To: cygwin@cygwin.com
From: Eric Lilja <mindcooler@gmail.com>
Subject:  Re: Using cygwin bash shell with NT Emacs, path is not setup perfectly
Date:  Sun, 26 Aug 2007 18:42:28 +0200
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Message-ID: <fasahl$g02$1@sea.gmane.org>
References:  <fapb84$s4n$1@sea.gmane.org> <faqhiu$o9b$2@sea.gmane.org> <46D1AA07.5090307@math.cornell.edu>
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Ken Brown wrote:
> On 8/25/2007 8:30 PM, Eric Lilja wrote:
>> Ok, it seems that /etc/profile is not read when I start cygwin bash 
>> using M-x shell and I think that may be a problem.
> 
> I can't find the earlier message(s) in this thread, so I'm not sure of 
> the context.  But you might be able to solve your problem by customizing 
> the emacs variable explicit-bash-args to include "-l" or "--login".
> 
> Ken
> 
> 

Thanks, but unfortunately it didn't help. I read and post using gmane 
(set up as a news server under thunderbird) and it took hours before my 
post showed up and it sounds like people didn't get see it even then.

Here's the original post:

Hello, I'm using a native win32 version emacs and I want M-x shell to 
invoke Cygwin's bash instead of the default shell. Everything seems to 
work except that the path does not get setup properly.

Here's the output from echo $PATH when bash is run under nt emacs:
$ echo $PATH
/usr/bin:/usr/local/bin:/usr/bin:/usr/bin:/usr/X11R6/bin:/cygdrive/c/Program/MiKTeX 
2.6/miktex/bin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/System32/Wbem:/cygdrive/c/emacs/bin

Here's the same command when started using cygwin.bat:
$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/cygdrive/c/Program/MiKTeX 
2.6/miktex/bin:/cygdrive/c/WINDOWS/system32:/cygdrive/c/WINDOWS:/cygdrive/c/WINDOWS/System32/Wbem:/cygdrive/c/emacs/bin

See the difference? Under ntemacs I get /usr/bin twice in a row instead 
of /usr/bin:/bin:

This is causing problems for me. Why is this happening and how can I 
solve it?

Here's the relevant section of my .emacs. It's basically what's on the 
emacs wiki (I added ansi-color.for-comint-mode-on and removed the 
setting of the HOME variable as that is availabe anyway on my system):
(let* ((cygwin-root "c:/cygwin")
            (cygwin-bin (concat cygwin-root "/bin")))
       ;(setenv "HOME" (concat cygwin-root "/home/eric"))
       (setenv "PATH" (concat cygwin-bin ";" (getenv "PATH")))
       (setq exec-path (cons cygwin-bin exec-path))

      (setq shell-file-name "bash")
      (setq explicit-shell-file-name "bash")
      (add-hook 'comint-mode-hook 'ansi-color-for-comint-mode-on)))


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