fish shell 的自定义函数，用于读出一段文本（类似于 macOS 的 say 命令）

say.fish

function say
	set text $argv[1]
	set text (echo $text | tr -d '\n')
	set salt (date +%s)
	set str1 "2015063000000001""$text""$salt""12345678"
	set sign (echo -n $str1 | md5sum | cut -d ' ' -f1)
	set lang (curl -s "http://api.fanyi.baidu.com/api/trans/vip/translate?from=$lang&to=$transto&appid=2015063000000001&salt=$salt&sign=$sign" --data-urlencode "q=$text" | grep -oP '(?<="from":")[^"]*')
	for i in (echo $argv | sed 's|--*|\\'\n'|g' | sed 's/[ \t]*$//g' | grep -v '^$')
		echo $i | read -l option value
		switch $option
			case l lang
				set lang $value
			case s speed
				set speed $value
		end
	end
	if [ $text ]
		t $text -l $lang
		mpv "https://fanyi.baidu.com/gettts?lan=$lang&text=$text&spd=$speed&source=web" > /dev/null
	else
		echo "say text -l language(zh cte en jp kor pt de spa ru fra) -s speed"
	end
end