What steps will reproduce the problem?

in !BAT file with UTF-8 encoding

set /u /p:4 ask= 暂存 XP ISO 到内存吗？如果从 USB-HDD 启动或遭遇了蓝屏死机问题，请选 Y （Y/[N]）

What is the expected output? What do you see instead? should prompt but get < Report bug! lpos=0, start=-14, len=97, llen=0, plen=106, section=1

if line is shortened then it works OK - so is line length issue.

What version of the product are you using? On what operating system? 0.4.5c 2104

Please provide any additional information below.

max length = 97 - but if UTF-8 used then max length is only 49 because each glyph is 2 bytes.

Can length be increased?

Same as issue #163 - sorry - reported twice!