5b3: name the alignment form the bare shape claims, record the reserved names' codes

AGENTS.md

@@ -100,7 +100,10 @@ reuses a code where one fits; the list is complete at `0.1.0`. A code names the
 cause; where one cause recurs across node types, across one mark's attributes or across
 directions, one code covers them all and
 `path` and `message` say which — `unsupported-nesting-depth` is the 500-level guard whichever
-direction hits it, `unspellable-link` the destination and the title alike. A claim code names the spelling claimed, never the node that spelling would have built:
+direction hits it, `unspellable-link` the destination and the title alike. Where two codes stay
+apart, the line between them is what they name: `unspellable-character` is a character CommonMark
+rewrites wherever text holds it, `unspellable-whitespace` the newline no inline directive's
+content slot spans, in either direction. A claim code names the spelling claimed, never the node that spelling would have built:
 a malformed `:::table` is a `malformed-directive`, and an alignment colon a `malformed-pipe-table` —
 the flavour's own delimiter row is `-` runs, so the grammar refuses the colon rather than ADF's
 missing column model doing it. A refusal no spelling recovers from is a gap in the flavour rather
@@ -108,7 +111,11 @@ than a code: give the flavour the spelling and the code goes, which the freeze i
 for. A cause the carry answers gets no code: a mark no
 spelling writes rides the carry with its node. A directive whose name reads back to no node is
 `unknown-directive-name` rather than a claim code — the spelling is well formed, and telling that
-apart from a typo is what a consumer switches on when a later MINOR gives the name meaning. What
+apart from a typo is what a consumer switches on when a later MINOR gives the name meaning. A
+reserved name is a known name, so never that code, and the two the flavour reserves part on form:
+a form the grammar does not have is a claim code — `::adf`, whose carry is the fence — and a
+well-formed form in the wrong place is `unsupported-node-shape`, `::listBreak` parting anything
+but two adjacent lists of one type. What
 the grammar itself refuses stays a claim code, key order among it; a well-formed directive the
 node tables refuse — an attribute a node does not hold or spells elsewhere, a value outside its
 kind or its canonical spelling, an argument or a body its content model does not take — is

corpus/round-trip/block-nodes/adjacent-lists.json

@@ -127,6 +127,54 @@
         }
       ],
       "type": "panel"
+    },
+    {
+      "content": [
+        {
+          "content": [
+            {
+              "content": [
+                {
+                  "content": [
+                    {
+                      "content": [
+                        {
+                          "text": "Head",
+                          "type": "text"
+                        }
+                      ],
+                      "type": "paragraph"
+                    }
+                  ],
+                  "type": "listItem"
+                }
+              ],
+              "type": "bulletList"
+            },
+            {
+              "content": [
+                {
+                  "content": [
+                    {
+                      "content": [
+                        {
+                          "text": "Tail",
+                          "type": "text"
+                        }
+                      ],
+                      "type": "paragraph"
+                    }
+                  ],
+                  "type": "listItem"
+                }
+              ],
+              "type": "bulletList"
+            }
+          ],
+          "type": "listItem"
+        }
+      ],
+      "type": "bulletList"
     }
   ],
   "type": "doc",

corpus/round-trip/block-nodes/adjacent-lists.md

@@ -15,3 +15,9 @@
 ::listBreak
 - Right
 :::
+
+- - Head
+
+  ::listBreak
+
+  - Tail

corpus/round-trip/combinations/carve-out-pipe-table-bare.json

@@ -0,0 +1,38 @@
+{
+  "content": [
+    {
+      "content": [
+        {
+          "text": "Part | Qty",
+          "type": "text"
+        },
+        {
+          "type": "hardBreak"
+        },
+        {
+          "text": "--- | ---",
+          "type": "text"
+        }
+      ],
+      "type": "paragraph"
+    },
+    {
+      "content": [
+        {
+          "text": "Part | Qty",
+          "type": "text"
+        },
+        {
+          "type": "hardBreak"
+        },
+        {
+          "text": ":--- | ---:",
+          "type": "text"
+        }
+      ],
+      "type": "paragraph"
+    }
+  ],
+  "type": "doc",
+  "version": 1
+}

corpus/round-trip/combinations/carve-out-pipe-table-bare.md

@@ -0,0 +1,5 @@
+Part | Qty\
+\--- | ---
+
+Part | Qty\
+\:--- | ---:

spec/flavour.md

@@ -26,7 +26,8 @@ normalizes to it through the round-trip.
   second list on merges instead: ADF records no tightness, so one `- ` spelling reads two
   adjacent lists of a kind back as one. The leaf `::listBreak` parts them, taking the separation
   any directive block takes where it sits. It builds no node, and it reads only between two
-  adjacent lists of one type: elsewhere, or carrying an argument or `{attrs}`, it is a named error.
+  adjacent lists of one type: elsewhere, or carrying an argument, `{attrs}` or a body, it is a
+  named error.
 - Blockquotes prefix lines with `> `; a blank line inside a blockquote is a bare `>`.
 - ATX headings (`#` … `######`); setext input normalizes to ATX.
 - Code fences ``` with the node's language as info string, the fence lengthened past any backtick
@@ -296,9 +297,9 @@ takes the directive form instead. A pipe table parses back to exactly that shape
 Claiming at block level, symmetric with directives: a line opening with an unescaped `|` is
 claimed and must parse as part of a pipe table, else it is a named error — escape the pipe
 (`\|`) to keep it literal text. The shape a missing leading pipe leaves is claimed too: a line
-holding an unescaped `|`, followed inside one paragraph by a line whose cells are all `-` runs
+holding an unescaped `|`, followed inside one paragraph by a line whose cells are all `-` runs,
-and match it in count — GFM's table without the outer pipes — is a named error rather than the
+an alignment colon among them, and match it in count — GFM's table without the outer pipes — is
-prose it reads as. A pipe table is a header row, a delimiter row whose cells are
+a named error rather than the prose it reads as. A pipe table is a header row, a delimiter row whose cells are
 runs of one or more `-` (canonical `---`), and body rows; rows follow code-fence indentation.
 Cells split on unescaped `|` before inline parsing — `\|` stays in the cell text, and the
 inline layer's ordinary CommonMark escaping yields the pipe; each cell is the inline content of

src/markdown/list-break.ts

@@ -1,5 +1,3 @@
-const name = 'listBreak'
+export const listBreakName = 'listBreak'
 
-export const listBreakName = name
+export const listBreakSpelling = `::${listBreakName}`
-
-export const listBreakSpelling = `::${name}`