1 files changed, 41 insertions, 35 deletions

diff --git a/org/spine.org b/org/spine.org
index f1fc7b2..f6e7faa 100644
--- a/org/spine.org
+++ b/org/spine.org
@@ -1282,7 +1282,7 @@ enforce(
 *** 1. _document abstraction_ [#A]
 
 - return tuple of:
-  - doc_abstraction (the document)
+  - doc.abstraction (the document)
   - doc_matters
 
 #+NAME: spine_each_file_do_abstraction
@@ -1292,11 +1292,10 @@ if ((_opt_action.debug_do)
 ) {
   writeln("--->\nstepX commence → (document abstraction) [", manifest.src.filename, "]");
 }
-auto t = spineAbstraction!()(_env, program_info, _opt_action, _cfg, manifest, _make_and_meta_struct);
-static assert(t.length==2);
-auto doc_abstraction = t[dAM.abstraction];
-auto doc_matters = t[dAM.matters];
-if ((doc_matters.opt.action.debug_do)
+auto doc = spineAbstraction!()(_env, program_info, _opt_action, _cfg, manifest, _make_and_meta_struct);
+auto doc_abstraction = doc.abstraction;
+auto doc_matters = doc.matters;
+if ((doc.matters.opt.action.debug_do)
   || (_opt_action.debug_do_stages)
 ) {
   writeln("- stepX complete for [", manifest.src.filename, "]");
@@ -1323,9 +1322,9 @@ if ((doc_matters.opt.action.debug_do)
 #+NAME: spine_each_file_do_debugs_checkdoc_0
 #+BEGIN_SRC d
 /+ ↓ debugs +/
-if (doc_matters.opt.action.show_summary) {
+if (doc.matters.opt.action.show_summary) {
   import sisudoc.meta.metadoc_show_summary;
-  spineMetaDocSummary!()(doc_abstraction, doc_matters);
+  spineMetaDocSummary!()(doc);
 }
 #+END_SRC
 
@@ -1335,9 +1334,9 @@ if (doc_matters.opt.action.show_summary) {
 #+NAME: spine_each_file_do_debugs_checkdoc_1
 #+BEGIN_SRC d
 /+ ↓ debugs +/
-if (doc_matters.opt.action.show_metadata) {
+if (doc.matters.opt.action.show_metadata) {
   import sisudoc.meta.metadoc_show_metadata;
-  spineShowMetaData!()(doc_matters);
+  spineShowMetaData!()(doc.matters);
 }
 #+END_SRC
 
@@ -1347,9 +1346,9 @@ if (doc_matters.opt.action.show_metadata) {
 #+NAME: spine_each_file_do_debugs_checkdoc_2
 #+BEGIN_SRC d
 /+ ↓ debugs +/
-if (doc_matters.opt.action.show_make) {
+if (doc.matters.opt.action.show_make) {
   import sisudoc.meta.metadoc_show_make;
-  spineShowMake!()(doc_matters);
+  spineShowMake!()(doc.matters);
 }
 #+END_SRC
 
@@ -1359,9 +1358,9 @@ if (doc_matters.opt.action.show_make) {
 #+NAME: spine_each_file_do_debugs_checkdoc_3
 #+BEGIN_SRC d
 /+ ↓ debugs +/
-if (doc_matters.opt.action.show_config) {
+if (doc.matters.opt.action.show_config) {
   import sisudoc.meta.metadoc_show_config;
-  spineShowConfig!()(doc_matters);
+  spineShowConfig!()(doc.matters);
 }
 #+END_SRC
 
@@ -1370,17 +1369,17 @@ if (doc_matters.opt.action.show_config) {
 
 #+NAME: spine_each_file_do_debugs_checkdoc_4
 #+BEGIN_SRC d
-if (doc_matters.opt.action.curate) {
-  auto _hvst = spineMetaDocCurate!()(doc_matters, hvst);
+if (doc.matters.opt.action.curate) {
+  auto _hvst = spineMetaDocCurate!()(doc.matters, hvst);
   if (
     _hvst.title.length > 0
     && _hvst.author_surname_fn.length > 0
   ) {
     hvst.curates ~= _hvst;
   } else {
-    if ((doc_matters.opt.action.debug_do)
+    if ((doc.matters.opt.action.debug_do)
       || (_opt_action.debug_do_curate)
-      || (doc_matters.opt.action.vox_gt2)
+      || (doc.matters.opt.action.vox_gt2)
     ) {
       writeln("WARNING curate: document header yaml does not contain information related to: title or author: ", _hvst.path_html_segtoc);
     }
@@ -1394,8 +1393,8 @@ if (doc_matters.opt.action.curate) {
 #+NAME: spine_each_file_do_debugs_checkdoc_5
 #+BEGIN_SRC d
 /+ ↓ debugs +/
-if (doc_matters.opt.action.debug_do) {
-  spineDebugs!()(doc_abstraction, doc_matters);
+if (doc.matters.opt.action.debug_do) {
+  spineDebugs!()(doc.abstraction, doc.matters);
 }
 #+END_SRC
 
@@ -1413,16 +1412,12 @@ if (!(_opt_action.skip_output)) {
 #+NAME: spine_each_file_do_selected_output
 #+BEGIN_SRC d
 /+ ↓ output hub +/
-if (!(doc_matters.opt.action.skip_output)) {
-  if ((_opt_action.debug_do)
-    || (_opt_action.debug_do_stages)
-  ) {
+if (!(doc.matters.opt.action.skip_output)) {
+  if ((_opt_action.debug_do) || (_opt_action.debug_do_stages)) {
     writeln("step5 commence → (process outputs) [", manifest.src.filename, "]");
   }
-  doc_abstraction.outputHub!()(doc_matters);
-  if ((_opt_action.debug_do)
-    || (_opt_action.debug_do_stages)
-  ) {
+  doc.abstraction.outputHub!()(doc.matters);
+  if ((_opt_action.debug_do) || (_opt_action.debug_do_stages)) {
     writeln("- step5 complete for [", manifest.src.filename, "]");
   }
 }
@@ -1489,8 +1484,19 @@ template spineAbstraction() {
     }
     auto doc_matters = ST_DocumentMatters();
     <<spine_each_file_do_document_matters_msg_step4_end>>
-    auto t = tuple(doc_abstraction, doc_matters);
-    return t;
+    auto theDOC() {
+      struct ST_DOC {
+        const auto abstraction() {
+          return doc_abstraction;
+        }
+        auto matters() {
+          return doc_matters;
+        }
+      }
+      return ST_DOC();
+    }
+    auto the_doc = theDOC();
+    return the_doc;
   }
 }
 #+END_SRC
@@ -1589,12 +1595,12 @@ if ((_opt_action.debug_do)
 - prepare the document abstraction used in downstream processing
 
 - _return tuple of_:
-  - document abstraction (_the_document_ or doc_abstraction)
+  - document abstraction (_the_document_ or doc.abstraction)
   - document abstraction keys
     - (head, toc, body, endnotes, glossary, bibliography, bookindex, blurb, tail)
-    - (transfer to _doc_matters_)
-  - segnames for html epub (transfer to _doc_matters_)
-  - image list (transfer to _doc_matters_)
+    - (transfer to _doc.matters_)
+  - segnames for html epub (transfer to _doc.matters_)
+  - image list (transfer to _doc.matters_)
 
 #+NAME: spine_each_file_do_document_abstraction
 #+BEGIN_SRC d
@@ -1632,7 +1638,7 @@ if ((_opt_action.debug_do)
 if ((_opt_action.debug_do)
   || (_opt_action.debug_do_stages)
 ) {
-  writeln("step4 commence → (doc_matters) [", _manifest.src.filename, "]");
+  writeln("step4 commence → (doc.matters) [", _manifest.src.filename, "]");
 }
 #+END_SRC