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Using cygwin bash shell with NT Emacs, path is not setup perfectly


From: Eric Lilja
Subject: Using cygwin bash shell with NT Emacs, path is not setup perfectly
Date: Sat, 25 Aug 2007 15:36:02 +0200
User-agent: Thunderbird 2.0.0.6 (Windows/20070728)

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)))

Thanks for any replies.

Posting this to both gmane.os.cygwin and gmane.emacs.help, hope that's not inappropriate. If so, I sincerly apologise.

- Eric





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