From a64f5a01bf6773f286454b9cb014c1c6329cb454 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Ke=C3=9Fler?= <git@maximilian-kessler.de>
Date: Fri, 18 Feb 2022 09:58:27 +0100
Subject: [PATCH] fix guard macro

---
 PyTeX/format/constants.py | 2 +-
 PyTeX/format/macros.py    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/PyTeX/format/constants.py b/PyTeX/format/constants.py
index 331aac2..78d55f9 100644
--- a/PyTeX/format/constants.py
+++ b/PyTeX/format/constants.py
@@ -62,7 +62,7 @@ INS_FILE = [
 
 DRV_FILE = [
     r'\documentclass{{{documentclass}}}',
-    r'{{preamble}}',
+    r'{preamble}',
     r'\begin{{document}}',
     r'\DocInput{{{infile}}}',
     r'\end{{document}}'
diff --git a/PyTeX/format/macros.py b/PyTeX/format/macros.py
index be6ea35..2194a9a 100644
--- a/PyTeX/format/macros.py
+++ b/PyTeX/format/macros.py
@@ -169,7 +169,7 @@ class SimpleSingleLineMacro(SingleLineMacro, ABC):
 
 class GuardMacro(RegexSingleLineMacro):
     def __init__(self):
-        super(GuardMacro, self).__init__(r'<(\*|/|@@=)[a-zA-Z]*>')
+        super(GuardMacro, self).__init__(r'<(\*|/|@@=)[a-zA-Z_]*>')
 
     def _apply(self, line, formatter) -> Union[str, List[str]]:
         match = re.search(self.regex, line)