Re: Missing documentation "-bash_input"

[Klaus Frank]

Hi,

sorry, but this is not true, I can clearly see that it exists. It may be 
an distro addition though. Is it specific to ArchLinux? Because I can 
see it being used and when I try to use it on my system it also clearly 
works. But against it just being a distro specific thing is that I also 
can see it within the bash source code mirror on GitHub. Where does it 
come from if it is not supposed to exist? Sorry, but something is really 
confusing here.


Example usage: 
https://gitlab.archlinux.org/archlinux/devtools/-/blob/master/src/makechrootpkg.in?ref_type=heads#L152

arch-nspawn "$copydir" "${bindmounts_ro[@]}" "${bindmounts_rw[@]}" \
        bash -c 'yes y | pacman -U -- "$@"' -bash "${pkgnames[@]/#//root/}"


Bash source code on GitHub mirror: 
https://github.com/bminor/bash/blob/master/y.tab.c#L3967

"(--bash_input.location.string) = c;"


Yours sincerely,
Klaus Frank

On 2023-11-28 15:30:20, Andreas Schwab wrote:
> On Nov 28 2023, Klaus Frank wrote:
>
> > I just noticed that the man pages are missing documentation for the
> > "-bash" (or better "-bash_input") parameter.
> There is no such thing as a -bash or -bash_input parameter.
>
> > be better readable when being passed as an argument itself to e.g. nspawn
> > or docker: `echo test1234 | bash -c "echo $@"`, `bash -c "echo $@" -bash
> > "test1234"`, `bash -c "echo $@" -bash_input "test1234"`.
> The first argument passed after -c ... is just a placeholder here, it is
> used to set the $0 special parameter.
>
> $ bash -c 'echo $0 $2 $1' foo bar mumble
> foo mumble bar

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