fix deleting across nested blocks, closes #341

src/transforms/at-range.js

@@ -92,7 +92,8 @@ export function deleteAtRange(transform, range) {
     transform.moveNodeByKey(child.key, newKey, newIndex)
   })
 
-  transform.removeNodeByKey(endChild.key)
+  const lonely = document.getFurthest(endBlock, p => p.nodes.size == 1) || endBlock
+  transform.removeNodeByKey(lonely.key)
   transform.normalizeDocument()
   return transform
 }

test/transforms/fixtures/at-range/delete-at-range/join-across-nested-blocks/index.js

@@ -0,0 +1,18 @@
+
+export default function (state) {
+  const { document, selection } = state
+  const texts = document.getTexts()
+  const second = texts.get(1)
+  const third = texts.get(2)
+  const range = selection.merge({
+    anchorKey: second.key,
+    anchorOffset: second.length,
+    focusKey: third.key,
+    focusOffset: 0
+  })
+
+  return state
+    .transform()
+    .deleteAtRange(range)
+    .apply()
+}

test/transforms/fixtures/at-range/delete-at-range/join-across-nested-blocks/input.yaml

@@ -0,0 +1,28 @@
+
+nodes:
+  - kind: block
+    type: list
+    nodes:
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: one
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: two
+  - kind: block
+    type: list
+    nodes:
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: three
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: four

test/transforms/fixtures/at-range/delete-at-range/join-across-nested-blocks/output.yaml

@@ -0,0 +1,23 @@
+
+nodes:
+  - kind: block
+    type: list
+    nodes:
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: one
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: twothree
+  - kind: block
+    type: list
+    nodes:
+      - kind: block
+        type: item
+        nodes:
+          - kind: text
+            text: four