Re: [9front] Re: /bin/"" use of rc -c instead of eval

[sirjofri <sirjofri+ml-9front@sirjofri.de>]

06.07.2024 03:49:46 Romano <me+unobe@fallglow.com>:
> cpu% pwd
> /
> cpu% "" cd /sys
>      cpu% cd /sys/src
> cpu% pwd
> /sys/src
> cpu%

That's not how it's supposed to work though. Let me illustrate:

> cpu% pwd
> /sys/src
> cpu% "
>     cpu% pwd
> cpu% ""
>     cpu% pwd
> /sys/src
> cpu%

" only displays the last command while "" executes it. An optional argument can be used for filtering:

> cpu% pwd
> /sys/src
> cpu% cd /lib
> cpu% "" p
>     cpu% pwd
> /lib
> cpu%

Note that I never tested cd'ing with "", which means a lot. It's probably not as useful in most cases, which makes sense if you think about it: you use cd to switch to another directory. When you're there, running it again is a no-op at best, or it fails.

sirjofri