Match with line numbers (#137)

docs/src/release_notes.rst

@@ -8,6 +8,10 @@ These release notes are based on
 sphinx-codeautolink adheres to
 `Semantic Versioning <https://semver.org>`_.
 
+Unreleased
+----------
+- Fix linking blocks with line numbers (:issue:`137`)
+
 0.15.0 (2023-02-05)
 -------------------
 - Fix handling of syntax errors in parsed blocks (:issue:`135`)

src/sphinx_codeautolink/extension/block.py

@@ -1,6 +1,7 @@
 """Code block processing."""
 
 import re
+from copy import copy
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Callable, Dict, List, Optional, Tuple, Union
@@ -305,7 +306,13 @@ def link_html(
 
     for trans in transforms:
         for ix in range(len(inners)):
-            if trans.source.rstrip() == "".join(inners[ix].strings).rstrip():
+            candidate = copy(inners[ix])
+
+            # remove line numbers for matching
+            for lineno in candidate.find_all("span", attrs={"class": "linenos"}):
+                lineno.extract()
+
+            if trans.source.rstrip() == "".join(candidate.strings).rstrip():
                 inner = inners.pop(ix)
                 break
         else:

tests/extension/ref/line_numbers.txt

@@ -0,0 +1,15 @@
+test_project
+test_project.bar
+asdf
+# split
+# split
+Test project
+============
+
+.. code-block:: python
+   :linenos:
+
+   import test_project
+   test_project.bar()
+
+.. automodule:: test_project