Fix internal anchors in included file not correctly rewritten

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mkdocs-include-markdown-plugin"
-version = "7.1.3"
+version = "7.1.4"
 description = "Mkdocs Markdown includer plugin."
 readme = "README.md"
 license = "Apache-2.0"

src/mkdocs_include_markdown_plugin/process.py

@@ -315,6 +315,10 @@ def rewrite_url(url: str) -> str:
         except IndexError:  # pragma: no cover
             pass
 
+        # ensure that links to the same file are not rewritten
+        if new_path == '.':
+            new_path = ''
+
         return urlunparse((scheme, netloc, new_path, params, query, fragment))
 
     def found_href(m: re.Match[str], url_group_index: int = -1) -> str:

tests/test_unit/test_include.py

@@ -353,7 +353,6 @@
             [],
             id='rstrip-windows-trailing-newlines',
         ),
-
     ),
 )
 def test_include(

tests/test_unit/test_include_markdown.py

@@ -729,6 +729,33 @@
             [],
             id='include-code-block-to-list-item (#123)',
         ),
+
+        # Internal anchor in included file properly rewritten
+        pytest.param(
+            '''# Header
+
+{% include-markdown "{filepath}" %}''',
+            '''# First level heading
+
+Example data
+
+## Second level heading
+
+Link to [second level heading](#second-level-heading).
+''',
+            '''# Header
+
+# First level heading
+
+Example data
+
+## Second level heading
+
+Link to [second level heading](#second-level-heading).
+''',
+            [],
+            id='internal-anchor',
+        ),
     ),
 )
 def test_include_markdown(