richedit: Enter at the end of a table row appends a new row.

dlls/riched20/editor.c

@@ -3701,7 +3701,15 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
       } else if (!editor->bEmulateVersion10) { /* v4.1 */
         if (para->member.para.nFlags & MEPF_ROWEND) {
           if (wstr=='\r') {
-            /* FIXME: Add a new table row after this row. */
+            /* Add a new table row after this row. */
+            para = ME_AppendTableRow(editor, para);
+            para = para->member.para.next_para;
+            editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
+            editor->pCursors[0].nOffset = 0;
+            editor->pCursors[1] = editor->pCursors[0];
+            ME_CommitUndo(editor);
+            ME_CheckTablesForCorruption(editor);
+            ME_UpdateRepaint(editor);
             return 0;
           } else if (from == to) {
             para = para->member.para.next_para;

dlls/riched20/para.c

@@ -220,6 +220,13 @@ ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *run,
       new_para->member.para.pCell = run_para->member.para.pCell;
       assert(run_para->member.para.prev_para->member.para.nFlags & MEPF_CELL);
       assert(!(run_para->member.para.prev_para->member.para.nFlags & MEPF_ROWSTART));
+      if (new_para->member.para.pCell != new_para->member.para.next_para->member.para.pCell
+          && new_para->member.para.next_para->member.para.pCell
+          && !new_para->member.para.next_para->member.para.pCell->member.cell.prev_cell)
+      {
+        /* Row starts just after the row that was ended. */
+        new_para->member.para.nFlags |= MEPF_ROWSTART;
+      }
     } else {
       new_para->member.para.pCell = run_para->member.para.pCell;
     }

dlls/riched20/table.c

@@ -227,7 +227,7 @@ void ME_CheckTablesForCorruption(ME_TextEditor *editor)
         }
         else if (!(p->member.para.nFlags & MEPF_ROWSTART))
         {
-          assert(!(p->member.para.pFmt->wEffects & (PFE_TABLE|PFE_TABLEROWDELIMITER)));
+          assert(!(p->member.para.pFmt->wEffects & PFE_TABLEROWDELIMITER));
           /* ROWSTART must be followed by a cell. */
           assert(!(p->member.para.nFlags & MEPF_CELL));
           /* ROWSTART must be followed by a cell. */
@@ -393,10 +393,7 @@ ME_DisplayItem* ME_AppendTableRow(ME_TextEditor *editor,
   assert(table_row->type == diParagraph);
   if (!editor->bEmulateVersion10) { /* v4.1 */
     ME_DisplayItem *insertedCell, *para, *cell;
-    if (table_row->member.para.nFlags & MEPF_ROWEND)
-      cell = ME_FindItemBack(table_row, diCell);
-    else
-      cell = ME_FindItemFwd(table_row, diCell);
+    cell = ME_FindItemFwd(ME_GetTableRowStart(table_row), diCell);
     run = ME_GetTableRowEnd(table_row)->member.para.next_para;
     run = ME_FindItemFwd(run, diRun);
     editor->pCursors[0].pRun = run;