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Summary: Fixed cases mainly come from the fact that ScreenWindow can be larger that TerminalDisplay's image, and the way how selection area is bounded (character's left edge, not first/last character in selection). Test Plan: * Compile with ASAN * Turn on blinking cursor * Slowly change window size to less than 1 line or less than 1 column * If everything is still ok, run `top` or anything that generates longer output Expected result: no overflows * Random selections (normal/block/line/word): * on screen in left/right direction * on screen + in history * selecting history up * selecting history down * first/last character → last/first character in the line * first/last character → last/first character on the screen * all above with wide characters Reviewers: #konsole, hindenburg Reviewed By: #konsole, hindenburg Subscribers: konsole-devel, hindenburg, #konsole Tags: #konsole Differential Revision: https://phabricator.kde.org/D12551
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