From 87fadc3702f824e3d3ca70bbd58db1754aaf8789 Mon Sep 17 00:00:00 2001
From: Matt Anderson <matt@manderscience.com>
Date: Wed, 16 Aug 2023 16:29:02 -0500
Subject: [PATCH] fix: brace regex

---
 src/blacken_docs/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/blacken_docs/__init__.py b/src/blacken_docs/__init__.py
index 62d6c36..4f7c734 100644
--- a/src/blacken_docs/__init__.py
+++ b/src/blacken_docs/__init__.py
@@ -24,10 +24,10 @@
     re.DOTALL | re.MULTILINE,
 )
 PYGMENTS_PY_LANG_CLASSES_RE_FRAGMENT = (
-    f"({'|'.join([f'.{lang}' for lang in PYGMENTS_PY_LANGS])})"
+    "(" + "|".join([r"\." + lang for lang in PYGMENTS_PY_LANGS]) + ")"
 )
 MD_BRACE_RE = re.compile(
-    r"(?P<before>^(?P<indent> *)```\s*\{\s*\."
+    r"(?P<before>^(?P<indent> *)```\s*\{\s*"
     + PYGMENTS_PY_LANG_CLASSES_RE_FRAGMENT
     + r"( [^\}\n]*?)?\}\s*?\n)"
     r"(?P<code>.*?)"