问题描述
通过在终端中使用 ANSI 序列 Esc[39m
,可以在不改变其他属性(如粗体、下划线或背景颜色)的情况下清除前景色.例如:
By using the ANSI sequence Esc[39m
in a terminal, it is possible to clear the foreground color without altering other attributes like bold, underline, or the background color. For example:
echo -e "e[31;1mRed and bold.e[39m Bold only."
我想从 terminfo 功能中检索此序列,但找不到;当尝试使用 setaf 9
时,它通过给出序列 Esc[91m
:
I would like to retrieve this sequence from a terminfo capability, but I'm unable to find it; when trying with setaf 9
, it switches to bright colors by giving the sequence Esc[91m
:
$ tput setaf 1 | xxd
00000000: 1b5b 3331 6d .[31m
$ tput setaf 9 | xxd
00000000: 1b5b 3931 6d .[91m
我发现重置前景色的唯一功能是 sgr0
,但它也会重置所有其他属性.
The only capability I found to reset the foreground color is sgr0
, but it resets all the other attributes as well.
是否可以从 terminfo 访问这些功能?
Is it possible to access these capabilities from terminfo ?
- 默认前景
Esc[39m
; - 默认背景
Esc[49m
;
推荐答案
您必须自己定义它.X/Open 没有定义它,也没有确定的用途.假设您使用的是 ncurses(可扩展),则可以可以通过修改终端描述并为其创建自己的名称来完成,例如,
You'll have to define it yourself. X/Open doesn't define it, and there's no established use for it. Assuming you're using ncurses (which is extensible), that can be done by modifying a terminal description and making up your own name for it, e.g.,
infocmp -x > myinfo.src
printf ' resetf=\E[39m,
' >> myinfo.src
tic -x myinfo.src
(通常会在中创建您的副本$HOME/.terminfo/
).
(which would generally create your copy in $HOME/.terminfo/
).
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