fix: Make strikethrough precedence the default; add strikethrough tes…

…ts (#136)

marko/ext/gfm/elements.py

@@ -35,7 +35,7 @@ class InlineHTML(inline.InlineHTML):
 class Strikethrough(inline.InlineElement):
 
     pattern = re.compile(r"~~([^~]+)~~")
-    priority = 4
+    priority = 5
     parse_children = True
 
 

noxfile.py

@@ -5,7 +5,7 @@
 os.environ.update(PDM_IGNORE_SAVED_PYTHON="1")
 
 
-@nox.session(python=["3.6", "3.8", "3.9", "3.10"])
+@nox.session(python=["3.6", "3.8", "3.9", "3.10", "3.11"])
 def tests(session):
     session.run("pdm", "install", "-d", external=True)
     session.run("pytest", "tests/")

tests/test_ext.py

@@ -1,5 +1,7 @@
 #! -*- coding: utf-8 -*-
 
+import pytest
+
 from marko import Markdown
 
 
@@ -76,6 +78,39 @@ class TestGFM:
     def setup_method(self):
         self.markdown = Markdown(extensions=["gfm"])
 
+    def test_strikethrough_link(self):
+        content = "~~[google](https://google.com)~~"
+        assert (
+            self.markdown(content).strip()
+            == '<p><del><a href="https://google.com">google</a></del></p>'
+        )
+
+    def test_strikethrough_inside_link(self):
+        content = "[~~google~~](https://google.com)"
+        assert (
+            self.markdown(content).strip()
+            == '<p><a href="https://google.com"><del>google</del></a></p>'
+        )
+
+    def test_strikethrough_spec_standard(self):
+        content = "~~Hi~~ Hello, world!"
+        expected = "<p><del>Hi</del> Hello, world!</p>"
+        assert self.markdown(content).strip() == expected
+
+    def test_strikethrough_spec_new_paragraph(self):
+        content = """This ~~has a
+
+new paragraph~~."""
+        expected = """<p>This ~~has a</p>
+<p>new paragraph~~.</p>"""
+        assert self.markdown(content).strip() == expected
+
+    @pytest.mark.skip(reason="existing GFM won't-strike bug")
+    def test_strikethrough_spec_wont_strike(self):
+        content = "This will ~~~not~~~ strike."
+        expected = "<p>This will ~~~not~~~ strike.</p>"
+        assert self.markdown(content).strip() == expected
+
     def test_gfm_autolink(self):
         content = "地址：https://google.com"
         assert (