ui: edit search element on backspace instead of deleting (issue #681)

src/lib_gui/qt/element/QtSmartSearchBox.cpp

@@ -283,8 +283,7 @@ void QtSmartSearchBox::keyPressEvent(QKeyEvent* event)
 		}
 		else if (!hasSelectedText() && cursorPosition() == 0 && m_cursorIndex > 0)
 		{
-			m_elements[m_cursorIndex - 1]->setChecked(true);
-			deleteSelectedElements();
+			editElement(m_elements[m_cursorIndex - 1]);
 			return;
 		}
 	}
@@ -595,15 +594,6 @@ void QtSmartSearchBox::onTextEdited(const QString& text)
 		}
 	}
 
-	if (!match.name.empty() && lastMatchIsNoFilter())
-	{
-		if (!m_matches.empty())
-		{
-			matchesChanged = true;
-		}
-		clearMatches();
-	}
-
 	if (matchesChanged)
 	{
 		setEditText(QString::fromStdWString(match.getFullName()));