Skip <code> tags when linkifying groups/users

tildes/tests/test_markdown.py

@@ -338,3 +338,11 @@ def test_username_ref_inside_pre_ignored():
     processed = convert_markdown_to_safe_html(markdown)
 
     assert "<a" not in processed
+
+
+def test_group_ref_inside_code_ignored():
+    """Ensure a group reference inside a <code> tag doesn't get linked."""
+    markdown = "Strikethrough works like: `this ~should not~ work`."
+    processed = convert_markdown_to_safe_html(markdown)
+
+    assert "<a" not in processed

tildes/tildes/lib/markdown.py

@@ -170,7 +170,7 @@ def escape_accidental_ordered_lists(markdown: str) -> str:
 def postprocess_markdown_html(html: str) -> str:
     """Apply post-processing to HTML generated by markdown parser."""
     # list of tag names to exclude from linkification
-    linkify_skipped_tags = ["pre"]
+    linkify_skipped_tags = ["code", "pre"]
 
     # search for text that looks like urls and convert to actual links
     html = bleach.linkify(