From fdcd6d746ca5732f783023c82a6e18841ee57c40 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 24 Dec 2018 22:53:14 +0530
Subject: [PATCH] macOS: Fix for random srashes when using the edit book tool
 on Mojave. Fixes #1805521 [e-book edit (3.34.0) repeatedly crashes when
 editing an epub file](https://bugs.launchpad.net/calibre/+bug/1805521)

---
 src/calibre/gui2/tweak_book/editor/syntax/html.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/gui2/tweak_book/editor/syntax/html.py b/src/calibre/gui2/tweak_book/editor/syntax/html.py
index e0296dd5e3..96ce24940e 100644
--- a/src/calibre/gui2/tweak_book/editor/syntax/html.py
+++ b/src/calibre/gui2/tweak_book/editor/syntax/html.py
@@ -73,6 +73,7 @@ if _speedup is not None:
     def spell_property(sfmt, locale):
         s = QTextCharFormat(sfmt)
         s.setProperty(SPELL_LOCALE_PROPERTY, locale)
+        s.mem = locale  # ensure locale is not garbage collected
         return s
     _speedup.init(spell_property, dictionaries.recognized, split_into_words_and_positions)
     del spell_property