Fish - Get Current Shell Command

Question

我正在尝试获取当前的shell命令（不是$history[1] ！），特别是我希望能够使用特定的运行程序（例如python (pwd)替换fish_title- (pwd) ，如果我在交互式shell中， vim等

Answer 1

From the documentation :

The first argument to fish_title will contain the most recently executed foreground command as a string, starting with fish 2.2.

So a simple

function fish_title
  echo $argv (set -q SSH_CONNECTION; and hostname)":" $PWD
end

should work.

Answer 2

From the documentation, Special Variables

_, the name of the currently running command.

The default fish_title function does this already, does it not?

function fish_title
    echo $_ " "
    set -q SSH_CONNECTION; and echo (hostname)":"
    pwd
end