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Re: should this result in an endless loop ?


From: Alex fxmbsw7 Ratchev
Subject: Re: should this result in an endless loop ?
Date: Sun, 28 Nov 2021 07:13:51 +0100

On Sat, Nov 27, 2021, 20:30 Lawrence Velázquez <vq@larryv.me> wrote:

> Please stop randomly switching email addresses within your own
> threads.
>

sorry i have the list subscribed twice, i couldnt answer my first email
with the comment cause it didnt appear

> On Sat, Nov 27, 2021, 20:06 Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>
> wrote:
> >
> >> in the progress to represent another bug report about something, i made
> >> this nonfunctional code
> >>
> >> printf '(( $# )) && . afile' >afile
> >>
> >> i run it with . afile a or bash afile a
> >> then it ends up never ending
> >> in set -x theres like dozens of '+' deep doing the code
>
> A demonstration for the curious:
>
>     % cat >afile <<\EOF
>     heredoc> (( $# )) && . afile
>     heredoc> EOF
>     % bash -x afile a
>     + ((  1  ))
>     + . afile
>     ++ ((  1  ))
>     ++ . afile
>     +++ ((  1  ))
>     +++ . afile
>     ++++ ((  1  ))
>     ++++ . afile
>     +++++ ((  1  ))
>     +++++ . afile
>     [...]
>
> On Sat, Nov 27, 2021, at 2:08 PM, ikhxcsz7y xmbott wrote:
> > maybe the '. file' didnt apply 'noargs given'
>
> Yes, when you run ''.  afile'' without arguments, the positional
> arguments are not cleared.  The manual states this explicitly.
>

i see, didnt know, thanks

>
>     . filename [arguments]
>
>       Read and execute commands from the `filename` argument in the
>       current shell context.  [...]  If any `arguments` are supplied,
>       they become the positional parameters when `filename` is
>       executed.  Otherwise the positional parameters are unchanged.
>
>
> https://www.gnu.org/software/bash/manual/html_node/Bourne-Shell-Builtins.html#index-_002e
>
> --
> vq
>
>


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