fish shell可以处理if语句中的if语句吗？

Question

我正在努力让我的config.fish开始工作，但是它没有像预期的那样工作，我真的不明白为什么。我所能做的就是猜测Fish可能无法处理if语句中的if语句？这是我的密码：

echo "so far so good"
if status --is-interactive
    # Chips: fish plugin manager
    if [ -e ~/.config/chips/build.fish ] ; . ~/.config/chips/build.fish ; end

    echo "def interactive"
    # Don't use vi keybindings in unknown terminals,
    # since weird things can happen.
    set acceptable_terms xterm-256color screen-256color xterm-termite
    echo "acceptable terms: $acceptable_terms"
    echo "term: $TERM"
    if contains $TERM acceptable_terms
        echo "good to go!"
        fish_vi_key_bindings
        # Load pywal colors
        cat ~/.cache/wal/sequences
    else
       echo "why?!?!?"
    end
end

我得到的是：

so far so good
def interactive
acceptable terms: xterm-256color screen-256color xterm-termite
term: xterm-termite
why?!?!?

但我希望看到的是：

so far so good
def interactive
acceptable terms: xterm-256color screen-256color xterm-termite
term: xterm-termite
good to go!

但是，当我在shell中运行这个程序时，如果工作正常的话：

❯ echo "term: $TERM / acceptable: $acceptable_terms"                
term: xterm-termite / acceptable: xterm-256color screen-256color xterm-termite
❯ if contains $TERM $acceptable_terms                               
    echo "yay!"
  end
yay!

这里会发生什么事？

Answer 1

当然，fish可以处理嵌套的if语句！

if contains $TERM acceptable\_terms

缺少第二个变量上的$！

if contains $TERM $acceptable_terms