From b0cb031feddc18002e1911afc300ff960cf5dad3 Mon Sep 17 00:00:00 2001
From: "michal.lazo" <michal.lazo@memsource.com>
Date: Thu, 2 Aug 2018 16:29:42 +0200
Subject: [PATCH] move QTextCursor to Start when there isn't any previous line
 TP-17496

---
 src/widgets/widgets/qwidgettextcontrol.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/widgets/widgets/qwidgettextcontrol.cpp b/src/widgets/widgets/qwidgettextcontrol.cpp
index e179ea3..930c274 100644
--- a/src/widgets/widgets/qwidgettextcontrol.cpp
+++ b/src/widgets/widgets/qwidgettextcontrol.cpp
@@ -218,6 +218,14 @@ bool QWidgetTextControlPrivate::cursorMoveKeyEvent(QKeyEvent *e)
     else if (e == QKeySequence::SelectPreviousLine) {
             op = QTextCursor::Up;
             mode = QTextCursor::KeepAnchor;
+            {
+                QTextBlock block = cursor.block();
+                QTextLine line = currentTextLine(cursor);
+                if (!block.previous().isValid()
+                    && line.isValid()
+                    && line.lineNumber() == 0)
+                    op = QTextCursor::Start;
+            }
     }
     else if (e == QKeySequence::SelectNextLine) {
             op = QTextCursor::Down;
-- 
2.9.2.windows.1