From 9acec3c309bb86d591441979e1633309c5b480db Mon Sep 17 00:00:00 2001
From: JB <jb-apps@outlook.com>
Date: Thu, 30 Oct 2025 06:54:33 -0700
Subject: [PATCH] fix: Refactor regex patterns for number ranges and fractions
 to improve accuracy

---
 abogen/kokoro_text_normalization.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/abogen/kokoro_text_normalization.py b/abogen/kokoro_text_normalization.py
index d127668..cb37940 100644
--- a/abogen/kokoro_text_normalization.py
+++ b/abogen/kokoro_text_normalization.py
@@ -94,13 +94,15 @@ CONTRACTIONS_EXACT = {
 # For ambiguous 'd and 's we handle separately
 _NUMBER_WITH_GROUP_RE = re.compile(r"(?<![\w\d])(-?\d{1,3}(?:,\d{3})+)(?![\w\d])")
 _NUMBER_RANGE_SEPARATORS = "-‐‑–—−"
+_NUMBER_RANGE_CLASS = re.escape(_NUMBER_RANGE_SEPARATORS)
 _WIDE_RANGE_SEPARATORS = {"–", "—"}
 _NUMBER_RANGE_RE = re.compile(
-    rf"(?<!\w)(?P<left>-?\d+)(?P<sep>\s*[{_NUMBER_RANGE_SEPARATORS}]\s*)(?P<right>-?\d+)(?![\w{_NUMBER_RANGE_SEPARATORS}/])"
+    rf"(?<!\w)(?P<left>-?\d+)(?P<sep>\s*[{_NUMBER_RANGE_CLASS}]\s*)(?P<right>-?\d+)(?![\w{_NUMBER_RANGE_CLASS}/])"
 )
 _FRACTION_SLASHES = "/⁄"
+_FRACTION_SLASH_CLASS = re.escape(_FRACTION_SLASHES)
 _FRACTION_RE = re.compile(
-    rf"(?<!\w)(?P<numerator>-?\d+)\s*[{_FRACTION_SLASHES}]\s*(?P<denominator>-?\d+)(?![\w{_FRACTION_SLASHES}])"
+    rf"(?<!\w)(?P<numerator>-?\d+)\s*[{_FRACTION_SLASH_CLASS}]\s*(?P<denominator>-?\d+)(?![\w{_FRACTION_SLASH_CLASS}])"
 )