Fix a bug in element.to_text()

diff --git a/ndcode/pitree/skel/element.py b/ndcode/pitree/skel/element.py
index b1eb364..f40c9cf 100644 (file)
--- a/ndcode/pitree/skel/element.py
+++ b/ndcode/pitree/skel/element.py
@@ -126,7 +126,7 @@ def to_text(root):
     [
       j
       for i in range(len(root.children))
-      for j in [root.text[i], to_text(root[i])]
+      for j in [root.text[i], to_text(root.children[i])]
     ] +
     [root.text[-1]]
   )