RE: CDPATH bug

[Valkanas Nikos]

Dear Pierre,

I am afraid you didn't understand my problem. I think it is a bug. I am
not trying to use CDPATH or prepend any directory to my destination. I
am simply trying to go down a subdirectory and it won't go, despite the
subdirectory being valid:

DrWho:~-> ls
Desktop  bin  opera6.html  work
DrWho:~-> sh
DrWho:~-> cd Desktop
sh: cd: Desktop: No such file or directory
DrWho:~-> cd ./Desktop
DrWho:~/Desktop-> exit
exit
DrWho:~->

The problem with that is that I use CDPATH and it is a valid VARIABLE in
bash. However, whenever I try to compile anything, make will use -sh and
all
Cds will fail unless they are declared fully.

I am not expecting CDPATH to work with -sh. I am simply saying that "cd
Desktop" should work with "any shell* - including sh (or bash's
emulation of sh). According to me correct sh behavior would be in this
case to ignore any inherited CDPATHs but keep cd functionality intact. 

Regards,

Nikos Valkanas 
Billing Services 
Technology & Operations 

Tel:     +30 213 000 4087       
hellas online 
Adrianiou 2, 11525 Athens, www.hol.gr 

  

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-----Original Message-----
From: Eric Blake [mailto:ebb9@byu.net] 
Sent: Monday, October 01, 2007 3:23 PM
To: Pierre Gaston
Cc: Valkanas Nikos; bug-bash@gnu.org
Subject: Re: CDPATH bug

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According to Pierre Gaston on 10/1/2007 6:02 AM:
> from http://www.gnu.org/software/bash/manual/bashref.html#SEC85
> 
> 19. If `CDPATH' is set, the `cd' builtin will not implicitly append
>      the current directory to it.  This means that `cd' will fail if
no
>      valid directory name can be constructed from any of the entries
in
>      `$CDPATH', even if the a directory with the same name as the name
>      given as an argument to `cd' exists in the current directory.

Which is a bug in bash, because POSIX requires cd to behave as though
CDPATH implicitly ended with a directive for `.'.

http://www.opengroup.org/onlinepubs/009695399/utilities/cd.html
(also read the amended instructions at
http://www.opengroup.org/austin/interps/uploads/40/6230/AI-037.txt)

step 5 deals with CDPATH, and states:

"repeat this step with the next pathname in CDPATH until all pathnames
have been tested."

at which point, if CDPATH did not find a solution, the implementation
MUST
move on to step 6:

"Set curpath to the string formed by the concatenation of the value of
PWD, a slash character, and the operand."

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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