URL:
<http://savannah.gnu.org/bugs/?24949>
Summary: coreutils pwd not implementing latest POSIX
features
Project: GNU Core Utilities
Submitted by: psmith
Submitted on: Wed 26 Nov 2008 03:50:44 PM EST
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
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Details:
I've noticed that in the POSIX standard (The Open Group Base Specifications
Issue 6 IEEE Std 1003.1, 2004 Edition), the pwd utility is expected to take
two options:
SYNOPSIS
pwd [-L | -P ]
DESCRIPTION
The pwd utility shall write to standard output an absolute pathame
of the current working directory, which does not contain the
filenames dot or dot-dot.
OPTIONS
The pwd utility shall conform to the Base Definitions volume of
IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines.
The following options shall be supported by the implementation:
-L
If the PWD environment variable contains an absolute pathname of
the current directory that does not contain the filenames dot or
dot-dot, pwd shall write this pathname to standard output.
Otherwise, the -L option shall behave as the -P option.
-P
The absolute pathname written shall not contain filenames that,
in the context of the pathname, refer to files of type symbolic
link.
If both -L and -P are specified, the last one shall apply. If
neither -L nor -P is specified, the pwd utility shall behave as if
-L had been specified.
It doesn't appear that the coreutils implementation of pwd supports this.
I realize that most shells including bash have a pwd builtin which is
typically used when the user runs "pwd". However, pwd is not required to be a
shell builtin by POSIX, and so a strictly conforming sh implementation is not
required to provide it. It seems to me that coreutils "pwd" should conform.
What do you all think? I can provide a patch if it would be something you're
interested in.
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