ANSI转义序列保存/恢复光标位置支持 [英] ANSI escape sequence save/restore cursor position support

问题描述

是否有任何支持ANSI转义序列的向上，向下，向前和向后光标键的终端：

Are there any known terminals which support the ANSI escape sequences for cursor keys up, down, forward and back:

CSI n A     Cursor Up
CSI n B     Cursor Down
CSI n C     Cursor Forward
CSI n D     Cursor Back

但不支持保存光标位置和还原光标位置的转义序列吗？

but don't support the save-cursor-position and restore-cursor-position escape sequences?

CSI s       Save Cursor Position
CSI u       Restore Cursor Position

推荐答案

正版VT100（或VT220）无法识别这些用于保存/恢复光标位置的控制序列。它们使用（如xterm的控制序列列表）

A genuine VT100 (or VT220 for that matter) did not recognize these control sequences for save/restore cursor position. They use (as noted in xterm's control sequences list)

ESC 7     Save Cursor (DECSC).
ESC 8     Restore Cursor (DECRC).

这些是 sc 和<$ c terminfo中的$ c> rc 功能；您可能会使用

Those are the sc and rc capabilities in terminfo; you may see these listed using

infocmp vt100
infocmp vt220

CSI s 和 CSI r 可能来自 ansi.sys （请参见终端数据库条目中的 ansi.sys-old ），尽管始终可以使用较旧的资源。

The origin of CSI s and CSI r likely is from ansi.sys (see terminal database entry for ansi.sys-old), though an older source is always possible.

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