From 40e5b7124f9dd1bb69f2565aaec2190ad300ce53 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 17 Oct 2020 21:45:34 +0530
Subject: [PATCH] Spell check: Fix using non UTF-8 dictionaries broken in
 calibre 5

---
 src/calibre/spell/import_from.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/calibre/spell/import_from.py b/src/calibre/spell/import_from.py
index c4e9e4f106..916ce0b08d 100644
--- a/src/calibre/spell/import_from.py
+++ b/src/calibre/spell/import_from.py
@@ -46,8 +46,8 @@ def parse_xcu(raw, origin='%origin%'):
 def convert_to_utf8(dic_data, aff_data, errors='strict'):
     m = re.search(br'^SET\s+(\S+)$', aff_data[:2048], flags=re.MULTILINE)
     if m is not None:
-        enc = m.group(1)
-        if enc.upper() not in (b'UTF-8', b'UTF8'):
+        enc = m.group(1).decode('ascii', 'replace')
+        if enc.upper() not in ('UTF-8', 'UTF8'):
             try:
                 codecs.lookup(enc)
             except LookupError: