如何让在bash当前终端颜色对 [英] how to get current terminal color pair in bash

问题描述

我想查询和存储在BASH例如当前终端颜色对：

 ＃！/斌/庆典#some AN​​SI颜色转义序列
红色=\\ 033 [0;31米
GRN =\\ 033 [0;32米
蓝光=\\ 033 [0;34米DEF =\\ 033 [0;00米＃默认回声-e更改为$ {}红冲至$ {DEF}默认为$ {}蓝光蓝色的。＃现在存储当前的颜色（这恰好是蓝色的），例如：CUR = ????回声-e更改为$ {} GRN绿色，回到了我之前$ {过} CUR
回声-e这将是蓝色的，如果变量Cur包含例如为：0;34米。
回声-e回到默认$ {DEF}
退出0
 

这是逃避我的答案是如何捕捉当前颜色

  CUR = ????
 

解决方案

问题是关于当前的颜色的，而不是光标的位置的

两者都是非标准（尽管后者，光标位置报告是由任何具有合法索赔VT100模拟器执行）。

不过，xterm中实现了一组被称为的动态颜色的，其中preDATE的ANSI颜色功能转义序列。这些设置工作颜色，包括文本前景和背景。我修改这 2002 以允许应用程序与发送的顺序？而不是一个彩色告诉xterm中以返回颜色值，如，

  OSC 1 1？ ST
 

使用的XTerm控制序列给出

符号

I would like to query and store the current terminal color pair in BASH e.g.:

#!/bin/bash

#some ANSI colour escape sequences
red="\033[0;31m"
grn="\033[0;32m"
blu="\033[0;34m"

def="\033[0;00m" # default

echo -e "Change to ${red} red to ${def} default to ${blu} blue."

# now store the current color (which happens to be blue) e.g.:

cur=????

echo -e "Change to ${grn} green and back to what I had before ${cur}"
echo -e "This would be in blue if variable cur contained e.g.: 0;34m."
echo -e "Back to default${def}"
exit 0

The answer that eludes me is how to capture the current color

cur=????

解决方案

The question was about the current color, not the cursor position.

Both are "nonstandard" (though the latter, cursor position report is implemented by anything which has a valid claim to "VT100 emulator").

However, xterm implements a set of escape sequences referred to as dynamic colors, which predate the ANSI color functionality. Those set the working colors including text foreground and background. I modified this in 2002 to allow an application to send the sequence with a "?" rather than a color to tell xterm to return the color value, e.g.,

OSC 1 1 ? ST

using the notation given in XTerm Control Sequences

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