[Peter_Dyballa@Web.DE: popd in tcsh fails]

[Peter_Dyballa@Web.DE: popd in tcsh fails]

[Richard Stallman]

[I sent this message twice before but did not get a response.]

Can someone please look at this, then ack to me?

------- Start of forwarded message -------
To: emacs-pretest-bug@gnu.org
From: Peter Dyballa <Peter_Dyballa@Web.DE>
Date: Wed, 20 Jul 2005 15:36:11 +0200
X-Sender: Peter_Dyballa@web.de
Subject: popd in tcsh fails
Sender: emacs-pretest-bug-bounces+rms=gnu.org@gnu.org
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Hello!

I am using tcsh 6.12.00 in *shell* mode and GNU Emacs does not seem to 
understand popd, i.e. after a popd in *shell* file name completion or 
dired start with the directory that was before my working directory. 
These variables are customized:

	 '(comint-completion-recexact t)
	 '(comint-input-ignoredups t)
	 '(comint-input-ring-file-name ".emacs.d/history")
	 '(comint-prompt-regexp "^[a-z]+ [0-9]+ /\\\\ " t)
	 '(comint-use-prompt-regexp nil)
	 '(shell-cd-regexp "[cp]d")
	 '(shell-dirtrack-verbose nil)
	 '(shell-pushd-regexp "p(ush|)d")

Important settings:
   value of $LC_ALL: de_DE.UTF-8
   value of $LC_COLLATE: nil
   value of $LC_CTYPE: nil
   value of $LC_MESSAGES: nil
   value of $LC_MONETARY: nil
   value of $LC_NUMERIC: nil
   value of $LC_TIME: nil
   value of $LANG: de_DE.UTF-8
   locale-coding-system: utf-8
   default-enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
   display-time-mode: t
   mouse-sel-mode: t
   show-paren-mode: t
   desktop-save-mode: t
   tool-bar-mode: t
   mouse-wheel-mode: t
   tooltip-mode: t
   auto-compression-mode: t
   menu-bar-mode: t
   global-font-lock-mode: t
   font-lock-mode: t
   blink-cursor-mode: t
   column-number-mode: t
   line-number-mode: t
   transient-mark-mode: t
   next-error-follow-minor-mode:  Fol

- --
Greetings

   Pete

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the Universe trying
to produce bigger and better idiots. So far, the Universe is winning."
                                                           -- Rich Cook



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------- End of forwarded message -------

Re: [Peter_Dyballa@Web.DE: popd in tcsh fails]

[Emilio Lopes]

Richard Stallman writes:

> Can someone please look at this, then ack to me?

I started Emacs with this command:

   ./src/emacs --no-init-file --no-site-file -l ~/tcsh-init.el

The file ~/tcsh-init.el contains the following:

   (setq shell-file-name "tcsh")
   (setenv "SHELL" shell-file-name)
   (setq explicit-shell-file-name shell-file-name)

   (setq comint-completion-recexact t)
   (setq comint-input-ignoredups t)
   (setq comint-input-ring-file-name ".emacs.d/foo_history")
   (setq comint-prompt-regexp "^[a-z]+ [0-9]+ /\\\\ ")
   (setq comint-use-prompt-regexp nil)
   (setq shell-cd-regexp "[cp]d")
   (setq shell-dirtrack-verbose nil)
   (setq shell-pushd-regexp "p(ush|)d")


The first three lines are there to convince shell-mode to start `tcsh'
as the default shell.  The rest are variables customized by original
bug reporter.

My first test was to issue a "pushd /etc" and see if a "C-x C-f" would
offer me that directory as the default one.  Test failed.  Emacs is
not even recognizing "pushd"s.

So I noted that the customization of `shell-pushd-regexp' (see above)
is bogus.  I changed that to

   (setq shell-pushd-regexp "p\\(ush\\|\\)d")

and tried some "pushd"s and "popd"s again.  Emacs seems to correctly
keep track of the working directory now.

The problem was not tcsh specific AFAICT. 

Re: [Peter_Dyballa@Web.DE: popd in tcsh fails]

[Emilio Lopes]

Emilio Lopes writes:


[...]

> So I noted that the customization of `shell-pushd-regexp' (see
> above) is bogus.  I changed that to

>    (setq shell-pushd-regexp "p\\(ush\\|\\)d")

> and tried some "pushd"s and "popd"s again.  Emacs seems to correctly
> keep track of the working directory now.

BTW, I've just got an e-mail from Peter Dyballa acknowledging that
this was indeed the problem.

Re: [Peter_Dyballa@Web.DE: popd in tcsh fails]

[Richard M. Stallman]

    So I noted that the customization of `shell-pushd-regexp' (see above)
    is bogus.  I changed that to

       (setq shell-pushd-regexp "p\\(ush\\|\\)d")

It looks like this isn't an Emacs bug.  Thanks for investigating it.

Re: Fwd: popd in tcsh fails

[Stefan Monnier]

> [I sent this message twice before but did not get a response.]
> Can someone please look at this, then ack to me?
[...]
> I am using tcsh 6.12.00 in *shell* mode and GNU Emacs does not seem to 
> understand popd, i.e. after a popd in *shell* file name completion or 
> dired start with the directory that was before my working directory. 
> These variables are customized:

> 	 '(comint-completion-recexact t)
> 	 '(comint-input-ignoredups t)
> 	 '(comint-input-ring-file-name ".emacs.d/history")
> 	 '(comint-prompt-regexp "^[a-z]+ [0-9]+ /\\\\ " t)
> 	 '(comint-use-prompt-regexp nil)
> 	 '(shell-cd-regexp "[cp]d")
> 	 '(shell-dirtrack-verbose nil)
> 	 '(shell-pushd-regexp "p(ush|)d")

I don't know about popd, but his regexp for pushd is broken (he forgot to
escape the (, ), and | operators), so I'd say this is not a bug.


        Stefan