链接或地址显示下划线无法去掉，当前输入行转变后，之前输入行还是显示和当前输入行一样的颜色


The report provides only screenshots and no source file, test, or entry point. Reproduce the link/address rendering and input-line color behavior in the terminal interface, then identify the responsible area and verify that underlines can be removed and earlier input lines retain their intended color after the current line changes.

Written by the indexing model from the issue text.