fix(html2text): thread escape_backslash into escape_md_section() call

crawl4ai/html2text/__init__.py

@@ -952,6 +952,7 @@ def handle_data(self, data: str, entity_char: bool = False) -> None:
             data = escape_md_section(
                 data,
                 snob=self.escape_snob,
+                escape_backslash=self.escape_backslash,
                 escape_dot=self.escape_dot,
                 escape_plus=self.escape_plus,
                 escape_dash=self.escape_dash,

tests/unit/test_html2text_escape_backslash.py

@@ -0,0 +1,35 @@
+"""Unit tests for CustomHTML2Text's escape_backslash config flag.
+
+escape_backslash is threaded from config.py -> HTML2Text.__init__ -> instance
+attribute, and sibling flags (escape_dot/escape_plus/escape_dash) are all
+forwarded into escape_md_section() at its call site in handle_data(). This
+tests that escape_backslash is forwarded the same way, so that setting it to
+False actually disables backslash escaping in the generated markdown.
+"""
+from crawl4ai.html2text import CustomHTML2Text
+
+
+def _convert(html: str, escape_backslash: bool) -> str:
+    h = CustomHTML2Text()
+    h.body_width = 0
+    h.escape_backslash = escape_backslash
+    return h.handle(html)
+
+
+# RE_MD_BACKSLASH_MATCHER (html2text/config.py) only fires on a backslash
+# followed by a markdown-special char (`*_{}[]()#+-.!), so the repro text
+# must contain a literal backslash immediately before one of those chars.
+HTML_WITH_BACKSLASH = r"<p>Use \* for multiplication</p>"
+
+
+class TestEscapeBackslashConfig:
+    def test_escape_backslash_false_leaves_backslashes_alone(self):
+        """escape_backslash=False must not double the literal backslash."""
+        out = _convert(HTML_WITH_BACKSLASH, escape_backslash=False)
+        assert r"\*" in out
+        assert r"\\*" not in out
+
+    def test_escape_backslash_true_still_escapes(self):
+        """escape_backslash=True (the escape_md_section default) must still escape."""
+        out = _convert(HTML_WITH_BACKSLASH, escape_backslash=True)
+        assert r"\\*" in out