From b3f17f48c20bcd02de4f5eaac039827d6465b0e4 Mon Sep 17 00:00:00 2001
From: Tushar Sadhwani <tushar.sadhwani000@gmail.com>
Date: Thu, 1 Aug 2024 00:40:34 +0530
Subject: [PATCH] de-duplicate the two regexes

---
 src/blib2to3/pgen2/tokenize.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/blib2to3/pgen2/tokenize.py b/src/blib2to3/pgen2/tokenize.py
index d4b6bc1ddfe..ae26617a4bd 100644
--- a/src/blib2to3/pgen2/tokenize.py
+++ b/src/blib2to3/pgen2/tokenize.py
@@ -136,8 +136,8 @@ def _combinations(*l: str) -> Set[str]:
 )
 
 # beginning of a single quoted f-string. must not end with `{{` or `\N{`
-SingleLbrace = r"(?:\\N{|\\[^{]|{{|[^'\\{])*(?<!\\N){(?!{)"
-DoubleLbrace = r'(?:\\N{|\\[^{]|{{|[^"\\{])*(?<!\\N){(?!{)'
+SingleLbrace = r"(?:\\N{|\\[^{]|{{|[^\n'\\{])*(?<!\\N)({)(?!{)"
+DoubleLbrace = r'(?:\\N{|\\[^{]|{{|[^\n"\\{])*(?<!\\N)({)(?!{)'
 
 # beginning of a triple quoted f-string. must not end with `{{` or `\N{`
 Single3Lbrace = r"(?:\\N{|\\[^{]|{{|'(?!'')|[^'{\\])*(?<!\\N){(?!{)"
@@ -175,8 +175,8 @@ def _combinations(*l: str) -> Set[str]:
 _string_middle_double = r'(?:[^\n"\\]|\\.)*'
 
 # FSTRING_MIDDLE and LBRACE, must not end with a `{{` or `\N{`
-_fstring_middle_single = r"(?:\\N{|\\[^{]|{{|[^\n'{\\])*(?<!\\N)({)(?!{)"
-_fstring_middle_double = r'(?:\\N{|\\[^{]|{{|[^\n"{\\])*(?<!\\N)({)(?!{)'
+_fstring_middle_single = SingleLbrace
+_fstring_middle_double = DoubleLbrace
 
 # First (or only) line of ' or " string.
 ContStr = group(