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When selecting, the last line gets an added newline if the characters returned from copyLineToStream() are less than the cells selected on that last line. A weird behaviour was that after running: printf ' v\n' printf '\e[KSELECT ME\n' printf '\e[31m\e[Kselect me\n' printf '\e[0m ^\n' selecting "SELECT ME " would add a newline, while selecting "select me " would not add a newline. This is a side-effect of clearImage() resizing lines which end with spaces with the default rendition, so selecting the "SELECT ME" line would get a count of 9 characters, which would make selecting more than the initial 9 characters add a newline, while the "select me" line would have additional spaces with isRealCharacter == false and a non-default rendition. Solve it but making copyLineToStream() not count and not pass to PlainTextDecoder trailing characters where isRealCharacter == false.
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