In addition, honour the maximum number of history buffers allowed when
creating new ones.
Some implementation information has been obtained from
https://github.com/microsoft/terminal
(under MIT License).
Far-East Asian language (Chinese, Japanese and Korean; CJK) needs special handling in console.
Especially a fullwidth character (mk_wcwidth_cjk(ch) == 2) needs a double width space. A fullwidth character on the console window is treated as a pair of a leading byte and a trailing byte (COMMON_LVB_LEADING_BYTE and COMMON_LVB_TRAILING_BYTE). CORE-12451
