Fish-shell 在启动时抛出错误。参数数量错误

Question

我已经在 mac 上使用 fish-shell 几个月了，没有任何问题。突然，当我打开终端时，我收到以下错误消息：

/usr/local/share/fish/functions/__fish_pwd.fish (line 1): 
uname
^
in command substitution
    called on line 1 of file /usr/local/share/fish/functions/__fish_pwd.fish

from sourcing file /usr/local/share/fish/functions/__fish_pwd.fish
    called on line 2 of file /usr/local/share/fish/functions/fish_title.fish

in command substitution
    called on line 2 of file /usr/local/share/fish/functions/fish_title.fish

in command substitution
    called on line 3 of file /usr/local/share/fish/functions/fish_title.fish

in function 'fish_title'
    called on standard input

in command substitution
    called on standard input

/usr/local/share/fish/functions/__fish_pwd.fish (line 1): switch: Expected exactly one argument, got 0

switch (uname)
       ^
from sourcing file /usr/local/share/fish/functions/__fish_pwd.fish
    called on line 2 of file /usr/local/share/fish/functions/fish_title.fish

in command substitution
    called on line 2 of file /usr/local/share/fish/functions/fish_title.fish

in command substitution
    called on line 3 of file /usr/local/share/fish/functions/fish_title.fish

in function 'fish_title'
    called on standard input

in command substitution
    called on standard input

/usr/local/share/fish/functions/fish_title.fish (line 1): 
__fish_pwd
^
in command substitution
    called on line 3 of file /usr/local/share/fish/functions/fish_title.fish

in function 'fish_title'
    called on standard input

in command substitution
    called on standard input

我发现参数数量有问题。然而，似乎有 1 个参数，尽管它说有 0 个参数。以下是 __fish_pwd.fish 文件的内容：

switch (uname)
    case 'CYGWIN_*'
        function __fish_pwd --description "Show current path"
            pwd | sed -e 's-^/cygdrive/\(.\)/\?-\u:/-'
        end
    case '*'
        function __fish_pwd --description "Show current path"
            pwd
        end
end

以下是 config.fish 无效时的内容。删除最后一行 export PATH=$M3:$PATH 解决了问题。

# put ~/.local/bin/ in my path
set PATH ~/.local/bin $PATH

# spark
set SPARK_HOME /usr/local/Cellar/apache-spark/2.4.4
set PATH $SPARK_HOME/bin:$PATH
set -x PYSPARK_PYTHON python3.7

# sbt: build tool for scala and java
export M3_HOME=/usr/local/etc/sbtopts
export M3=$M3_HOME/bin
export PATH=$M3:$PATH

Answer 1

However, it appears that there is 1 argument even though it says there is 0.

嗯，不是真的。

它想要的第一个参数是 扩展后。在这种情况下，它运行 uname，并将其输出用作 switch.

的参数

您似乎对系统进行了一些更改，因此 uname 不再打印任何内容 - 也许您添加了一个名为 uname 的函数，或者您更改了 $PATH 以便 uname 不再包括在内。

Fish-shell 在启动时抛出错误。参数数量错误

Fish-shell throws error on startup. Wrong number of arguments

shell

terminal

fish