fix selection setting in wrapInline transform

lib/models/selection.js

@@ -444,7 +444,7 @@ class Selection extends new Record(DEFAULTS) {
       anchorOffset: 0,
       focusKey: end.key,
       focusOffset: end.length,
-      isBackward: null
+      isBackward: start == end ? false : null
     })
   }
 

lib/models/state.js

@@ -1056,6 +1056,9 @@ class State extends new Record(DEFAULTS) {
   wrapInline(type, data) {
     let state = this
     let { document, selection } = state
+    const { startKey } = selection
+    const previous = document.getPreviousText(startKey)
+
     document = document.wrapInlineAtRange(selection, type, data)
 
     // Determine what the selection should be after wrapping.
@@ -1064,15 +1067,15 @@ class State extends new Record(DEFAULTS) {
     }
 
     else if (selection.startOffset == 0) {
-      const text = document.getDescendant(selection.startKey)
+      const text = previous
+        ? document.getNextText(previous)
+        : document.getTexts().first()
       selection = selection.moveToRangeOf(text)
-      selection = selection.normalize(document)
     }
 
     else {
       const text = document.getNextText(selection.startKey)
       selection = selection.moveToRangeOf(text)
-      selection = selection.normalize(document)
     }
 
     state = state.merge({ document, selection })

lib/models/transforms.js

@@ -1025,7 +1025,7 @@ const Transforms = {
         : node.updateDescendant(parent.merge({ nodes }))
     })
 
-    return node
+    return node.normalize()
   }
 
 }

test/transforms/fixtures/wrap-inline/twice/index.js

@@ -19,5 +19,17 @@ export default function (state) {
     .wrapInline('outer')
     .apply()
 
+  const updated = next.document.getTexts().get(1)
+
+  assert.deepEqual(
+    next.selection.toJS(),
+    range.merge({
+      anchorKey: updated.key,
+      anchorOffset: 0,
+      focusKey: updated.key,
+      focusOffset: updated.length
+    }).toJS()
+  )
+
   return next
 }