zsh aliases即使使用“complete\u aliases”选项也不会展开`

eval 迫使 zsh 解析别名 之后 代码已读入:

zsh -c 'setopt aliases complete_aliases; alias d=date; eval d'

d 不会扩展,所以不需要引用。

一般来说你应该 properly quote all arguments to eval

man zshmisc

   There is a commonly encountered problem with aliases illustrated by the
   following code:

        alias echobar='echo bar'; echobar

   This prints a message that the command echobar could not be found.
   This happens because aliases are expanded when the code is read in; the
   entire line is read in one go, so that when echobar is executed it is
   too late to expand the newly defined alias.  This is often a problem in
   shell scripts, functions, and code executed with `source' or `.'.
   Consequently, use of functions rather than aliases is recommended in
   non-interactive code.