From a67fcb81f1a53ead436ccabaf0f671522dfbfc0e Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 5 Jan 2022 09:39:32 +0530
Subject: [PATCH] Ensure jobs log viewer stay at bottom when appending

---
 src/calibre/gui2/jobs.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/calibre/gui2/jobs.py b/src/calibre/gui2/jobs.py
index 18547aa3df..9c1a0811ca 100644
--- a/src/calibre/gui2/jobs.py
+++ b/src/calibre/gui2/jobs.py
@@ -489,7 +489,11 @@ class DetailView(Dialog):  # {{{
             more = f.read()
             self.next_pos = f.tell()
             if more:
+                v = self.log.verticalScrollBar()
+                atbottom = v.value() >= v.maximum() - 1
                 self.log.appendPlainText(more.decode('utf-8', 'replace'))
+                if atbottom:
+                    v.setValue(v.maximum())
 # }}}