Tag.interesting_string_types is now propagated when a tag is

  copied. [bug=1990400]

3 files changed, 6 insertions, 1 deletions

diff --git a/CHANGELOG b/CHANGELOG
index a2134ad..066c8c7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -15,6 +15,9 @@ Bazaar repository, the final revision to support Python 2 was 605.
 * The HTMLFormatter and XMLFormatter constructors no longer return a
   value. [bug=1992693]
 
+* Tag.interesting_string_types is now propagated when a tag is
+  copied. [bug=1990400]
+
 * Passing a Tag's .contents into PageElement.extend() now works the
   same way as passing the Tag itself.
 
diff --git a/bs4/element.py b/bs4/element.py
index 98e978f..7f25f27 100644
--- a/bs4/element.py
+++ b/bs4/element.py
@@ -1309,7 +1309,8 @@ class Tag(PageElement):
             sourceline=self.sourceline, sourcepos=self.sourcepos,
             can_be_empty_element=self.can_be_empty_element,
             cdata_list_attributes=self.cdata_list_attributes,
-            preserve_whitespace_tags=self.preserve_whitespace_tags
+            preserve_whitespace_tags=self.preserve_whitespace_tags,
+            interesting_string_types=self.interesting_string_types
         )
         for attr in ('can_be_empty_element', 'hidden'):
             setattr(clone, attr, getattr(self, attr))
diff --git a/bs4/tests/test_pageelement.py b/bs4/tests/test_pageelement.py
index 26783f2..75bab04 100644
--- a/bs4/tests/test_pageelement.py
+++ b/bs4/tests/test_pageelement.py
@@ -694,6 +694,7 @@ class TestPersistence(SoupTest):
         assert tag.can_be_empty_element == copied.can_be_empty_element
         assert tag.cdata_list_attributes == copied.cdata_list_attributes
         assert tag.preserve_whitespace_tags == copied.preserve_whitespace_tags
+        assert tag.interesting_string_types == copied.interesting_string_types
         
     def test_unicode_pickle(self):
         # A tree containing Unicode characters can be pickled.