间距

🌐 Spacing

除非用引号括起来，否则变量键和值周围的前后空白字符会被忽略。

🌐 Leading and trailing whitespace characters around variable keys and values are ignored unless they are enclosed within quotes.

例如：

🌐 For example:

   MY_VAR_A   =    my variable a
    MY_VAR_B   =    '   my variable b   ' 拷贝

将被视为与以下情况相同：

🌐 will be treated identically to:

MY_VAR_A = my variable a
MY_VAR_B = '   my variable b   ' 拷贝