10a - a rule opening a list item gives way, and the list stays a list

src/markdown/emit/plain-reduction.test.ts

@@ -216,7 +216,8 @@ test('spells a node no row names, or one standing where no spelling holds it, as
   assert.equal(plain(bulletList(said('stray'), item(said('b')), text('loose'))), '- stray\n- b\n- loose\n')
   assert.equal(plain(bulletList()), '')
   assert.equal(plain(bulletList(item({ content: [text('a\n  \nb')], type: 'codeBlock' }))), '- ```\n  a\n\n  b\n  ```\n')
-  assert.equal(plain(bulletList(item(node('rule', {}), said('x')))), '---\n\nx\n')
+  assert.equal(plain(bulletList(item(node('rule', {}), said('Install')), item(said('Configure')))), '- Install\n- Configure\n')
+  assert.equal(plain(bulletList(item(bulletList(item(bulletList(item())))))), '- -\n')
   assert.equal(plain(node('nestedExpand', {}, node('tableCell', {}, said('c')))), '> [!NOTE]-\n>\n> c\n')
 })
 

src/markdown/emit/plain-reduction.ts

@@ -212,9 +212,9 @@ function listItem(blocks: Result<AdfNode[]>): Result<AdfNode[]> {
   return blocks.ok ? success([itemOf(blocks.value)]) : blocks
 }
 
-// A list item holds no line of spaces alone, and a code line of them is what a reader does not see.
+// A list item's first line reads as no rule and holds no line of spaces alone: the rule and the spaces give way.
 function itemOf(blocks: readonly AdfNode[]): AdfNode {
-  const content = blocks.map((block) => (block.type === 'codeBlock' ? { ...block, content: nodeContent(block).map(blankedLines) } : block))
+  const content = (blocks[0]?.type === 'rule' ? blocks.slice(1) : blocks).map((block) => (block.type === 'codeBlock' ? { ...block, content: nodeContent(block).map(blankedLines) } : block))
   return { content, type: 'listItem' }
 }