bash Bash的vi命令行编辑中区分command-mode和insert-mode的方法
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The way to distinguish command-mode and insert-mode in Bash's Vi command line editing
提问by chuwy
I'm always little bit confused when bash in vi-mode is switched to insert-mode, because it doesn't give any tip about used mode (command or edit). Is there any way to distinguish mods? May be automatic change of cursor color or something like that?
当 vi 模式下的 bash 切换到插入模式时，我总是有点困惑，因为它没有给出有关使用模式（命令或编辑）的任何提示。有什么方法可以区分mod吗？可能会自动更改光标颜色或类似的东西？
采纳答案by Isaac Hanson
in /etc/inputrc (or ~/.inputrc) add this:
在 /etc/inputrc （或 ~/.inputrc）中添加：
set show-mode-in-prompt on
this will prefix your prompt with +while in insert-mode, and :while in command mode in bash 4.3
这将您的前缀与提示+，而在插入模式，和：在命令模式，而在bash 4.3
EDIT:in the latest version of bash 4.4, you will instead get a prompt prefixed with "(ins)" or "(cmd)" by default. but, you can change that:
编辑：在最新版本的 bash 4.4 中，默认情况下您会得到一个以“(ins)”或“(cmd)”为前缀的提示。但是，你可以改变它：
set vi-ins-mode-string "+"
set vi-cmd-mode-string ":"
also, you can use color codes like '\e[1;31m', but surround them with '\1' and '\2' to keep readline happy:
此外，您可以使用像 '\e[1;31m' 这样的颜色代码，但用 '\1' 和 '\2' 将它们包围起来，以保持 readline 愉快：
set vi-cmd-mode-string "\e[1;31m:\e[0m"
回答by laktak
Building on @Isaac Hanson's answer you can set the cursor style to reflect the mode (just like in VIM) by setting these in your .inputrc:
以@Isaac Hanson 的回答为基础，您可以通过在以下内容中设置光标样式来反映模式（就像在 VIM 中一样）.inputrc：
set editing-mode vi
set show-mode-in-prompt on
set vi-ins-mode-string \e[6 q
set vi-cmd-mode-string \e[2 q
# optionally:
# switch to block cursor before executing a command
set keymap vi-insert
RETURN: "\e\n"
This will give you a beam cursor in insert mode or a block cursor for normal mode.
这将为您提供插入模式下的光束光标或正常模式下的块光标。
Other options (replace the number after \e[):
其他选项（替换 后的数字\e[）：
Ps = 0 -> blinking block.
Ps = 1 -> blinking block (default).
Ps = 2 -> steady block.
Ps = 3 -> blinking underline.
Ps = 4 -> steady underline.
Ps = 5 -> blinking bar (xterm).
Ps = 6 -> steady bar (xterm).
Your terminal must support DECSCURSR (like xterm, urxvt, iTerm2). TMUX also supports these (if you set TERM=xterm-256coloroutside tmux).
您的终端必须支持 DECSCURSR（如 xterm、urxvt、iTerm2）。TMUX 也支持这些（如果你TERM=xterm-256color在 tmux 之外设置）。
回答by Clarkey
After years of using vi mode in korn shell, I have basically trained myself to just tap ESCa few times before I type any commands, and ESCthen ito start typing.
在 korn shell 中使用 vi 模式多年后，我基本上已经训练自己ESC在键入任何命令之前轻敲几次，ESC然后i开始键入。
The basic premise being that if you just hit ESC, you know precisely what mode you are in.
基本前提是，如果您只是点击ESC，您就可以准确地知道自己处于什么模式。
