Hi Iblis,
I see no such problem running 'basename $HOME' in a normal shell environment:
> $ basename $HOME
> cmeyer
I suppose in your use, perhaps stdin is already closed? I think this
is a limitation of caph_limit_stdio() in general.
Can you try instead:
function set_prompt {
prompt="$(basename $HOME < /dev/null) >"
}
And see if it resolves the issue?
Thanks,
Conrad
On Sun, Nov 27, 2016 at 8:33 PM, iblis <ib...@hs.ntnu.edu.tw> wrote:
> Hi,
> Here is a minimal config of zsh prompt invoking `basename`:
> ```
> └─[iblis@abeing]% cat /home/ib-test/.zshenv
>
> function set_prompt {
> prompt="$(basename $HOME) >"
> }
>
> function zle-line-init zle-keymap-select {
> set_prompt
> zle reset-prompt
> }
>
> zle -N zle-line-init
> zle -N zle-keymap-select
>
> set_prompt
> ```
>
> and launching zsh will get something like this:
>
> ```
> └─[iblis@abeing]% sudo su ib-test
>
> ib-test >basename: capsicum: Bad file descriptor
>>
>>basename: capsicum: Bad file descriptor
>>
> ```
>
>
> To be honest, I have no idea about what casper/caspicum is. I just changed
> the `basename.c` and zsh work again.
>
> Index: basename.c
> ===================================================================
> --- basename.c (revision 309213)
> +++ basename.c (working copy)
> @@ -65,7 +65,7 @@
>
> setlocale(LC_ALL, "");
>
> - if (caph_limit_stdio() < 0 || (cap_enter() < 0 && errno != ENOSYS))
> + if (cap_enter() < 0 && errno != ENOSYS)
> err(1, "capsicum");
>
> aflag = 0;
>
>
> Any idea?
>
> --
> Iblis Lin
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