feat: native support for tracked changes (w:ins in paragraph.text, w:delText in run.text)

Author: AI Assistant

src/docx/oxml/__init__.py

@@ -76,6 +76,7 @@
 register_element_cls("w:ptab", CT_PTab)
 register_element_cls("w:r", CT_R)
 register_element_cls("w:t", CT_Text)
+register_element_cls("w:delText", CT_Text)
 
 # ---------------------------------------------------------------------------
 # header/footer-related mappings

src/docx/oxml/text/paragraph.py

@@ -57,7 +57,7 @@ def clear_content(self):
     @property
     def inner_content_elements(self) -> List[CT_R | CT_Hyperlink]:
         """Run and hyperlink children of the `w:p` element, in document order."""
-        return self.xpath("./w:r | ./w:hyperlink")
+        return self.xpath("./w:r | ./w:hyperlink | ./w:ins/w:r")
 
     @property
     def lastRenderedPageBreaks(self) -> List[CT_LastRenderedPageBreak]:
@@ -99,7 +99,7 @@ def text(self):  # pyright: ignore[reportIncompatibleMethodOverride]
         Inner-content child elements like `w:r` and `w:hyperlink` are translated to
         their text equivalent.
         """
-        return "".join(e.text for e in self.xpath("w:r | w:hyperlink"))
+        return "".join(e.text for e in self.xpath("w:r | w:hyperlink | w:ins/w:r"))
 
     def _insert_pPr(self, pPr: CT_PPr) -> CT_PPr:
         self.insert(0, pPr)

src/docx/oxml/text/run.py

@@ -35,6 +35,7 @@ class CT_R(BaseOxmlElement):
     cr = ZeroOrMore("w:cr")
     drawing = ZeroOrMore("w:drawing")
     t = ZeroOrMore("w:t")
+    delText = ZeroOrMore("w:delText")
     tab = ZeroOrMore("w:tab")
 
     def add_t(self, text: str) -> CT_Text:
@@ -74,7 +75,9 @@ def iter_items() -> Iterator[str | CT_Drawing | CT_LastRenderedPageBreak]:
                 " | w:lastRenderedPageBreak"
                 " | w:noBreakHyphen"
                 " | w:ptab"
+                " | w:ptab"
                 " | w:t"
+                " | w:delText"
                 " | w:tab"
             ):
                 if isinstance(e, (CT_Drawing, CT_LastRenderedPageBreak)):
@@ -134,7 +137,7 @@ def text(self) -> str:
         equivalent.
         """
         return "".join(
-            str(e) for e in self.xpath("w:br | w:cr | w:noBreakHyphen | w:ptab | w:t | w:tab")
+            str(e) for e in self.xpath("w:br | w:cr | w:noBreakHyphen | w:ptab | w:t | w:delText | w:tab")
         )
 
     @text.setter