好的,这是一个持续的烦恼,所以我很自然地想把它带到这里。
在 tcsh 手册页中使用了短语qv,我不知道为什么要插入这四个字符。
它是自我参照的吗?技术参考?文档或语言约定?
以下是上下文中的一些示例。
(+) Variables may be made read-only with `set -r' (q.v.)
Users who need to use the
same set of files with both csh(1) and tcsh can have only a ~/.cshrc
which checks for the existence of the tcsh shell variable (q.v.)
end-of-file (not bound)
Signals an end of file, causing the shell to exit unless the
ignoreeof shell variable (q.v.) is set to prevent this. See
also delete-char-or-list-or-eof.