保存光标 (DECSC)

以下属性会被保存：

• 绝对屏幕坐标中的光标行与列
• 字符集
• 待处理换行状态
• SGR 属性
• 原点模式 (DEC 模式 6)

任何时候只能保存一个光标。如果重复执行保存光标，先前保存的光标会被覆盖。

主屏幕与备用屏幕拥有各自独立的已保存光标状态。在主屏幕上保存的光标无法从备用屏幕访问，反之亦然。

printf "\033[1;1H" # move to top-left
printf "\033[0J" # clear screen
printf "\033[1;5H"
printf "A"
printf "\0337" # Save Cursor
printf "\033[1;1H"
printf "B"
printf "\0338" # Restore Cursor
printf "X"

|B___AX____|

cols=$(tput cols)
printf "\033[1;1H" # move to top-left
printf "\033[0J" # clear screen
printf "\033[${cols}G"
printf "A"
printf "\0337" # Save Cursor
printf "\033[1;1H"
printf "B"
printf "\0338" # Restore Cursor
printf "X"

|B________A|
|X_________|

printf "\033[1;1H" # move to top-left
printf "\033[0J" # clear screen
printf "\033[1;4;33;44m"
printf "A"
printf "\0337" # Save Cursor
printf "\033[0m"
printf "B"
printf "\0338" # Restore Cursor
printf "X"

|AX________|

"A" 与 "X" 应具有相同的样式。