[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: let*: Wrong type argument: stringp, nil
From: |
Hongyi Zhao |
Subject: |
Re: let*: Wrong type argument: stringp, nil |
Date: |
Tue, 28 Sep 2021 13:25:51 +0800 |
On Tue, Sep 28, 2021 at 11:22 AM Emanuel Berg via Users list for the
GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:
>
> Hongyi Zhao wrote:
>
> > Now I'm trying another test code snippet based on the idea
> > posted here [1]:
> >
> > (defun desperately-pyvenv-workon()
> > "Traveling up the path, find a `.python-version' and activate the
> > corresponding virtualenv."
> > (interactive)
> > (with-temp-buffer
> > (unless (equal(getenv "HOME") default-directory)
> > (while (not (file-exists-p ".python-version"))
> > (cd "..")
> > ))
> > (when(file-exists-p ".python-version")
> > (message(expand-file-name ".python-version")))))
> >
> > (desperately-pyvenv-workon)
> >
> > [1] https://emacs.stackexchange.com/a/7477
> >
> > But when I test the above code in scratch buffer, it seems to be stuck
> > in an endless loop and running there all the time.
>
> Eval this
>
> (cd "..")
>
> enough times and it alternates between "/" and "/../"
> indefinitely, maybe that's what happens?
>
> (But I don't know why, or what it tries to say with "/../"
> which should be equivalent to "/" ... in the shell, cd from /
> does not lead to /../ but will stay in /)
They are really equivalent:
werner@X10DAi-00:/$ realpath -e /../
/
werner@X10DAi-00:/$ realpath -e /
/
- Re: let*: Wrong type argument: stringp, nil, (continued)
- Re: let*: Wrong type argument: stringp, nil, Stephen Berman, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Stephen Berman, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Stephen Berman, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/25
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/27
- Re: let*: Wrong type argument: stringp, nil, Emanuel Berg, 2021/09/27
- Re: let*: Wrong type argument: stringp, nil, Emanuel Berg, 2021/09/27
- Re: let*: Wrong type argument: stringp, nil,
Hongyi Zhao <=
- Re: let*: Wrong type argument: stringp, nil, Emanuel Berg, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Yuri Khan, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Emanuel Berg, 2021/09/28
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/29
- Re: let*: Wrong type argument: stringp, nil, Emanuel Berg, 2021/09/29
- Re: let*: Wrong type argument: stringp, nil, Hongyi Zhao, 2021/09/29