC make
+buildPhase:
+	HOME=$${PWD}; \
+	for DC_ in dmd ldmd2 gdmd; do \
+	  echo "- check for D compiler $${DC_}"; \
+	  DC=$$(type -P $${DC_} || echo ""); \
+	  if [ ! "$${DC}" == "" ]; then \
+	    break; \
+	  fi; \
+	done; \
+  echo "D compiler = $${DC}"; \
+	if [ "$${DC}" == "" ]; then \
+    echo "Error: could not find D compiler"; \
+	  exit 1; \
+	fi; \
+	echo "$${DC_} used as D compiler to build $${pname}"; \
+	export DFLAGS="-O2 -inline"; \
+	dub build --compiler=$${DC} --build=release --combined --skip-registry=all;
+checkPhase:
+	runHook preCheck; \
+	HOME=$${PWD}; \
+	dub test --combined --skip-registry=all; \
+	runHook postCheck
+installPhase:
+	runHook preInstall; \
+	mkdir -p $${out}/bin; \
+	install -m755 ./bin/spine $${out}/bin/spine; \
+	runHook postInstall
+	#cp -r bin/spine $out/bin/.
+postInstall:
+	echo "$${out}/share/cgi-bin"; \
+	echo `ls -la $${out}/bin/spine`
+#+END_SRC
+
+*** flake :flake:
+**** flake static :flake:static:
+***** flake.nix
+
+#+HEADER: :tangle ../flake.nix
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+{
+  description                  = "a sisu like document parser search form";
+  inputs.nixpkgs.url           = "github:NixOS/nixpkgs/nixpkgs-unstable"; # "github:nixos/nixpkgs"; "github:NixOS/nixpkgs/nixpkgs-unstable"; "nixpkgs/nixos-unstable"; "nixpkgs/nixos-21.11";
+  inputs.flake-utils.url       = "github:numtide/flake-utils";
+  outputs = { self, nixpkgs, flake-utils }:
+    let
+      version                  = "<<spine_version_set>>";
+      supportedSystems         = [ "x86_64-linux" ]; # [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"  ];
+      forAllSystems            = nixpkgs.lib.genAttrs supportedSystems;
+      nixpkgsFor               = forAllSystems (system: import nixpkgs { inherit system;  }); # nixpkgs instantiated for supported system types.
+    in {
+      packages = forAllSystems (system:
+        let pkgs               = nixpkgsFor.${system};
+        in with pkgs; {
+          default = stdenv.mkDerivation {
+            pname              = "spine_search";
+            inherit version;
+            executable         = true;
+            src                = self;
+            shell              = ./default.nix;
+            devEnv             = ./devenv.nix;
+            buildInputs        = [ sqlite ];
+            nativeBuildInputs  = [ dub ldc ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
+            <<flake_phases>>
+          };
+          #vendorSha256 = "sha256-0Q00000000000000000000000000000000000000000=";
+        });
+      devShells = forAllSystems (system:
+        let pkgs               = nixpkgsFor.${system};
+        in with pkgs; {
+          devShell             = mkShell { buildInputs = [ git dub dmd ldc gdc sqlite ]; };
+        });
+  };
+}
+#+END_SRC
+
+**** flakes
+***** flake single system
+
+#+NAME: flake_single_sytem
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+{
+  description                   = "a sisu like document parser search form";
+  inputs.<<flake_inputs_nix>>
+  outputs = { <<flake_outputs>> }: {
+    packages.x86_64-linux.spine_search =
+      let
+        pkgs = import nixpkgs {
+          system                = "x86_64-linux";
+        };
+        #targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
+      in pkgs.stdenv.mkDerivation {
+        <<flake_metadata>>
+        inherit self;
+        src                     = self;
+        #shell                   = ./shell.nix;
+        shell                   = ./default.nix;
+        devEnv                  = ./devenv.nix;
+        <<flake_phases>>
+        buildInputs             = [ sqlite ];
+        nativeBuildInputs       = with pkgs; [ dub ldc ];
+      };
+    packages.x86_64-linux.default = self.packages.x86_64-linux.spine_search;
+  };
+}
+#+END_SRC
+
+***** flake (multi-system)
+
+#+NAME: flake_multi_system_possible
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+{
+  description                  = "a sisu like document parser search form";
+  inputs.<<flake_inputs_nix>>
+  outputs = { <<flake_outputs>> }:
+    let
+      version                  = "<<spine_version_set>>";
+      supportedSystems         = [ "x86_64-linux" ]; # [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"  ];
+      # helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ...  }'.
+      forAllSystems            = nixpkgs.lib.genAttrs supportedSystems;
+      nixpkgsFor               = forAllSystems (system: import nixpkgs { inherit system;  }); # nixpkgs instantiated for supported system types.
+      <<flake_devshells>>
+    in {
+      packages = forAllSystems (system:
+        let
+          pkgs                 = nixpkgsFor.${system};
+        in {
+          default = pkgs.stdenv.mkDerivation {
+            pname              = "spine_search";
+            inherit version;
+            src                = self;
+            shell              = ./default.nix;
+            devEnv             = ./devenv.nix;
+            buildInputs        = [ sqlite ];
+            nativeBuildInputs  = with pkgs; [ dub ldc ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
+            <<flake_phases>>
+          };
+          #vendorSha256 = "sha256-0Q00000000000000000000000000000000000000000=";
+      });
+  };
+}
+#+END_SRC
+
+*** flake :flake:
+**** notes?
+
+- flake.nix
+    /srv/nix/nixpkgs
+    ./shell.nix
+  - shell.nix
+      ./pkgs/shell-pkgs.nix
+    - pkgs/shell-pkgs.nix
+  - default.nix
+     ./nix/dub.selections.nix #
+    - dub.selections.nix
+
+- nix develop
+
+- nix flake update
+
+- nix shell -f default.nix --print-build-logs
+- nix shell -c default.nix
+
+- nix build `nix-instantiate`
+- nix build -f default.nix --print-build-logs
+- nix shell -f default.nix --print-build-logs
+- nix develop --build -f derivation.nix -I .envrc --print-build-logs
+- nix develop --profile .#default --print-build-logs --command spine -v
+
+- nix search --json 2>/dev/null |jq
+- nix flake show
+- nix show-derivation
+
+# nix-instantiate | nix-build
+
+#nix flake update
+#nix flake check
+#nix flake show
+#nix develop
+#nix build .#default --print-build-logs
+
+
+#+BEGIN_SRC nix
+src = fetchTarball {
+  url       = "file:///[path]/$(pname)-$(version).tar.gz";
+  sha256    = "sha256:0000000000000000000000000000000000000000000000000000";
+};
+#+END_SRC
+
+**** flake parts
+***** flake metadata
+
+#+NAME: flake_metadata
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+pname       = "spine_search";
+version     = "<<spine_version_set>>";
+description = "a sisu like document parser search form";
+#+END_SRC
+
+***** flake inputs
+****** flake inputs static
+
+#+NAME: flake_inputs_nix
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+nixpkgs.url        = "github:nixos/nixpkgs";
+flake-utils.url    = "github:numtide/flake-utils";
+#+END_SRC
+
+***** flake outputs
+****** flake outputs static
+
+#+NAME: flake_outputs
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+self, nixpkgs, flake-utils
+#+END_SRC
+
+***** flake devshells
+
+#+NAME: flake_devshells
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+devShells              = forAllSystems (system:
+  let pkgs             = nixpkgsFor.${system};
+  in {
+    default = pkgs.mkShell {
+      buildInputs      = with pkgs; [ git dub dmd ldc sqlite ];
+    };
+});
+#+END_SRC
+
+***** flake phases
+
+#+NAME: flake_phases
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+buildPhase = ''
+  runHook preBuild
+  HOME="$PWD"
+  for DC_ in dmd ldmd2 ldc2 gdc gdmd; do
+    echo "- check for D compiler $DC_"
+    DC=$(type -P $DC_ || echo "")
+    if [ ! "$DC" == "" ]; then break; fi
+  done
+  if [ "$DC" == "" ]; then exit "Error: could not find D compiler"; fi
+  echo "$DC_ used as D compiler to build $pname"
+  dub build --compiler=$DC --build=$DC_ --combined --skip-registry=all
+  runHook postBuild
+'';
+checkPhase = ''
+  runHook preCheck
+  HOME="$PWD"
+  dub test --combined --skip-registry=all
+  runHook postCheck
+'';
+installPhase = ''
+  runHook preInstall
+  mkdir -p $out/share/cgi-bin
+  install -m755 -D ./cgi-bin/spine_search $out/share/cgi-bin/spine_search
+  runHook postInstall
+'';
+postInstall = ''
+  echo `ls -la $out/share/cgi-bin/spine_search`
+  echo "
+  nix build or nix develop? (suggestions):
+  - nix build
+    nix build .#default --print-build-logs
+    nix flake update; nix build .#default --print-build-logs
+      nix build --print-build-logs
+  - nix run
+    nix run .#default --print-build-logs
+    nix run default.nix --print-build-logs
+  - nix shell
+    nix shell .#default --print-build-logs --command spine -v
+  - nix develop
+    nix develop --profile .#default --print-build-logs --command spine -v
+    nix develop ; eval \"$buildPhase\"
+    nix develop --build -f derivation.nix -I .envrc --print-build-logs
+  - nix profile install . --print-build-logs
+  nix-instantiate | nix show-derivation | jq
+  "
+'';
+#+END_SRC
+
+*** shell.nix :shell:
+**** tangle
+
+#+HEADER: :tangle ../shell.nix
+#+HEADER: :tangle-mode (identity #o755)
+#+HEADER: :shebang "#!/usr/bin/env -S nix-shell --pure\n#!nix-shell -i bash"
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+{ pkgs ? import <nixpkgs> {} }:
+with pkgs;
+mkShell {
+  buildInputs = [
+    direnv
+    nixVersions.unstable #nixFlakes
+    nix-prefetch-git
+    validatePkgConfig
+    nix-tree jq nix-output-monitor
+    git
+    ps
+    ### d_build_related
+    dub
+    ## compiler
+    ldc
+    rund
+    ## linker
+    #lld
+    #mold
+    ## builder
+    #ninja
+    #meson
+    ### sqlite search related
+    sqlite
+    ### tools
+    #aria #wget #curl
+    ### candy
+    #starship
+  ];
+  shellHook = ''
+    #if [[ -f ".envrc" ]]; then
+    #  source .envrc
+    #fi
+    nix flake update
+    echo ""
+    echo "nix flake metadata:"
+    nix flake metadata
+    echo ""
+    echo "nix flake check:"
+    nix flake check
+    echo ""
+    echo "nix flake show:"
+    nix flake show
+    echo "
+      nix flake update
+      nix flake metadata
+      nix flake check
+      nix flake show
+
+      nix build or nix develop? (suggestions):
+
+      - nix build
+        nix build .#default --print-build-logs
+        nix build --print-build-logs
+        nix build .#default --print-build-logs |& nom
+
+      - nix run
+        nix run .#default --print-build-logs
+        nix run default.nix --print-build-logs
+
+      - nix shell
+        nix shell --print-build-logs
+
+      - nix develop
+        nix develop --build  .#default --print-build-logs
+        nix develop --build -f derivation.nix -I .envrc --print-build-logs
+        nix develop ; eval \$buildPhase
+
+        nix-build |& nom
+
+      nix-instantiate | nix show-derivation | jq
+      nix-build . --no-out-link | xargs -o nix-tree
+      nix-tree --derivation .#spine_search
+
+    dub build --compiler=ldmd --build=release --combined --skip-registry=all
+    "
+  '';
+}
+#+END_SRC
+
+echo "ldc `${pkgs.ldc}/bin/ldc2 -v`"
+
+**** Notes
+
+#+BEGIN_SRC text
+#% Notes
+
+# - shell.nix -I .envrc
+# - shell.nix -I .envrc --pure
+
+# [ nix-shell ]
+
+  # - nix-shell -I nixpkgs=/srv/nix/nixpkgs --pure
+  # - nix-shell -p "with import /srv/nix/nixpkgs {}; ldc" --pure
+  # - nix-shell -p "with import /srv/nix/nixpkgs {}; [dub ldc]" --pure
+
+  # - nix-shell -p nixVersions.unstable #nixFlakes
+  # - nix-shell -p nixFlakes --pure
+  # - nix-shell -p nixFlakes --pure -p "with import /srv/nix/nixpkgs {}; [nix dub ldc git ps]"
+  # - nix-shell shell.nix direnv: export +IN_NIX_SHELL
+  # - nix-shell shell.nix
+
+# [ nix-build ]
+
+  # - nix-build -I nixpkgs=/srv/nix/nixpkgs # --pure
+  # - nix-build -I .envrc --pure
+  # - nix-build default.nix -I .envrc && result/bin/spine -v
+
+# [ nix-instantiate ]
+
+  # - nix-instantiate | nix show-derivation | jq
+  # - nix-instantiate -I .envrc | nix show-derivation -f derivation.nix -I .envrc | jq
+  # - nix-instantiate | nix show-derivation --recursive | jq
+  # - nix-instantiate -I .envrc | nix show-derivation -f derivation.nix --recursive -I .envrc | jq
+  # - nix-instantiate | nix-build
+  # - nix-instantiate -I .envrc | nix-build -I .envrc
+
+# [ nix shell ]
+
+  # - nix shell -c default.nix
+  # - nix shell -f default.nix --print-build-logs
+
+# [ nix build ]
+
+  # - nix build -I .envrc --print-build-logs
+  # - nix build -f default.nix --print-build-logs
+  # - nix build -f derivation.nix --print-build-logs
+
+  # - nix build `nix-instantiate`
+  # - nix build `nix-instantiate -I .envrc`
+
+  # - nix build -f default.nix && ./result/bin/spine -v && noti -t "spine build" -m "see ./result/bin/spine"
+  # - nix build .#spine
+
+# [ nix run ]
+
+  # - nix run default.nix --print-build-logs
+  # - nix run -I .envrc default.nix --print-build-logs
+  # - nix run .#spine
+
+# - nix-shell -I .envrc --pure
+# - nix develop --build -f derivation.nix -I .envrc --print-build-logs
+
+# - nix-shell -p nixFlakes --pure -p "with import /srv/nix/nixpkgs {}; [nix dub ldc git ps]"
+# - nix-build
+# - nix build `nix-instantiate -I .envrc`
+
+# - nix develop --build -f default.nix -I .envrc
+
+# - nix-shell -I .envrc --pure
+# - nix-build default.nix -I .envrc && result/bin/spine -v
+
+# - nix shell -f default.nix --print-build-logs
+# - nix-instantiate -I .envrc | nix-build -I .envrc
+#+END_SRC
+
+#+BEGIN_SRC text
+#% Notes
+- nix-shell
+
+- shell.nix --pure
+- shell.nix --pure -I .envrc
+
+- nix-shell --pure -I nixpkgs=<<nixpkgs_local>>
+- nix-shell --pure -p "with import <<nixpkgs_local>> {}; ldc"
+- nix-shell --pure -p "with import /srv/nix/nixpkgs {}; [dub ldc]"
+
+- shell.nix direnv: export +IN_NIX_SHELL
+
+- nix-shell -p nixFlakes
+- nix-shell -p nixFlakes --pure
+- nix-shell -p nixFlakes --pure -p "with import /srv/nix/nixpkgs {}; [dub ldc]"
+
+- shell.nix -I .envrc
+- nix-shell -I nixpkgs=<provide local nix path>
+- nix-shell -I nixpkgs=<provide local nix path> --pure
+- shell.nix
+- nix-shell shell.nix --pure
+
+- nix shell -c default.nix
+
+- nix run default.nix --print-build-logs
+- nix run -I .envrc default.nix --print-build-logs
+
+- nix develop
+
+- nix-build -I nixpkgs=<provide local nix path>
+- nix-build -I .envrc
+
+- nix build -f default.nix --print-build-logs
+- nix build -f derivation.nix --print-build-logs
+- nix build -I .envrc --print-build-logs
+- nix shell -f default.nix --print-build-logs
+- nix develop --build -f derivation.nix -I .envrc --print-build-logs
+
+- buildPhase
+
+- nix build -f default.nix && noti
+- nix build -f default.nix && ./result/bin/spine -v && noti -t "spine build" -m "see ./result/bin/spine"
+- nix develop --build -f derivation.nix -I .envrc --print-build-logs
+
+  ./result/bin/spine
+#+END_SRC
+
+**** shell parts (packages)
+***** packages nix related
+
+#+NAME: shell_packages_nix_related
+#+BEGIN_SRC nix
+### nix_related
+direnv
+nixVersions.unstable #nixFlakes
+nix-prefetch-git
+validatePkgConfig
+jq
+git
+ps
+#+END_SRC
+
+***** packages d build related
+
+#+NAME: shell_packages_d_build_related
+#+BEGIN_SRC nix
+### d_build_related
+## package manager
+dub
+## compiler
+ldc
+rund
+## linker
+#lld
+#mold
+## builder
+#ninja
+#meson
+#+END_SRC
+
+***** packages tools
+
+#+NAME: shell_packages_tool_download
+#+BEGIN_SRC nix
+### tools
+#curl
+#wget
+aria
+#+END_SRC
+
+***** packages candy
+
+#+NAME: shell_packages_candy
+#+BEGIN_SRC nix
+### candy
+starship
+#+END_SRC
+
+***** packages search sqlite related
+
+#+NAME: shell_packages_search_related_sqlite
+#+BEGIN_SRC nix
+### sqlite search related
+sqlite
+#+END_SRC
+
+***** packages pdf latex related
+
+#+NAME: shell_packages_pdf_latex_related
+#+BEGIN_SRC nix
+### pdf_latex_related
+source-sans-pro
+source-serif-pro
+source-code-pro
+texlive.combined.scheme-full
+#+END_SRC
+
+***** packages xml epub related
+
+#+NAME: shell_packages_xml_and_epub_related
+#+BEGIN_SRC nix
+### xml_and_epub_related
+libxml2
+html-tidy
+xmlstarlet
+epubcheck
+ebook_tools
+epr
+sigil
+calibre #(suite includes: ebook-viewer)
+foliate
+#+END_SRC
+
+***** packages i18n_translation related
+
+#+NAME: shell_packages_i18n_translation
+#+BEGIN_SRC nix
+### i18n translation related
+perl534Packages.Po4a
+#+END_SRC
+
+*** default.nix :default:
+
+- default.nix -I nixpkgs=<provide local nix path>
+  e.g. default.nix -I nixpkgs=/srv/nix/nixpkgs
+
+- nix-build -I nixpkgs=<provide local nix path>
+  e.g. nix-build -I nixpkgs=<<nixpkgs_local>>
+
+#+HEADER: :noweb yes
+#+BEGIN_SRC sh
+nix-build -I nixpkgs=<<nixpkgs_local>>
+nix-build -I .envrc-local
+nix-build -I .envrc
+default.nix -I .envrc
+default.nix
+
+nix build -f default.nix --print-build-logs
+nix build -f derivation.nix --print-build-logs
+nix shell -f default.nix --print-build-logs
+nix develop --build -f derivation.nix -I .envrc --print-build-logs
+
+# nix build -f project.nix
+# nix build -f spine.nix
+#+END_SRC
+
+#+HEADER: :tangle ../default.nix
+#+HEADER: :tangle-mode (identity #o755)
+#+HEADER: :shebang "#!/usr/bin/env -S nix-build"
+#+BEGIN_SRC nix
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.callPackage ./devenv.nix {}
+#+END_SRC
+
+#+HEADER: :tangle-mode (identity #o755)
+#+HEADER: :shebang "#!/usr/bin/env -S nix-build"
+#+BEGIN_SRC nix
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.callPackage ./derivation.nix {}
+#+END_SRC
+
+*** devenv.nix :default:devenv:
+
+#+HEADER: :tangle ../devenv.nix
+#+HEADER: :tangle-mode (identity #o755)
+#+BEGIN_SRC nix
+{ pkgs ? import <nixpkgs> { }, name ? "user-env"  }: with pkgs;
+buildEnv {
+  inherit name;
+  extraOutputsToInstall = [ "out" "man" "lib"  ]; # to get all needed symlinks
+  paths = [
+    #nix # if not on NixOS, this is needed
+    direnv
+    nixVersions.unstable #nixFlakes
+    nix-prefetch-git
+    validatePkgConfig
+    nix-tree jq nix-output-monitor
+    git
+    ps
+    ### d_build_related
+    dub
+    ## compiler
+    dmd
+    ldc
+    #gdc
+    #rund
+    ## linker
+    #lld
+    #mold
+    ## builder
+    #ninja
+    #meson
+    ### sqlite search related
+    sqlite
+    # this will create a script that will rebuild and upgrade your setup; using shell script syntax
+    (writeScriptBin "nix-rebuild" ''
+      #!${stdenv.shell}
+      cd <path-to-flake> || exit 1
+      nix flake update
+      nix profile upgrade '.*'
+    '')
+    # puts in your root the nixpkgs version
+      (writeTextFile {
+      name = "nixpkgs-version";
+      destination = "/nixpkgs-version";
+      text = lib.version;
+       })
+  ];
+}
+#+END_SRC
+
+*** derivation.nix :default:
+
+#+HEADER: :tangle ../derivation.nix
+#+HEADER: :tangle-mode (identity #o644)
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+{ pkgs ? import <nixpkgs> {},
+  stdenv ? pkgs.stdenv,
+  lib ? pkgs.lib,
+  ldc ? null,
+  dcompiler ? pkgs.ldc,
+  dub ? pkgs.dub
+}:
+assert dcompiler != null;
+with (
+  with lib;
+  let
+    filterDub = name: type: let baseName = baseNameOf (toString name); in ! ( # filter function to remove the .dub package folder from src
+      type == "directory" && baseName == ".dub"
+    );
+    targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
+    # remove reference to build tools and library sources
+    disallowedReferences = deps: [ dcompiler dub ];
+    removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
+  in {
+    mkDubDerivation = lib.makeOverridable ({
+      src,
+      nativeBuildInputs ? [],
+      dubJSON ? src + "/dub.json",
+      passthru ? {},
+      package ? lib.importJSON dubJSON,
+      ...
+    } @ attrs: stdenv.mkDerivation (attrs // {
+      pname = package.name;
+      nativeBuildInputs = [ dcompiler dub pkgs.removeReferencesTo ] ++ nativeBuildInputs;
+      disallowedReferences = disallowedReferences deps;
+      passthru = passthru // {
+        inherit dub dcompiler pkgs;
+      };
+      src = lib.cleanSourceWith {
+        filter = filterDub;
+        src = lib.cleanSource src;
+      };
+      preFixup = ''
+        find $out/share/cgi-bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true
+      '';
+      buildPhase = ''
+        runHook preBuild
+        HOME="$PWD"
+        DFLAGS="-O2 -inline"
+        for DC_ in dmd ldmd2 gdmd; do
+          echo "- check for D compiler $DC_"
+          DC=$(type -P $DC_ || echo "")
+          if [ ! "$DC" == "" ]; then
+            break
+          fi
+        done
+        if [ "$DC" == "" ]; then
+          exit "Error: could not find D compiler"
+        fi
+        echo "$DC_ used as D compiler to build $pname"
+        dub build --compiler=$DC --build=release --combined --skip-registry=all
+        runHook postBuild
+      '';
+      checkPhase = ''
+        runHook preCheck
+        HOME="$PWD"
+        dub test --combined --skip-registry=all
+        runHook postCheck
+      '';
+      installPhase = ''
+        runHook preInstall
+        mkdir -p $out/share/cgi-bin
+        cp -r "${targetOf package}" $out/share/cgi-bin
+        install -m755 -D $out/share/cgi-bin/spine_search spine_search
+        runHook postInstall
+      '';
+      postInstall = ''
+        echo "HERE ${targetOf package} $out/share/cgi-bin"
+        echo `ls -la $out/share/cgi-bin/spine_search`
+      '';
+      meta = lib.optionalAttrs (package ? description) {
+        description = package.description;
+      } // attrs.meta or {};
+    } // lib.optionalAttrs (!(attrs ? version)) {
+      name = package.name; # use name from dub.json, unless pname and version are specified
+    }));
+  }
+);
+mkDubDerivation rec {
+  name          = "spine-search-${version}";
+  #version       = "<<spine_version_set>>";
+  src           = ./.;
+  buildInputs = [
+    pkgs.sqlite (
+      with pkgs; [
+        nixVersions.unstable #nixFlakes
+        ## package manager
+        dub
+        ## compiler
+        ldc
+        rund
+        ## linker
+        #lld
+        #mold
+        ## builder
+        #ninja
+        sqlite
+      ]
+    )
+  ];
+  meta = with pkgs.lib; {
+    pname       = "spine-search";
+    version     = "<<spine_version_set>>";
+    homepage    = "https://sisudoc.org";
+    description = "cgi sqlite search form for document object search";
+    longDescription = ''
+      a sisu like parser and document generator
+    '';
+    homepage    = "https://sisudoc.org";
+    license     = licenses.agpl3Plus;
+    platforms   = platforms.linux;
+    maintainers = [ "RalphAmissah" ];
+  };
+}
+#+END_SRC
+
+- unused
+  - installPhase
+
+#+BEGIN_SRC txt
+installPhase = ''
+  mkdir -p $out/bin
+  cp spine $out/bin
+  chmod +x $out/bin/spine
+'';
+#+END_SRC
+
+*** project meta
+
+#+NAME: nix_project_meta
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+meta = with pkgs.lib; {
+  pname       = "spine";
+  version     = "<<spine_version_set>>";
+  description = "a sisu like document parser";
+  longDescription = ''
+    A sisu like parser and document generator
+  '';
+  homepage    = "https://sisudoc.org";
+  license     = licenses.agpl3Plus;
+  platforms   = platforms.linux;
+  maintainers = [ "RalphAmissah" ];
+};
+#+END_SRC
+
+*** dub.selections.json
+
+#+HEADER: :NO-tangle ../dub.selections.json
+#+BEGIN_SRC nix
+{
+	"fileVersion": 1,
+	"versions": {
+		"d2sqlite3": "0.19.1",
+		"dyaml": "0.8.3",
+		"imageformats": "7.0.2",
+		"tinyendian": "0.2.0"
+	}
+}
+#+END_SRC
+
+*** dub.selections.nix
+
+#+HEADER: :NO-tangle ../nix/dub.selections.nix
+#+BEGIN_SRC nix
+# This file was generated by https://github.com/lionello/dub2nix v0.2.3
+[ {
+  fetch = {
+    type = "git";
+    url = "https://github.com/dlang-community/d2sqlite3.git";
+    rev = "v0.19.1";
+    sha256 = "0rnsgla6xyr8r34knf7v6dwhacra96q1b5rhxcz9246inwhvrk5k";
+    fetchSubmodules = false;
+    date = "2020-07-21T12:32:51+02:00";
+    deepClone = false;
+    leaveDotGit = false;
+    path = "/nix/store/hsi8xvl15w6fwlqvs042m1z5i88yc72i-d2sqlite3";
+  };
+} {
+  fetch = {
+    type = "git";
+    url = "https://github.com/kiith-sa/tinyendian.git";
+    rev = "v0.2.0";
+    sha256 = "086gf5aga52wr5rj2paq54daj8lafn980x77b706vvvqaz2mlis8";
+    fetchSubmodules = false;
+    date = "2018-06-10T11:04:28+02:00";
+    deepClone = false;
+    leaveDotGit = false;
+    path = "/nix/store/9c7fsmi5am84j6dq2mp3va306x3ay291-tinyendian";
+  };
+} {
+  fetch = {
+    type = "git";
+    url = "https://github.com/kiith-sa/D-YAML.git";
+    rev = "v0.8.3";
+    sha256 = "13wy304xjbwkpgg7ilql1lkxkm83s87jm59ffnrg26slp7cx149q";
+    fetchSubmodules = false;
+    date = "2020-09-19T23:46:57+02:00";
+    deepClone = false;
+    leaveDotGit = false;
+    path = "/nix/store/3i8i56lkmw2xq3lxr5h66v909waq2mqg-D-YAML";
+  };
+} {
+  fetch = {
+    type = "git";
+    url = "https://github.com/lgvz/imageformats.git";
+    rev = "v7.0.2";
+    sha256 = "1mfbsmi4fs1xny4zqs6jyr04d5f4h03r9f6jadvkdqj5kd1k0ws7";
+    fetchSubmodules = false;
+    date = "2019-10-10T07:54:45+03:00";
+    deepClone = false;
+    leaveDotGit = false;
+    path = "/nix/store/wn554pn21nzmpvw2hs7hvv9v9y0sgarg-imageformats";
+  };
+} ]
+#+END_SRC
+
+*** dub2nix & shared pkgs SHARED
+**** dub2nix with pkgs shared
+
+#+NAME: nix_with_pkgs
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+with pkgs; [
+  <<nix_shell_with_pkgs_list>>
+]
+#+END_SRC
+
+**** with pkgs list
+
+#+NAME: nix_shell_with_pkgs_list
+#+BEGIN_SRC nix
+nixVersions.unstable #nixFlakes
+rund
+dub
+ldc
+sqlite
+nix-prefetch-git
+validatePkgConfig
+jq
+git
+#+END_SRC
+
+** variables
+*** spine version SET VERSION :version:set:project:
+
+#+NAME: spine_version_set
+#+BEGIN_SRC sh
+0.12.0
+#+END_SRC
+
+*** set names SET
+
+#+NAME: spine_search_db
+#+BEGIN_SRC sh
+spine.search.db
+#+END_SRC
+
+#+NAME: spine_search_cgi
+#+BEGIN_SRC sh
+spine_search
+#+END_SRC
+
+*** nixpkgs_path SETUP
+**** nixpkgs select path SELECT
+
+#+NAME: nixpkgs_path
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<nixpkgs_path_local>>
+#+END_SRC
+
+**** nixpkgs path options
+
+- <nixpkgs>
+
+#+NAME: nixpkgs_path_default
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<nixpkgs>
+#+END_SRC
+
+#+NAME: nix_path_directory
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+nixpkgs=<<nixpkgs_path_local>>
+#+END_SRC
+
+#+NAME: project_path_local_project
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+~/grotto/repo/git.repo/projects/project-spine/doc-reform
+#+END_SRC
+
+#+NAME: project_path_local_src
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<project_path_local_project>>/src
+#+END_SRC
+
+#+NAME: project_path_local_bin
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<project_path_local_project>>/result/bin
+#+END_SRC
+
+#+NAME: project_path_cgi_bin
+#+BEGIN_SRC nix
+/var/www/cgi/cgi-bin
+#+END_SRC
+
+#+NAME: project_path_local_doc
+#+BEGIN_SRC nix
+~/grotto/repo/git.repo/projects/project-spine/doc-reform-markup/spine-markup-samples
+#+END_SRC
+
+#+NAME: project_path_local_out
+#+BEGIN_SRC nix
+/srv/www/spine/$SpineVER
+#+END_SRC
+
+#+NAME: project_path_local_out_
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+/tmp/spine/$SpineVER/www
+#+END_SRC
+
+#+NAME: project_path_local_out_static
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+/srv/www/spine
+#+END_SRC
+
+#+NAME: project_path_local_out_static_
+#+BEGIN_SRC nix
+/var/www
+#+END_SRC
+
+#+NAME: project_path_sqlite
+#+BEGIN_SRC nix
+/var/www/sqlite
+#+END_SRC
+
+#+NAME: nixpkgs_url
+#+BEGIN_SRC nix
+github:nixos/nixpkgs
+#+END_SRC
+
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
+<<nixpkgs_path_local>>
+#+END_SRC
+
+- local path SET WARN
+
+#+NAME: nixpkgs_path_local
+#+BEGIN_SRC nix
+/srv/nix/nixpkgs
+#+END_SRC
+
+**** project path options
+
+- local path SET WARN
+
+#+NAME: nix_path_channel
+#+BEGIN_SRC nix
+/nix/var/nix/profiles/per-user/root/channels/nixos
+#+END_SRC
+
+** texlive xetex xelatex shell.nix
+*** shell.nix :shell:
+
+#+BEGIN_SRC nix
+#!/usr/bin/env -S nix-shell --pure
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    nixVersions.unstable #nixFlakes
+    nix-prefetch-git
+    validatePkgConfig
+    jq
+    git
+    fontconfig
+    source-sans-pro
+    source-serif-pro
+    source-code-pro
+    #(texlive.combine {
+    #  inherit (texlive) scheme-tetex xetex fontspec footmisc multirow titlesec listings anysize float graphics helvetic times courier;
+    #})
+    texlive.combined.scheme-full
+    dejavu_fonts dejavu_fontsEnv
+    liberation_ttf
+    evince
+    zathura
+    apvlv
+  ];
+    #FONTCONFIG_FILE = makeFontsConf { fontDirectories = [
+    #  liberation_ttf
+    #];
+  shellHook = ''
+    if [[ -f ".envrc" ]]; then
+      source .envrc
+    fi
+    #for texfile in *.tex; do xelatex -interaction=nonstopmode $texfile; done
+    #for texfile in *.tex; do xelatex -interaction=batchmode $texfile; done
+  '';
+}
+#+END_SRC
+
+*** notes
+
+#+BEGIN_SRC sh
+nix-shell --run 'which xetex'
+echo 'for texfile in *.tex; do echo "* --> " ~ $texfile && xelatex -interaction=batchmode $texfile; rm *.aux *.log *.toc *.out; done'
+
+$SpineBIN/spine --latex --serial --output="$SpineOUT" $SpinePOD/* && for texfile in $SpineOUT/latex/*.tex; do xelatex -interaction=nonstopmode $texfile; done 2>&1 | tee _err.xelatex_.org; ls $SpineOUT/latex/*.{tex,pdf}
+
+/run/current-system/sw/share/X11/fonts/
+
+kpsewhich pdftexconfig.tex
+/nix/store/2r4qa8rbll085nmpx56jg1rbmbir1zkp-texlive-combined-2021/share/texmf/tex/generic/tex-ini-files/pdftexconfig.tex
+/nix/store/2r4qa8rbll085nmpx56jg1rbmbir1zkp-texlive-combined-2021/share/texmf/fonts/opentype/public/
+
+find: texclive-fonts.conf
+fc-cache && mkfontscale && mkfontdir
+
+fc-match LiberationSans
+
+cd /nix/var/nix/profiles/system/sw/share/X11/fonts
+fc-query LiberationSans-Regular.ttf | grep '^\s\+family:' | cut -d'"' -f2
+Liberation Sans
+fc-query LiberationMono-Regular.ttf | grep '^\s\+family:' | cut -d'"' -f2
+Liberation Mono
+
+fc-query DejaVuSans.ttf | grep '^\s\+family:' | cut -d'"' -f2
+
+$XDG_DATA_HOME/fonts
+~/.local/share/fonts
+#+END_SRC