\x1b（B）是做什么的？

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问题描述

我是用户，最近，当我尝试查找内容时 term.bold（）函数的输出，我得到以下输出：
\x1b [1m\x1b（B\x1b [m

I'm a Blessed user, and recently, when I tried to find out the contents of the term.bold() function, I got this output:\x1b[1m\x1b(B\x1b[m

我理解 \x1b [1m 和 \x1b [m 可以，但是 \x1b（B 可以做什么？我尝试打印它，但似乎没有

I understand what \x1b[1m and \x1b[m do, but what does \x1b(B do? I tried printing it, but it doesn't seem to do anything at all.

预先感谢！

推荐答案

控制序列 \x1b（B 选择默认字符集ASCII。请参见：

The control sequence \x1b(B selects the default character set ASCII. See XTerm Control Sequences:


ESC ( C   Designate G0 Character Set (ISO 2022, VT100).
          Final character C for designating 94-character sets.  In this
          list, 0 , A  and B  apply to VT100 and up, the remainder to
          VT220 and up.  The VT220 character sets, together with the
          Portuguese character set are activated by the National
          Replacement Character controls.  The A  is a special case,
          since it is also activated by the VT300-control for British
          Latin-1 separately from the National Replacement Character
          controls.
    ...
            C = B  -> United States (USASCII).

仅在将终端设置为其他字符集的情况下提供，例如。可能是在 \x1b（B\ x1b [m ，例如，

That is provided just in case the terminal was set to some other character set, e.g., line-drawing. Blessed is probably retrieving this as part of \x1b(B\x1b[m, e.g., in

    normal = tigetstr('sgr0')

进一步阅读：

How do I get color with VT100?
VT100.net

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