‼️ BREAKING: Add attrs argument to highligh callback

The highligh callback should not have the signature: `highlight(code, lang, attrs)`.
Implements: markdown-it/markdown-it@866fba3

Author: chrisjsewell

markdown_it/renderer.py

@@ -219,14 +219,19 @@ def fence(self, tokens: Sequence[Token], idx: int, options, env) -> str:
         token = tokens[idx]
         info = unescapeAll(token.info).strip() if token.info else ""
         langName = ""
+        langAttrs = ""
 
         if info:
             langName = info.split()[0]
+            arr = info.split(maxsplit=1)
+            langName = arr[0]
+            if len(arr) == 2:
+                langAttrs = arr[1]
 
         if options.highlight:
-            highlighted = options.highlight(token.content, langName) or escapeHtml(
-                token.content
-            )
+            highlighted = options.highlight(
+                token.content, langName, langAttrs
+            ) or escapeHtml(token.content)
         else:
             highlighted = escapeHtml(token.content)
 

tests/test_port/test_misc.py

@@ -0,0 +1,14 @@
+from markdown_it import MarkdownIt
+from markdown_it import presets
+
+
+def test_highlight_arguments():
+    def highlight_func(str_, lang, attrs):
+        assert lang == "a"
+        assert attrs == "b  c  d"
+        return "<pre><code>==" + str_ + "==</code></pre>"
+
+    conf = presets.commonmark.make()
+    conf["options"]["highlight"] = highlight_func
+    md = MarkdownIt(config=conf)
+    assert md.render("``` a  b  c  d \nhl\n```") == "<pre><code>==hl\n==</code></pre>\n"