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From: chrisb@risky.Convergent.COM (Chris Bertin)
Newsgroups: comp.unix.shell
Subject: ksh's cd tries to do too much
Message-ID: <3604@risky.Convergent.COM>
Date: 21 Mar 91 18:13:12 GMT
Organization: Convergent Technologies, San Jose, CA
Lines: 34

Ksh does some pre-parsing on the argument to 'cd'. It removes from the
argument all the '..' and the name before the '..' (for optimization, I
guess):

	cd _not_a_directory/../_junk_/..

has no effect, even though 2 directories in the argument don't exist. The
problem is that if you type:

	cd _valid_CDPATH_directory/..

it has no effect either and I think that's a bug.

	$ echo $CDPATH
	:/a/b/c
	$ cd /a/b/c/d
	$ pwd
	/a/b/c/d
	$ cd /
	$ ls d
	d: No such file or directory
	$ cd d/..
	$ pwd
	/

This works with /bin/sh (the shell would put me in /a/b/c) and I didn't find
anything in the man page that would mention this as a 'feature'.

Chris

-- 
Chris Bertin		|   chrisb@risky.Convergent.COM
Unisys			|		or
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