From e60162503a5d4f1283395d95aed82ee96ebed537 Mon Sep 17 00:00:00 2001
From: Carmina16 <mistresssilvara@hotmail.com>
Date: Wed, 26 Jan 2022 03:35:47 +0700
Subject: [PATCH] Unwrap line after more characters

Fix line unwrap for Polish. Add Cyrillic alphabet.
---
 src/calibre/ebooks/conversion/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/conversion/utils.py b/src/calibre/ebooks/conversion/utils.py
index 02c90a735b..86dfdd9018 100644
--- a/src/calibre/ebooks/conversion/utils.py
+++ b/src/calibre/ebooks/conversion/utils.py
@@ -365,7 +365,7 @@ class HeuristicProcessor:
 
         # define the pieces of the regex
         # (?<!\&\w{4});) is a semicolon not part of an entity
-        lookahead = "(?<=.{"+str(length)+r"}([a-zა-ჰäëïöüàèìòùáćéíĺóŕńśúýâêîôûçąężıãõñæøþðßěľščťžňďřů,:)\\IAß]|(?<!\&\w{4});))"
+        lookahead = "(?<=.{"+str(length)+r"}([a-zა-ჰäëïöüàèìòùáćéíĺóŕńśúýźâêîôûçąężłıãõñæøþðßěľščťžňďřůёђєіїјљњћўџѣа-я,:)\\IAß]|(?<!\&\w{4});))"
         em_en_lookahead = "(?<=.{"+str(length)+"}[\u2013\u2014])"
         soft_hyphen = "\xad"
         line_ending = "\\s*(?P<style_close></(span|[iub])>)?\\s*(</(p|div)>)?"