fix unclosed pi in code span

Python-Markdown · waylan · Nov 23, 2020 · Nov 19, 2020 · Nov 20, 2020 · Nov 20, 2020
commit 0b8480f5e1afcee08d2c25cc8548ad2c11b632de
diff --git a/markdown/extensions/md_in_html.py b/markdown/extensions/md_in_html.py
@@ -206,6 +206,16 @@ def handle_empty_tag(self, data, is_block):
             else:
                 self.handle_data(self.md.htmlStash.store(data))
 
+    def parse_pi(self, i):
+        if self.at_line_start() or self.intail or self.mdstack:
+            # The same override exists in HTMLExtractor without the check
+            # for mdstack. Therefore, use HTMLExtractor's parent instead.
+            return super(HTMLExtractor, self).parse_pi(i)
+        # This is not the beginning of a raw block so treat as plain data
+        # and avoid consuming any tags which may follow (see #1066).
+        self.handle_data('<?')
+        return i + 2
+
 
 class HtmlBlockPreprocessor(Preprocessor):
     """Remove html blocks from the text and store them for later retrieval."""

diff --git a/markdown/htmlparser.py b/markdown/htmlparser.py
@@ -230,6 +230,14 @@ def unknown_decl(self, data):
         end = ']]>' if data.startswith('CDATA[') else ']>'
         self.handle_empty_tag('<![{}{}'.format(data, end), is_block=True)
 
+    def parse_pi(self, i):
+        if self.at_line_start() or self.intail:
+            return super().parse_pi(i)
+        # This is not the beginning of a raw block so treat as plain data
+        # and avoid consuming any tags which may follow (see #1066).
+        self.handle_data('<?')
+        return i + 2
+
     # The rest has been copied from base class in standard lib to address #1036.
     # As __startag_text is private, all references to it must be in this subclass.
     # The last few lines of parse_starttag are reversed so that handle_starttag

diff --git a/tests/test_syntax/blocks/test_html_blocks.py b/tests/test_syntax/blocks/test_html_blocks.py
@@ -1073,6 +1073,27 @@ def test_raw_processing_instruction_indented(self):
             )
         )
 
+    def test_raw_processing_instruction_code_span(self):
+        self.assertMarkdownRenders(
+            self.dedent(
+                """
+                `<?php`
+
+                <div>
+                foo
+                </div>
+                """
+            ),
+            self.dedent(
+                """
+                <p><code>&lt;?php</code></p>
+                <div>
+                foo
+                </div>
+                """
+            )
+        )
+
     def test_raw_declaration_one_line(self):
         self.assertMarkdownRenders(
             '<!DOCTYPE html>',