Line breaks are considered whitespace, hence CR is considered whitespace. It is also a control character. This is similar to TAB, or indeed LF. See here for ex

Line breaks are considered whitespace, hence CR is considered whitespace. It is also a control character. This is similar to TAB, or indeed LF. See here for example: https://en.cppreference.com/w/c/string/byte/isspace https://en.cppreference.com/w/c/string/byte/isspace Or here for Unicode: https://en.wikipedia.org/wiki/Whitespace_character#Unicode https://en.wikipedia.org/wiki/Whitespace_character#Unicode